Properties of stabilizing sludge soft soil by fluorogypsum-based cementitious binder
HUANG Xuquan
HUANG Anyi
WANG Xiaoshu
JIANG Mingming
NIE Dandan
FENG Siyuan
Abstract：Fluorogypsum-based cementitious binder(FB),quick lime(LM) and cement(PC) were used to stabilize sludge soft soil. The comparative analysis was carried out on the effects of pH,unconfined compressive strength and water content of stabiliz-ing sludge soft soil at different curing age. With increasing of curing time,the water content of stabilizing sludge soft soil by FB, LM and PC decreased. The relationship between water content and curing time is power function. However,the decrement of water content of stabilizing sludge soft soil by FB mo re obvious. It shows that for the same curing age,the unconfined compressive strength of stabilizing sludge soft soil by FB was much higher than LM and PC,but leaching liquid pH value of stabilizing sludge soft soil by FB was the lowest one of three kinds of stabilizers agents and it had relatively small impact on environment. SEM anal-yses of stabilizing sludge soft soil showed that the original sludge particles were massive,and the microstructure of stabilizing sludge soft soil by FB had the most fine sludge particles,and the bulk sludge particles were less and the structure was more stable.
Keywords：fluorogypsumsoft soilstabilizingunconfined compressive strengthwater content
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 74-78 )