This residential building (basement, ground, two parking levels, eight typical floors and roof) was built in Dubai for a prominent UAE developer. The site lies in an area with a high groundwater table, making basement waterproofing essential. Baumerk Crystal PW 25 crystalline admixture was specified and added to the concrete mix to protect the structure against water ingress. Baumerk Swellband A waterstop was installed at horizontal and vertical construction joints to provide comprehensive waterproofing throughout the structure.
The waterproofing performance of this project is built on the properties of Baumerk Crystal PW 25. Crystal PW 25 is a hydrophilic crystalline waterproofing admixture that reacts with cement and water to start a catalytic process, forming a protective crystalline network inside the concrete's pores, capillaries and cracks and significantly reducing permeability. It is non-toxic, safe for use in water tanks and removes the need for additional waterproofing applications. As a Permeability Reducing Admixture for Hydrostatic Conditions (PRAH), it protects concrete against both positive and negative water pressure of up to 14 bar. Swellband A is an acrylic polymer-based swelling waterstop that expands in a controlled way on contact with water, so it does not swell prematurely when cast into concrete.