Abstract:Influences of coarse aggregate gradation on its density of vibration, fine aggregate gradation on compressive strength of solution road romixsoilfix(SRX) stabilized fine aggregate, mass ratio of coarse and fine aggregates and key sieve pore passing ratio on compressive strength of SRX stabilized crushed stone based on vertical vibration compaction method(VVCM) were studied. Skeleton dense gradation of SRX stabilized crushed stone in the principle of maximum mechanical strength was put forward and its road performance was verified. The results show that density of vibration of mixture coarse aggregate reaches maximum when mass ratio of the 19375mm aggregate, 9519mm aggregate, 47595mm aggregate is 48∶30∶22. Compressive strength of SRX stabilized fine aggregates reaches maximum when the decreasing coefficient(I) of fine aggregate gradation is 065. Compressive strength of SRX stabilized crushed stone reaches maximum when mass ratio of coarse and fine aggregates is 65∶35. Compressive strength of SRX stabilized crushed stone reaches maximum when key sieve pore passing ratios of 315, 19, 95, 475, 236, 06, 0075 mm is 950%1000%, 640%710%, 440%520%, 320%400%, 220%290%, 110%180% and 50%110%, respectively. Compared with the standard gradation and cement stabilized gravel gradation, compressive strength and splitting tensile strength of SRX stabilized crushed stone at skeleton dense gradation can be increased by 13% and 19% or more, respectively.
