用于气候适应性路面的基于废弃物的透水性混凝土。

Waste-Based Pervious Concrete for Climate-Resilient Pavements.

作者信息

Ho Hsin-Lung, Huang Ran, Hwang Lih-Chuan, Lin Wei-Ting, Hsu Hui-Mi

机构信息

Institute of Materials Engineering, National Taiwan Ocean University, No. 2, Peining Rd., Keelung 202, Taiwan.

Department of Harbor and River Engineering, National Taiwan Ocean University, No. 2, Peining Rd., Keelung 202, Taiwan.

出版信息

Materials (Basel). 2018 May 27;11(6):900. doi: 10.3390/ma11060900.

DOI:10.3390/ma11060900

PMID:29861478

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6025085/

Abstract

For the sake of environmental protection and circular economy, cement reduction and cement substitutes have become popular research topics, and the application of green materials has become an important issue in the development of building materials. This study developed green pervious concrete using water-quenched blast-furnace slag (BFS) and co-fired fly ash (CFFA) to replace cement. The objectives of this study were to gauge the feasibility of using a non-cement binder in pervious concrete and identify the optimal binder mix design in terms of compressive strength, permeability, and durability. For filled percentage of voids by cement paste (FPVs) of 70%, 80%, and 90%, which mixed with CFFA and BFS as the binder (40 + 60%, 50 + 50%, and 60 + 40%) to create pervious concrete with no cement. The results indicate that the complete (100%) replacement of cement with CFFA and BFS with no alkaline activator could induce hydration, setting, and hardening. After a curing period of 28 days, the compressive strength with different FPVs could reach approximately 90% that of the control cement specimens. The cementless pervious concrete specimens with BFS:CFFA = 7:3 and FPV = 90% presented better engineering properties and permeability.

摘要

为了环境保护和循环经济，水泥减量及水泥替代品已成为热门研究课题，绿色材料的应用也已成为建筑材料发展中的一个重要问题。本研究利用水淬高炉矿渣（BFS）和共烧粉煤灰（CFFA）替代水泥，开发出了绿色透水混凝土。本研究的目的是评估在透水混凝土中使用无水泥粘结剂的可行性，并根据抗压强度、渗透性和耐久性确定最佳粘结剂配合比设计。对于水泥浆体孔隙填充率（FPV）为70%、80%和90%的情况，将CFFA和BFS作为粘结剂（40 + 60%、50 + 50%和60 + 40%）混合，制成不含水泥的透水混凝土。结果表明，在不使用碱性激发剂的情况下，用CFFA和BFS完全（100%）替代水泥可引发水化、凝结和硬化。养护28天后，不同FPV的抗压强度可达到对照水泥试件的约90%。BFS:CFFA = 7:3且FPV = 90%的无水泥透水混凝土试件具有更好的工程性能和渗透性。