Cement concrete is prove to be more economical than _____

The water enters into chemical action with cement and this action causes ____ and ____ of concrete.

The strength of well compacted concrete with good workability is depended only on the _____

Most important affect of corrosion is the formation of _____

All ____ tend to accelerate the setting of cement and to improve the strength of concrete in early stages.

1:2:4, 1:3:6, etc. Are used in which method of volumetric proposition.

For lean concrete bases and simple foundation for masonry walls ____ grades of concrete may be used.

The ____ is most liable to corrosion.