Design a concrete mix for construction of an elevated tank. The specified characteristic strength of concrete is 30 MPa at 28 days measured on standard cylinders. • Standard deviation can be taken as 4 MPa. • The FA and CA are used are crushed with specific gravity of 2.65 and 2.7 respectively. Fine aggregate have 38% passing a 600 m sieve. • The dry rodded bulk density of CA is 1600 kg/m3, and a slump of 50 mm is necessary. • CA is found to be absorptive to the extent of 1% and free surface moisture in sand is found to be 2%. 3 • Calculate the mix proportions for a batch of 0.080 m . ?
Design a concrete mix for construction of an elevated tank. The specified characteristic strength of concrete is 30 MPa at 28 days measured on standard cylinders. • Standard deviation can be taken as 4 MPa. • The FA and CA are used are crushed with specific gravity of 2.65 and 2.7 respectively. Fine aggregate have 38% passing a 600 m sieve. • The dry rodded bulk density of CA is 1600 kg/m3, and a slump of 50 mm is necessary. • CA is found to be absorptive to the extent of 1% and free surface moisture in sand is found to be 2%. 3 • Calculate the mix proportions for a batch of 0.080 m . ?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Design a concrete mix for construction of an elevated tank. The specified characteristic strength of concrete is 30 MPa at 28 days measured on standard cylinders.
• Standard deviation can be taken as 4 MPa.
• The FA and CA are used are crushed with specific gravity of 2.65 and 2.7
respectively. Fine aggregate have 38% passing a 600 m sieve.
• The dry rodded bulk density of CA is 1600 kg/m3, and a slump of 50 mm
is necessary.
• CA is found to be absorptive to the extent of 1% and free surface moisture in sand is found to be 2%.
3
• Calculate the mix proportions for a batch of 0.080 m .
?
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