Concrete is required for a column that will be moderately exposed to freezing and thawing. The cross section of the column is 300 × 300 mm. The smallest spacing between reinforcing steel is 30 mm. The specified compressive strength of concrete at 28 days is 40 MPa with a slump of 80 to 100 mm. The properties of materials are as follows: Cement used is type I Portland cement with a specific gravity of 3.15. The available coarse aggregate has a maximum size of 23 mm, a dry-rodded unit weight of 1800 kg/m3, a bulk specific gravity (SSD) of 2.7, absorption capacity of 0.55%, and moisture content (SSD) of 0.25%. The fine aggregate has a bulk specific gravity (SSD) of 2.75, absorption capacity of 1.4%, a moisture content (SSD) of 2.5%, and a fineness modulus of 2.70. The aggregates conform to the ASTM C33-84 requirements for grading.

Concrete is required for a column that will be moderately exposed to freezing and thawing. The cross section of the column is 300 × 300 mm. The smallest spacing between reinforcing steel is 30 mm. The specified compressive strength of concrete at 28 days is 40 MPa with a slump of 80 to 100 mm. The properties of materials are as follows: Cement used is type I Portland cement with a specific gravity of 3.15. The available coarse aggregate has a maximum size of 23 mm, a dry-rodded unit weight of 1800 kg/m3, a bulk specific gravity (SSD) of 2.7, absorption capacity of 0.55%, and moisture content (SSD) of 0.25%. The fine aggregate has a bulk specific gravity (SSD) of 2.75, absorption capacity of 1.4%, a moisture content (SSD) of 2.5%, and a fineness modulus of 2.70. The aggregates conform to the ASTM C33-84 requirements for grading.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Concrete is required for a column that will be moderately exposed to freezing and
thawing. The cross section of the column is 300 × 300 mm. The smallest spacing
between reinforcing steel is 30 mm. The specified compressive strength of concrete at 28
days is 40 MPa with a slump of 80 to 100 mm. The properties of materials are as
follows:
❖ Cement used is type I Portland cement with a specific gravity of 3.15.
◆ The available coarse aggregate has a maximum size of 23 mm, a dry-rodded unit
weight of 1800 kg/m3, a bulk specific gravity (SSD) of 2.7, absorption capacity of
0.55%, and moisture content (SSD) of 0.25%.
The fine aggregate has a bulk specific gravity (SSD) of 2.75, absorption capacity of
1.4%, a moisture content (SSD) of 2.5%, and a fineness modulus of 2.70. The
aggregates conform to the ASTM C33-84 requirements for grading.

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