Compressive strength test on bricks are carried out to determine the load carrying capacity of bricks under compression with the help of compression testing machine. Bricks are generally used for construction of load bearing masonry walls, columns and footings. These ...
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Permeability Test on Concrete Structures
When concrete is permeable it can cause corrosion in reinforcement in presence of oxygen, moisture, CO2, SO3- and Cl– etc. This formation of rust due to corrosion becomes nearly 6 times the volume of steel oxide layer, due to which ...
MEASURING LOSS OF PRESTRESS IN PRESTRESSED CONCRETE
Instruments for measuring loss of prestress in prestressed concrete: The initial pre-stressing force applied to the concrete element reduces due to elastic shortening of the concrete, anchorage losses, frictional losses etc. The pre-stressing force further reduces with the passage of ...
CHEMICAL AND PHYSICAL REQUIREMENT OF CEMENT
Cement is defined as the product manufactured by burning and crushing to powder an intimate and well-proportioned mixture of calcareous and argillaceous materials. The cement, which is generally used for preparing concrete, is the Ordinary Portland Cement. But for special ...
DYNAMIC PROBE TEST FOR SOIL
Dynamic probe test is done to determine the penetration resistance of soil. Apparatus required for dynamic probe test of soil are: (a) Dynamic Probe: The anvils shall be rigidly fixed to the guide rod; the lower anvil shall also be ...
Elongation Index Test on Coarse Aggreagtes
Elongation index of an aggregate is the percentage by weight of particles whose greatest dimension (length) is greater than one and four-fifth times (1.8 times or 9/5 times) their mean dimension. It is measured on particles passing through mesh size ...
BEHAVIOUR OF CONCRETE UNDER TENSION
Concrete is not normally designed to resist direct tension. However, tensile stresses develops in concrete members as a result of flexure, shrinkage and temperature changes. Principal tensile stresses may also result from multi-axial states of stress. Normally cracking in concrete ...
TESTS ON WATER FOR CONCRETE
TESTS ON WATER FOR CONCRETE A simple way of determining the suitability of water for mixing is to compare the setting time of cement and the strength of mortar cubes using the water in question with the corresponding results obtained ...