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Alkali-activated cementing material prepared from waste glass fiber reinforced plastics

A technology for waste glass fiber reinforced plastic and cementitious materials, applied in the field of alkali-activated cementitious materials, can solve the problems of waste of resources, technical difficulty, secondary environmental pollution, etc., and achieve the effects of reducing CO2 emissions, broad application prospects, and good mechanical properties.

Inactive Publication Date: 2017-08-18
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical landfill method is to bury waste FRP on the spot. Although this method is simple and feasible, it will occupy a large amount of land and cause groundwater pollution and waste of resources.
The energy recovery method is to use high-temperature calcination to realize the treatment and utilization of waste FRP. This method can convert the organic matter in the waste FRP into usable heat or other energy, but this method will generate a large amount of ash and release toxic gases. cause secondary pollution to the environment
The chemical recycling method mainly uses decomposition and modification to convert waste FRP into recyclable materials, but this method requires high equipment requirements, technical difficulties, and high costs, making it difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An alkali-activated gelling material prepared from waste FRP is prepared from the following raw materials in parts by weight: 70 parts of waste FRP, 2 parts of steel slag, 10 parts of zeolite, 11 parts of lime and 7 parts of sodium hydroxide.

[0017] The waste FRP is phenolic resin FRP, with a fineness (remainder of 325 mesh sieve) of 10% and a specific surface area of ​​850 m2 / kg.

[0018] The steel slag is hot stuffy steel slag with a fineness (200 mesh sieve residue) of 1.5%.

[0019] The zeolite is a natural high-silica zeolite with a fineness (325 mesh sieve residue) of 10% and a SiO2 content of 80%.

[0020] The lime fineness (remainder of 200 mesh sieve) is 15%, and the CaCO3 content is 0.6%.

[0021] The sodium hydroxide is industrial solid sodium hydroxide, the fineness (325 mesh sieve residue) is 5%, the total alkali content is 99.0%, calculated as NaOH; the Na2CO3 content is 0.5%.

[0022] The alkali-activated gelling material can be obtained by uniformly ...

Embodiment 2

[0024] An alkali-activated gelling material prepared from waste FRP is prepared from the following raw materials in parts by weight: 64 parts of waste FRP, 5 parts of steel slag, 15 parts of zeolite, 10 parts of lime and 6 parts of sodium hydroxide.

[0025] The waste FRP is phenolic resin FRP with a fineness (remainder of 325 mesh sieve) of 7% and a specific surface area of ​​920 m2 / kg.

[0026] The steel slag is hot stuffy steel slag with a fineness (remainder of 200 mesh sieve) of 3%.

[0027] The zeolite is a natural high silica zeolite with a fineness (325 mesh sieve residue) of 6% and a SiO2 content of 70%.

[0028] The lime fineness (200 mesh sieve residue) is 5-15%, and the CaCO3 content is 0.3%.

[0029] The sodium hydroxide is industrial solid sodium hydroxide, the fineness (remainder of 325 mesh sieve) is 4%, the total alkali content is 99.2%, calculated as NaOH; Na2CO3 content is 0.3%.

[0030] The alkali-activated gelling material can be obtained by uniformly mi...

Embodiment 3

[0032] An alkali-activated gelling material prepared from waste FRP is prepared from the following raw materials in parts by weight: 55 parts of waste FRP, 4 parts of steel slag, 25 parts of zeolite, 12 parts of lime and 4 parts of sodium hydroxide.

[0033] The waste FRP is phenolic resin FRP with a fineness (325 mesh sieve) of 4% and a specific surface area of ​​1000 m2 / kg.

[0034] The steel slag mentioned is hot stuffy steel slag with a fineness (200 mesh sieve residue) of 6%.

[0035] The zeolite is a natural high silica zeolite with a fineness (325 mesh sieve residue) of 5% and a SiO2 content of 65%.

[0036] The lime fineness (remainder of 200 mesh sieve) is 5%, and the CaCO3 content is 0.2%.

[0037] The sodium hydroxide is solid sodium hydroxide for industrial use, the fineness (remainder of 325 mesh sieve) is 2%, the total alkali content is 99.5%, calculated as NaOH; the Na2CO3 content is 0.1%.

[0038] The alkali-activated gelling material can be obtained by unifo...

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Abstract

The invention discloses an alkali-activated cementing material prepared from waste glass fiber reinforced plastics. The alkali-activated cementing material is made of raw materials including, by weight, 55-70 parts of waste glass fiber reinforced plastics, 2-5 parts of steel slag, 10-25 parts of zeolite, 5-12 parts of lime and 3-7 parts of sodium hydroxide. The alkali-activated cementing material has the advantages that the alkali-activated cementing material is excellent in mechanical property, the 1-day compressive strength of the alkali-activated cementing material under the optimal ratio conditions is higher than 45 MPa, and the 3-day compressive strength of the alkali-activated cementing material under the optimal ratio conditions is higher than 60 MPa.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to an alkali-activated gelling material prepared from waste glass fiber reinforced plastics. Background technique [0002] With the rapid development of the FRP industry, the output of waste FRP in my country is gradually increasing. At present, there are three main methods of processing waste FRP in my country: physical landfill, energy recovery and chemical recovery. The physical landfill method is to bury waste FRP on the spot. Although this method is simple and feasible, it will occupy a large amount of land and cause groundwater pollution and waste of resources. The energy recovery method is to use high-temperature calcination to realize the treatment and utilization of waste FRP. This method can convert the organic matter in the waste FRP into usable heat energy or other energy, but this method will produce a large amount of ash and release toxic gases. Cause secondary poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24
CPCC04B7/243C04B12/005Y02P40/10
Inventor 李来波张海明芦令超
Owner UNIV OF JINAN
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