Lowering Concrete Porosity to Reduce Cracking

The “Grow Wild” phase of construction at the Nashville Zoo at Grasmere, including new bear, monkey and rhino habitats, has just been completed in time for the busy summer season.

During the past year, the construction activity at the Nashville Zoo included two new animal exhibits and vastly upgraded existing habitats. The new habitats include: a large Andean Bears exhibit, with a Peruvian lodge in a hillside landscape where Andean bears and a few other species live; an elevated walkway through the woods with a tree-top view of Spider Monkeys; and the repurposed elephant habitat that now houses a herd of White Rhinoceros.

Protecting concrete exposed to outdoor environmental conditions from deterioration means primarily sealing the porous concrete against the penetration of water or chemicals. PENETRON crystalline materials provided a cost-effective waterproofing solution. For amorphous structures found in zoo habitats that feature sculpted rock landscapes, waterfalls, and pools, a crystalline admixture capable of generating non-soluble crystalline networks throughout the cracks, pores, and capillary tracts of the concrete is the solution.

Many of the habitats at the Nashville Zoo with moist and wet environments are the ideal conditions for PENETRON crystalline technology to excel and provide maximum protection. The non-toxic admixture has zero impact on the sensitive fauna and flora in the habitat.

PENETRON ADMIX was used by the construction team to provide an integrated waterproofing solution for all water-related habitat areas that feature waterfalls, pools, and foundation structures for the viewing areas. Delivered in pre-measured soluble bags, it is easily mixed in during batching and unaffected by climatic conditions, becoming an integral part of the concrete matrix for the life of the concrete. Adding the mix to the concrete eliminates the need for any surface-applied protection systems. This example of construction technology in action.

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