Civil Engineering :: Building Materials
- The rocks having alumina or clay as their major constituents are known as
- The harmonious mixing of the clay ingredients, is known as
- The basic purpose of a retarder in concrete is
- Rocks formed due to alteration of original structure due to heat and excessive pressure are called
- Which of the following is the purest form of iron?
- The most common admixture which is used to accelerate the initial set of concrete is
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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 - Fibre glass
- The most important tool in brick laying for lifting and spreading mortar and for forming joints is
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