Study on flowability test of aeolian sand-naphthalene water reducer filling materials
To analyze the flow characteristics of wind blown sand naphthalene series water reducing agent filling materials,a cemented filling material was prepared by mixing wind blown sand,fly ash,cement,and naphthalene series water reducing agent as raw materials.The influence of factors(wind blown sand:fly ash(mass ratio)A,cement content B,naphthalene series water reducing agent content C)on the initial setting time,bleeding rate,and diffusion degree of wind blown sand naphthalene series water reducing agent filling materials was studied through range analysis,variance analysis,and multiple regression analysis methods.The results showed that within the horizontal range set in the experiment,the initial setting time of the wind blown sand naphthalene water reducing agent filling material is 16～58 minutes,the bleeding rate is 4%～31%,and the diffusion degree is 64.7～73.7 cm.The three factors affect the initial setting time of the material as A>B>C,the bleeding rate as C>B>A,and the diffusion degree as A>C>B;The mass ratio of wind blown sand to fly ash has the greatest impact on the initial setting and diffusion of the material,while naphthalene based water reducing agents have the greatest impact on the material's water bleeding rate.Established and validated a predictive model for the flowability and strength characteristic parameters of the cemented filling material under the influence of three factors.
万方数据
维普
