Abstract: A method for manufacturing a thick asphalt sheet comprises preparing a thick sheet material made of non-woven fabric of synthetic material, passing said sheet material through at least one pair of pressing rolls from the upper side to the lower side and feeding and storing molten petroleum asphalt into a concavity formed on the upper side of said pair of rolls, whereby the molten petroleum asphalt is pressed into the sheet material when said material passes through said pair of rolls, thereby forming an asphalt sheet. The asphalt sheet thus manufactured is immediately led onto a processed ground surface to form a waterproofing layer thereon.

Abstract: Surfaces of roads, bridges, floors, etc., are easily paved by using a mixture of at least one of granular, powdery and flaky asphalt material and a suitable paving aggregate and applying heat and press thereto at the working site.

Abstract: This invention provides a novel granular asphalt which comprises granules having the size of from about 0.074 to about 10 mm and being in the shape of a polyhedron having at least one acute angle. The granular asphalt has excellent properties. In particular, it can be melted rapidly and easily with small thermal capacity and slight heating, without causing thermal decomposition, denaturing and air pollution. The granular asphalt is useful, for example, for producing asphalt compound, cutback asphalt, rubberized asphalt, etc., for use in water-proofing, paving, sealing, etc., and for making asphalt block, asphalt tile, asphalt roofing, tarpaulin paper, flooring sheet, paint and varnish, etc.