What is ready-mix concrete?

Concrete is a mixture of 3 things: water, Aggregate, and Cement powder

We can use a fine aggregate such as sand or a coarse aggregate such as gravel. Through the chemical reaction of hydration, this paste hardens and gains strength to form concrete.

How is it used?

After it’s been mixed and delivered to the site, ready-mix concrete must be used within two hours to prevent the hardening of the material. Concrete is the most used construction material on the planet. It can be formed into various shapes when freshly mixed and hardened into a strong substance.

How do we evaluate concrete?
Concrete evaluation is based on 3 important steps:

Slump Test

is conducted in-field on fresh Ready-mix.

Compressive strength test: 

  A common performance measure used by engineers

 

Drying shrinkage test:

​Measuring the change in the size of the specimen.

In ALMISNED READYMIX we have a well-equipped Laboratory with an experienced materials engineer, supported by experienced Technicians to control the quality of concrete. We follow the ASTM, BS, AND QCS standards to monitor the quality t of ingredients used in concrete. 

Proportions of materials: ​

To ensure you have strong and durable concrete, you need to ensure that you have the proportions of each of the key elements above in careful proportion. If the mixture is too watery it will produce smoother concrete, however, this could cause cracking later down the line. If the mixture has too little water, then this will create a rough surface and porous concrete.

Usually, a concrete mix would be split into the following proportions:

60-75%

Aggregate

15-20%

Water

  10-15%

Cement