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Method for preparing impermeable cement slurry for garbage landfill bases

An anti-seepage water and base technology, which is applied in the field of preparation of anti-seepage cement slurry for landfill bases, can solve the problems of densification of difficult cement particles, reduced surface activity of blast furnace water slag particles, and many pores, etc. Effects of pollutants, improving compatibility, improving compactness and stone rate

Active Publication Date: 2018-08-17
黑龙江省宾州水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water quenching process reduces the surface activity of blast furnace slag particles, and it is difficult to densify with cement particles after being added as a raw material, with more pores. It is generally not used in cement products with high anti-seepage requirements and stone formation rate requirements.

Method used

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  • Method for preparing impermeable cement slurry for garbage landfill bases
  • Method for preparing impermeable cement slurry for garbage landfill bases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] According to the metering ratio, add 8 parts of 1mol / L sodium phosphate solution to 120 parts of blast furnace slag obtained by water quenching for grinding and stirring; then add 4 parts of dodecyltrimethylammonium bromide and 6 parts of hydroxyl silicone oil (Viscosity 400cps) Continue to mix and stir; finally add 5 parts of polyacrylamide to it and mix thoroughly to obtain modified blast furnace slag for later use.

[0045] The bentonite was calcined at 350° C. for 2 h, cooled naturally, and then crushed and ground to obtain modified bentonite for future use.

[0046] According to the metering ratio, 50 parts of modified bentonite, 6 parts of silicone defoamer, and 5 parts of polycarboxylate water reducer were mixed and stirred to obtain the first premix; 10 parts of oleoyl monoethanolamine, 80 parts of modified blast furnace slag , 100 parts of ordinary Portland cement, 30 parts of gypsum, and 180 parts of water were mechanically stirred, and then the first premix w...

Embodiment 2

[0048] According to the metering ratio, add 12 parts of 1.5mol / L sodium dihydrogen phosphate solution to 150 parts of blast furnace slag obtained through water quenching and grind and stir; then add 6.5 parts of tetrabutylammonium bromide and 5 parts of hydroxyl silicone oil ( Viscosity 2000cps) and continue to mix and stir; finally add 11 parts of polyacrylamide to it and fully mix and stir to obtain modified blast furnace slag for future use.

[0049] The bentonite was calcined at 290° C. for 3.5 hours, and after natural cooling, it was pulverized and ground to obtain modified bentonite for future use.

[0050] According to the metering ratio, 44 ​​parts of modified bentonite, 8 parts of silicone defoamer, and 5 parts of polycarboxylate water reducer were mixed and stirred to obtain the first premix; 22 parts of oleoyl monoethanolamine, 95 parts of modified blast furnace slag , 85 parts of ordinary Portland cement, 15 parts of gypsum, and 210 parts of water were mechanically...

Embodiment 3

[0052] According to the metering ratio, add 7 parts of 1mol / L dipotassium hydrogen phosphate solution to 125 parts of blast furnace slag obtained by water quenching for grinding and stirring; then add 4 parts of cetyltrimethylammonium bromide and 3 parts of Hydroxyl silicone oil (viscosity 200cps) was continuously mixed and stirred; finally, 10 parts of polyacrylamide was added therein and fully mixed and stirred to obtain modified blast furnace slag for future use.

[0053] The bentonite was calcined at 380° C. for 2 h, cooled naturally, and then crushed and ground to obtain modified bentonite for future use.

[0054] According to the metering ratio, 50 parts of modified bentonite, 8 parts of silicone defoamer, and 9 parts of polycarboxylate water reducer were mixed and stirred to obtain the first premix; 18 parts of oleoyl monoethanolamine, 90 parts of modified blast furnace slag , 80 parts of ordinary Portland cement, 25 parts of gypsum, and 165 parts of water were mechanic...

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Abstract

The invention provides a method for preparing impermeable cement slurry for garbage landfill bases. The method includes carrying out modification treatment on blast furnace slag and bentonite to obtain modified blast furnace slag and modified bentonite; mixing and stirring the modified bentonite, defoaming agents and water reducing agents with one another to obtain first premixes; mechanically stirring oleic monoethanolamide, the modified blast furnace slag, ordinary silicate cement, gypsum and water, then adding the first premixes into the oleic monoethanolamide, the modified blast furnace slag, the ordinary silicate cement, the gypsum and the water and continuing to sufficiently stir the first premixes, the oleic monoethanolamide, the modified blast furnace slag, the ordinary silicate cement, the gypsum and the water to obtain the impermeable cement slurry. The method has the advantages that the impermeable cement slurry prepared by the aid of the method is high in concretion rate, and permeation of garbage leachate can be effectively stopped by the impermeable cement slurry.

Description

technical field [0001] The invention belongs to the technical field of cement preparation, and in particular relates to a method for preparing anti-seepage cement slurry for landfill bases. Background technique [0002] Garbage landfill refers to the use of potholes to bury urban garbage. It can not only dispose of waste, but also cover soil and make land. It is the most traditional method of urban garbage disposal. Some of the landfilled garbage has not been harmlessly treated, or due to the complex composition, although the treatment is not effective, a large number of bacteria, viruses, heavy metals and other pollutants will remain. These pollutants are easily discharged with the landfill leachate, polluting nearby land and groundwater. [0003] One of the main structures to prevent the leakage of landfill leachate is the wall of the landfill base, which is generally made of cement slurry. After the general cement slurry is cast, the calculus rate is low and the interna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/06C04B20/02C04B111/27
CPCC04B20/026C04B20/06C04B28/04C04B2111/27C04B2201/50C04B14/104C04B24/42C04B2103/302C04B24/122C04B18/141C04B22/143C04B22/002C04B20/023
Inventor 徐涛王慧陈信宇徐晨皓
Owner 黑龙江省宾州水泥有限公司
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