Civil Engineering - Building Materials - Discussion

Lime concrete is generally used for foundations in dry-subgrade while.

For moist subgrade with high sub-soil water (usually 15 in Or less below the foundation level), cement concrete should always be used. In such situations the foundation concrete should not be leaner than 1:4:8 (1 cement 4 sand : 8 stone ballast).

The masonry work over the foundation lime concrete should be started only after 7 days.

In case of cement concrete, however, the masonry work over the foundation concrete may be started after 48 hours of its laying.

Option 'C' is the correct answer.

Option 'C' is the correct answer.

USES:

Lime in building industry is used for various purposes such as.

A matrix for lime concrete used in building foundations and filling where early setting is not required,

For preparing mortar for bedding bricks and stones in masonry works,

As a cementing material in plaster for covering walls and pointing in preserving joints, and.

For whitewashing and colour washing.

The answer should be - C.

Yes, option c is correct, lime concrete is used for foundation also.

Lime Concrete Uses in construction:

Lime concrete can be used for the construction of temporary structures or unimportant structures which are built for the ease of construction of permanent structures like tunnels, bridges, retaining walls, dams etc.

It has low thermal conductivity used for flooring at the ground level of old buildings.

Lime concrete mixed with an insulating material like lightweight clay or pumice is used for flooring purposes.

Masonry before the 20th century was done using lime concrete due to the elasticity of the lime mortar which allowed expansion or contraction of the walls without damaging masonry units.

It adjusts well when coming into contact of any surface due to its flexibility and hence forms a good bottom base and upper base construction for cement base.

The foundation base of load-bearing walls can be constructed using Lime concrete.

LIME CONCRETE CEILING:

LIME CONCRETE FLOORING.

The use of lime became obsolete over time due to its inconsistent quality, and long initial setting time but lime has been rediscovered to be a more environmentally sustainable binding material. The use of lime has been evolved over time and used for temporary constructions, insulation purposes, and underwater constructions to some extent when mixed with volcanic ash.

C is the correct answer.