In order to evaluate the influence of different grouting materials on the performance of basalt fiber(BFRP) bolt and determine the best grouting type,four kinds of grouting materials were selected to test the shear properties of grouting body under the same uniaxial compressive strength.At the same time,the bonding performance of BFRP bolt-grouting body was tested by pull-out test,and the adaptability of different grouting materials to BFRP bolt was ana-lyzed.The test results show that the cohesion of ordinary Portland cement,reinforced cement and superfine cement is above 2 MPa,and the cohesion of alkali activator cement is only 1.27 MPa,but the internal friction angle of alkali ac-tivator cement can reach 34.91°,which is significantly higher than other cement.In terms of bond strength,reinforced cement,alkali activator cement,ultrafine cement,and ordinary Portland cement decreased in turn,and reinforced ce-ment was significantly better than other cements in terms of bond strength and stability.Comprehensive analysis shows that the reinforced cement has more advantages than other cements,which is helpful to improve the overall performance of basalt fiber anchorage.
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万方数据