Surface layer mortar, grindstone, board and preparation method of grindstone and board

A mortar and surface layer technology, applied in the field of stone, can solve the problems of large deformation in the later stage, easy cracking and warping, and easy return to alkali

Active Publication Date: 2019-05-28
TANGSHAN POLAR BEAR BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Although the floor grindstone or decorative board made of organic resin materials has good strength and bright color, the production process has a certain smell, poor safety, and poor environmental protection; at the same time, when used outdoors, the weather resistance is poor and the price is high. be popularized and applied
[0006] 2. Use (white) Portland cement or sulphoaluminate cement, aluminate cement materials to make floor grinding stones or prefabricated panels. Because of its controllable cost and better durability than organic materials, it has won a lot of attention in the market. A certain degree of promotion, but the floor grindstone or prefabricated boards produced have large size deformation and shrinkage, are easy to crack and warp, and are easy to return to alkali, so they are only suitable for some low-end ground applications, and it is d

Method used

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  • Surface layer mortar, grindstone, board and preparation method of grindstone and board
  • Surface layer mortar, grindstone, board and preparation method of grindstone and board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0039] One embodiment, the white fast setting rapid hardening high belite sulfoaluminate cement is mixed and ground into cement according to the following weight percentages: cement clinker 26-97%, anhydrite 3-19%, slag powder 0-55% %. Cement clinker consists of minerals in the following percentages by weight: 22.67-37.24% of 37.02-46.21% C 2 S, 13.51-26.33% CaSO 4 , 0.5-4.6% f-CaO, 0.46-3.04% C 4 AF, the balance is miscellaneous mineral composition. The clinker has the following chemical composition in weight percent: 12.9-16.1% SiO 2 , 12-19% Al 2 o 3 , 0.15-1% Fe 2 o 3 , 49-53% CaO, 12-18.46% SO 3 , the balance is mixed chemical components; clinker ratio value range Cm: 1.01-1.137, P: 0.62-1.44.

[0040] In another embodiment, the mineral components contained in the cement clinker include 3-9%C 4 AF, 37-47%C 2 S, 0.5-4.6% f-CaO, 14-26.3% CaSO 4 . The clinker has a chemical composition in weight percent: 12.9-16.1% SiO 2 , 12-19% Al 2 o 3 , 1-3% Fe 2 o3 ...

Embodiment 1-8

[0108] See Table 1 for the raw material proportions of the surface mortars provided in Examples 1-8 by mass percentage.

[0109] The preparation method of the surface layer mortar is as follows: white fast setting rapid hardening high belite sulfoaluminate cement 42.5, ordinary white cement, nano silica fume, mineral powder, redispersible rubber powder, retarder, accelerator, Water reducer, defoamer, cellulose, 20-40 mesh white quartz sand, 40-80 mesh white quartz sand, colored glass 1-3mm, colored glass 3-6mm, shell 2-3mm and pigments are mixed together to obtain the surface layer dry mortar. The surface layer dry mortar of Examples 1-8 is uniformly stirred with an appropriate amount of water, and its main properties are tested according to the test methods specified in the following standards:

[0110] Fluidity implements JC / T986-2015 "cement-based grouting materials";

[0111] The free expansion rate implements JC / T-2009 "Testing method for expansion rate of expansive cem...

Embodiment 9-16

[0117] See Table 2 for the raw material proportions of the bottom mortars provided by Examples 9-16 by mass percentage.

[0118] The preparation method of the bottom mortar is as follows: white fast-setting rapid-hardening high-belite sulfoaluminate cement 42.5, ordinary white cement, slag powder, redispersible rubber powder, retarder, accelerator, water reducer, Foaming agent, cellulose, 20-40 mesh white quartz sand, 40-80 mesh white quartz sand and high alkali-resistant fiber (12mm) are mixed together to obtain the bottom dry mortar. The bottom dry mortar of Examples 9-16 was uniformly stirred with an appropriate amount of water, and its main properties were tested according to the same method as in Example 1. The results are shown in Table 2.

[0119] The bottom mortar of table 2 embodiment 9-16

[0120]

[0121]

[0122] It can be seen from Table 1-Table 2 that the fluidity, flexural and compressive strength, free expansion rate and water absorption rate of the surf...

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Abstract

The invention discloses surface layer mortar, grindstone, a board and a preparation method of the grindstone and the board, and relates to the technical field of stone materials. The surface layer mortar is prepared from the following components in percent by mass: 20-45% of cement, 55-67% of aggregate, 0-5.4% of nanometer silica fume, 0-6.5% of mineral powder, 2-3% of dispersible rubber powder, 0-0.2% of a retarder, 0.1-0.3% of a coagulant, 0.1-0.3% of a water reducing agent, 0.05-0.3% of a defoaming agent, 0.01-0.02% of a thickening agent and 2-3% of pigment; the cement comprises high belitesulfoaluminate cement and optional ordinary cement, wherein the mass of the high belite sulfoaluminate cement accounts for 20-100% of the mass of the cement; and the water-material ratio of the surface layer mortar is 0.08-0.1. The fluidity, breaking and compressive strength and free expansion rate of the surface layer mortar meet related index requirements; and the grindstone or board prepared by adopting the surface layer mortar is small in size shrinkage, does not deform, does not crack, and has no alkali efflorescence.

Description

technical field [0001] The invention relates to the technical field of stone materials, in particular to a surface layer mortar, a grinding stone, a board and a preparation method thereof. Background technique [0002] With the depletion of natural stone resources and the influence of green, coordinated, sustainable development and environmental protection orientation, artificial terrazzo floor and decorative board materials have attracted more and more attention from the society due to their advantages of safety, fire prevention, durability and high cost performance. recognized. [0003] At present, there are several forms of floor grinding stone and decorative board materials on the market: one is based on organic epoxy resin materials, polyurethane resin materials, etc., and the other is based on (white) Portland cement or sulfur aluminum Salt cement and aluminate cement are used as inorganic cementitious materials, and there is another kind that is compounded by adding ...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B111/20
Inventor 刘成健葛仲熙陈智丰张振秋张淑艳王国兴翟朝阳杨希斌
Owner TANGSHAN POLAR BEAR BUILDING MATERIAL
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