| 摘要 |
FIELD: construction. ^ SUBSTANCE: filler for concrete in the form of round-shaped grain comprises tight cavity. Cavity is created by means of adhesion of two parts made of clayey raw materials by plastic moulding with further annealing. Porous body is installed in cavity. Perlite is used for creation of porous body. Perlite takes from 1/15 to 1/3 of cavity volume. ^ EFFECT: simplified production of filler. ^ 1 dwg |
