Low-heat asphalt for grouting plugging of large leakage quantity and high flow velocity karst and preparation method thereof
A high flow rate, asphalt technology, applied in the field of grouting plugging materials, can solve the problems of high safety threats to construction equipment and personnel, poor controllability of the grouting process, high temperature sensitivity, etc., to achieve safety protection and good resistance to water flow erosion performance and plugging performance, the effect of low construction temperature
Inactive Publication Date: 2014-01-08
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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AI Technical Summary
Problems solved by technology
[0004] The invention provides a low-heat asphalt and its preparation method for karst grouting plugging with large leakage volume and high flow rate. It is necessary to solve the problem that there is no special grouting material for seepage prevention and plugging in karst or overhead formations with large leakage volume and high flow rate, and Solve the technical problems of high working temperature, high temperature sensitivity, high viscosity of slurry material, poor controllability of grouting process and great threat to construction equipment and personnel safety during hot asphalt grouting plugging construction
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] Embodiment 1, the raw material composition and weight ratio of this kind of low-heat bitumen used for large leakage and high flow rate karst grouting plugging are as follows:
[0038] 100 parts of asphalt;
[0039] 5 parts paraffin;
[0040] 100 parts of water;
[0041] 3 parts of cationic emulsifier;
[0042] 40 parts of cement.
Embodiment 2
[0043] Embodiment 2, this kind of low-heat asphalt used for large leakage and high flow rate karst grouting plugging, its raw material composition and weight ratio are as follows:
[0044] 100 parts of asphalt;
[0045] 3 parts paraffin;
[0046] 100 parts of water;
[0047] 1 part cationic emulsifier;
[0048] 30 parts of cement.
Embodiment 3
[0049] Embodiment 3, the raw material composition and weight ratio of this low-heat asphalt used for large leakage and high flow rate karst grouting plugging are as follows:
[0050] 100 parts of asphalt;
[0051] 4 parts paraffin;
[0052] 120 parts of water;
[0053] 2 parts of cationic emulsifier;
[0054] 60 parts of cement.
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Abstract
A low-heat asphalt for grouting plugging of large leakage quantity and high flow velocity karst and a preparation method thereof. The asphalt comprises the following raw materials, by weight: 100 parts of asphalt, 3-5 parts of water wax, 120 parts of water, 1-3 parts of an emulsifier and 30-80 parts of cement. The low-heat asphalt provided by the invention is an effective grouting material for large leakage quantity and high flow velocity karst or anti-seepage treatment for overhead stratum, and fills up the blank in the current grouting materials. Compared with hot asphalt grouting, under same plugging performance, the low-heat asphalt provided by the invention has low construction temperature, greatly improved construction safety, reliability and controllability, and construction cost reduced by more than 40%. The low-heat asphalt provided by the invention has characteristics of reliable construction effect, high working efficiency and low cost, and can be widely applied to seepage prevention engineering for various underwater constructions, tunnel, bridge pier cofferdam and karst.
Description
technical field [0001] The invention relates to the technical field of foundation treatment of geotechnical engineering, in particular to a grouting plugging material specially used for karst or overhead formations with large leakage volume and high flow velocity, and a preparation method of the material. Background technique [0002] Different grouting materials and processes are required for grouting plugging at different openings and different flow rates. For formation plugging with an opening of less than 50 cm and a flow rate of less than 0.5 m / s, cement thick slurry, mortar, low-grade concrete, cement-water glass, and quick-setting paste can be used for plugging, but for karst with a larger opening and flow rate Currently, there is no targeted and particularly effective grouting material for plugging, and a large amount of material is injected to form a blocking body to prevent the fine grouting material from being washed away by the water flow. These materials inclu...
Claims
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IPC IPC(8): C04B28/00C04B26/26
Inventor 符平张金接赵卫全王春杨锋邢占清
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES