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Reinforced fly ash base polymer and method of making same

A polymer and fly ash technology, applied in cement production, etc., can solve problems such as porosity decline, and achieve the effects of improved compressive strength, high strength and low cost

Active Publication Date: 2021-10-22
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the special structure P205 and superabsorbent resin contained in phosphorus slag can inhibit the early hydration of cement and other cementitious materials, making the hydration products and polycondensation products more closely combined, so the system structure of the cementitious material system is more compact after hardening, thus Decreases overall internal porosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this example, 40 parts of fly ash weighed, 27 parts of slag, 7 parts of phosphorus slag, and 3 parts of ordinary portland cement were poured into the mixer and stirred for 90 seconds to obtain mixture particles, and then the mixture particles, 5 parts of solid Sodium hydroxide and 0.02 parts of co-solvent are added to the muffle furnace (the set temperature is 1200 ° C) for calcination for 3 hours, cooled and then sieved to obtain geopolymer colloid powder, which is mixed with 1 part of super absorbent resin After obtaining the mixture, add 8 parts of water glass solution and 8 parts of water, stir slowly for 90 s, and stir rapidly for 120 s, then pour, vibrate and shape, and maintain for 28 days under standard curing conditions to obtain the reinforced fly ash geopolymer.

[0031] The 7-day compressive strength of the strengthened fly ash polymer obtained in this example reached 51.6 MPa, and the 28-day compressive strength reached 63.2 MPa, which was nearly 900 time...

Embodiment 2

[0033] In this example, 38 parts of fly ash weighed, 28 parts of slag, 8 parts of phosphorus slag, and 3 parts of ordinary portland cement were poured into the mixer and stirred for 90 seconds to obtain mixture particles, and then the mixture particles and solid hydroxide were oxidized Sodium and co-solvent are added to the muffle furnace (the set temperature is 1200°C) and calcined for 3 hours, then cooled and sieved to obtain geopolymer colloidal powder, which is mixed with 2 parts of super absorbent resin to obtain a mixture. Then add water glass solution and water, stir slowly for 90s, and stir rapidly for 120s, then pour, vibrate and shape, and cure for 28 days under standard curing conditions to obtain the reinforced fly ash geopolymer.

[0034] The 7-day compressive strength of the strengthened fly ash polymer obtained in this example reached 48.3 MPa, and the 28-day compressive strength reached 63.2 MPa, which was nearly 860 times higher than that of the fly ash polymer...

Embodiment 3

[0036] In this example, 40 parts of fly ash weighed, 27 parts of slag, 6 parts of phosphorus slag, and 4 parts of ordinary Portland cement were poured into the mixer and stirred for 90 seconds to obtain mixture particles, and then the mixture particles and solid hydroxide were oxidized Sodium and co-solvent are added to the muffle furnace (the set temperature is 1300°C) and calcined for 3 hours, cooled and sieved to obtain geopolymer colloidal powder, which is mixed with 2 parts of super absorbent resin to obtain a mixture. Then add water glass solution and water, stir slowly for 90s, and stir rapidly for 120s, then pour, vibrate and shape, and cure for 28 days under standard curing conditions to obtain the reinforced fly ash geopolymer.

[0037] The 7-day compressive strength of the strengthened fly ash geopolymer obtained in this example reaches 50 MPa, and the 28-day compressive strength reaches 65 MPa, which is nearly 900 times higher than that of the fly ash geopolymer, an...

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Abstract

The invention discloses a reinforced fly ash base polymer and a preparation method thereof. The polymer of the present invention is composed of fly ash, slag, phosphorus slag, solid alkali activator, quartz sand, Portland cement, water and admixture, etc., and the geopolymer has good construction performance and has good strength development , good shrinkage performance, no cracking, good water retention performance and so on. The invention can make full use of fly ash and phosphorus slag, not only improve the utilization value of solid waste, save the area occupied by solid waste, save the environment, but also reduce the production cost of geopolymer, and has good social and economic effects.

Description

technical field [0001] The invention relates to the technical field of geopolymer-based materials, in particular to a reinforced fly ash-based polymer and a preparation method thereof. Background technique [0002] Geopolymer is an amorphous three-dimensional network structure synthesized by silicon-oxygen tetrahedron and aluminum-oxygen tetrahedron by reacting aluminosilicate material with silicate solution or high-solubility alkali metal hydroxide. The alkali-aluminosilicate gelling material belongs to inorganic polymers. The raw materials of synthetic geopolymers come from industrial waste such as fly ash and slag. Compared with traditional inorganic silicate gelling materials, it can save energy and reduce CO 2 Advantages of emissions. Geopolymers have many excellent properties, including low shrinkage, slow or fast setting, fire resistance, low thermal conductivity, and acid and alkali corrosion resistance, etc. In addition, the geopolymer can completely avoid the al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26
CPCC04B28/26C04B2201/50C04B2201/52C04B22/00C04B18/141C04B18/10C04B22/062C04B24/24C04B24/38C04B2103/0068Y02P40/10
Inventor 李杉李发平卢亦焱杨哲铭闫东明蔡新华郑傲寒
Owner WUHAN UNIV
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