Resin filling materials for repairing steel bridge deck pavement and method for preparing the same

Abstract

The invention provides a resin filling material for repairing steel bridge deck pavement and method for preparing the same, the material is composed of two following components in weight ratio: adhesive component:curing component= 1:0.3-1; wherein, the adhesive component is prepared by following raw materials in weight parts proportion: bisphenol A epoxy resin 1-100 parts, alicyclic epoxy resin mixture 1-100 parts, toughening, softing components bifunctional epoxy resin 1-50 parts, softing components trifunctional epoxy resin 1-50 parts; the curing component is prepared by following raw materials in weight parts proportion: polyether amine curing agent 20-50 parts, alicyclic amine curing agent 2-50 parts, aromatic amine curing agent 2-50 parts, long-chain aliphatic amine curing agent 1-50 parts, polyamide curing agent 1-50 parts, organic amine curing accelerator 1-4 parts. The invention provided resin filling materials for repairing steel bridge deck pavement has characteristics of good flexibility, high adhesive strength, good water resistance and good temperature resistance, which meets the service requirments in filling repair of steel bridge deck pavement.

Description

technical field [0001] The invention relates to a resin joint filling material used for paving and repairing steel bridge decks and a preparation method thereof, belonging to the technical field of road building materials. Background technique [0002] Cracks are one of the main factors affecting the service life of steel bridge deck pavement. The crack disease of steel bridge deck pavement is different from that of ordinary asphalt concrete pavement. It is mainly characterized by the appearance of top-down cracks earlier. After cracks appear on the pavement surface, stress concentration will occur at the tip of the crack and the surrounding area, resulting in rapid crack expansion. . As the protective layer of the steel bridge deck, once the rainwater enters the interior of the pavement along the cracks, it is very easy to cause corrosion of the steel bridge deck. Therefore, it should be repaired in time after cracks appear in the pavement. [0003] Most road joint fillin...

AI Technical Summary

Problems solved by technology

[0003] Most road joint filling materials are asphalt mixtures with poor performance. Traditional asphalt or modified asphalt joint filling materials have the following disadvantages: (1) joint filling materials need to be heated for construction, which consumes a lot of energy, and are difficult to fill due to their high viscosity. (2) The bonding force between the joint filler and the asphalt concrete is poor, and it is easy to disengage; (3) The joint filler has poor temperature resistance stability, which makes it easy to soften and be extruded at high temperature in summer, and easy to embrittle at low temperature in winter Cracking, short service life, frequent repairs, resulting in a lot of waste of manpower and material resources

However, epoxy resin is brittle, and it needs to be modified to increase its toughness to meet the special requirements for the repair of steel bridge deck joints. Other properties such as high fluidity and room temperature curing also need to be possessed.