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摘要

A method for manufacturing self compacting and other struc­tural lightweight aggregate concrete in the density interval of 800 - 1800 kg /M<3> by, in a first step, mortar is mixed using Port­land cement and/or another type of cement, water, admixtures, natural rock-type aggregates and filler in the density interval above 2 000 kg/m<3>, and, in a second step, adding lightweight aggregates. Rock-type aggregates having a maximum particle size of 8 mm are used in the mortar. The mortar paste volume compris­ing cement, water, air and the part of aggregates and filler passing through a 0.25 mm sieve is adjusted to at least 45 vol.­% of the total concrete volume and at least 60 vol.-% of the to­tal mortar volume. The yield stress tau0 of the mortar is adjusted to a value within the interval 10 - 600 Pa, the plastic viscos­ity mum of the mortar is adjusted to 0,5 - 35 Pa.s. Lightweight aggregate is added so that its volume is 20 - 45 vol.-% of the total concrete volume.