Asphalt putties

Asphalt putties of two general types have been available for decades. Asphalt emulsions (with water) have often been used to coat the tops and outsides of steel stacks, where they dry to a hard, often brittle, coating. Asphalt coatings are also available in which the asphalt is extended or softened with a pertroleum solvent. Coatings and putties of this type are less likely to become brittle. Both types have occasionally been used as membranes under brickwork where safety engineers have been concerned that there may be safety hazards connected with the use of hot asphalt. 

Some safety engineers have become obsessed with fears of safety problems with hot asphalt, although very few injuries or accidents have been traceable to it over the several centuries that it has been used industrially. Asa result, there have been many efforts to substitute cold asphalt putties for hot asphalt as a membrane material. These materials and their limitations have been discussed above. As a membrane for floor installations, such putties are often usable providing they are never subject to a standing liquid head, but less frequently for trenches and pits. Remember, if asphalt emulsions are put in service before all the water has dried out of them, they can reemulsify and may be washed out. 

RO-40. (Georgia Marble] Ground calcium carbonate filler for asphalt, putty, ceramic material foamed compds. 

Asphalt has been used as a major component in many coating formulations. These include epoxy-asphalts (much used in refineries) and urethane-asphalts. Of these the urethane-asphalts, some of which are true copolymers, are the most satisfactory substitutes for hot asphalt. They can be used at exposures higher in temperature than can hot asphalt due to their freedom from cold flow, and are reasonably good barriers. Like the asphalt emulsions and solvent putties, however, they can be penetrated, though at a much slower rate, by small molecule acids. Fluid (cold) applied membranes are discussed elsewhere in this volume. 

Chem. Descrip. Cellulose fibers CAS 9004-34-6 EINECS/ELINCS 232-674-9 Uses Reinforcing fiber for asphalt plastic roof cement, caulks, putties, aluminum roof coating, adhesives, compounded rubber systems Features Provides inaeased vise, and sag resistance, dispersion in rubbers, inc. grn. sir., modulus, hardness, tear str. and reduces shrinkage asbestos replacement... 

Chem. Desaip. Ground calcium carbonate CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Pigment, filler, reinforcement for paper, paint, polymers, food, esp. polyolefins, carpet backing, caulks, sealants, putties, asphalt, ceramics, foamed compds. mild abrasive in cleaners Features Coarse ground... 

Coal tar (pitch) Asphalt Solvents Roofing putty Wood dusts Fiberglass Asbestos Heat... 

Walls, siding, ceilings (acoustieal blocks, felts, bricks, brick siding, building blocks, masonry coatings, plaster boards, putty, asphalt, soundproofing, stucco base)... 

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