| 摘要 |
The thermally-conductive lean concrete comprises less than 120 kg/m 3>of binder such as Portland cement, 95 wt.% of natural sand with rounded grains, which have a grain size of = 0/1 f5 according to EN 13139 and EN 13242, and 25 wt.% of breaking sands with angular grains, which have a grain size of = 0/2 f5, where the natural sand with rounded grains contains no portions in gravel grain size or breaking material. The thermal resistance of the concrete is = 0.36 Km/W. |
