Optimization of the dosage of chopped basalt fibers in asphalt pavement surface course materials for semi-rigid base with functional requirements.

3.3.2 Analysis of variance From the F distribution table, it was determined that F 1-0.05 (2, 2) = 19.00; F 1-0.01 (2, 2) = 99.00; F 1-0.1 (2, 2) = 9.00, and the road surface deflection was a characteristic of the road surface The indicators of overall stiffness and strength are shown in Table 19 , F B = 24.00>F 1-0.05 (2,2) = 19.0, F A = 10.00>F 1-0.1 (2,2) = 9.00, F C <F 1-0.1 (2, 2) = 9.00,factor B (basalt fiber reinforced the dense gradation asphalt concrete AC-20,BFAC-20) was significant, factor A (basalt fiber reinforced the gap-graded asphalt concrete SMA-16,BFSMA-16) was slightly significant, and factor C (basalt fiber reinforced asphalt-treated permeable base ATB-25,BFATB-25) had no effect on the test results; under the maximum shear stress index, In Table 19 , F C = 323.51>F 1-0.01 (2,2) = 99.00, F B = 127.61>F 1-0.01 (2,2) = 99.00, and F A <F 1-0.1 (2,2) = 9.00, Factor C (BFATB-25) was highly significant, factor B (BFAC-20) was slightly significant, and factor A (BFSMA-16) had no effect on the test results.

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