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Solid waste-based geopolymer mortar dry blend

A dry mixing and mortar technology, applied in cement production and other directions, can solve the problems of surrounding sea areas and land pollution, and achieve the effect of increasing added value, good practical application value and high toughness.

Active Publication Date: 2021-07-20
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal circumstances, the soda ash waste residue is also disposed of on the surface, and a large amount of waste residue is deposited to form a "white sea", causing pollution to the surrounding sea area and land

Method used

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  • Solid waste-based geopolymer mortar dry blend

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Preparation of 1# solid waste base polymer mortar dry mix

[0034] Raw material ratio:

[0035] Pozzolanic cementitious material 10%, phosphorus slag powder 20%, sand 50%, vermiculite powder 7%, diatomite 6%, magnesium borate whisker 3%, modified nano titanium oxide 4%; the total amount of raw materials is 0.02% Polyvinyl alcohol and 4% base activator;

[0036] Preparation:

[0037] The first step is to prepare pozzolanic cementitious material

[0038] Mix kaolin, river silt and soda ash waste slag in a mixer at a weight ratio of 2:3:5 and put them into a high-temperature furnace. First, raise the temperature from room temperature at a rate of 10°C to 30°C / min. When the temperature reaches 600°C~700°C, change the heating rate to 25°C~50°C / min and continue to heat up to 750~950°C, keep warm for 0.5~2h and cool to room temperature; finally grind the calcined mixture to Particle size ≤75μm, sealed and stored for later use;

[0039] The second step is to prep...

Embodiment 2

[0045] Example 2 Preparation of 2# solid waste base polymer mortar dry mix

[0046] Raw material ratio:

[0047] 10% pozzolanic cementitious material, 15% phosphorus slag powder, 55% sand, 6% vermiculite powder, 7% diatomaceous earth, 4% magnesium borate whisker, 3% modified nano-titanium oxide; the total amount of raw materials is 0.03% Polyvinyl alcohol and 3% alkali activator;

[0048] Preparation method: with embodiment 1.

Embodiment 3

[0049] Example 3 Preparation of 3# solid waste base polymer mortar dry mix

[0050] Raw material ratio:

[0051] Pozzolanic cementitious material 20%, phosphorus slag powder 10%, sand 45%, vermiculite powder 5%, diatomite 10%, magnesium borate whisker 5%, modified nano-titanium oxide 5%; the total amount of raw materials is 0.03% Polyvinyl alcohol and 2% alkali activator;

[0052] Preparation method: with embodiment 1.

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Abstract

The invention discloses a solid waste-based geopolymer mortar dry blend which is prepared from 10-30% of mountain ash cementing material, 10-20% of phosphorus slag powder, 30-60% of sand, 0-10% of vermiculite powder, 0-10% of diatomite, 0-5% of magnesium borate whisker, 0-5% of modified nano titanium oxide, polyvinyl alcohol accounting for 0.02-0.2% of the total amount of the raw materials, and the alkali activator accounting for 2-6% of the total amount of the raw materials. The solid waste-based geopolymer mortar dry blend developed by taking the phosphorus slag, the soda ash waste residue and other industrial byproducts as main raw materials can simultaneously exert the dual effects of geological polymerization and hydration, the added functional material improves the added value of the product, and the dry blend can replace the traditional cement mortar to be used for road, bridge and culvert and tunnel construction. The material has the advantages of high strength, high toughness, cracking resistance, sound absorption, noise reduction, air purification, energy conservation, emission reduction and the like, is wide in application range, and has good practical application value.

Description

technical field [0001] The invention relates to building construction materials, in particular to a solid waste base polymer mortar dry mix. Background technique [0002] As of 2019, the accumulated stockpile of industrial solid waste in my country has exceeded 60 billion tons, covering an area of ​​more than 2 million hectares. On the other hand, under the pressure of increasingly stringent environmental protection requirements, the shortage of construction materials such as cement and the sharp rise in prices have gradually become prominent, and it is urgent to promote the resource utilization of industrial solid waste. In recent years, the use of industrial solid waste to prepare geopolymer environment-friendly gelling materials has gradually attracted widespread attention. The geopolymer itself is polymerized from silicon-aluminum component inorganic salt monomers, and has a stable spatial network structure, mechanical properties and durability. It has excellent perform...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B7/24C04B12/00C04B111/52C04B111/20
CPCC04B28/006C04B7/243C04B12/005C04B2201/50C04B2111/2061C04B2111/52C04B18/145C04B14/08C04B14/202C04B14/383C04B14/305C04B20/008C04B24/2623C04B12/04C04B22/062C04B14/06Y02P40/10
Inventor 王笑风杨博赵亚婷刘建飞万晨光张晓果常迅夫施全敏王晔晔阮成瑞冯明林张轩睿田延锋毛海臻郭霄王晓阳
Owner HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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