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Particle-Size Analysis of Soils ASTM D422

Particle-Size Analysis of Soils  ASTM D422 GRAIN SIZE ANALYSIS SIEVE & HYDROMETER ANALYSIS Purpose : This test is performed to determine the percentage of different grain sizes contained within a soil. The mechanical or sieve analysis is performed to determine the distribution of the coarser, larger-sized particles, and the hydrometer method is used to determine the distribution of the finer particles. Standard Reference : ASTM D 422 - Standard Test Method for Particle-Size Analysis of Soils Significance : The distribution of different grain sizes affects the engineering properties of soil. Grain size analysis provides the grain size distribution, and it is required in classifying the soil. Equipment : Balance, Set of sieves, Cleaning brush, Sieve shaker, Mixer (blender), 152H Hydrometer, Sedimentation cylinder, Control cylinder, Thermometer, Beaker, Timing device. Test Procedure: Sieve Analysis: (1) Write down the weight of each sieve as
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Compressive Strength of Concrete Cylinder [Urdu/Hindi] Part-3 ASTM C39/AASHTO T22

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Compressive Strength of Concrete Cylinder [Urdu/Hindi] Part-3 ASTM C39/AASHTO T22 *Scope* This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a density in excess of 800 kg/m3 [50 lb/ft3]. The program requires a working knowledge of the following ASTM test methods and practices. Referenced Documents. • C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field • C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete • C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory • C617 Practice for Capping Cylindrical Concrete Specimens • C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials • C873 Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds • C1077 Prac
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Slump Test of Concrete ASTM C143 [Urdu & Hindi]

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Slump Test of Concrete ASTM C143 [Urdu & Hindi] *Scope* 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. The program requires a working knowledge of the following ASTM test methods and practices. Referenced Documents ASTM Standards: • C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field. • C138/C138M Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete. • C172 Practice for Sampling Freshly Mixed Concrete. • C173/C173M Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method. • C231 Test Method for Air Con
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