Method for preparing unsaturated carboxylate solution modified concrete compound material

Abstract

The invention discloses a method for preparing an unsaturated carboxylate solution modified concrete compound material. The method comprises the following steps of: mixing and stirring 20-60 parts of water and 100-150 parts of a magnesium acrylate solution for 2 minutes; respectively and sequentially adding 0.1-0.15 part of sodium persulfate and 5-12 parts of polypropylene fibers until the materials are uniformly dispersed to prepare a mixed solution A; mixing and stirring 300-400 parts of aggregates, 100 parts of cement, 0-40 parts of pulverized fuel ash, 0-10 parts of silica fume, 5-50 parts of sericite powder and 0-50 parts of white carbon black until the materials are uniformly dispersed, adding half mixed solution A, stirring for 2 minutes, adding the rest half mixed solution A, and stirring until the materials are uniformly dispersed. Compared with the prior art, the material has the advantages of convenience in construction, controllable curing time, good elastoplasticity, short construction time and the like and has a wide application prospect in the fields of expansion joints of highway, roads, bridges and other construction structures.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a method for preparing a concrete composite material modified by an unsaturated carboxylate solution. Background technique [0002] With the development of highways and urban roads in our country, the traffic volume and heavy vehicles have increased, and various types of bridge expansion devices generally have joint material aging and falling off, and rivets and anchors of steel tooth plates are cut or pulled apart. The reasonable selection of bridge expansion joints and the quality of construction and installation are very important to ensure the safety, speed and comfort of road transportation, and directly affect the service life and economy of the road. [0003] TST bridge expansion joint, also called seamless expansion joint adhesive, is a kind of asphalt-filled bridge expansion joint. This mixture of high-elastic special asphalt and stone can absorb the displace...

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Problems solved by technology

[0007] The application of polymer-modified concrete materials as bridge expansion joints has not been published in many public documents, and because there are many types of polymers, their composition and properties are different, and the performance is also quite different. Will increase the cost and may reduce the durability of the concrete

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