The digital compression testing machine is used to determine the compressive strength of cube and cylinder (i.e. hardened concrete).
Sieve analysis of fine aggregates is one of the most important tests performed on site.The whole procedure of sieve analysis is to determine the particle size distribution of the fine aggregates and determine whether it is suitable to use in concrete mixing.
The digital compression testing machine is used to determine the compressive strength of cube and cylinder (i.e. hardened concrete).
The Strength value of each cube should be noted and compared with the targeted strength value. The reason for conducting the concrete test on 7 th day and attain the targeted 28 th day strength.
Vicat apparatus is a penetration device used in testing of hydraulic cements and similar materials to determine their normal or standard consistency. It is also used to determine the initial setting time and final setting time of hydraulic cements and similar materials.
Impact value test-The aggregate impact value is a determining measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load.
The concrete slump test measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows. It can also be used as an indicator of an improperly mixed batch. The test is popular due to the simplicity of apparatus used and simple procedure. The slump test is used to ensure uniformity for different loads of concrete under field conditions.
Silt Analysis is very important for testing the presence of silt in the sand. Fine material less than 150 microns is found in sand is called silt. Excessive amount of silt reduces the strenght of concrete.The high amount of silt in the sand can be harmful to the strength and durability of the concrete.