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Geopolymer construction material

A technology of building materials and geopolymers, applied in the direction of cement production, etc., can solve the problem of low compressive strength, achieve fast curing, high strength, and meet the strength requirements

Inactive Publication Date: 2017-11-21
CHENGDU NASHUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of low compressive strength of existing materials, a technical solution adopted by the present invention is to provide a geopolymer building material, which is characterized in that its composition includes: straw, kaolin, bentonite, silicon micropowder, silicon Sodium Hydroxide, Potassium Hydroxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Put 20 parts of kaolin in a muffle furnace and calcined at 850°C for 1.8h to form metakaolin. 7 parts of potassium hydroxide and 19 parts of sodium silicate were mixed and stirred evenly, and cooled to room temperature to obtain an alkali activator. The straws are dried, shredded, twisted, scaled and cut to obtain straw fragments of a specific length, which are stored in a dry environment for later use. Weigh 14 parts of straw scraps and 20 parts of metakaolin and put them into a blender, then add 9 parts of bentonite, 6 parts of silicon micropowder, then add alkali activator and distilled water, stir well, and wait to form a mixture with both viscosity and good fluidity The slurry was poured into the mold and tamped to shape. After standing at room temperature for 36 hours, the mold was removed and placed in a constant temperature and humidity box for curing to obtain the sample to be tested.

Embodiment 2

[0011] Put 20 parts of kaolin in a muffle furnace and calcined at 850°C for 1.8h to form metakaolin. 8 parts of potassium hydroxide and 18 parts of sodium silicate were mixed and stirred evenly, and cooled to room temperature to obtain an alkali activator. The straws are dried, shredded, twisted, scaled and cut to obtain straw fragments of a specific length, which are stored in a dry environment for later use. Weigh 15 parts of straw scraps and 21 parts of metakaolin and put them into a blender, then add 10 parts of bentonite, 7 parts of silicon micropowder, then add alkali activator and distilled water, stir evenly, and wait to form a mixture with both viscosity and good fluidity The slurry was poured into the mold and tamped to shape. After standing at room temperature for 36 hours, the mold was removed and placed in a constant temperature and humidity box for curing to obtain the sample to be tested.

Embodiment 3

[0013] The samples made in Example 1 and Example 2 (referred to as sample 1 and sample 2) and the existing building materials were tested for compressive strength: according to the preparation method of straw geopolymer, 20 mm×20 mm×20 mm straw geopolymer The material test block is tested for compressive strength using TYE-300B pressure testing machine. The test adopts any set cross-section mode, and the display mode is peak value display. Refer to GB / T 17671-1999 "Cement Mortar Strength Test Method" to adjust and control the loading rate to 600 N / s.

[0014] Test Results:

[0015]

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PUM

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Abstract

The invention discloses a geopolymer construction material. The geopolymer construction material is characterized by comprising the following components: straws, kaolin, bentonite, silica fume, sodium silicate and potassium hydroxide. The geopolymer construction material disclosed by the invention solves the problem that the existing construction material is low in compression strength, thereby providing support for the development of the construction material.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a geopolymer building material. Background technique [0002] Soil polymer is a kind of green building material developed in recent years. Compared with Portland cement, the production of geopolymers can reduce CO2 emissions by about 50% to 80%, and the dust, SO2, NOx and other pollutants emitted by geopolymers during the production process are also greatly reduced compared with the cement production process. It is of great significance to China's energy saving, emission reduction and environmental pollution. On the other hand, straw building materials have also received widespread attention as insulation materials. The energy saving and emission reduction of straw-based building insulation materials are analyzed, and it is found that the energy saving of straw-based building insulation can be as high as about 51 MJ / (kg·a) during the heating period. Under the condition of ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B2201/50C04B14/106C04B12/04C04B22/062C04B18/24C04B14/104C04B14/064C04B22/002Y02P40/10
Inventor 黄波
Owner CHENGDU NASHUO TECH
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