Suryakanta Objective For determination of relative density of liquid admixture. Reference Standards IS : 9103-1999 – Concrete admixtures specification Equipment & Apparatus Constant temperature bath Hydrometer Measuring cylinder(500 ml) Procedure About 400 ml of admixture is placed in a 500 ml graduated cylinder. The hydrometer is inserted into the cylinder. When it has reached the equilibrium … Read more
Objective The ash content which gives an indication of inorganic constituents is determined by igniting the admixture at 6000C to remove any organic material. Reference Standards IS : 9103-1999 – Concrete admixtures specification Equipment & Apparatus Oven(3000C) Bottle Balance(0-10kg) Procedure About 1 g of sample is placed in a porcelain crucible. The crucible is then placed … Read more
Objective For determination of dry material content of liquid admixtures. Reference Standards IS : 9103-1999- Concrete admixtures specification Equipment & Apparatus Oven(3000c) Bottle Balance(0-10kg) Procedure 25 to 30 g of preheated, completely dry sand is placed in a wide mouth glass weighing bottle provided with ground glass stopper. The bottle with sand and stopper is … Read more
Objective The tests are required to determine the strength of concrete and therefore its suitability for the job. Reference Standards IS : 516-1959 – Methods of tests for strength of concrete. Equipment & Apparatus Compression testing machine (2000 KN) Curing tank/Accelerated curing tank Balance (0-10 Kg) Procedure Representative samples of concrete shall be taken and … Read more
Objective Normally, the strength of concrete is found out after 7 days and 28 days. For some construction activities, it may be too late and need to know the strength earlier. Reference Standards IS: 9013-1978-Method of making, curing and determining compressive strength of accelerated cured concrete test specimen. Equipment & Apparatus Accelerated curing tank Compression Testing Machine … Read more
Objective For determination of relative quantity of mixing water that will bleed from a sample of freshly mixed concrete. Reference Standard IS : 9103-1999 – Method of sampling and analysis of concrete. Equipment & Apparatus Cylindrical measure Tamping Bar Pipette Graduated Jar Procedure The container is filled with concrete up to a height of 250±3 … Read more
Objective For determination of consistency of concrete where the nominal maximum size of aggregate does not exceed 38 mm using flow table apparatus. Reference Standard IS : 1199 – 1959 – Method of sampling and analysis of concrete. Equipment & Apparatus Flow table Procedure Before commencing test, the table top and inside of the mould … Read more
Objective For determination of consistency of concrete where the nominal maximum size of aggregate does not exceed 38 mm using compacting factor test apparatus. Reference Standards IS: 1199 – 1959 – Method of sampling and analysis of concrete. Equipment & Apparatus Compacting factor apparatus. Procedure The sample of concrete to be tested is placed … Read more
Object For determination of consistency of concrete where the nominal maximum size of aggregate does not exceed 38 mm using slump test apparatus. Reference Standards IS : 1199 – 1959 – Method of sampling and analysis of concrete. Equipment & Apparatus Slump cone Tamping rod Procedure The internal surface of the mould is thoroughly cleaned … Read more
Objective For determination of bulk density of bricks Equipment & Apparatus Oven (3000C) Scale Balance (0-10kg) Procedure The brick is dried in a ventilated oven at a temperature of 1050 to 1150C till it attains substantially constant mass. The brick is then cooled to room temperature and its mass is recorded.(M) Then the dimensions of … Read more