In order to promote the recycling and harmless disposal of shield tunneling muck,the microscopic and basic physical properties of shield mud cakes were analyzed,the programme wich that they can be used as substitutes for bentonite,fly ash and fine sand in grouting materials was determined.The compressive strength,setting time,bleeding rate,and fluidity of grouting slurries with different substitution rates of shield mud cakes were analyzed.The research results indicate that when mud cakes are used as a substitute for bentonite,the bleeding rate improves,while fluidity and setting time remain relatively stable.The optimal ratio of cement,fly ash,fine sand,water,bentonite and mudfor synchronous grouting materials is 1∶2.71∶2.61∶3.42∶0.49∶0.16.
维普
万方数据