Control Joint in Concrete Control joints in concrete are provided at regular interval to from a weak plane, so that cracks are formed at the joints but not in undesired places. Control joints are provided in concrete pavements, slabs, walls, floors, ...
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Different Types of Soil – Sand, Silt, Clay and Loam
Soil can be defined in many ways. In civil engineering, soil is a naturally occurring, loose/un-cemented/weakly cemented/relatively unconsolidated mineral particles, organic or inorganic in character, lying over the bed rock which is formed by weathering of rocks. Soil is formed ...
Fineness Modulus of Cement by Dry Sieving
The Fineness modulus of cement is an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each of a specified series of sieves, and dividing the sum by 100. The proportion of cement of which ...
Shear Strength of Soil by Vane Shear Test
Vane shear test is used to determine the undrained shear strength of soils especially soft clays. This test can be done in laboratory or in the field directly on the ground. Vane shear test gives accurate results for soils of ...
What is Rebar? Types and Grades of Steel Reinforcement
What is Rebar? Steel reinforcement bars or rebars are used to improve the tensile strength of the concrete, since concrete is very weak in tension, but is strong in compression. Steel is only used as rebar because elongation of steel ...
Determine Water Content of Soil by Oven Dry and Pycnometer Methods
What is Water Content of Soil? The water content of soil is is the ratio of mass of water to mass of soil which is expressed in percentage. Oven Dry Method and Pycnometer Method are commonly used to determine the ...
Expansive Cement – Manufacture, Properties, Types and Uses
Expansive cement is special type of cement when mixed with water, which forms a paste that tends to increase in volume to a significantly greater degree than Portland cement paste after setting. The expansion of the cement mortar or concrete is ...
Hydrophobic Cement – Manufacture, Properties and Uses
As the name of the cement denotes, hydro means water and phobic means against. Hydrophobic cement is obtained by grinding portland cement clinker with a film-forming substance such as oleic acid in order to reduce the rate of deterioration when the cement is ...