Concrete Archives

Concrete in Compression (ACI 318)

July 12, 2017 TeamCivil Concrete, Concrete Design, Properties, Structural

Concrete in Compression It is generally accepted that the behavior of a reinforced concrete member under load depends on the stress–strain relationship of the materials, as well as the type of stress to which it is

Concrete in Tension: Tensile Strength of Concrete

July 11, 2017 TeamCivil Concrete, Concrete Design, Properties, Structural

Concrete in Tension: Tensile Strength of Concrete The tensile and compressive strengths of concrete are not proportional, and an increase in compressive strength is accompanied by an appreciably smaller percentage increase in tensile strength. According

Compacting Factor Test

July 8, 2017 TeamCivil Concrete, Tests

There is no generally accepted method of directly measuring the amount of work necessary to achieve full compaction, which is a definition of workability. Probably the best test yet available uses the inverse approach: the

Flow Table Test

July 7, 2017 TeamCivil Concrete, Tests

Flow Table Test This test was covered by BS 1881 : 105 : 1984. The test is appropriate for concrete of high and very high workability, including flowing concrete which would exhibit a collapse slump.

Cement Manufacturing Process

July 6, 2017 TeamCivil Concrete, Materials

Cement Manufacturing Process History of Cement: Cement is a material which is highly compatible to the earth’s eco-system and most adaptable to sustainable development. Cement is a fine powder which sets after a few hours

Chloride Ingress into Concrete

July 6, 2017 TeamCivil Concrete, Durability

For concrete structures in chloride-containing environments, the ingress of chlorides can take place in different ways. Through uncracked concrete, the ingress mainly takes place by capillary absorption and diffusion. When a relatively dry concrete is

Gap-graded Aggregate

July 5, 2017 TeamCivil Concrete, Materials

ِِِِِAggregate particles of a given size pack so as to form voids that can be penetrated only if the next smaller size of particles is sufficiently small, that is, there is no particle interference. This

Concrete Additives

July 5, 2017 TeamCivil Concrete, Materials

Concrete Additives Concrete additives are fine materials which are generally added to concrete in significant proportions (around 5–20 %). They are used to improve or obtain specific fresh and/or hardened concrete properties. European Standards lists