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首页> 外文期刊>Advances in civil engineering >Lightweight Cement Mortars with Granulated Foam Glass and Waste Perlite Addition
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Lightweight Cement Mortars with Granulated Foam Glass and Waste Perlite Addition

机译：粒状泡沫玻璃和添加废珍珠岩的轻质水泥砂浆

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This article presents the influence of granulated foam glass (GFG) on thermal insulation and mechanical properties of lightweight cement mortars. The mortars were additionally modified with addition of ground perlite dust. Ground expanded perlite waste was introduced into the cement matrix in the amounts of 10%, 20%, and 30% of cement mass. The results show that application of this waste increases the strength of the mortars as well as decreases their thermal conductivity coefficient. A series of mortars were prepared with introduction of granulated foam glass with mass per unit filler/cement ratio equal to 0.6, 0.9, and 1.2. The aggregate composition of GFG was combined from different monofractions in the range 0-2mm so that it filled the mortar volume to the maximum. Additionally, mortars were made, in which 20% of 0-0.25mm GFG volume was replaced with quartz sand with the same granulation. Each mortar series was modified with addition of ground perlite waste in the amount of 20% of cement mass. The results indicate an improvement of thermal insulation properties along with greater participation of perlite in the mortars. The increase of the thermal conductivity coefficient was observed in the mortars, where the GFG was replaced with quartz sand. Greater amount of GFG results in decrease of compressive strength, but it can be improved by replacing part of the lightweight filler with sand or by introducing the addition of ground expanded perlite to the matrix. This also results in lower water absorption of mortars. Research proved that in most cases, the addition of ground expanded perlite decreased the capillary sorption of mortars, as well as the water absorption coefficient by capillary action, with growing proportion of the lightweight filler.
机译：本文介绍了粒状泡沫玻璃（GFG）对轻质水泥砂浆的隔热和机械性能的影响。砂浆还额外添加了研磨珍珠岩粉尘。将磨碎的膨胀珍珠岩废物以水泥质量的10％，20％和30％的量引入水泥基质中。结果表明，这些废料的使用增加了砂浆的强度，并降低了其导热系数。通过引入粒状泡沫玻璃制备一系列灰浆，每单位填料/水泥的质量比等于0.6、0.9和1.2。 GFG的骨料组合物由0-2mm范围内的不同单馏分组合而成，以使砂浆体积达到最大。另外，制得砂浆，其中用相同粒度的石英砂代替20％的0-0.25mm GFG体积。每个砂浆系列都通过添加占水泥质量20％的珍珠岩废料进行改性。结果表明，随着珍珠岩在砂浆中的更多参与，隔热性能得到改善。在砂浆中观察到导热系数的增加，在砂浆中，GFG被石英砂代替。大量的GFG会导致抗压强度降低，但是可以通过用沙子代替部分轻质填料或通过向基体中添加研磨的膨胀珍珠岩来改善它。这也导致砂浆的吸水率降低。研究证明，在大多数情况下，随着轻质填料比例的增加，添加地面膨胀珍珠岩会降低砂浆的毛细吸附，以及通过毛细作用产生的吸水系数。

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