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SITUATION. The basic data for proportioning trial batches for normal weight concrete with an average with an compressive strength of 35 MPa at 28 days are as follows: Slump = 75 mm to 100 mm Water- cement ratio by weight = 0.48 Specific gravity of cement = 3.15 Specific gravity of coarse aggregate 2.68 Specific gravity of fine aggregate = 2.64 Water (net mixing) = 180 kg / m^3 Concrete unit weight = 23.6 kN/m^3 What is the approximate combined weight (kN) of water, cement, coarse aggregate, if the volume of dry rodded coarse aggregate is 0.38m^3/m^3? 13.5 15.5 19.9 21.8

SITUATION. The basic data for proportioning trial batches for normal weight concrete with an average with an compressive strength of 35 MPa at 28 days are as follows: Slump = 75 mm to 100 mm Water- cement ratio by weight = 0.48 Specific gravity of cement = 3.15 Specific gravity of coarse aggregate 2.68 Specific gravity of fine aggregate = 2.64 Water (net mixing) = 180 kg / m^3 Concrete unit weight = 23.6 kN/m^3 What is the approximate combined weight (kN) of water, cement, coarse aggregate, if the volume of dry rodded coarse aggregate is 0.38m^3/m^3? 13.5 15.5 19.9 21.8

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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SITUATION. The basic data for proportioning trial batches for normal weight concrete with an average with an compressive strength of 35 MPa at 28 days are as follows: Slump = 75 mm to 100 mm Water- cement ratio by weight 0.48 Specific gravity of cement = 3.15 Specific gravity of coarse aggregate = 2.68 Specific gravity of fine aggregate = 2.64 Water (net mixing) = 180 kg / m^3 Concrete unit weight = 23.6 kN/m^3 What is the approximate combined weight (kN) of water, cement, coarse aggregate, if the volume of dry rodded coarse aggregate is 0.38m^3/m^3? 13.5 15.5 19.9 21.8
Transcribed Image Text:SITUATION. The basic data for proportioning trial batches for normal weight concrete with an average with an compressive strength of 35 MPa at 28 days are as follows: Slump = 75 mm to 100 mm Water- cement ratio by weight 0.48 Specific gravity of cement = 3.15 Specific gravity of coarse aggregate = 2.68 Specific gravity of fine aggregate = 2.64 Water (net mixing) = 180 kg / m^3 Concrete unit weight = 23.6 kN/m^3 What is the approximate combined weight (kN) of water, cement, coarse aggregate, if the volume of dry rodded coarse aggregate is 0.38m^3/m^3? 13.5 15.5 19.9 21.8
(continuation) How many m^3 of entrapped air present for every m^3 concrete mixture? 0.01 0.1 0.015 0.001 (continuation) If the combined solid volume of cement, water, coarse aggregate and entrapped air is 0.65 m^3 what weight (kN) of dry sand is required? 15.9 13.0 11.6 9.1
Transcribed Image Text:(continuation) How many m^3 of entrapped air present for every m^3 concrete mixture? 0.01 0.1 0.015 0.001 (continuation) If the combined solid volume of cement, water, coarse aggregate and entrapped air is 0.65 m^3 what weight (kN) of dry sand is required? 15.9 13.0 11.6 9.1
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