Durability enhancements using fabric formwork
Durability enhancements using fabric formwork
复制标题
使用织物模板增强耐用性
DOI：
10.1680/macr.13.00120
复制
发表时间：
2012
影响因子：
2.7
通讯作者：
M. Evernden
中科院分区：
文献类型：
--
作者：
J. Orr;A. Darby;T. Ibell;M. Evernden
通过用可渗透织物的柔性片材代替传统的混凝土模具，与同等强度的棱柱形构件相比，可以提供高达40%的材料节省的优化混凝土构件的构造是可能的。本文详细介绍了最近在巴斯大学建筑研究机构创新建筑材料中心进行的测试结果，这些测试证明了织物浇注混凝土具有显著的额外耐久性优势。使用加速试验方法，50%的非稳态氯离子扩散系数和碳酸化系数的平均减少被发现时，比较混凝土样本对渗透性和不渗透性表面铸造。吸附性、表面硬度和扫描电子显微镜测试表明织物浇注混凝土发生了进一步的有益变化。综合结果表明，织物模板可用于创建强度和耐久性优化的结构。
By replacing conventional concrete moulds with flexible sheets of permeable fabric, the construction of optimised concrete elements that provide material savings of up to 40% when compared with an equivalent strength prismatic member is possible. This paper details the results of recent tests undertaken at the Building Research Establishment Centre for Innovative Construction Materials at the University of Bath that demonstrate significant additional durability advantages for fabric-cast concrete. Using accelerated test methods, 50% average reductions in both the non-steady state chloride diffusion coefficient and carbonation coefficients were found when comparing concrete samples cast against permeable and impermeable surfaces. Sorptivity, surface hardness and scanning electron microscopy tests demonstrate further beneficial changes in the fabric-cast concrete. The combined results demonstrate that fabric formwork may be used to create structures optimised for strength and durability.