1. Calculate the expansion of cement and compare it with the standard limits. 2. Why this test is important?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Calculations
Soundness/expansion of cement =Lz-L1.
L=Measurement taken after 24 hours of immersion in water at a temp. of 27 + 2°C
Sample 1
Sample 2
Lz=Measurement taken after 1 hour of immersion in water at boiling temperature.
Group D
LI (mm)
L2 (mm)
LI (mm)
L2 (mm)
Calculate the mean of two values to the nearest 0.5 mm.
Specifications
6.5
7.2
6.5
8
Specifications
LQS No.5:1984
BS 12:1991
Discussion for each group:
Expansion
<10 mm
<10 mm
1. Calculate the expansion of cement and compare it with the standard limits.
Note:
2. Why this test is important?
If the expansion exceeds a specified value, a further test is made after the cement has been spread
and aerated for 7 days. The result of second expansion test should be less than 5 mm.
Transcribed Image Text:Calculations Soundness/expansion of cement =Lz-L1. L=Measurement taken after 24 hours of immersion in water at a temp. of 27 + 2°C Sample 1 Sample 2 Lz=Measurement taken after 1 hour of immersion in water at boiling temperature. Group D LI (mm) L2 (mm) LI (mm) L2 (mm) Calculate the mean of two values to the nearest 0.5 mm. Specifications 6.5 7.2 6.5 8 Specifications LQS No.5:1984 BS 12:1991 Discussion for each group: Expansion <10 mm <10 mm 1. Calculate the expansion of cement and compare it with the standard limits. Note: 2. Why this test is important? If the expansion exceeds a specified value, a further test is made after the cement has been spread and aerated for 7 days. The result of second expansion test should be less than 5 mm.
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