Concrete Technology Questions

• Pozzolana cement is used with confidence for construction of
• Pick up the correct statement from the following:
• The most useless aggregate is one whose surface texture is
• Efflorescence in cement is caused due to an excess of
• The shrinkage of concrete
• The diameter of the Vicat plunger is 10 mm and its length varies from
• Allowable shear strength of concrete, depends upon
• While designing an air entrained concrete
• Concrete containing
• According to Water-Cement Ratio Law, the strength of workable plastic concrete
• The factor which affects workability, is
• To hydrate 500kg of cement full water needed, is
• Pick up the incorrect statemnt from the following. For performing compressive strength test of cement
• To obtain a very high strength concrete, use very fine grained
• Separation of water or water sand cement from a freshly concrete, is known
• An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than
• Workability of concrete mix with low water cement ratio is determined by
• Water cement ratio is
• For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is
• Permissible compressive strength of M 150 concrete grade is