Category: Concrete Suppliers

Know More About Coloured Concrete

A primary reason why people prefer using coloured concrete for decorative purposes is that it makes every installation unique. You can achieve a design, shape, texture and pattern of your choice. If you want to create a dramatic design statement, you can blend coloured concrete boldly with nature. Gone are the days when people chose cement in its natural grey state. Nowadays, they prefer using colour to enhance the visual appeal of natural concrete. Some concrete suppliers even let their customers choose from an exclusive palette of shades. You can also achieve decorative effects. The transformation will not only look fantastic but is also worth the investment.

4 Common Methods Of Colouring Concrete

Integral Colour
Concrete Stains
Concrete Dyes
Dry-Shake Colour Hardener

How To Integrate Colour On Concrete Structures?

It is very easy to integrate colour on both new and existing concrete. The colouring method is dependent on the type of project you have undertaken and the conditions to which the structure will be exposed. There might also be some limitations as far as the intensity and availability of colour is concerned. If you want to make a spectacular concrete structure, choose a rich and permanent colour.

Why Do People Prefer Coloured Concrete?

There has been a recent increase in the demand for colour concrete as you can choose from numerous colours and achieve the perfect look. A simple patio made using concrete in Orpington can become spectacular if you choose coloured concrete. While some people prefer concrete in earth tones.

Concrete colouring is one of the design options which is both affordable and compatible with existing and new concrete. Though you can stimulate the look of pavers, tiles, bricks and flagstones using coloured concrete, make sure you choose the right technique and product.

Break Up Large Areas With Coloured Concrete

If you think that large concrete areas look dull, you can break up the look using coloured concrete. You can even pair it with decorative techniques like brooming, stamping, sandblasting and saw cutting. The objective is to achieve a more personalised look. You can also integrate marble, granite and tiles when installing concrete structures.

It’s time to use coloured concrete and you will be definitely pleased with the results.

Know The Factors Which Impact Your Concrete Mix Design

One of the primary reasons why the demand for reputed concrete suppliers is always quite high is because concrete is one of the most preferred man-made construction materials. It offers the perfect blend of affordability and durability. Just make sure that the material is prepared by mixing cement, aggregates and water in the right quantity. Once the mixture is poured in forms, they cure and become hard like a rock. The workability, strength and durability of concrete are largely dependent on how the mixture is prepared and the method of compaction. But before you start looking for a concrete supplier, know the common concrete mix designs and the factors which impact the design mix of concrete.

2 Types Of Concrete Mix Design

Nominal Mix Concrete

It is a rough method of concrete mix design which works on the principle of ratio or volume. Cement, sand and aggregates are measured before mixing instead of mixing them randomly. A unique feature of nominal mix concrete design is that they don’t require any lab testing. They are used in various parts of the world for ordinary concrete construction where the concrete grade requirement is less than M15. The M20 design mix is used for higher grades. This concrete mix design works on the principle of volumetric batching.

Design Mix Concrete

Design mix concrete is more popular than nominal mix concrete as it works on the principles of mix design. Builders choose this variety when they need concrete of desired quality for their construction project. They are even more affordable than the one stated above. Reputed concrete suppliers like Cobra Concrete Ltd. always conduct laboratory testing of the constituents before mixing them.

3 Factors Which Impact The Design Mix Of Concrete

Workability Of Concrete

If you are looking for proper placement and compaction of concrete, a few factors you should consider are the spacing and quality of reinforcement, shape and size of the section you want to concrete and how you are transporting and placing the concrete. Quality concrete offers satisfactory placement and compaction of concrete and minimum possible workability. Insufficient workability will have a negative impact on the durability, strength and surface finish of a concrete structure.

Durability Of Concrete

You can stay assured that the concrete you are using is durable if it is resistance to deterioration even in an aggressive environment. Concrete suppliers in Surrey achieve the desired durability by minimising the cement content and grade of concrete and maximising the water cement ratio. Sometimes, chemical and mineral admixtures are also added to the concrete mix to enhance their durability.

