Rapid setting early-strength anti-aqueous dispersion grouting material and preparation method thereof
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A technology for water-resistant dispersion and grouting materials, applied in the field of quick-setting early-strength water-resistant dispersion grouting materials and its preparation, can solve problems such as water inrush and mud gushing, and achieve strength without shrinkage, fast strength, and strength growth quick effect
Inactive Publication Date: 2015-05-20
HUBEI BAOKANG TO YICHANG HIGHWAY CONSTR HEADQUARTER
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Problems solved by technology
[0006] The problem to be solved by the present invention is to propose a new type of quick-setting, early-strength, water-resistant and dispersed grouting material for the deficiencies of existing materials, which can effectively solve disasters such as water inrush and mud gushing during tunnel construction. Another purpose of the present invention is to provide a method for preparing the grouting material
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Embodiment 1
[0026]
[0027] The preparation method comprises the following steps:
[0028] 1) Weigh sulfoaluminate cement, fly ash and silica fume according to the above mass, put them in the mixer, mix slowly at room temperature for 1min, weigh hydroxyethyl cellulose and lithium carbonate, and slowly add them into the mixer , stir slowly at room temperature for 1 min;
[0029] 2) Add the weighed polycarboxylate water reducer into the weighed water, and mix evenly to obtain an aqueous solution of the water reducer;
[0030] 3) When in use, add component C into the mixer and stir slowly for 2 minutes to obtain the quick-setting early-strength water-resistant dispersion grouting material.
[0031] Fluidity test method: Use a cross-sectional cone with an upper circle of 70mm, a lower circle of 100mm, and a height of 60mm to test the slurry fluidity. Place the cone on a wet smooth glass plate, fill the cone with the freshly mixed slurry, lift the cone vertically quickly, and measure the ...
Embodiment 2
[0037]
[0038] The preparation method is the same as in Example 1.
[0039] In this embodiment, the grouting material is initially set at room temperature for 8 minutes and finally set for 14 minutes. Its fluidity is 23 cm, and its early strength increases rapidly. The strength at 7 days can reach more than 90% of the strength at 28 days, and it has excellent underwater resistance. Dispersion properties, rapid strength growth, and high final strength.
Embodiment 3
[0041]
[0042] In this example, the grouting material is initially set at room temperature for 10.5 minutes, and finally set for 16.5 minutes. Its fluidity is 22 cm, and its early strength increases rapidly. The strength at 7 days can reach more than 90% of the strength at 28 days, and it has excellent underwater resistance. Dispersion properties, rapid strength growth, and high final strength.
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Abstract
The invention relates to a rapid setting early-strength anti-aqueous dispersion grouting material and a preparation method thereof. The material is prepared from sulphate aluminum cement, fly ash, silica fume, a water reducing agent, an underwater anti-dispersion agent, a rapid setting early strength agent and water, wherein the weight part ratio of the sulphate aluminum cement to the fly ash to the silica fume is 17:2:1; the using amount of the water reducing agent accounts for 0.5-0.6% of the total mass of the sulphate aluminum cement, the fly ash and the silica fume; the using amount of the underwater anti-dispersion agent accounts for 0.3-0.35% of the total mass of the sulphate aluminum cement, the fly ash and the silica fume; the using amount of the rapid setting early strength agent accounts for 0.05-0.2% of the total mass of the sulphate aluminum cement, the fly ash and the silica fume; the using amount of water accounts for 50-55% of the total mass of the sulphate aluminum cement, the fly ash and the silica fume. According to the material and the method, proper flowability and proper initial setting time are ensured, the strength after final setting is rapidly strengthened, the material is strong in early strength and high in durability, and the weakening of later strength is avoided.
Description
technical field [0001] The invention relates to a quick-setting early-strength water-resistant dispersion grouting material and a preparation method thereof. Background technique [0002] Karst is the geological action of water on soluble rocks (such as carbonate rocks), which is mainly chemically dissolved and supplemented by mechanical actions such as erosion, erosion and collapse of flowing water. Karst areas in my country are widely distributed and large in size. Reached 3.444 million square kilometers. With the development of my country's transportation construction, the impact of large-scale karst areas on tunnel construction has gradually become prominent. Based on the practice of a large number of tunnel projects built in karst areas at home and abroad, it has been shown that geological disasters in karst areas are mainly divided into air-water, air-water, etc. Cavities and landslides, among which water inrush is the most harmful. Water inrush also includes different...
Claims
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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
Inventor 陈光新胡国祥孙文成杜韦刘昌国杨力杨冬韵
Owner HUBEI BAOKANG TO YICHANG HIGHWAY CONSTR HEADQUARTER
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