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Full-machine-made sand plastering mortar taking limestone as aggregate and preparation method thereof

A technology of limestone machine-made sand and plastering mortar, which is applied in the field of building materials, can solve the problems of poor water retention rate of river sand, artificial sand and mixed sand, weak bonding of the wall base, rapid water loss of mortar, etc., and achieves abundant stock. , the effect of alleviating the depletion of mining and increasing the water retention rate

Inactive Publication Date: 2020-07-10
湖州三中新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing plastering mortar uses any one of river sand, artificial sand or mixed sand as the aggregate. Compared with dry-mixed mortar, the aggregate does not need to be dried, which reduces the drying waste of the aggregate and part of the transportation. cost, which greatly reduces the material cost, but the water retention rate of river sand, artificial sand and mixed sand is poor, which makes the mortar lose water quickly, cause serious bleeding, and workability deviation, which is prone to poor adhesion and sticks to the base of the wall. The knot is not firm, there will be cracks after application, and problems such as detachment from the base layer and hollowing will occur.

Method used

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  • Full-machine-made sand plastering mortar taking limestone as aggregate and preparation method thereof
  • Full-machine-made sand plastering mortar taking limestone as aggregate and preparation method thereof
  • Full-machine-made sand plastering mortar taking limestone as aggregate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0038] In Preparation Example 1-3, the magnetic chitosan microspheres were selected from Zhengzhou Yingnuo Biotechnology Co., Ltd., the carbon nanotubes were selected from the carbon nanotubes sold by Beijing Deke Daojin Technology Co., Ltd., and the aluminum powder was selected from Foshan The aluminum powder sold by City Jieke New Material Co., Ltd. is AK11, and the silicon carbide is selected from the silicon carbide sold by Qinghe County Yaoxie Metal Materials Co., Ltd. with the model YX099.

preparation example 1

[0039] Preparation Example 1: (1) According to the ratio in Table 1, mix 2kg magnetic chitosan microspheres and 4kg paraffin wax, stir for 1.5h in a constant temperature water bath at 80°C, add 2.5kg aluminum powder and 1kg silicon carbide , stirred for 1 h under negative pressure, and dried in vacuum;

[0040] (2) Mix 3.5kg cornstarch with 2kg xanthan gum, gelatinize in a water bath at 90°C, add 0.1kg N,N-methylenebisacrylamide and 0.1kg sodium persulfate after cooling, and stir for 2 hours to obtain coating fluid;

[0041] (3) After uniformly mixing the coating liquid and the product obtained in step (1), add 1.2 kg of graphite and 1 kg of carbon nanotubes, stir evenly, and dry at 40° C.

[0042] The raw material ratio of the fixed phase change material in the preparation example 1-3 of table 1

[0043]

[0044]

preparation example 2

[0045] Preparation Example 2: (1) According to the proportioning in Table 1, mix 2.5kg of magnetic chitosan microspheres and 5kg of paraffin wax, stir for 1.3h in a constant temperature water bath at 85°C, add 3.3kg of aluminum powder and 1.5kg of Silicon carbide, stirred for 1.5h under negative pressure, and dried in vacuum;

[0046] (2) Mix 4.3kg cornstarch and 3kg xanthan gum, gelatinize in a water bath at 100°C, add 0.2kg N, N-methylenebisacrylamide and 0.2kg sodium persulfate after cooling, and stir for 2.5 hours to prepare get coating solution;

[0047] (3) After uniformly mixing the coating solution and the product obtained in step (1), add 1.8 kg of graphite and 1.5 kg of carbon nanotubes, stir evenly, and dry at 45° C.

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Abstract

The invention discloses full-machine-made sand plastering mortar taking limestone as aggregate and a preparation method of the full-machine-made sand plastering mortar. The full-machine-made sand plastering mortar taking limestone as the aggregate comprises the following components in parts by weight: 140-160 parts of cement, 770-820 parts of limestone machine-made sand, 40-70 parts of limestone powder, 0.2-0.3 part of cellulose ether, 0.005-0.01 part of an air entraining agent and 0.02-0.04 part of a thixotropic lubricant. Wherein the limestone machine-made sand and the limestone powder are prepared by crushing high-calcium stones, the fineness modulus of the limestone machine-made sand is 2.5, and the fineness modulus of the limestone powder is 0.07. The full-machine-made sand plasteringmortar taking limestone as the aggregate has the advantages of less bleeding, good workability, strong binding power after construction, no shrinkage, no hollowing, smooth and flat surface, low raw material cost, no secondary pollution, heat conduction, good heat dissipation and capability of adsorbing formaldehyde and purifying air.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to a fully machine-made sand plastering mortar with limestone as aggregate and a preparation method thereof. Background technique [0002] Plastering mortar is applied on the inner and outer walls, top, bottom and column surfaces of buildings to play the role of leveling, waterproofing, protection and decoration building materials. Dry-mixed plastering mortar is based on cement as the main bonding base material. With river sand, admixtures, admixtures and other ingredients, after weighing the ingredients and mixing them evenly, it can be used after adding water at the construction site and stirring. [0003] In the prior art, the Chinese invention patent application document with the application number 201210557367.4 discloses a mechanical construction plastering mortar and its preparation method. The plastering mortar is made by mixing powder, aggregate, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00008C04B2111/00017C04B2201/32C04B2201/50C04B14/28C04B24/383C04B2103/304C04B2103/0085C04B24/38C04B24/36C04B22/04C04B14/026C04B22/02C04B14/324C04B24/124C04B22/147
Inventor 沈冰斌王坚
Owner 湖州三中新型建材科技有限公司
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