Grading Of Aggregates

If you are using both coarse and fine aggregates when preparing the concrete mix, ensure proper grading of combined aggregates. The proportion in which they are mixed will impact the material’s strength and workability. Your concrete mix will be leaner if the grading is coarser.

Since you now know the common concrete mix designs and the factors which impact its design, it’s time you start looking for a reputed concrete supplier.

Concreting Tips For Construction Workers During Summer

There are a few people who think using concrete during summer is as easy as using it during the rest of the year. High summer temperatures, low humidity, direct sunlight, high concrete temperatures and even modest wind velocity can cause concrete surface cracking (plastic shrinkage cracks).

Concrete preparation, placement and curing become a problem when the weather becomes too hot. Cement starts hydrating rapidly when the temperature increases, water evaporates quickly and construction workers often get confused about how much water they should mix to prepare concrete. The objective is to prevent cracks from developing in the concrete structure later. If you want to reap all the benefits offered by high-quality concrete in Sidcup, take all the precautions necessary during hot weather concreting.

3 Effects Of Hot Weather Concreting

To maintain the workability of concrete, you have to mix more water when preparing it. As a result, the strength of the material reduces drastically.
Plastic shrinkage cracks might develop in the structure before or after the material has become hard. It generally occurs due to rapid evaporation of water when the temperature becomes too hot. Cracks might also develop in the structure due to increased drying shrinkage.
Water has evaporated more rapidly than they should during the curing period. The easiest way to prevent the issue is by ensuring that the temperature remains uniform throughout the curing process.

7 Tips To Minimise The Impact Of Hot Weather Concreting

Avoid pouring or using concrete between 11 am to 4 pm as the temperature is at its highest between these times.
Create a shed in your construction site to store sand, cement and stone aggregates.
Keep stone aggregates cold by sprinkling water over them at fixed intervals.
Sprinkle cold water on reinforcements, forms and sub-grade just before placing the concrete.
Try to finish the concrete placement process quickly if you want to minimise the impact of hot weather concreting.
Using concrete after a long time you have prepared them will decrease the material’s workability. You have to mix more water to deal with the situation.
Start moist curing concrete once it attains the required degree of hardening.

These being said, it’s time you follow the tips stated above and choose a reputed concrete supplier if you want to minimise the impact of hot weather concreting.

concrete company Concrete Contractors Concrete Suppliers concreting in hot weather Concreting Tips construction material

Know How Ready-Mix Concrete Is Prepared By Suppliers In Sidcup

Concrete is one of the most widely used construction materials in the world. It is economical, durable and can be cast into a shape you want. In industrialised and developing countries, they are used to build both residential and commercial buildings. Cement and aggregates are two common materials used to make concrete. You have to mix them with water in the right proportion.

Not only is concrete entirely inert but also provides exceptional durability without any special maintenance. Though concrete suppliers in Sidcup offer a wide variety of concrete to fulfil your construction needs, the demand for ready-mix concrete is gradually increasing. Few easy steps followed to prepare this concrete variety have been stated below.

Steps Followed By Concrete Suppliers In Sidcup When Preparing Ready-Mix Concrete

1) A semi-trailer is used to deliver and unload aggregates into the receiving hopper. The hopper is covered with a cladding which not only helps in limiting noise but also reduces the amount of dust emitted during the unloading process. The objective is to keep these disturbances away from the environment.

2) A bucket elevator or conveyor belt is used to transport the aggregates.

3) The capacity of the compartmented silo or hoppers in which the aggregates are stored is dependent on the production capacity of the plant.

4) A belt scale or weighbridge is used to weigh the aggregates before transferring it to the mixer.

5) A tanker truck delivers the cement which is then stored in waterproof silos. The filters in the silo prevents the dust from getting released into the air. You can store a wide variety of cement in them. Concrete suppliers use a cement auger to feed the cement into the cement skip scale where it is weighed.

