BOTTOM ASH FROM MUNICIPAL SOLID WASTE INCINERATION AS A SUBGRADE GROUTING MATERIAL

Abstract

Bottom ash from municipal solid waste incineration (MSWI BA), as a product of waste incineration and power generation, is attracting the increasing attention of researchers due to its particular reactivity. In this paper, by studying the performance of MSWI BA itself and the modification of MSWI BA by GBFS, fly ash, steel slag, cement, etc., the feasibility of using MSWI BA as a foundation grout material is elucidated upon. The results show that MSWI BA has some reactivity, but more is needed to meet the sealing material requirements. However, adding cement and GBFS in MSWI BA can meet the grouting requirements of base repairs. It should be noted that when the dosage of cement, MSWIBA, and GBFS is 30 g, 135 g, and 15 g, respectively, the microstructure of the sealing material is the densest.

Keywords

• mswi ba
• subgrade grouting material
• modification
• microstructure