Workability and environmental evaluation of using sunflower stalk ash (SSA) as an alkali activator with blast furnace slag (BFS) and black rice hull ash (BRHA) to prepare geopolymer grouts
Zhijing Zhu,
Xiuhao Li,
Rentai Liu
et al.
Abstract:To solve the problem of environmental pollution from stockpiling of solid waste and to achieve safe and efficient underground engineering, an environment-friendly waste-based ternary geopolymer grout was developed using BFS, SSA, and BRHA. KOH-activated grouts were used as the controls. The applicability of grouts with different SSA additions was also investigated. The results showed that the 28-day compressive strength of SSA-activated grout reached 24.31 MPa, which exceeded that of the control group by 163.7… Show more
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