6) The cement mixer is an integral part of every plant. The previously weighed aggregates, cement and water are fed into the cement mix where they are mixed for around one minute so you can get a homogeneous concrete mixture.

7) There is a door at the lower part of the mixer which opens once the mixture is prepared. It transfers concrete from the concrete mixer to the mixer truck.

8) If you want to make changes in the properties of the concrete, you can add admixtures during the production process.

9) There is a controller in the control room which helps the central control technician carry out the production with ease. The automated process of preparing concrete in Sidcup guarantees precision.

10) The mixer trucks responsible for delivering fresh concrete to construction sites have a capacity of 4.6 to 8m³. If you want to make the most of ready-mix concrete, use it within 2 hours after it is manufactured. A pump truck is used to deliver the concrete and implement it on site.

11) You can use a recycler to separate aggregates from the loaded water which can later be used to produce various types of concrete. You will be surprised to know that every material left behind as residue during the production process is recyclable.

These being said, you now know how suppliers prepare ready-mix concrete in Sidcup.

concrete company Concrete Contractors ready mix concrete

4 Unique Facts About Concrete You Will Love Reading

Concrete is produced by mixing various ingredients like water, cement, aggregates and additives. It creates a hard and protective surface when it chemically reacts with the gases present in the air. The various benefits offered by it is one of the primary reasons why people has been using this construction material for hundreds of years. Earlier, they were used to make underground water cisterns in deserts. Nowadays, concrete is one of the most popular man-made building materials. Whether you are planning to build a long highway or just a kitchen counter-top, it is the best material as they have high strength and durability.

Prefer Using Concrete? Few Unique Facts About The Material

It Is The Only Building Material Resistant To Fire And Water

Concrete is a fire-proof material which means that it won’t burn even if you set it on fire. Since it doesn’t burn, it doesn’t release toxic fumes in the air as well which makes it an eco-friendly material. The thermal conductivity of concrete is very slow so it can transfer heat with ease. Builders prefer using concrete when constructing buildings so that the structure can survive a fire. The material is also water-resistant. You can make it waterproof as well by mixing membranes and special concrete mixes.

It Is The Most Preferred Material For Road Construction

The majority of the motorways in the world are made using concrete. Though you have to spend more money to make a motorway using concrete instead of asphalt, the former last longer so you can enjoy it for years to come with minimal maintenance. Concrete is also a more environmentally-friendly choice. You can customise concrete mixes according to your unique construction needs. You can also save time by using ready mix concrete in Croydon.

Home Buyers Prefer Concrete Sinks, Floors And Counter-tops

One of the primary reasons why home buyers prefer properties with concrete outdoor furniture and garden decor is because the material can withstand water. When concrete is used for interior designing, the appeal of the inside of your home enhances drastically. It is durable and versatile which makes it the ideal material when building custom fireplaces, sinks and counter-tops. Though there are various flooring materials you can choose from, concrete floors are an economical option.

Reinforced Concrete Works The Best For Underwater Structures

It is easy to develop different concrete mixes for specific uses as cement is an aggregate. For example, Pozzolanic is the best material you can use for constructing underwater structures like piers, tunnels, dams and sewer works. This concrete variety is highly water-resistant and more versatile than wood and steel. Even reinforced concrete has a higher compressive strength compared to other building materials.

The unique facts about concrete stated above will make it easier for you to understand why the building material is so important.

concrete company Concrete Contractors construction material ready mix concrete

5 Significant Advantages of Buying Ready-Mix Concrete

People who are involved in some kind of construction projects may find it easy to buy the sacks of concrete and mix it up on their own. Especially if this is a small job of construction, then this is the best solution in most of the cases. However, the use of ready-mix concrete is a better idea to obtain a more efficient service. If you are confused about choosing the right type of concrete in Surrey, you should be aware of the advantages of ready-mix accredited concrete.

