Concrete Technology Questions

• For road pavements, the cement generally used, is
• Pick up the correct proportions of chemical ingredients of cement
• If X, Y and Z are the fineness modulli of coarse, fine and combined aggregates, the percentage (P) of fine aggregates to combined aggregates, is
• The bulk density of aggregates does not depend upon :
• After casting, an ordinary cement concrete on drying
• The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds
• According to I.S. : 456, the number of grades of concrete mixes, is
• Workability of concrete is measured by
• Pick up the correct statement from the following:
• Pick up the correct statement from the following:
• For compacting plain concrete road surface of thickness less than 20 cm, we use
• Specified compressive strengh of concrete is obtained from cube tests at the end of
• Addition of pozzolana to cement
• For construction of structures in sea water, the cement generally preferred to, is
• The grade of concrete not recommended by I.S. : 456, is
• Segregation is responsible for
• The final operation of finishing floors, is known as
• The produce impermeable concrete
• According to the recommendations of IS : 456-1978, the expansion joints
• The datum temperature for maturity by Plowman, is