无砂混凝土在桥头跳车病害防治技术中的应用

Application of No-fines Concrete to Prevent Bump at the End of Bridge

将易于施工、孔隙率大、强度大、密度小、透水性好的无砂大空隙率混凝土应用于惠州西林河大桥台背回填区.实践表明,此举可克服路桥衔接处由于桥台结构物限制而无法压实及雨水侵入细料流失带来的沉降过大等问题,从而防止了桥头跳车现象的发生.

No-fines large porosity concrete, which was easy to be constructed and with large porosity, high strength, low density, good water permeability, was applied to Xilinhe Bridge. The result show that the use of no-fines concrete can overcome the settlement problems brought by loss of fines and compaction difficult at the embankment-bridge joint structure and then prevent bump at the end of bridge.