Modulus of elasticity of concrete is the ratio of normal stress to the corresponding strain for tensile or compressive stresses below the proportional limit of concrete, ACI 318-14. The value of elastic modulus of concrete can be obtained using formulas ...
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Tension Test on Steel Rod – Procedure and Results
Tension test is performed on mild steel, tor steel and high tensile steel to determine the properties like Young’s modulus, ultimate strength, and the percentage elongation. In the tension test, a steel rod is subjected to tension load by the ...
Hot Weather Concreting – Effect of Hot Weather on Concrete
Hot weather has a significant effect on all stages of concrete production and placement procedures such as increasing rate of hydration and movement of moisture from within and surface of the concrete. It affects long term strength and durability. Hot ...
Field Density of Soil by Rubber Balloon Method
Rubber balloon test method is an in-situ test conducted to determine field density of soils especially compacted soils. Apparatus required, test procedure and calculations of rubber balloon method are explained in this article. Field Density of Soil by Rubber Balloon ...
Test for Bleeding of Concrete
The relative quantity of mixing water, which will bleed from fresh concrete mix can be determined by the test for bleeding of concrete. Test for Bleeding of Concrete Apparatus Apparatus and accesory required for bleeding test of concrete are as ...
Efflorescence on Concrete – Causes, Prevention and Removal
Efflorescence in concrete is a whitish coloured powdered deposition of salts on the concrete surface that is formed due to evaporation of water from the concrete. It is caused when water soluble salts are present in the concrete material, which ...
Lime Soil Stabilization Method and Factors Affecting it
Lime-Soil stabilization is the process of adding lime to the soil to improve its properties like density, bearing capacity etc. Various factors affecting lime-soil stabilization are soil type, lime type, lime content used, compaction, curing period and additives which are ...
Concrete Moisture and Vapor Test on Floors and Slabs
Concrete moisture and vapor tests are conducted to examine the presence and quantity of moisture in concrete floors and slabs. This is because moisture in concrete cause several problems for instance, discoloration, interrupt polymerization of products, and lead to delamination ...