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Calcination-free desulfurized gypsum dry mixed mortar

A technology for desulfurized gypsum and dry-mixed mortar, which is applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of low storage, large investment, huge supporting facilities, etc., and achieves low cost and easy implementation. Effect

Active Publication Date: 2011-08-17
SHANDONG CHENGHUA BUILDING MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, as a natural resource, natural hemihydrate gypsum has less and less storage capacity; on the other hand, using industrial desulfurization by-product dihydrate desulfurization gypsum to be calcined into hemihydrate gypsum will cause environmental pollution, and there are huge supporting facilities , Insufficient investment, etc.

Method used

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  • Calcination-free desulfurized gypsum dry mixed mortar
  • Calcination-free desulfurized gypsum dry mixed mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 (interior wall plastering dry-mixed mortar):

[0033] formula:

[0034] Dihydrate desulfurized gypsum (40 mesh): 40Kg Ordinary Portland cement: 12Kg

[0035] Construction sand: 55Kg (fineness less than 4mm) quicklime: 2Kg

[0036] Methylcellulose: 0.2Kg Wood fiber: 0.4Kg

[0037] Preparation:

[0038] After accurately measuring various raw materials according to the above formula, mix and force mechanical stirring to obtain the target product.

Embodiment 2

[0039] Embodiment 2 (external wall plastering dry-mixed mortar):

[0040] formula:

[0041] Dihydrate desulfurized gypsum (40 mesh): 40Kg Ordinary Portland cement: 12Kg

[0042] Construction sand: 55Kg (fineness less than 4mm) quicklime: 2Kg

[0043] Methylcellulose: 0.2Kg Wood fiber: 0.4Kg

[0044] Polymer redispersible powder: 0.6Kg

[0045] Preparation:

[0046] After accurately measuring various raw materials according to the above formula, mix and force mechanical stirring to obtain the target product.

[0047] During the construction process, the water consumption shall be calculated according to the standard water consumption with a slurry diffusion diameter of 150±5mm. Before construction, the wall surface should be fully wet, and the materials should be fully mixed evenly, so as to produce better strength.

[0048] According to the standard method used by my country's construction industry, the technical performance test results of the above-mentioned embodiment...

Embodiment 3

[0050] Embodiment three (interior wall plastering dry-mixed mortar):

[0051] formula:

[0052] Dihydrate desulfurized gypsum (40 mesh): 45Kg Fly ash: 14Kg

[0053] Water-quenched slag: 52Kg (fineness less than 4mm) Quicklime: 3Kg

[0054] Hydroxyethyl methylcellulose: 0.4Kg Polyacrylonitrile fiber: 0.4Kg

[0055] Preparation:

[0056] After accurately measuring various raw materials according to the above formula, mix and force mechanical stirring to obtain the target product.

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Abstract

The invention discloses a calcination-free desulfurized gypsum dry mixed mortar, pertaining to the production field of preblended dry mixed mortar used for building. The dry mixed mortar is produced by the following ingredients by weight proportion: 30-50 portions of desulfurized dehydrate gypsum; 10-15 portions of hydraulic cementing materials, 50-60 portions of aggregate, 1-5 portions of unslaked lime and 0.1-0.3 portion of water retention agent and 0.3-0.5 portion of anticracking agent. Compared with the prior art, the calcination-free desulfurized gypsum dry mixed mortar is characterized by energy saving, environmental protection, low material cost and the like.

Description

technical field [0001] The invention relates to a ready-mixed dry-mixed mortar material for construction, in particular to a calcined-free desulfurized gypsum dry-mixed mortar. Background technique [0002] Wall (inner wall, outer wall) plastering dry-mixed mortar is an important part of construction engineering. In the prior art, dry-mixed mortar for wall plastering is mainly prepared by the following methods: first, direct use of natural hemihydrate gypsum for production; It is formulated with additives such as coagulation and water retention and aggregates such as quartz sand. On the one hand, as a natural resource, natural hemihydrate gypsum has less and less storage capacity; on the other hand, using industrial desulfurization by-product dihydrate desulfurization gypsum to be calcined into hemihydrate gypsum will cause environmental pollution, and there are huge supporting facilities , Insufficient investment and so on. The production cost of wall plastering dry-mixe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B22/06
CPCC04B28/144Y02W30/91C04B7/02C04B14/02C04B16/0658C04B18/08C04B22/064C04B2103/0052C04B2103/46C04B18/26C04B24/085C04B24/383
Inventor 苏同兴王爱民王庆珍赵兵
Owner SHANDONG CHENGHUA BUILDING MATERIAL TECH
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