Key Benefits of Ready-Mix Concrete Is Revealed

High Quality is Guaranteed

Ready-mix concrete is widely recognized in the construction industry for its high quality. It meets specific standard requirements for safety and durability when you use it in a construction site. Whether you use it for big construction or something minimal; the result will be robust and durable without any doubt.

Consistency Is Superior

Ready-mix concrete is known for offering the ultimate consistency that you always wish to achieve for your construction project. Without proper consistency, it would be difficult to gain the best result out of any concrete work. Hence, you need to use the product that can offer you the same. Mixing various batches of concrete to obtain that desired level of consistency is a time-consuming and daunting task. Besides, the result is not always satisfactory. The ready-mix concrete will save you in this situation.

Achieve High Speed of Construction

Ready-mix concrete always offers you high-speed of construction. Since you do not need to mix each batch of concrete separately, you can save a significant amount of time. Hence, the entire construction project can be finished within the shortest time possible.

Environment-Friendly Product

The mixing method is efficient, and it reduces the dust-pollution level in the air to a great extent. Cement and waste production can be kept under control in your construction site when you choose ready-mix concrete over the other types. Besides, it is easy to transport from one place to the other without increasing the pollution level. This eco-friendly nature of ready-mix concrete makes it one of the most favourite of the modern construction companies, civil engineers and the building experts.

Ready-Mix Concrete Meets the Regulations

In the UK, the regulations of the National House Building Council state that all concrete used in building new homes must meet the standard set by BSI. It is necessary to satisfy the building regulations without any flaw. The aim is to ensure the safety of the buildings and keep them long-lasting. All the government building must use the accredited concrete in Surrey and no other variations.

With such a long list of advantages, it becomes evident that clients belong to the construction industry love to buy ready-mix concrete for their upcoming and ongoing projects. This is a wise investment for them.

Cobra Concrete Ltd. provides high-quality concrete to companies, as well as individual users. We are available in and around London including part of Surrey. Our concrete is not only best in quality, but we can promise you competitive pricing and highly supporting customer service. Please get in touch with us for more information.

ready mix concrete ready-mix concrete

Know The Differences Between Site-Mixed And Ready Mix Concrete

Concrete is one of the most commonly used construction materials as it is durable and affordable. The production cost of cement used to make concrete is also quite low. The material hardens at room temperature and gains its strength. Fresh concrete is flowable and can be cast into any shape. You can adjust the mix and cast them into complex shapes at construction sites.

Since concrete has so many unique qualities, you can use it for a wide variety of projects without worrying about its cost. Just make sure you choose the right concrete variety which suits your construction project needs and budget. Two concrete varieties which are widely used are site-mixed concrete and ready-mix concrete. You can choose the right material for your project if you know the differences between them.

4 Differences Between Site-Mixed And Ready Mix Concrete

Preparation

The primary difference between volumetric and ready-mix concrete is the method through which the ingredients are mixed and the concrete prepared. The former is prepared at the client’s construction site by the labourers. If you want to avoid quality issues, make sure the ingredients are mixed in proper proportions. Ready mix concrete, on the other hand, is manufactured at a plant and delivered in a ready-to-use state to the construction site. Concrete suppliers sell them in volume and measure them in cubic meters.

Time Taken

Since the preparation process differs, the time taken to prepare volumetric and ready-mix concrete is also different. If you have undertaken a large size project, its speed is a vital thing to consider. Since you can load and off-load ready mix concrete easily, you can save a lot of time. Preparing site-mixed concrete is very time-consuming and there are high chances for your project to get delayed.

Equipment

The equipment used to prepare both the concrete varieties also differ. One of the equipment you will definitely need if you want to prepare volumetric concrete at the construction site is batch mixers. Whether you rent the equipment or buy one, you have to spend a few pounds. The best alternative is to approach a reputed supplier of ready mix concrete in Croydon. Since this concrete variety is delivered in a ready-to-use state to the construction site, you don’t need any equipment to prepare them.

