Polyethylene fiber-reinforced zeolite-fly ash-based geopolymer with ultra-high molecular weight and preparation method of polyethylene fiber-reinforced zeolite-fly ash-based geopolymer

A technology of polyethylene fiber and ultra-high molecular weight, which is applied in the field of materials science to achieve the effect of low cost and solving environmental pollution

Inactive Publication Date: 2018-09-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the coagulation and hardening mechanism of the geopolymer cementitious system is very different from that of common portland cement, many factor

Method used

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  • Polyethylene fiber-reinforced zeolite-fly ash-based geopolymer with ultra-high molecular weight and preparation method of polyethylene fiber-reinforced zeolite-fly ash-based geopolymer
  • Polyethylene fiber-reinforced zeolite-fly ash-based geopolymer with ultra-high molecular weight and preparation method of polyethylene fiber-reinforced zeolite-fly ash-based geopolymer
  • Polyethylene fiber-reinforced zeolite-fly ash-based geopolymer with ultra-high molecular weight and preparation method of polyethylene fiber-reinforced zeolite-fly ash-based geopolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Low-calcium fly ash: 542 parts, high-calcium fly ash: 136 parts, quartz sand: 203 parts, sodium silicate: 173 parts, sodium hydroxide: 38 parts, water: 160 parts, ultra-high molecular weight polyethylene fiber: 14 parts, zeolite: 0 parts.

[0040] Step 1, take by weighing 542 parts of I-level low-calcium fly ash, 136 parts of I-level high-calcium fly ash, 203 parts of quartz sand, and 0 part of zeolite and join in the stirring pot, and the revolution is 57~67r / min, and the rotation is Stir dry at a speed of 135-145r / min for 3 minutes until the mixture is evenly obtained;

[0041] Step 2, take by weighing 160 parts of water, 38 parts of purity be 99% sodium hydroxide, 173 parts of sodium silicate of 3.3 moulds, mix and stir in the beaker and make alkali activator;

[0042] Step 3, add the alkali activator prepared in step 3 into the stirring pot of step 2, and stir for 5 minutes at a speed of 115-135 r / min in revolution and 275-295 r / min in rotation, so that the alkali ...

Embodiment 2

[0047] Low calcium fly ash: 526 parts, high calcium fly ash: 132 parts, quartz sand: 203 parts, sodium silicate: 173 parts, sodium hydroxide: 38 parts, water: 160 parts, fiber: 14 parts, zeolite: 20 servings.

[0048] Step 1, weigh 526 parts of I-grade low-calcium fly ash, 132 parts of I-grade high-calcium fly ash, 203 parts of quartz sand, and 20 parts of zeolite and add them to the stirring pot. Stir dry at a speed of 135-145r / min for 3 minutes until the mixture is evenly obtained;

[0049] Step 2, take by weighing 160 parts of water, 38 parts of purity be 99% sodium hydroxide, 173 parts of sodium silicate of 3.3 moulds, mix and stir in the beaker and make alkali activator;

[0050] Step 3, add the alkali activator prepared in step 3 into the stirring pot of step 2, and stir for 5 minutes at a speed of 115-135 r / min in revolution and 275-295 r / min in rotation, so that the alkali activator and the mixture One is mixed to obtain mixture two;

[0051]Step 4, add 14 parts of ...

Embodiment 3

[0056] Low calcium fly ash: 509 parts, high calcium fly ash: 128 parts, quartz sand: 203 parts, sodium silicate: 173 parts, sodium hydroxide: 38 parts, water: 160 parts, fiber: 14 parts, zeolite: 41 copies.

[0057] Step 1, weigh 509 parts of I-level low-calcium fly ash, 128 parts of I-level high-calcium fly ash, 203 parts of quartz sand, and 41 parts of zeolite and add them to the stirring pot. Stir dry at a speed of 135-145r / min for 3 minutes until the mixture is evenly obtained;

[0058] Step 2, take by weighing 160 parts of water, 38 parts of purity be 99% sodium hydroxide, 173 parts of sodium silicate of 3.3 moulds, mix and stir in the beaker and make alkali activator;

[0059] Step 3, add the alkali activator prepared in step 3 into the stirring pot of step 2, and stir for 5 minutes at a speed of 115-135 r / min in revolution and 275-295 r / min in rotation, so that the alkali activator and the mixture One is mixed to obtain mixture two;

[0060] Step 4, add 14 parts of u...

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Abstract

The invention relates to a polyethylene fiber-reinforced zeolite-fly ash-based geopolymer with an ultra-high molecular weight and a preparation method of the polyethylene fiber-reinforced zeolite-flyash-based geopolymer. The polyethylene fiber-reinforced zeolite-fly ash-based geopolymer comprises the following raw materials of: in parts by weight, 493-542 parts of low-calcium fly ash, 124-136 parts of high-calcium fly ash, 203 parts of quartz sand, 0-61 parts of zeolite, 160 parts of water, 38 parts of sodium hydroxide, 173 parts of sodium silicate and 5-50 parts of polyethylene fiber with anultra-high molecular weight, and the preparation method comprises the following steps of: adding the low-calcium fly ash, high-calcium fly ash, quartz sand and zeolite to a stirring pot, and performing even stirring to obtain a No.1 mixture; mixing the water, sodium hydroxide and sodium silicate evenly in a beaker to obtain an alkali activator, adding the alkali activator to the stirring pot so as to mix the alkali activator with the No.1 mixture to obtain a No.2 mixture, adding the polyethylene fiber with an ultra-high molecular weight to the No.2 mixture, performing stirring until the fiberis evenly dispersed, putting the obtained slurry into a mould, then performing curing in an oven, and then performing curing at room temperature so as to achieve molding. When the preparation methodis compared with the prior art, the product has the advantages of low cost, good material performance and the like.

Description

technical field [0001] The invention belongs to the field of materials science, in particular to an ultra-high molecular weight polyethylene fiber reinforced zeolite-fly ash base polymer and a preparation method. Background technique [0002] Geopolymer is a new type of inorganic silica-alumina gelling material with zeolite-like structure. It has many excellent properties such as rapid hardening and early strength, high strength, impermeability, frost resistance, corrosion resistance, fire resistance and solid sealing of heavy metals. Compared with traditional cement-based materials, its raw material sources are more extensive, and its preparation is convenient, energy consumption is small, and CO2 emissions are low, so it has been well applied in engineering, especially emergency repair and construction projects. However, due to the inherent weaknesses of low tensile strength and high brittleness of geopolymer materials, cracks in different degrees and in different forms ar...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/006C04B2201/50C04B14/06C04B14/047C04B16/0625Y02P40/10
Inventor 余江滔崔璨
Owner TONGJI UNIV
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