Answered: TABLE P6.35 Cylinder no. Water…

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

Two batches of concrete cylinders were made with and without a calcium
chloride (CaCl2) accelerator admixture. Six cylinders were made of each batch and
submerged in water for different times before testing for compressive strength
and the results are shown in Table P6.35.
It is required to do the following:
a. Using an Excel sheet, plot the relationship between curing time and
compressive strength of the two mixes on the same graph. Label all axes
and curves.
b. Comment on the effect of the accelerator on the compressive strength of
PCC at early and late ages.

TABLE P6.35
Cylinder no.
Water submergence (days)
Compressive strength of plain concrete (MPa)
Compressive strength of concrete with
accelerator (MPa)
2
3
4
3
14
21
28
7.8 15.8 21.1 24.5 26.8
14.8 20.1 24.0 25.9 26.8
0.8
6.2
3.
2.

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