Inorganic multi-element composite super-high-early grouting material and preparation method thereof

Abstract

The invention relates to an inorganic multi-element composite super-high-early grouting material which is prepared by the following components in parts by weight: 50-65 parts of binding material and 30-46 parts of quartz sand and assistant. The binding material is prepared by the following components in parts by weight: 62-68 parts of sulphoaluminate cement, 18-25 parts of aluminate cement and 8-15 parts of gypsum, and the assistant is prepared by the following components making up the binding material in percentage by weight : 0.02%-0.06% of lithium carbonate, 0.9%-1.4% of sodium sulfate, 0.3-0.6% of borax, 0.05-0.09% of sodium tripolyphosphate, 0.01%-0.03% of sodium gluconate, 0.4%-0.7% of green vitriol, 0.15%-0.2% of antifoaming agent, 0.2%-0.4% of polypropylene fiber and 1.4%-1.8% of naphthalene-based superplasticizer. The inorganic multi-element composite super-high-early grouting material has the characteristics of being high in compression strength, small in fluidity gradual loss, simple in productive process and free of toxin and pollution.

Description

Technical field [0001] The invention relates to a grouting material, in particular to an inorganic multi-element composite environment-friendly super early strength grouting used in the fields of engineering rescue, engineering repair, old building reinforcement, railway support mortar, etc., and can also be used as ordinary grouting material The material, with its superior super early strength performance, may be expected to enter the fields of national defense and nuclear industry. Background technique [0002] With the progress of society and the development of science and technology, environmental protection and energy conservation have become the two major themes of today's world development. However, the toxicity and environmental pollution of chemical grouting materials and the inability of traditional inorganic grouting materials to meet engineering needs have been binding engineers and researchers; railway bearing mortar (ultra-early-strength grouting) has emerged as a n...

AI Technical Summary

Problems solved by technology

The main problem is that the ratio design of the composite system is relatively random without much scientific basis, followed by the difficulty in controlling the coagulation time of the system, and the most fundamental problem is that the hydration mechanism of the composite system has not been studied in depth, and only the interest In terms of macro performance, it leads to the lack of scientific and theoretical guidance for the design of composite systems

However, there are no research reports on the sulfoaluminate cement-aluminate cement-gypsum ternary composite system.

[0004] Although there are many studies on super early strength grouting materials at home and abroad, the initial fluidity of foreign super early strength grouting materials is good, but the hourly compressive strength and flexural strength cannot be well developed, or when the compressive strength is high The flexural strength is low; domestic ultra-early-strength grouting materials are characterized by low hourly strength when the initial fluidity value is large, or when the hourly strength is high, the fluidity loss is large, and the two cannot be well unified

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