Property of self-compacting concrete pavement

In order to improve the performance of self-compacting concrete pavement, the volume percentage of coarse aggregate in self-compacting concrete was increased to 75%, its largest granule diameter was 40 mm, so that the concrete shrinkage was less than 400με; the optimum amount of fly ash and super water reducing agent were added, and the flexural strength formula of sel-compacting pavement concrete was established to make its fluidity, cohesion, flexural strength and impermeability optimum, then, a full-scale slab flexural fatigue test was carried out. Test result shows that the flexural strength test value of self-compacting concrete is 7.0~8.0 MPa, its measure value is 6.5 MPa, and its charge passage is less than 1 000 C in the Cl^- penetrability test; the slump of self-compacting concrete pavement exceeds 160 mm, its fatigue service life increases by 1 time relative to design demand life, and its construction speed increases by 1.5 time. It is obvious that the property of self-compacting concrete pavement is ascendant. 5 tabs, 6 figs, 10 refs.