Convenience

If convenience is your priority when working on a construction project, choose ready-mix concrete instead of site-mixed concrete. You can handle it with convenience, irrespective of the size of your project. You can also deliver it to multiple locations with ease. Volumetric concrete, on the other hand, should be mixed near the point of use to avoid any type of contamination. You also need controlled storage spaces when storing them.

Since you now know the basic differences between site-mixed and ready mix concrete, it’s time you choose one and approach a reputed concrete supplier.

ready-mix concrete

4 Reasons behind the Failure of Concrete and How to Avoid Such a Situation

Concrete is one of the most sought after human-made building material. It is a staple element for construction projects for its excessive strength and heat-proof elements. These are the factors that have helped it to gain immense popularity. Concrete, in general, is very durable, but still, it is not free from a few specific weaknesses. Unless some measures are taken, then there are chances that the concrete might fail to hold on to its sustainability. Here is an attempt to explore the four most important reasons why concrete ought to fail and the ways to prevent such an occurrence as you are availing concrete in Orpington.

Four ways concrete might fail and how to eliminate the chances

Inappropriate raw materials resulting in low-quality concrete

There are many instances when the raw materials can be solely blamed for the failure of the concrete. If the selection of raw materials will be wrong, then the quality of the concrete will hamper to a great extent. The ratio of the raw materials should be determined carefully as the quality of mixed concrete mainly depends on it. If the ratio won’t be perfect, then the concrete will tend to break at a faster rate and won’t have the required strength. To avoid such a consequence, be sure about the type and proportion of the raw materials. It will help if you put in adequate research before deciding on getting concrete in Orpington.

Poor finishing during application leading to trapped air in the concrete

It is a common problem encountered while applying the concrete. Due to poor finishing, some amount of water and air bubbles tend to get trapped within the concrete particles. This can cause exponential damage to the concrete structure by reducing its strength and making it weaker. Adequate care must be used to keep the air content around 3% and to ensure that the concrete is not suffering a premature finishing. It is also essential to properly maintain the manufacturing conditions to prevent the air from getting trapped within.

Cracks in concrete due to the reaction between alkali and silica

There are cases when the aggregates contain silica and alkali. As they are exposed to humid condition, a sort of gel formation occurs, and then the concrete tends to crack. These result in crumbling of the concrete structure. To prevent this, one should be careful about not letting the silica content in the aggregate gets exposed to humid conditions.

Choosing the wrong type of concrete overloading concrete exceeding the point of failure

Concrete comes in different varieties, and each of them bears a different kind of strength. Based on that the type is chosen. For instance, if the structure needs to support considerable weight, then reinforced concrete needs to be used. Hence, if the wrong variety is determined by mistake or to cut the cost, then there are chances that structure will fail when heavy loads are exerted. To avoid such an instance, choose the right type and do not indulge in overloading the structure beyond the specified limit. The best option to have the highest quality concrete would be choosing a reputed concrete supplier. Cobra Concrete is a trusted name in the specific domain. Count on them to have your structure made of concrete in Orpington strong and sturdy always.

concrete company Concrete Contractors Concrete Services Concrete Suppliers

Planning To Construct Concrete Buildings? Know The 7 Steps Involved

One of the construction materials which people have been using for years is concrete. Every concrete building is durable and requires minimal maintenance. Recently, construction workers have started using innovative concrete technologies which have made laying and pouring of concrete easy. If you are willing to use the conventional method of concrete construction, get in touch with an experienced supplier of concrete. A majority of them have years of industry presence and know the various ways you have to follow when preparing the construction site, build the framework, place reinforcement, mix, pour, finish and cure concrete.

Follow The Steps Below And Construct Concrete Buildings In Bexley

• Estimate The Materials You Need

It is necessary to mix the concrete ingredients in correct proportion if you want the material to be of high quality. The batching process will help in carrying out the right measurement of the concrete ingredients. Approach a renowned supplier of concrete in Bexley as the proportion and quantity of cement, water and aggregates are important.

