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If concrete is exposed to repeated freezing and thawing after the final set, the final qualities of the concrete may also be __________

If concrete is exposed to repeated freezing and thawing after the final set, the final qualities of the concrete may also be __________ Correct Answer Impair

If concrete is exposed to repeated freezing and thawing after the final set and during the hardening period, the final qualities of the concrete may also be impaired.

Related Questions

Consider the following statements in the light of the philosophy of Locke and mark the correct option:
1. Primary qualities are sensible qualities that depend on the perceiver.
2. Primary qualities are colour, sound, taste and texture.
3. Secondary qualities are those whose existence is independent of any perceiver.
4. Primary qualities are objective properties of things whereas secondary qualities are subjective properties.
Which one is correct with regard to John Locke philosophy?
1. Primary qualities are sensible qualities that depends on their perceiver.
2. Primary qualities are colour, sound, taste and texture.
3. Secondary qualities are those whose existence is independent of any perceiver.
4. Primary qualities are objective properties of things whereas secondary qualities are subjective properties.
Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing
Proper amount of entrained air in concrete results in
(i) Better workability
(ii) Better resistance to freezing and thawing
(iii) Lesser workability
(iv) Less resistance to freezing and thawing
It is desired to freeze 10,000 loaves of bread each weighing 0.75 kg from an initial room temperature of 18°C to a final temperature of -18°C. The bread-freezing operation is to be carried out in an air-blast freezing tunnel. It is found that the fan motors are rated at a total of 80 horsepower and measurements suggest that they are operating at around 90% of their rating, under which conditions their manufacturer’s data claims a motor efficiency of 86%. If 1 ton of refrigeration is 3.52 kW, estimate the maximum refrigeration load imposed by this freezing installation assuming that fans and motors are all within the freezing tunnel insulation and the heat-loss rate from the tunnel to the ambient air has been found to be 6.3 kW. Extraction rate from freezing bread (maximum) = 104 kW
Max Weber used the Greek world 'Charisma' to refer to
1. Qualities acquired by experience
2. Inherited qualities
3. Supernatural qualities
4. Super human qualities
Select the correct answer:
Locke talks about
1. primary qualities
2. secondary qualities
3. empirical qualities
4. external qualities
Select the correct answer:
Consider the following statements for air-entrained concrete: (i) Air-entrainment reduces the water demand for a given level of workability. (ii) Use of air-entrained concrete is required in environments where cyclic freezing and thawing is expectedWhich of the following is TRUE?
A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and low , using dyes of three qualities-- high, medium and low. One shirt requires 1.5 m of cloth .The following table gives respectively : The number of shirts (of each category) produced, in thousands. The percentage distribution of cloth quality in each type of shirt, and The percentage distribution of dye quality in each type of shirt. What is the ratio of the three qualities of dyes in high quality cloth ?
The cracks developed in the concrete pavement due to the freezing and thawing cycle of the aggregates is called S-cracking.