Single-component modified geopolymer and application thereof

Abstract

The invention discloses a single-component modified geopolymer and an application thereof. The single-component modified geopolymer is prepared from 50.0 to 60.0 parts of an industrial byproduct silicon-aluminum mineral material, 25.0 to 30.0 parts of construction waste powder, 5.0 to 10.0 parts of cement, 5.0 to 10.0 parts of a solid excitant and 0.2 to 1.0 part of an additive. The prepared single-component modified geopolymer adopts the solid excitant, the solid excitant is a salt substance, and the prepared single-component modified geopolymer is in a solid state, convenient to transport, low in curing speed and long in operable time, and can be directly constructed after water is added and stirred on site, the single-component modified geopolymer is applied to a lime-fly ash gravel cold regeneration treatment process, and a base material obtained through cold regeneration treatment is high in strength and good in stability. According to the lime-fly ash gravel cold regeneration treatment process, lime-fly ash gravel base course milling material field treatment can be achieved, the transferring and stacking cost is reduced, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a single-component modified geopolymer and its application. Background technique [0002] Grouting, also known as grouting, is to prepare certain materials into grout, and use pressure feeding equipment to inject it into the gaps between particles in the formation, the interface or cracks of the soil layer through drilling holes, and spread, gel, and solidify to achieve reinforcement. For the purpose of formation or anti-seepage and plugging, grouting technology is widely used in water conservancy, mining, construction engineering, traffic engineering and other fields. Commonly used grouting materials are: 1) organic polymer grout materials such as epoxy resin, polyurethane, acrylate and other chemical grout materials, which generally have low viscosity and are easy to enter small cracks or pores in the soil, and have strong grout injection ability , but the cost is h...

AI Technical Summary

Problems solved by technology

However, the geopolymer grouting materials in the prior art mainly use two-component geopolymer materials, and the actual application process needs to produce a liquid alkaline activator, which is corrosive and will irritate the skin and corrode the container. In addition, after the two-component geopolymer is mixed, an exothermic reaction occurs, the thickening speed is fast, and the operation time is short. During the application process, the grouting equipment must be cleaned in time, otherwise the grouting equipment will be blocked, which requires high construction operations.

[0004] At the same time, the cold regeneration treatment process of the fly ash crushed stone base milling material is mainly through adding cement, slaked lime and other materials to the fly ash crushed stone base milling material for cold regeneration treatment. Usually, there is a defect of insufficient bearing capacity, and new secondary is needed. Lime soil can meet the requirements of use; on the other hand, for roads that are refurbished due to pavement damage caused by the expansion of fly ash macadam, there may be excessive lime, burnt lime, excessive gypsum and other factors that cause expansion in the milling material of the lime macadam base. Existence, adding cement, slaked lime and other materials on the basis of cold regeneration treatment may lead to the possibility of further expansion, and the purpose of eliminating quality hidden dangers cannot be achieved

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