Joint grouting concrete for bridge expansion joint area and preparation method thereof

Abstract

The invention discloses joint grouting concrete for a bridge expansion joint area. The joint grouting concrete comprises the following components in parts by weight: 1-3 parts of FERRO fibers, 2-4 parts of basalt fibers, 30-60 parts of steel fibers, 400-550 parts of cementing materials, 1000-1150 parts of basalt gravels, 650-800 parts of sand, 140-160 parts of water and 3-6 parts of additives. The invention also discloses a preparation method of the joint grouting concrete for the bridge expansion joint area. The joint grouting concrete for the bridge expansion joint area, which is disclosed by the invention, ensures that the impact energy consumption resistance of concrete is greatly enhanced under the condition that high bending resistance is provided, thereby prolonging the service life of the concrete and ensuring the driving safety.

Description

Technical field

[0001] The present invention belongs to the field of road building materials technology, which involves a bridge telescopic seam seam seam concrete and its preparation methods. Background technique

[0002] In order to meet the deformation requirements of the bridge deck at temperature, concrete contraction, and slow changes, the telescopic joints are usually set on the position of both end, between the beam ends and the bridge, or the hinge position of the bridge.In addition, the expansion joints are required to be parallel and perpendicular to the two directions of the bridge axis, which can be freely expanded and solid and reliable. When the vehicle is driving, it should be smooth, no jump and noise to ensure driving safety.However, the expansion joint belongs to the secondary subsidiary in the bridge structure, and the investment amount is small. In most cases, it is arranged to be rushed to construction before the project is approaching.Soon after the bridge ...