Suryakanta Objective For determination of elongation index of coarse aggregate, where the size of the coarse aggregate are larger than 6.3 mm. Reference Standards IS: 2386 (Part I) – 1963 – Method of test for aggregates for concrete (Part I) Particle size and shape. Equipment & Apparatus Length gauge Sieves (63mm,50mm,40mm,31.5mm,25mm,20mm,16mm,12.5mm,10mm) Balance (0-10kg) Oven (3000c) Test … Read more
Objective For determination of the aggregates 10% fines value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm IS sieve Reference Standards IS : 2386 (Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment & Apparatus Steel cylinder Sieves (12.5mm,10mm) Cylindrical metal measure Tamping Rod … Read more
Objective For determination of the aggregate abrasion value of coarse aggregate. Reference Standards IS: 2386 (Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment & Apparatus Los Angeles machines Sieves (1.70mm) Cylindrical metal measure Tamping Rod Balance (0-10kg) Oven (3000c) Preparation sample Test sample is dried in oven for a … Read more
Objective For determination of the aggregate crushing value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. Reference Standard IS: 2386 (Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment & Apparatus Steel Cylinder Sieves (12.5mm,10mm) Cylindrical metal measure Tamping Rod Balance (0-10kg) … Read more
Objective For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. Reference Standards IS: 2386(Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment & Apparatus Aggregate Impact Test Machine Sieves (12.5mm,10mm) Cylindrical metal measure Tamping Rod Balance … Read more
Overview Specific gravity is defined as the ratio between the weight of a given volume of cement and weight of an equal volume of water. Apparatus Measuring Instruments NAME CAPACITY / RANGE / SIZE ACCURACY / LEAST COUNT Lechatelier flask Balance Water bath Other Apparatus Tray Environmental Conditions Temp Relative humidity Test Procedure Dry the Le-chatelier … Read more
Overview Compressive strength of cement is determined by compressive strength test on mortar cubes compacted by means of a standard vibration machine. Standard sand (IS:650) is used for the preparation of cement mortar. The specimen is in the form of cubes 70.6mm*70.6mm*70.6mm. Apparatus Measuring Instruments NAME CAPACITY / RANGE / SIZE ACCURACY / LEAST COUNT Cube … Read more
Overview In the soundness test a specimen of hardened cement paste is boiled for a fixed time so that any tendency to expand is speeded up and can be detected. Soundness means the ability to resist volume expansion. Apparatus Measuring Instruments NAME CAPACITY / RANGE / SIZE ACCURACY / LEAST COUNT Autoclave 1000C (min) 10C Length … Read more
Overview In the soundness test a specimen of hardened cement paste is boiled for a fixed time so that any tendency to expand is speeded up and can be detected. Soundness means the ability to resist volume expansion. Apparatus Measuring Instruments NAME CAPACITY / RANGE / SIZE ACCURACY / LEAST COUNT Le-chatelier apparatus Should be made … Read more
Overview Initial setting time is that time period between the time water is added to cement and time at which 1 mm square section needle fails to penetrate the cement paste, placed in the Vicat’s mould 5 mm to 7 mm from the bottom of the mould. Final setting time is that time period between … Read more