Concrete for anchorage zone of highway bridge expansion device and preparation method thereof

The invention relates to the technical field of cement concrete building materials, especially to concrete for an anchorage zone of a highway bridge expansion device and a preparation method thereof. A formula of the concrete comprises the following components, by mass: 160-170 parts of water, 410-420 parts of cement, 610-620 parts of sand, 1200-1210 parts of stone, 3-4 parts of a water reducer, 11-12 parts of an antifreezing agent, 110-120 parts of steel fibers, and 1-2 parts of PVA fibers. According to the invention, through a large number of experiments, a suitable concrete mix ratio and a reasonable manufacturing process, feeding sequence, stirring time and stirring mode of a test piece are obtained, which can effectively improve the early strength of the concrete and reduce the maintenance cycle of the concrete, thereby achieving the effect of rapid open to traffic. 本发明涉及水泥混凝土建筑材料技术领域，尤其涉及一种公路桥梁伸缩装置锚固区用混凝土及其制备方法。其中，混凝土的配方按照质量份，包括水160-170份，水泥410-420份，砂610-620份，石1200-1210份，减水剂3-4份，防冻剂11-12份，钢纤维110-120份，PVA