• Prepare The Site

A very vital aspect of pouring concrete is site preparation. It is the responsibility of the construction workers to ensure that concrete is poured on a compacted and well-drained soil. The subsurface should be properly prepared and it will help in minimising potential cracks.

• Build The Formwork

The importance of formwork in construction can never be neglected as they are responsible for supporting structures. Moulds are also created inside which concrete is poured. Few materials generally used to build the framework are steel, wood and aluminium.

• Place Reinforcement

You can protect a concrete structure from displacement by placing the reinforcement accurately and supporting it properly before placing the concrete. Construction workers place reinforcement after considering the number of bars, bends, positions and bar lengths. This step will assure that the steel is bonding well with the concrete.

• Mix The Concrete

How you mix the concrete ingredients will impact the quality of the concrete, both in its hardened and fresh state. It is necessary to mix the material well. It should be informed in colour. You can achieve proper consistency if the material is designed the right way.

• Pour The Concrete

It is necessary to pour the concrete within the initial set time if you don’t want to deteriorate the quality of the concrete structure. Two common methods through which concrete is poured are pumping and manual transportation. Sometimes, vibrators are used to compact the poured concrete.

• Finish The Concrete

How you finish a concrete structure is very important as it renders the building a smooth finish. Hire experienced contractors as they know the right method screeds and trowels that should be used to level the surface after the concrete is poured.

These being said, it’s time to follow the steps below above and constructing concrete buildings will become easier.

Concrete Buildings concrete company Concrete Construction Concrete Contractors Concrete Suppliers

Using Concrete In Cold Weather? Few Things You Should Avoid

Concrete is subjected to different curing conditions as the temperature fluctuates which makes the material gain sporadic strength. Contractors willing to protect fresh concrete have to take a bit of preparation before the climate changes. They should know the right equipment to be used at the job site like blankets and tarps. These help in preventing unsafe concrete development and avoid unnecessary delays.

Working with concrete becomes a complicated task in Croydon as the outdoor temperature goes below 40 degrees F and the air temperature goes below 50 degrees F. Such being the situation, contractors should follow a few do’s and don’ts when using concrete. Negligence to do so can lead to structural problems and delay your project.

5 Mistakes To Avoid When Using Concrete In Cold Weather

Pouring The Material On Frozen Ground

Make sure you don’t pour concrete on to frozen ground even if you are in a hurry to complete your construction project. The effectiveness of the concrete curing conditions is largely dependent on how the concrete is poured and slabs are placed. It will take less time for the concrete near the surface to cure than the one close to the ground. The chances of the concrete cracking and structure disaster increases as the material can’t develop strength properly.

Sealing The Material When The Weather Is Cold

The primary objective of using concrete sealers is to make the material more resistant to external element and weather exposure. Construction workers using concrete in cold weather should use a sealer which has been specially designed for extreme weather conditions. Even if you are in a hurry, don’t seal concrete when the temperature is below 10^oC.

Misjudging Daylight

The amount of daylight experienced by the people in Croydon becomes low during the colder months. Instead of running behind schedules, try to use your time wisely. If possible, pour and cure concrete during daytime as the temperature is warmer when there is an abundance of light.

Allowing The Material To Freeze

Concrete in Croydon can cure properly only if it is kept in warm temperatures (not exceeding 10^oC). If the temperature is below -4^oC, fresh concrete can freeze really quick. It is the responsibility of the contractor to keep fresh concrete warm until its compressive strength measurement becomes appropriate. A suitable concrete temperature and maturity meter like SmartRock can be used to do this task.

Using Cold Tools And Equipment

The temperature of the tools and equipment you are using to pour and cure concrete should also be as warm as the raw material. The composition and temperature can change if the tools you are using are too cold. This will have a negative impact on the strength of the concrete slab. Avoid the mistakes stated above when using concrete in cold weather and the concrete structure will be durable and beautiful.

Cobra Concrete concrete company Concrete In Cold Weather Concrete Suppliers

Cookie	Duration	Description
cookielawinfo-checkbox-analytics	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional	11 months	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy	11 months	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.