After placement, the temperature of the concrete was measured and recorded by thermal sensors during the first 7 days. The temperature change with time is given in the figure below and the datum temperature of the concrete mix is known to be-5°C. If formworks are planned to be removed when 70% of maturity of the laboratory samples cured at 20 °C for 7 days is reached, what is the formwork removal time? temperature (°C) 30 28 26 24 22 20 18 16 14 12 10 0 12 24 36 48 60 60 72 84 96 108 120 132 144 156 168 age (hour)

After placement, the temperature of the concrete was measured and recorded by thermal sensors during the first 7 days. The temperature change with time is given in the figure below and the datum temperature of the concrete mix is known to be-5°C. If formworks are planned to be removed when 70% of maturity of the laboratory samples cured at 20 °C for 7 days is reached, what is the formwork removal time? temperature (°C) 30 28 26 24 22 20 18 16 14 12 10 0 12 24 36 48 60 60 72 84 96 108 120 132 144 156 168 age (hour)

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 4
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