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DESIGNED CONCRETE SPECIFICATIONS

Designed concrete are those for which the producer is responsible for selecting the mix proportions to meet the required performance as communicated by the specifier. Therefore it is essential that the specifier, in compiling the specification, takes account of: ...

Types of Concrete Mix Ratio Design and their Strengths

Concrete mix ratios are the proportions of concrete components such as cement, sand, aggregates and water. These mix ratios are decided based on type of construction and mix designs.However, building codes provides nominal and standard concrete mix ratios for various ...

What is the Right Water-Cement Ratio for Mix Design?

A right water-cement ratio for concrete design will influence the compressive strength, permeability and the overall durability of the concrete structure. The idea of w/c ratio is that more the value, greater is the water content in the concrete and ...

Grading of Aggregates and Grading Limits

Grading of aggregates are determination of particle size distribution of aggregates. Grading of aggregates is an important factor for concrete mix design. These affect the concrete strength as well as durability.Proper grading is important for concrete construction. Following tables provides ...

Concrete Workability for Different Placing Conditions

Workability Requirements for Different Concrete Placement: Requirement of concrete workability varies with different types of construction. Workability of concrete is decided by design engineers based on concrete strength requirements, durability requirements and ease of construction at site.For a construction with use ...