Research on Engineering Characteristics of Magnesium Phosphate Cement Solidified Copper Contaminated Soil
The purpose of this paper is to explore the effects of fiber content,length and curing age on unconfined compressive strength and Brazilian splitting tensile strength of sisal fiber cemented soil.The fiber content was0～0.8%,the reinforced length was7～19 mm and the curing age were 7,28 and 90 days.The unconfined compressive strength and Brazilian splitting test of fiber reinforced cemented-soil were conducted under these various factors respectively.The results show that the incorporation of sisal fiber improves the unconfined compressive strength and splitting tensile strength of cemented-soil.When the reinforcement length was 11 mm and fiber content was 0.4%,the reinforcement effect is the most significant,and the unconfined compressive strength increases by 30.2%.The tensile strength and tension compression ratio of sisal fiber cemented soil exhibit a linear relationship with fiber content.The addition of sisal fiber can improve the brittleness and toughness of cemented soil.The power function was used to fit the test data,and the prediction model of unconfined compressive strength of sisal fiber cemented soil was obtained under the both effect of curing age and fiber content,which could provide reference for practical engineering.
sisal fiberfiber contentunconfined compressive strengthsplitting tensile strengthprediction model
NETL
NSTL
万方数据
