Filling material suitable for waste underground civil air defence hole treatment and preparation method thereof

A technology of filling material and underground man, which is applied in the field of underground engineering, can solve the problems of not paying attention to the filling rate and durability of filling materials, and not fully targeting, so as to achieve the effect of improving filling effect, improving activity and improving durability

Inactive Publication Date: 2018-06-22
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned disclosed patents do not fully address the characteristics of underground air defense tunnels, and do not pay attention to the filling rate and durability of filling materials

Method used

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  • Filling material suitable for waste underground civil air defence hole treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The filling material and its weight fractions for the treatment of abandoned underground man-made air defense tunnels provided in this embodiment are: 40 parts of cement, 35 parts of solid waste, 0.6 part of water-repellent agent, 0.1 part of plasticizer, 21.5 parts of water, foaming agent 0.05 parts.

[0024] Above-mentioned cement is P.O 42.5 ordinary portland cement;

[0025] The above-mentioned solid waste is the result of sintering desulfurization ash discharged from the iron and steel industry after being ground by a ball mill, and the passing rate of 200 mesh is greater than 95%;

[0026] Above-mentioned living hydrophobic agent is commercially available calcium stearate, is white powder;

[0027] The above plasticizer is a polycarboxylate water reducer with a solid content of 40% and a water reducing rate greater than 25%;

[0028] Above-mentioned foaming agent is commercially available composite foaming agent.

[0029] The preparation method of the waste und...

Embodiment 2

[0034] Same as above-mentioned Example 1, the difference is that the filling material and its weight fraction are: 60 parts of cement, 15 parts of solid waste, 1.5 parts of water-repellent agent, 0.2 part of plasticizer, 26.5 parts of water, and 0.2 part of foaming agent. Among them, the solid waste is obtained after the undisturbed stone powder discharged from the machine-made sand and gravel industry is ground by a ball mill, and the pass rate of 200 mesh is greater than 95%.

[0035] The composition of the foaming solution in step (2) of the preparation method is as follows: 1.5 parts by weight of water and 0.2 parts of foaming agent are uniformly mixed to form a foaming solution.

Embodiment 3

[0037] Same as the above-mentioned Example 1, the difference is that the filling materials and their weight fractions are: 50 parts of cement, 30 parts of solid waste, 2 parts of water-repellent agent, 0.3 part of plasticizer, 36.5 parts of water, and 0.5 part of foaming agent. Among them, solid waste is the result of sintering desulfurization ash discharged from the iron and steel industry and tuff undisturbed stone powder discharged from the machine-made sand and gravel industry in a ratio of 1:1 by weight and then ground by a ball mill. The passing rate of 200 mesh is greater than 95%;

[0038] The composition of the foaming solution in step (2) of the preparation method is as follows: 1.5 parts by weight of water and 0.3 parts of foaming agent are uniformly mixed to form a foaming solution.

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Abstract

The invention discloses a filling material suitable for waste underground civil air defence hole treatment and a preparation method thereof. The filling material is characterized by being prepared from, by weight, 40-60 parts of cement, 15-35 parts of solid waste, 0.5-2 parts of water repellent, 0.1-0.3 part of plasticizer, 21.5-36.5 parts of water and 0.05-0.5 part of foamer. The invention further discloses the preparation method of the filling material. The method includes the steps of preparation and transportation of a cement-based slurry commercial concrete stirring station, preparation of engineering field foam and field mixing of cement-based slurry and the foam. The filling material has the advantages that the strength of a filling body is improved, the filling effect is improved,the interference in surrounding buildings is effectively controlled, pollution to the construction environment is relieved, the solid waste is utilized to the maximum degree, the filling cost is reduced, and very high application and popularization value is achieved.

Description

technical field [0001] The invention belongs to the technical field of underground engineering, and in particular relates to a filling material suitable for treating abandoned underground air defense tunnels and a preparation method thereof. Background technique [0002] In the sand and gravel industry and the steel industry, a large amount of solid waste—stone powder discharged from machine-made sand and stone production and sintered desulfurization ash discharged from coal-fired boilers are mostly stored in the open air, which not only occupies the site, but also pollutes the environment . The treatment and utilization of these solid wastes is a practical problem that must be solved at present. [0003] In the late 1960s and early 1970s, in response to the call of "digging deep holes, accumulating grain widely, and preparing for war and famine", a mass movement to build air-raid shelters was launched in cities and towns in our country. The construction of these undergrou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/00663C04B2111/2015C04B2201/20C04B2201/50C04B18/142C04B24/085C04B24/24C04B2103/0068C04B18/12
Inventor 温小栋冯蕾张振亚王赛赛马永政
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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