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Grout to Reinforce Masonry Structures

Wednesday, January 11, 2017

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A new injection grout is made to help reinforce masonry on aging buildings and bridges.

Masonry restoration mortar systems manufacturer Cathedral Stone Products Inc. (Hanover, MD) says its Jahn M40 injection grout can be injected into cracks to stabilize masonry, including behind concrete or masonry piers, walls, arches, monuments or building facades.

cathedral stone
Cathedral Stone

Holes are drilled through the wall in preparation for grout injection.

Unlike epoxy grouts, Cathedral says, this product is a mineral-based grout that bonds naturally to masonry and is vapor-permeable so moisture or salt trapped inside masonry can escape. In field applications, salt passes through the surface of the substrate as efflorescence, which is then removed by wind or rain, it explains.

Vapor permeability reportedly greatly reduces the potential for deterioration caused by salt reactions in combination with freeze-thaw cycling, making Jahn M40 appropriate for repairs to public infrastructure, Cathedral adds.

Because the single-component injection grout mixes with water, preparation is easy and consistency during application is improved, according to the company. Moreover, cleanup and disposal is said to be simple because the product is water-based and, as such, is environmentally and worker-safe, it adds.

More information: www.cathedralstone.com/.

   

Tagged categories: Bridges; Cathedral Stone Products; Grout; Infrastructure; Masonry; Masonry waterproofing; Permeability

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