Cementing material modifier as well as preparation method and application thereof

A technology of cementitious materials and modifiers, applied in the field of building materials, can solve the problems affecting compactness, plastering efficiency and effect, not finding chemical water reducing agents, affecting appearance, etc., to achieve improved plastering efficiency and significant economic and social benefits , Improve the effect of construction performance

Inactive Publication Date: 2020-10-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, brucite-phosphate-based cementitious materials also have some shortcomings. For example, compared with Portland cement, its viscosity is too large, which affects the compactness, plastering efficiency and effect; it is an acid-based material, and no corresponding Effective chemical water reducing agent; its color is too white, when used to repair Portland cement concrete, the color difference between the two is too large, affecting the appearance, etc.

Method used

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  • Cementing material modifier as well as preparation method and application thereof
  • Cementing material modifier as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Cementitious material modifiers and building materials are prepared by:

[0027] (1) Mix 1000 parts of fly ash, 0.25 parts of triterpene saponins and 5 parts of xanthan gum in a mixer for 10-20 minutes to obtain a gelling material modifier.

[0028] (2) 1 part of cementitious material, 0.16 part of water and 1 part of sand are mixed, and fully stirred to form a slurry (mortar); wherein, the gelatinous material comprises 80ωt% brucite-phosphate-based cementitious material and 20ωt% cementitious material modifier (modifier dosage 20%); brucite-phosphate-based cementitious material is made up of 100 parts of ammonium dihydrogen phosphate, 200 parts of brucite and 25 parts of borax;

[0029] (3) Pour the slurry into the mold and solidify for 1-3 hours to form;

[0030] (4) Open the mold, take out the cured and formed slurry, and maintain it in the air for 3h-28 days, the temperature is 20±5°C, and the humidity is 70±10rh%. It is forbidden to directly put in water or spray ...

Embodiment 2

[0032] The difference from Example 1 is that the composition of the cementitious material modifier is: 1000 parts of fly ash, 0.5 parts of triterpene saponins, and 4 parts of xanthan gum. The performance indexes are shown in Table 1.

Embodiment 3

[0034] The difference with Example 1 is that the composition of the gelling material modifier is: 1000 parts of fly ash, 1.0 part of triterpene saponins, 3 parts of xanthan gum, and the gelling material comprises brucite-phosphoric acid of 90ωt%. The performance indexes of the salt-based gelling material and the 10ωt% gelling material modifier are shown in Table 1.

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Abstract

The invention relates to a cementing material modifier as well as a preparation method and application thereof. The raw materials of the modifier comprise the following components in parts by mass: 1000 parts of fly ash, 0.2-2.0 parts of triterpenoid saponin and 1-5 parts of xanthan gum. The preparation method comprises the following steps: mixing the fly ash, the triterpenoid saponin and the xanthan gum in parts by mass in a mixer to obtain the cementing material modifier. The cementing material modifier is applied to building materials. Compared with the prior art, the invention has the advantages of reducing viscosity, adjusting chromatic aberration, improving fluidity or workability and the like.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a gelling material modifier and its preparation method and application. Background technique [0002] Brucite-phosphate-based cementitious material is prepared from brucite, ammonium dihydrogen phosphate and borax, because of its excellent comprehensive properties, especially fast setting and hardening, high early strength and bonding strength, thermal expansion coefficient And elastic modulus and Portland cement concrete have good matching, dry shrinkage, etc. It can be widely used in the rapid repair of civil engineering diseases such as highways, airport runways, municipal roads and bridges, industrial floors, and hazardous solid waste The safe disposal of materials and other fields. [0003] However, brucite-phosphate-based cementitious materials also have some shortcomings. For example, compared with Portland cement, its viscosity is too large, which affects the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B28/34
CPCC04B28/344C04B40/0039C04B24/38C04B18/08C04B24/06C04B14/06C04B22/0013C04B22/066
Inventor 杨全兵
Owner TONGJI UNIV
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