Q1: A/ Explain the concrete failures and which type is the common for concrete in Iraq? B/ Define A.C.V and list Aggregate shape? C/What is the effect of chloride in aggregate?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Aggregate Homework --No. (2)
Q1: A/ Explain the concrete failures and which type is the common
for concrete in Iraq?
B/ Define A.C.V and list Aggregate shape?
C/What is the effect of chloride in aggregate?
Q2: Example: compare this sample of fine aggregate with Iraqi and
ASTM specification in grading.
Sieve
9.5
4.75
2.36
1.18
0.6
0.3 0.15
Pan
Size (mm)
Returned
45
152
96
88
53
32
20
Weight (gm)
Q3: Define the fallowing
1- Aggregate absorption
2- Angularity number
3- Mortar-bar
Q4: why the use of larger aggregate size don't contribute to higher
strength?
Q5: For a sample of coarse aggregate the saturated surface dry
weight (2000gm) its dry weight (1982 gm) and its immersed weight
(1238 gm) find:
-The apparent specific gravity.
- The absorption
Q6: what the determination of the max. aggregate size depend on ?
Q7: give the relation between the fallowing
1- Surface roughness of aggregate and workability
2- Strength of concrete and surface roughness of aggregate
Q8: compare between Rounded and Flaky aggregate
Q9: what the factor affected on the minimum drying shrinkage
Transcribed Image Text:Aggregate Homework --No. (2) Q1: A/ Explain the concrete failures and which type is the common for concrete in Iraq? B/ Define A.C.V and list Aggregate shape? C/What is the effect of chloride in aggregate? Q2: Example: compare this sample of fine aggregate with Iraqi and ASTM specification in grading. Sieve 9.5 4.75 2.36 1.18 0.6 0.3 0.15 Pan Size (mm) Returned 45 152 96 88 53 32 20 Weight (gm) Q3: Define the fallowing 1- Aggregate absorption 2- Angularity number 3- Mortar-bar Q4: why the use of larger aggregate size don't contribute to higher strength? Q5: For a sample of coarse aggregate the saturated surface dry weight (2000gm) its dry weight (1982 gm) and its immersed weight (1238 gm) find: -The apparent specific gravity. - The absorption Q6: what the determination of the max. aggregate size depend on ? Q7: give the relation between the fallowing 1- Surface roughness of aggregate and workability 2- Strength of concrete and surface roughness of aggregate Q8: compare between Rounded and Flaky aggregate Q9: what the factor affected on the minimum drying shrinkage
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