Asphalt stain

Stain (ASTMD1328). This test measures the amount of stain on paper or other ceUulosic materials by asphalt. Variations of the cigarette paper stain procedure include the Barber stain, usually conducted at 54.4°C and 3.9 MN (400 g-force). Talc stain tests are also used. 

Bitumen, or asphalt, and naphtha are described much as Dioscorides describes them. Maltha is a product of similar character, will take fire and burn even upon water, and can be extinguished only by earth. The uses of bitumen were for medicines for coating the inside of vessels of copper or brass for the purpose of protecting them from the action of fire for staining bronze statues as a cement instead of mortar for buildings, as in the walls of Babylon for varnishing iron and the heads of nails to prevent their rusting. 

The stain index is a measure of the sweating tendency of asphalt and its homogeneity. 

Use 1 to 2 oz/gal for cleaning floors and walls. Use full strength to remove oil, grease, tar, gum, asphalt, fresh paint, adhesives, scuff marks and lipstick stains. Brush where necessary. Rinse with water. For prolonged use, wear rubber gloves. Gardner Straight Line Washability Test ... 

Products and Uses Found in paints, stains, finishes, varnish thinner, dry-cleaning fluid, asphalt solvent, and naphtha soaps. Used for eggs (shell), fruits (fresh), and vegetables (fresh) as a coloring agent, coating (protective), solvent, and various other uses. 

Uses Preservative for emulsion coatings, stains, caulks, pigment slurries, adhesives, acrylic stucco systems. Joint cements, asphalt emulsions, wax emulsions, and inks... 

NFPA Health 2, Flammability 2, Reactivity 0 Uses Solvent and stabilizer for shoe creams and floor waxes solvent in paint and lacquers, for oils, fats, waxes, resins, rubber, and asphalt substitute for turpentine cleaning machinery stain removal cleaning fluids lubricants motor fuel additive... 

The slurry mix or mixtures that satisfy the desired consistency is used to determine its setting characteristic. A mix passing the consistency test is poured onto a 152 by 152 mm asphalt felt pad and shaped to 6 mm thickness using a 6 mm template. At the end of 15 min, at 25° 1°C and 50% 5% relative humidity, a white paper towel or tissue is lightly pressed or blotted on the slurry surface. If no brown stain is transferred to the paper, the slurry is considered set. If a brown stain does appear, repeat the blot procedure at 15 min intervals. After 3 h of blotting, 30 min (or longer) blot intervals would be suitable. 

Finally, when FWD measurements are available from which the developed strains at the critical interlayer can be determined, fatigue equations derived in relation to the tensile stain of the asphalt or the vertical strain of the subgrade criteria may also be used in PMS to predict the structural failure of the pavement, hence prolonging the pavement s life. 

Fourier transform IR spectroscopy, SEM, energy dispersive X-ray spectroscopy and tensile testing were used to characterise a fully adhered EPDM roofing membrane which had exhibited surface degradation in the form of brownish staining and subsequent failure. The results suggested that the cause of the staining and failure could be attributed to the rubberised asphalt adhesive. 6 refs. 

Neoprene 12% Bitumen/asphalt compatible good water resistance good adhesion to metals low cost High shrinkage only dark color very slow curing stains wood/ stone... 

The backup material must be unaffected by any solvent contained in the sealant. Backup material containing asphalt, coal tar, or polyisobutylene should never be used. These ex-trudable oils are incompatible with some sealants and may cause loss of adhesion. It is quite possible that these extrudables may cause staining of porous substrates. 

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