Waterproofing liquid-applied membrane

Numerous construction products are formulated from asphalt and coal tar for such applications as driveway sealers, cutback asphalts, flashing cements, conerete primers, concrete cold mixes, roof cements, expansion joint fillers, patch liquids, waterproofing liquid-applied membranes, and pipeline eoatings. All these produets are likely to contain... 

Integral Waterproofings and Liquid-Applied Membrane Waterproofings Concrete roofdecks, mortar walls, concrete block walls, water tanks, swimming pools, septic tanks, silos, etc. 

Liquid-applied membrane waterproofing systems using polymer-modified mortar, free from poisonous organic solvents or gases with disagreeable odors (which do not pollute the atmosphere)... 

Liquid-applied polyurethane waterproofing membranes have several advantages, as follows ... 

C-836-89 Standard specification for high-solids-content, cold-applied elastomeric waterproofing membrane for use with separate wearing course. C-898 Guide for use of high-solids-content, cold-liquid-applied elastomeric waterproofing membrane with separate wearing course. 

United States and Canada also apply them. Membranes come as two main types, a liquid that solidifies in place, and a sheet that is stuck to the concrete (see Section 5.3.3). The main problem with waterproof membranes is similar to that of epoxy coating rebars they must be applied without defects. Defects can occur as blow holes, penetrations or mechanical damage to the liquid applied types, or cuts, tears, bad joins or perforations in the sheets. Either type of membrane can be damaged by the overlay of asphalt, either by its heat or mechanical damage from the aggregate particles. 

Types of Covers. In addition to BUR, there are many different types of new membranes that are mostly prefebrieated sheets or liquid-applied materials that cure to form waterproof sheets or closed cell foams. They are made from a wide variety of synthetic organic materials (polymers) with various chemical compositions and additives. In some cases, natural materials such as bitumen, organic fibers, etc. are compounded with them. 

Standard specification for high solids content, cold liquid-applied elastomeric waterproofing membrane with integral wearing surface... 

Blistering, which affects both preformed sheets and liquid-applied materials, is the single greatest problem encountered in appl5fing waterproofing membranes. 

LIQUATHANE is a high performance elastomeric urethane rubber membrane. Applied as a liquid, LIQUATHANE is designed to protect concrete and steel from corrosive attack as well as exhibiting excellent resistance when used as a waterproofing/liquidproofing or between slab membrane. 

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