1. What component of concrete that has affect its strength largely? Explain. 2. If you have to choose, an expensive high quality concrete or a less expensive with low quality concrete? Explain. 3. To reduce corrosion on steel reinforcement, what you have to consider in the design? 4. A 300mm X 500mm concrete beam with a 25mm diameter reinforcing bar spaced at 50mm o.c will be constructed using a non-air entrained concrete. The design compressive strength at 28 days is 30 MPa. Design a concrete mix for the beam. The properties of the aggregates and cement to be used are given in the table below. Use a trial batch of 0.15 m3. Coarse aggregate 2.75 (SSD) Fine aggregate Cement 2.56 (SSD) 2.5% Specific Gravity Absorption Moisture content Unit weight rodded) FM 3.15 1.2% 2.5% 4.5% (dry 1750 kg/m³ 2.45

1. What component of concrete that has affect its strength largely? Explain. 2. If you have to choose, an expensive high quality concrete or a less expensive with low quality concrete? Explain. 3. To reduce corrosion on steel reinforcement, what you have to consider in the design? 4. A 300mm X 500mm concrete beam with a 25mm diameter reinforcing bar spaced at 50mm o.c will be constructed using a non-air entrained concrete. The design compressive strength at 28 days is 30 MPa. Design a concrete mix for the beam. The properties of the aggregates and cement to be used are given in the table below. Use a trial batch of 0.15 m3. Coarse aggregate 2.75 (SSD) Fine aggregate Cement 2.56 (SSD) 2.5% Specific Gravity Absorption Moisture content Unit weight rodded) FM 3.15 1.2% 2.5% 4.5% (dry 1750 kg/m³ 2.45

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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