Multi-source solid waste-based grouting cementing material as well as preparation method and application thereof

Abstract

The invention relates to a multi-source solid waste-based grouting cementing material as well as a preparation method and application thereof. The grouting cementing material is prepared from the following raw materials in parts by weight: 60 to 80 parts of red mud, 60 to 80 parts of other solid wastes, 40 to 60 parts of an excitant and 10 to 20 parts of an additive, wherein the other solid wastescomprise the following raw materials in parts by weight: 15-25 parts of furnace slag, 15-25 parts of mineral slag, 10-20 parts of steel slag and 8-20 parts of desulfurized gypsum. The preparation method is simple; the prepared grouting cementing material is short in setting time, high in early strength, high in stone body mechanical strength, excellent in erosion resistance and suitable for coastal karst broken rock mass reinforcement and treatment engineering, engineering safety construction in coastal areas can be guaranteed, the solid waste stockpiling pressure is relieved, the problem ofenvironmental pollution caused by red mud is solved, high added value is achieved, and comprehensive utilization of the red mud is promoted.

Description

technical field [0001] The invention belongs to the technical fields of solid waste comprehensive utilization, geotechnical engineering disaster control and building material preparation, and specifically relates to a multi-source solid waste-based grouting cementitious material and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The hydrogeology in the coastal karst area is complex, and the formation rock mass has been subjected to tidal action, salt water cycle displacement, mechanical scour stress, and seawater seepage field for a long time, and the chemical and mineral components of the rock formation have been severely eroded an...

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Problems solved by technology

The problem of red mud in solid waste treatment is the most prominent. The large-scale stacking of red mud will cause continuous pollution to soil, water sources, air, etc. However, the utilization rate of red mud is less than 1%, and there is no effective industrialized treatment method.

However, in view of the special geological characteristics of coastal karst, such as strong seawater erosion, tidal water erosion, and alternating salt and fresh water cycles, the defects of cement slurry such as long setting time, low mechanical strength, and poor erosion resistance restrict the efficient reinforcement of coastal karst broken rock mass.

Although the multi-source solid waste-based grouting material has a certain mechanical strength, it generally has the problems of low red mud usage, little usage of other synergistic solid waste, long setting time and poor erosion resistance of grouting cementitious materials. , not suitable for grouting reinforcement treatment of coastal karst broken rock mass

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