CGN 3501 Lab 1(Lab Manual)

CGN 3501 Lab 1(Lab Manual) - Laboratory Exercise#1 Tests on...

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9 Laboratory Exercise #1 Tests on Aggregates Used in Portland Cement Concrete Introduction: Aggregates typically make up 70-80% of the volume of Portland cement concretes and over 90% of asphalt concretes. Thus, their properties (such as gradation, size, shape, pore characteristics, surface traits, and strength) play important roles in determining the properties of the composite materials in which they are to be used. Knowledge of relative density/specific gravity, absorption, unit weight and voids content are necessary for the proper design of both Portland cement and bituminous concretes. Purpose: The purpose of this laboratory exercise is to introduce the student to some of the geometrical and physical properties of aggregates, and to the standard test procedures for these properties. The properties to be examined include: Fine Aggregate Sieve Analysis - ASTM C 136 Bulk Specific Gravity (Dry) - ASTM C 128 Bulk Specific Gravity (SSD) - ASTM C 128 Apparent Specific Gravity - ASTM C 128 Absorption - ASTM C 128 Moisture Content - ASTM C 566 Coarse Aggregate Sieve Analysis - ASTM C 136 Bulk Specific Gravity (Dry) - ASTM C 127 Bulk Specific Gravity (SSD) - ASTM C 127 Apparent Specific Gravity - ASTM C 127 Absorption - ASTM C 127 Moisture Content - ASTM C 566 Dry Rodded Unit Weight - ASTM C 29
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