Q1) Read the following sentences, write true or false, and correct the sentences that are false: 1-Iraqi specification No. 5 limited max SO3 in Portland cement by 1.5% when C4AF< 5%, and by 3% when C 4AF > 8%. 2-The actual value of the heat of hydration depends on water cement ratio. X 3- The alkali silica reaction is very fast, happen between active silica in the cement and the alkalis in aggregate.
Q1) Read the following sentences, write true or false, and correct the sentences that are false: 1-Iraqi specification No. 5 limited max SO3 in Portland cement by 1.5% when C4AF< 5%, and by 3% when C 4AF > 8%. 2-The actual value of the heat of hydration depends on water cement ratio. X 3- The alkali silica reaction is very fast, happen between active silica in the cement and the alkalis in aggregate.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![Q1) Read the following sentences, write true or false, and correct the sentences that
are false:-
1-Iraqi specification No. 5 limited max SO3 in Portland cement by 1.5% when
C4AF< 5%, and by 3% when C 4AF > 8%.
2-The actual value of the heat of hydration depends on water cement ratio. X
X
3- The alkali silica reaction is very fast, happen between active silica in the cement
and the alkalis in aggregate.
4- Sulphate in mixing water should not be more than 10,000 ppm.
✓
5- Higher curing temperature decrease earlier strength, but it increases 28-day
strength of concrete.
Call vings: [SMI](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F699ef126-db3d-4147-be87-3ab8f59737a2%2F96de2329-0de4-46de-8f94-55faa9bcaeaf%2Fyo3du4p_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1) Read the following sentences, write true or false, and correct the sentences that
are false:-
1-Iraqi specification No. 5 limited max SO3 in Portland cement by 1.5% when
C4AF< 5%, and by 3% when C 4AF > 8%.
2-The actual value of the heat of hydration depends on water cement ratio. X
X
3- The alkali silica reaction is very fast, happen between active silica in the cement
and the alkalis in aggregate.
4- Sulphate in mixing water should not be more than 10,000 ppm.
✓
5- Higher curing temperature decrease earlier strength, but it increases 28-day
strength of concrete.
Call vings: [SMI
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