scholarly journals Feasibility of Using the Hollow Glass Microsphere to Develop Lightweight CAC-GGBFS-Blended Strain-Hardening Cementitious Composites

2021 ◽  
Vol 8 ◽  
Author(s):  
Wei Fan ◽  
Yan Zhuge ◽  
Xing Ma ◽  
Christopher W.K. Chow ◽  
Nima Gorjian ◽  
...  

Strain hardening cementitious composites (SHCCs) with superior tensile strength and ductility have been utilized as an effective repair material. A corrosion-resistant binder, calcium aluminate cement (CAC)–ground granulated blast-furnace slag (GGBFS) blends, has been introduced into SHCC to expand its application in the concrete sewage network rehabilitation. As a repair material, the lightweight property is particularly favorable as it can broaden its functionality. This article presents a study on developing a novel lightweight CAC-GGBFS-blended SHCC using hollow glass microsphere (HGM), namely, HGMLW-SHCCs. The fine silica sand content was substituted with HGM at 25, 50, 75, and 100 vol% in HGMLW-SHCC. We examined flowability, density, uniaxial compressive behavior, direct tensile behavior, and pseudo strain-hardening indices. Microstructure analysis was also conducted to understand the meso-scale behavior of this new lightweight composite. The newly developed HGMLW-SHCC had a 28-day density of only 1756 kg/m3. Compressive and tensile strengths were determined in the range of 62.80–49.39 MPa and 5.81–4.19 MPa, respectively. All mixtures exhibited significant strain-hardening behavior. Even though the increased HGM content negatively affected the tensile strength of HGMLW-SHCC, it had a positive effect on its ductility. In addition, HGM can reduce crack width and tensile stress fluctuations significantly. The results showed that HGM was a promising material for producing strong and lightweight corrosion-resistant SHCCs to be used as a retrofitting material in the wastewater industry.

2017 ◽  
Vol 458 ◽  
pp. 52-60 ◽  
Author(s):  
Fang Li ◽  
Jing Li ◽  
Jianhong Feng ◽  
Zhanwen Zhang ◽  
Meifang Liu ◽  
...  

2018 ◽  
Vol 75 (1-2) ◽  
pp. 3-6 ◽  
Author(s):  
N. M. Bobkova ◽  
V. V. Savchin ◽  
E. E. Trusova ◽  
Yu. G. Pavlyukevich

2013 ◽  
Vol 25 (12) ◽  
pp. 3265-3268
Author(s):  
冯建鸿 Feng Jianhong ◽  
魏胜 Wei Sheng ◽  
初巧妹 Chu Qiaomei ◽  
史瑞廷 Shi Ruiting ◽  
漆小波 Qi Xiaobo ◽  
...  

2019 ◽  
Vol 12 (2) ◽  
pp. 022003
Author(s):  
Zuoren Xiong ◽  
Chi Zhang ◽  
Jianyang Hu ◽  
Dongying Fu ◽  
Yuelan Lu ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document