Mix design of chopped basalt fiber plastering mortar based on response surface method
For which has the best mechanical properties could satisfy the requirement of consistency and chopped basalt fibre plaster mortar optimal mixture ratio,water-cement ratio,sand cement ratio,dosage of fly ash as the independent variable,with the consistency of mortar,tensile strength,compressive strength,flexural strength in response to a target,the response surface method is used to design the Box-Behnke test,and establish regression model.The multi-objective comprehensive optimization of consistency between 70 mm and 110 mm was achieved,and the proposed mixture ratio was verified by experiments.The results show that the water-binder ratio has a significant effect on the consistency and strength of chopped basalt fiber mortar.The optimal mixing ratio is as follows,water binder ratio 0.35,sand binder ratio 2.0,fly ash content 20％,its consistency,tensile strength,compressive strength and flexural strength are 97 mm,1.99 MPa,38.50 MPa and 9.59 MPa,respectively.For consistency and tensile strength,the regression model of the predicted values and measured error less than 4％,the flexural strength and compressive strength of the error of the predicted and the measured values are 12％and 28％respectively,and the basalt fiber concrete compressive strength of the characteristics of large discreteness,the response surface method is verified with chopped basalt fibre plaster mortar mix the feasibility of optimization design.
response surface methodology(RSM)chopped basalt fiber plastering mortarmix ratio optimizationconsistencystrength
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