Waterproofing Underground Concrete Structures

The utilization of liquid waterproofing membrane cementitious materials polyurethane liquid membrane and bituminous.

Waterproofing underground concrete structures.

Waterproofing concrete and brick in underground structures. Waterproofing is the formation of an impervious barrier over surfaces of foundations roofs walls and other structural members. Typical products are admixtures for watertight concrete combined with appropriate joint sealing systems for connections construction and movement joints. In general the preferred system is a positive side waterproofing system that protects the structure from all types of attack while providing a tight waterproof membrane.

Others can be applied as soon as the forms are removed. The protection of an underground structure can be performed using a positive side exterior or negative interior waterproofing system. The water vapor escaping from the concrete can prevent the waterproofing material from bonding. Concrete curing times for liquid membranes also vary considerably.

Spray applied membrane can be applied between layers of sprayed or cast in place concrete or applied as a stand alone membrane exhibiting high bond strength to the substrates on both sides of the membrane. Usually there is no sealing membrane to prevent damp and water from penetrating the concrete. The building surfaces are made water resistant and sometimes waterproof. The function of the impermeable barrier is to prevent water penetrations.

Even where underground structures have been built using expensive waterproof concrete to bs 8007 consideration will still need to be given to the waterproofing of construction joints. Waterstop is the most typically used waterproofing material in the construction of underground concrete structures to prevent water leakage at joints of discretely consecutive concrete structures. Some require 14 days or longer. Underground water management sprayable membrane for waterproofing concrete structures.

Most waterproofing systems need protection during backfilling. Liquid water penetration is stopped by the structure itself and cannot entirely pass through into the basement. In which case it is necessary to waterproof the concrete to prevent damaged caused. These for example can be used in water storage tanks wet areas basements stps tunnelling concrete underground structures and other similar structures.

A waterproofing system integrated into the concrete structure.