Part 1
Select all answers that are correct
Group of answer choices
a. Sulphate, silica, carbonation and chloride can cause chemicaldamage to concrete.
b. Concrete is a mixture of Portland cement, water, aggregatesand admixtures.
c. Concrete can be damaged by fire, freezing weather, aggregateexpansion, bacterial corrosion and leaching.
d. None of the answers is correct.
e. Concrete has been around for thousands of years.
Part 2
Chemical admixtures:
Group of answer choices
a. can increase the curing rate.
b. can slow the hydration rate.
c. Are the largest component found in concrete. Concrete ismostly admixture.
d. Cement is an example of an admixture.
e. Include accelerators, retarders, corrosion inhibitors,workability agents, bonding agents.
