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首页> 外文期刊>Construction and Building Materials >Physico-mechanical, durability and thermal properties of basalt fiber reinforced foamed concrete containing waste marble powder and slag
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Physico-mechanical, durability and thermal properties of basalt fiber reinforced foamed concrete containing waste marble powder and slag

机译：玄武岩纤维增强泡沫混凝土的物理 - 机械，耐久性和热性能含废大理石粉和炉渣

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Recently, the usage of industrial wastes for concrete production has played an important role for developing environmentally friendly building materials. This work focused on investigating physico-mechanical, durability and thermal properties of basalt fibers (BF) reinforced foamed concrete containing waste marble powder (WMP) and ground granulated blast furnace slag (GGBFS). Foamed concretes were fabricated with 50 kg/m(3) and 100 kg/m(3) contents of a protein-based foaming agent at 0.75 water/binder (w/b) ratio. Two control mixtures in which silica sand used as fine aggregates and containing no BF were developed at each foam content. Other foamed mixtures were produced with WMP as fine aggregates and GGBFS as white Portland cement (WPC) replacement at the rates of 0%, 30% and 60%. BF were also added to the mixtures at the rates of 0%, 1% and 2% by weight of cement. Fresh properties of mixtures investigated were slump and fresh unit weight. Experiments were also fulfilled to evaluate 7, 28, 90 and 180-day water-cured mechanical strengths. Porosity, water absorption and sorptivity were studied after 28 aged cured specimens. Dry unit weight, thermal conductivity and drying shrinkage properties of foamed concrete specimens were assessed on 28 aged specimens. High temperature and freeze-thaw durability of foamed concrete specimens were also examined. Results indicated that very high compressive and flexural strength enhancements of 179.49%, 141.79% and 139.91%, 93.18%, at 7 and 28 days were obtained using WMP and BF addition respectively. Coupling use of 30% GGBFS and 1%BF revealed the highest compressive strength of 32.57 MPa and lowest porosity value of 14.8% at foam content of 50 kg/m3. (C) 2021 Elsevier Ltd. All rights reserved.
机译：最近，用于混凝土生产的工业废物的用法在开发环保建筑材料方面发挥了重要作用。这项工作侧重于研究玄武岩纤维（BF）增强型泡沫混凝土的物理机械，耐久性和热性能，该卷发混凝土含有废物大理石粉末（WMP）和地造粒高炉炉渣（GGBF）。用50kg / m（3）和100kg / m（3）含量的蛋白质的发泡剂，在0.75水/粘合剂（w / b）的比例下制造泡沫混凝土。在每个泡沫含量下，在每个泡沫含量中开发了两种对照混合物，其中使用用作细骨料和不含BF的硅砂。其他泡沫混合物用WMP制备，作为白色波特兰水泥（WPC）以0％，30％和60％的速率替换为白色波特兰水泥（WPC）。也将BF加入到混合物的速率下加入混合物中的0％，1％和2重量％的水泥。调查的混合物的新鲜性质是坍落度和新的单位重量。还满足实验，评价7,28,90和180天的水固化机械强度。在28岁的腌渍试样后研究了孔隙度，吸水和吸附性。在28岁的样品上评估了发泡混凝土样本的干燥单位重量，导热性和干燥收缩性能。还检查了泡沫混凝土样本的高温和冻融耐久性。结果表明，使用WMP和BF分别获得了非常高的压缩和弯曲强度增强179.49％，141.79％和139.91％，93.18％，7和28天。耦合使用30％GGBF和1％BF显示的最高抗压强度为32.57MPa，泡沫含量为50kg / m 3的最低孔隙率值14.8％。 （c）2021 elestvier有限公司保留所有权利。

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