未来的建筑材料:裂缝自愈混凝土

地质学和生物学的结合正在给建筑材料带来新突破,这就是能够使裂缝自愈的混凝土。那么其中的秘密武器是什么?答案是细菌。

荷兰代尔夫特理工大学教授亨德里克·容克斯(Hendrik Jonkers)过去6年一直尝试开发“生物混凝土”。他在混凝土中添加了特殊的“愈合材料”。当水通过裂缝渗透进混凝土时,这种材料将被激活。当材料被激活后,“魔法”就将上演。

容克斯使用了能在强碱性混凝土环境中生存数十年的芽孢杆菌,并利用乳酸钙作为这些细菌的营养来源。这些细菌和化学物质被封装在由生物降解塑料制成的胶囊中,并被埋入混凝土。当有水接触这一胶囊时,胶囊将会融化,细菌将开始生长,并以乳酸钙作为营养来源生成混凝土的主要成分石灰石。随后,裂缝将会“愈合”。

到目前为止,这种生物混凝土能在约3周时间里愈合最多0.8毫米宽的裂缝。这种材料也可以被掺杂在常规混凝土之中,带来裂缝自愈的效果。

容克斯表示:“自然给我们带来了许多免费的功能。如果我们能在材料中利用这些功能,那么将可以从中受益。”

未来的建筑材料:裂缝自愈混凝土
生物混凝土带来的好处显而易见。目前,混凝土是全球最常用的建筑材料,而通过采用具有自愈能力的混凝土,钢筋用量可以减少,从而降低建筑成本。此外,在建造危险物质容器时,这也是一种更理想的材料。因为当容器需要维修时,此类材料可以避免工人暴露在危险环境中。不过容克斯也承认,在短期内,以传统方式修复混凝土裂缝更为经济。

目前,研究人员仍在测试,生物混凝土在极端温度和压力情况下的表现。如果一切进展良好,那么这款材料将于明年被投向市场。

明年,欢迎造价员童鞋来掌中广材就“裂缝自愈混凝土”询价哦!

随时随地快速找到各地信息价和靠谱市场价,如果你还未下载APP,点击这里下载掌中广材

(内容来源于网络)



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