Experimental study on the preparation of slope protection bricks by self-cementation and solidification of coal gangue-based geopolymer
FENG Zihao
KONG Lingdong
KONG Zhuangzhuang
GAO Jihong
MA Youcai
LIU Fuxiu
CHEN Peng
Abstract：After mechanical activation of gangue powder curing cemented gangue mechanism sand and aggregate,research on mineral powder mixing,alkali content,alkali exciter modulus content on the strength of the ground polymer,to explore the feasibility of preparation of slope protection bricks by self-cementation and solidification of coal gangue-based geopolymer.The results show that the 28 d compressive strength of pure coal gangue-based polymer products can reach 14.9 MPa.With uniform density and stable di-mensions,they can be used for the production of slope protection bricks.Considering both the utilization rate of coal gangue and the strength of the samples comprehensively,the optimal alkali content is 10%～15%,the slag powder admixture amount is≤20%,and the alkali activator modulus is 1.0～1.2.By adjusting the alkali content,mineral powder dosing and alkali exciter modulus,specimens with good working performance and 28 d compressive strength greater than 30 MPa can be prepared,so that the gangue base polymer self-cohesive curing gangue aggregate products meet the strength requirements of most road base slope protection bricks.
Keywords：calcined coal ganguegeopolymerizationslag powderslope protection bricks
Publication Date：2025-03-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 87-91 )