Concrete Archives

Concrete Aggregates: Effects and Classification

July 16, 2017 TeamCivil Concrete, Materials

Aggregates: Effects and Classification Aggregates constitute a skeleton of concrete. Approximately three-quarters of the volume of conventional concrete is occupied by aggregate. It is inevitable that a constituent occupying such a large percentage of the

Rodded Unit Weight of Coarse Aggregates Test (ASTM C29)

July 16, 2017 TeamCivil Concrete, Tests

Rodded Unit Weight of Coarse Aggregates according to Astm C29 PURPOSE Astm C29: Determination of the unit weight of coarse aggregates in a compacted condition. This test method is applicable to aggregates not exceeding 15

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