Reactive grouting reinforcement material with low smoke toxicity and high mechanical strength and preparation method thereof

Abstract

The invention relates to a reactive grouting reinforcement material with low smoke toxicity and high mechanical strength and a preparation method of the reactive grouting reinforcement material, and belongs to the field of mining polymer grouting reinforcement materials. The reactive grouting reinforcement material is prepared from a component A and a component B according to a ratio of 1: 1, wherein the volume ratio of the components is 1. The coating comprises the following components: a silicate aqueous solution, a reaction stabilizer, a reaction promoter, polyisocyanate, a coalescing agentand a reinforcing agent, the obtained reactive grouting reinforcement material has the characteristics of low smoke toxicity and high mechanical strength, the smoke toxicity grade of the material canreach the quasi-safety grade, the compressive strength can reach 60 Mpa, the flame retardant property can realize self-extinguishing 1s away from fire, the safety performance is high, and the stability is good; meanwhile, the characteristics of low viscosity, strong infiltration capacity and large diffusion radius are also realized; in addition, the preparation method of the material is simple and easy to operate, and the preparation cost of the reinforcing material can be further reduced.

Description

technical field [0001] The invention belongs to the field of grouting reinforcement materials, in particular to a reactive grouting reinforcement material with low smoke toxicity and high mechanical strength and a preparation method thereof. Background technique [0002] Reactive grouting reinforcement material is a type of grouting material that needs to undergo a chemical reaction during the construction process to achieve the effects of bonding, strengthening, enriching, and stabilizing. According to statistics, there are mainly three types of reactive grouting reinforcement materials used on site: water glass-cement grouting reinforcement materials, polyurethane grouting materials and silicate modified polyurethane grouting materials. But find that above-mentioned three kinds of materials all have corresponding deficiencies in the actual use process, specifically as follows: (1) water glass-cement slurry grouting reinforcement material needs on-the-spot preparation cemen...

AI Technical Summary

Problems solved by technology

But find that above-mentioned three kinds of materials all have corresponding deficiencies in the actual use process, specifically as follows: (1) water glass-cement slurry grouting reinforcement material needs on-the-spot preparation cement slurry during construction, thus causes construction site Dust and the prepared materials have poor permeability and toughness; (2) The polyurethane grouting material has excellent mechanical properties, but it will foam when encountering water during construction, the heat release temperature is high, and the construction is still difficult. It will release irritating gas. In addition, polyurethane grouting materials generally contain halogen-based flame retardants. Once the heat storage of large-volume grouting materials causes high-temperature smoke or fire, the halogen-containing flame retardants will generate harmful gases after burning. Hydrogen, which makes the rescue devices worn by workers invalid, causing casualties

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