Suryakanta 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
Last updated on 22 June 2026 Overview Standard consistency of a cement paste is defined as that consistency which will permit a vicat plunger having 10 mm dia and 50 mm length to penetrate to a depth of 33-35 mm from top of the mould. Apparatus Measuring Instruments NAME CAPACITY / RANGE / SIZE ACCURACY / … Read more
Last updated on 22 June 2026 Overview Fineness of cement is measured by sieving it on standard sieve. The proportion of cement of which the grain sizes are larger than the specified mesh size is thus determined. Apparatus Measuring Instruments NAME CAPACITY / RANGE / SIZE ACCURACY / LEAST COUNT Sieve 90 micron mesh — Balance … Read more
Overview Mobility is a basic human need. From the times immemorial, everyone travels either for food or leisure. A closely associated need is the transport of raw materials to a manufacturing unit or nished goods for consumption. Transportation ful lls these basic needs of humanity. Transportation plays a major role in the development of the human civilization. For … Read more
Overview While designing a structure, engineer assumes certain value of strength for each of material being used therein. When the structure is being constructed, it is the bounden duty of the field engineers to get the same validated by regular testing of material.The quality of materials used in any infrastructure does play a vital role with regard to its … Read more