Friday, July 12, 2013

Asbestos in Mortar

Mortar is essentially the "glue" used to bind bricks, concrete blocks and stone together when these materials can be used as wall construction. Mortar they are able to double for repairs too for cosmetic reasons to fill gaps in construction when building materials aren't uniform in proportions or shape.

In the past created from a simple mixture of dirt and clay, concrete mortar first made an appearance during the Greco-Roman period. Today, you will find a number of different types of mortar, including cement mortar, polymer, and lime mortar. Through the first 1 / 2 of the twentieth century, asbestos mortar was a very common building material. The asbestos mixture comprised of 4 parts amphibole asbestos with one part chrysotile the materials were ground inside a powder and sifted towards the mix. Coarse materials were put to use for the actual lounging process, while finer material was applied for surface plastering. This produced a surface that was both fire-resistant and waterproof, giving exactly the same tensile strength as concrete but half the load.

The use of asbestos in building material is becoming eliminated for most nations since the early eighties. However, you'll find more than 750,000 public structures inside the U.S. alone (and numerous older houses) that also have substantial amounts of asbestos-that contains materials, including asbestos mortar. It's that's why that masons, bricklayers, demolition employees and restoration specialists are more prone for asbestos disease.

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