DEVICE FOR COMPRESSING ASPHALT MIXES Russian patent published in 2015 - IPC E01C19/30 E01C19/48 

FIELD: construction.

SUBSTANCE: compressing element in the device is designed in the form of single row tamping beam with two equal by length left L₁ and right L₂ portions, constituting the total length of the beam L=L₁+L₂, moving vertically in opposite phases with the vibration frequency of ƒ=540-720 min^-1 for mixes of type A, B and ƒ=420-600 min^-1 for mixes of type C, D, E, beam width is determined from the condition C=(2-3)d_max, where d_max maximum size of mix grain, which permits to increase the moving rate of asphalt-spreader up to 8.0 m/min, its support surface comprises two portions different by width - front C₁=0.55C and rear C₂=0.45C, inclined to the horizontal surface of the compacted layer, respectively, at angles $$\alpha =arctg\frac{h_l\cdot (S{F}_{\mathrm{0,8}}-S{F}_{\mathrm{0,9}})}{\mathrm{0,55}C}\text{ and }\beta =arctg\frac{h_l\cdot (S{F}_{\mathrm{0,9}}-S{F}_{\mathrm{0,98}})}{\mathrm{0,45}C},$$ where h_l ^_ layer thickness, cm; SF_0.8, SF_0.9, SF_0.98 - the respective safety factors for compressing the asphalt-concrete layer, corresponding to k_c=0.80, k_c=0.90 and k_c=0.98.

EFFECT: possibility of increasing the speed of asphalt-spreader.

4 dwg