COMPOSITION OF GASSING RAW COMPOUND, ROD MADE OF THIS COMPOUND AND PROCESS OF STATIC FAILURE OF BLOCKS AND STRUCTURES FROM FRAGILE MATERIAL

摘要

FIELD: construction engineering. SUBSTANCE: compound based on unslaked lime contains additives being sodium tetraborate, aluminium powder, hydrolytic starch. Ratio between them is, percent by weight, 0.15-0.45 for sodium tetraborate, 0.50-4.5 for aluminium powder, 0.50-10.00 for hydrolytic starch, the balance being a ground unslaked lime of 0.08-1.25 mm fraction. The compound is used for molding pellets which are contracted to cylindrical rods through a bolt with washers threaded to receive a nut and bolt head or through a pin with washers screwed on its ends. Before laying into a bore hole the rods are water saturated. EFFECT: higher durability and increased service life of rods. 9 cl, 1 tbl, 7 dwg