Concrete Waterproofing with Crystalline Technology

Crystalline chemicals improve concrete durability, lower maintenance costs, and extend building life cycles
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Sponsored by XYPEX Chemical Corp.

Three Case Studies

The effective use of crystalline waterproofing technology products is illustrated by the following projects.

As an Admixture

The triple tower development designed by architect Hijjas Kasturi as a new headquarters  for Maybank in Kuala Lumpur, Malaysia involved the use of diaphragm wall construction incorporating a nine level underground parking garage. A crystalline technology admixture was selected to control of the heat of hydration, reduce shrinkage cracking, give the slab enduring 'self healing' capacity, waterproof the concrete, and increase strength and durability. The basement slab required approximately 24,000 cubic meters of concrete with crystalline waterproofing admixture. In September 1997, the initial pour of approximately 13,200 cubic meters was conducted over a 60-hour period. This project was the third largest continuous concrete pour conducted in the world, and the largest in Southeast Asia.

Excavation and diaphragm wall for Maybank Headquarters, in Kuala Lumpur, Malaysia. Architect: Hijjas Katsuri

Photo courtesy of Xypex

As an Applied Product

For the National Aeronautics and Space Administration (NASA) Neutral Buoyancy Tank, a two-coat application of white crystalline waterproofing was applied to the 50,000 sq. ft. Lab Tank. This tank is used to train astronauts for space walks necessary during construction of the space station. The white crystalline waterproofing coating was chosen as a replacement for a white pool paint finish because of its longer life span and lower maintenance requirements.

NASA Neutral Buoyancy Tank

Photo courtesy of NASA

As a Dry-Shake Application

The slabs of the a 110,000 sq. ft. distribution facility for Duracell in Cleveland, Tennessee, were waterproofed with a dry-shake application of crystalline waterproofing incorporating a floor hardener to increase the abrasion resistance. Due to the presence of a high water table and unstable ground conditions, there was a requirement to use a negative side waterproofing system which also had to be capable of handling fork lift traffic.

Shake Application on Fresh Concrete Slab

Photo courtesy of Xypex


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Originally published in November 2011