| 摘要 |
<p>1,218,411. Mortar and concrete. THERMOCRETE BAUPATENTE - VERWERTUNGSGES. ETAB. 13 March, 1968, No. 12235/68. Heading C1H. Portland cement or lime mortars and concretes contain as a fine aggregate a crushed vitreous slag having a maximum grain size of 3 to 7 mm. and of which, by weight, 3-25% is below 0À06 mm., 9-40% is below 0À2 mm., 43-80% is below 1 mm., and 30-60% is between 0À2 mm. and 1 mm. Suitable fine aggregates are fused boiler slag, direct process slag, granulated blast-furnace slag, slag from the production of phosphorus, sintered garbage incineration slag and mixtures of these. A coarse aggregate of size 3-25 mm. can be included, e.g. foamed slag, natural pumice, chips of volcanic and porous rocks (lava), expanded clay, porous aggregate made from fly ash, expanded slate, sintered grit, sintered garbage incineration slag and mixtures of these. Synthetic resin may be included in the binder.</p> |
