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Organic fiber reinforced inorganic geopolymer composite cementitious material and preparation method thereof

A technology of composite cementitious materials and geopolymers, which is applied in the field of preparation of fiber-reinforced inorganic composite materials, can solve the problem of not finding the patent of polypropylene bundled monofilament fiber-reinforced geopolymers, etc. Development, prevention and formation and development of cracks, the effect of improving flexural strength and compressive strength

Inactive Publication Date: 2012-03-07
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0084] According to the data search done by the applicant, no relevant patents have been found on the use of polypropylene bundled monofilament fibers to reinforce geopolymers

Method used

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  • Organic fiber reinforced inorganic geopolymer composite cementitious material and preparation method thereof
  • Organic fiber reinforced inorganic geopolymer composite cementitious material and preparation method thereof
  • Organic fiber reinforced inorganic geopolymer composite cementitious material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108]Accurately weigh 1500g of phosphorus slag, and use this as the basis of measurement (100%); adopt the external mixing method, the dosage of the activator sodium silicate is 13%, dissolve the sodium silicate in quantitative water, and the water-slag ratio (w / c) =0.29. Zero content polypropylene bundled monofilament fibers (for reference). Pour phosphorus slag into a double-rotation double-speed slurry mixer for stirring and dispersing; add sodium silicate aqueous solution and stir; stir at a high speed to form a uniform slurry, and put the slurry into a 40mm×40mm×160mm iron triple mold . Vibrate on the glue sand vibrating table, and scrape it with a scraper to obtain a formed phosphorus slag-based geopolymer gelling material. The initial setting time of the sample is 33 minutes, and the final setting time is 124 minutes.

[0109] The molded specimens were cured in the standard curing box for 24 hours, and after demoulding, they were cured in the standard curing box for...

Embodiment 2

[0115] Accurately weigh 1500g of phosphorus slag, and use this as the basis of measurement (100%); adopt the external mixing method, and the dosage of the activator sodium silicate is 13%; dissolve the sodium silicate into the quantitative water; dissolve the sodium silicate into the quantitative water , w / c=0.29. The dosage of polypropylene fiber is 0.024%. The polypropylene fiber is pre-dispersed in the phosphorus slag, and then poured into a double-rotation and double-speed pulp mixer for stirring and dispersing; the sodium silicate aqueous solution is added for stirring; high-speed stirring forms a uniformly mixed slurry Body, the slurry is packed into 40mm * 40mm * 160mm iron triple mold. Vibrate on a glue sand vibrating table, and scrape it flat with a scraper to obtain a formed organic fiber-reinforced phosphorus slag-based geopolymer composite gelling material.

[0116] The molded specimens were cured in the standard curing box for 24 hours, and after demoulding, they...

Embodiment 3

[0122] All preparation processes are the same as in Example 2. Only changing the PP fiber content to 0.036%, the experimental results are shown in Table 5 and Table 6.

[0123] Table 5: Compressive strength of PP fiber reinforced phosphorus slag-based geopolymer composite cementitious materials

[0124]

[0125] Table 6: Flexural strength of PP fiber reinforced phosphorus slag-based geopolymer composite cementitious materials

[0126]

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Abstract

The invention discloses an organic fiber reinforced inorganic geopolymer composite cementitious material and a preparation method thereof. Polypropylene beam-like monofilament fiber and sodium silicate are added in phosphorus slag, and the mixture is excited by the sodium silicate to prepare the composite cementitious material; the adding amount of the polypropylene beam-like monofilament fiber is0.024 to 0.06 percent of the weight of the phosphorus slag; and the adding amount of the sodium silicate is 13 percent of the weight of the phosphorus slag. The preparation method comprises the following steps: dispersing the polypropylene beam-like monofilament fiber in the formula ratio in the phosphorus slag at the room temperature; putting the mixture in a double-rotation double-speed purified paste stirrer for stirring; adding a water solution of sodium silicate in the mixture and evenly stirring the mixture to form an evenly mixed paste, wherein the ratio of water to slag is 0.29; and forming the paste, putting the paste in a standard curing box for curing, and testing the compressive strength and the flexural strength of the paste. Compared with the phosphorus slag geopolymer, themaximum flexural strength of the composite cementitious material at 28 day ages is increased by 1.6 MPa, and the maximum compressive strength of the composite cementitious material at 28 day ages is increased by 28.4 MPa.

Description

technical field [0001] The invention belongs to the preparation of fiber-reinforced inorganic composite materials, and in particular relates to an organic fiber-reinforced inorganic geopolymer composite gel material and a preparation method thereof. Background technique [0002] Phosphorus slag is a kind of industrial waste produced in the process of producing yellow phosphorus by electric furnace. Usually, about 8-10 tons of phosphorus slag are produced for every ton of yellow phosphorus produced. Our country discharges about 5-6 million tons of phosphorus slag every year, which is basically not effectively treated. The utilization of waste residue piled up like a mountain not only takes up a lot of land, but also contains a small amount of phosphate ions and fluoride ions which will seep into the ground with rainwater and seriously pollute the environment. Using it as a raw material for the preparation of near-zero-emission inorganic geopolymer cementitious materials is on...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B16/06
CPCC04B28/087
Inventor 张耀君李圣徐德龙王宝强王楠徐国明刘厚存杨东峰王亚超
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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