Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials

Durability and hygroscopic behaviour of biopolymer stabilised earthen construction materials
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生物聚合物稳定土建筑材料的耐久性和吸湿行为

DOI:
10.1016/j.conbuildmat.2020.119725
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发表时间:
2020
影响因子:
7.4
通讯作者:
Muguda S
Muguda S
中科院分区:
工程技术1区
文献类型:
--
作者:
Muguda S

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土制建筑材料通常是化学稳定的,以提高其对水引起的退化的耐久性。然而,水泥等化学稳定剂可能会对它们用于稳定的材料的吸湿性和可回收性产生负面影响。本研究探讨了使用生物聚合物(即瓜尔胶和黄原胶)作为稳定剂在土建筑材料的潜力。这些生物聚合物在体现的能量和碳足迹方面比水泥具有一些优势,并且在世界各地广泛使用。以前的研究表明,这些生物聚合物可以提供合适的机械性能,在这里,我们表明,此外,它们可以提供令人满意的耐久性性能和改善的吸湿行为。这些研究结果表明,生物聚合物可能具有很大的潜力,可用作土建筑材料的稳定剂。
Earthen construction materials are often chemically stabilised in order to improve their durability against water-induced deterioration. However, chemical stabilisers like cement can negatively affect the hygroscopic behaviour and recyclability potential of the materials they are used to stabilise. This study investigates the potential of using biopolymers (namely guar and xanthan gums) as stabilisers in earthen construction materials. These biopolymers have some advantages over cement in terms of embodied energy and carbon footprint, and are widely available around the world. Previous research has suggested that these biopolymers can provide suitable mechanical properties and here we show that in addition they can provide satisfactory durability performance and improved hygroscopic behaviour. These findings suggest that biopolymers could have significant potential to be used as stabilisers for earthen construction materials.
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