Use the British method to design an air-entrained concrete trial mix with a volume of (0.04) m?, if you know the following: - The characteristic compressive strength at 28 days is (33) MPa, and k = 1.64, s =7 MPa. - The used cement is sulfate resisting Portland cement, - The slump = 100 mm. - The maximum free water to cement ratio = 0.40 (by weight). - The minimum cement content = 400 kg/m®, - The maximum cement content = 650 kg/m’. - Air content = 6.5 %. - Maximum size of aggregate = 10 mm. - Type of aggregate: coarse: crushed, fine: uncrushed. - % passing (0.6) mm sieve for fine aggregate = 60%. (20%)
Use the British method to design an air-entrained concrete trial mix with a volume of (0.04) m?, if you know the following: - The characteristic compressive strength at 28 days is (33) MPa, and k = 1.64, s =7 MPa. - The used cement is sulfate resisting Portland cement, - The slump = 100 mm. - The maximum free water to cement ratio = 0.40 (by weight). - The minimum cement content = 400 kg/m®, - The maximum cement content = 650 kg/m’. - Air content = 6.5 %. - Maximum size of aggregate = 10 mm. - Type of aggregate: coarse: crushed, fine: uncrushed. - % passing (0.6) mm sieve for fine aggregate = 60%. (20%)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
a) Use the British method to design an air-entrained concrete trial mix with a volume of (0.04) m?, if you know the following: - The characteristic compressive strength at 28 days is (33) MPa, and k = 1.64, s =7 MPa. - The used cement is sulfate resisting Portland cement, - The slump = 100 mm. - The maximum free water to cement ratio = 0.40 (by weight). - The minimum cement content = 400 kg/m®, - The maximum cement content = 650 kg/m’. - Air content = 6.5 %. - Maximum size of aggregate = 10 mm. - Type of aggregate: coarse: crushed, fine: uncrushed. - % passing (0.6) mm sieve for fine aggregate = 60%. (20%)
![a) Use the British method to design an air-entrained concrete trial mix with a
volume of (0.04) m³, if you know the following:
- The characteristic compressive strength at 28 days is (33) MPa, and k = 1.64,
s = 7 MPa.
The used cement is sulfate resisting Portland cement.
The slump 100 mm.
- The maximum free water to cement ratio = 0.40 (by weight).
The minimum cement content = 400 kg/m'.
The maximum cement content =
%3D
650 kg/m'.
Air content =
6.5 %.
- Maximum size of aggregate = 10 mm.
- Type of aggregate: coarse: crushed, fine: uncrushed.
% passing (0.6) mm sieve for fine aggregate = 60%.
(20%)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F64f8a28b-f302-42e5-b186-62c5650c66b5%2F5a95a4e4-3533-4632-bbc9-5e011fd1286e%2Fhbny6t_processed.jpeg&w=3840&q=75)
Transcribed Image Text:a) Use the British method to design an air-entrained concrete trial mix with a
volume of (0.04) m³, if you know the following:
- The characteristic compressive strength at 28 days is (33) MPa, and k = 1.64,
s = 7 MPa.
The used cement is sulfate resisting Portland cement.
The slump 100 mm.
- The maximum free water to cement ratio = 0.40 (by weight).
The minimum cement content = 400 kg/m'.
The maximum cement content =
%3D
650 kg/m'.
Air content =
6.5 %.
- Maximum size of aggregate = 10 mm.
- Type of aggregate: coarse: crushed, fine: uncrushed.
% passing (0.6) mm sieve for fine aggregate = 60%.
(20%)
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