Method for preparing ground self-leveling mortar

A self-leveling mortar and ground technology, applied in the field of self-leveling mortar, can solve the problems of poor surface flatness, poor surface wear resistance, slow strength development, etc., and achieve simple preparation and application methods, high early strength, and easy construction. good effect

Inactive Publication Date: 2017-04-26
闫博文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: the present invention provides a ground self-leveling mortar for the defects of shrinkage cracking, hollowing, skinning, poor surface wear resistance, poor surface flatness, and slow strength development in the traditional self-leveling mortar. The preparation method of mortar, the present invention uses pyrite beneficiation tailings as raw material to pulverize, screens out powders of different particle sizes, and mixes them with natural sand to obtain composite aggregate sand, then mixes sulphoaluminate cement, silicate Cement and α-hemihydrate gypsum are mixed in a mixer to obtain a ternary sy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Take pyrite ore dressing tailings, put it into the jaw crusher for primary crushing, then transfer it to the disc crusher for secondary crushing, and then transfer it to the vibrating screen machine to screen out particle sizes of 0.01mm, 0.15mm, 0.3mm, 0.6mm powder, to get pyrite mineral processing tailings of various particle sizes; in parts by weight, weigh 1 part of the above-mentioned 0.01mm pyrite mineral processing tailings, 30 parts of the above-mentioned 0.15mm pyrite mineral processing tailings , 55 parts of the above-mentioned 0.3mm pyrite beneficiation tailings, 5 parts of the above-mentioned 0.6mm pyrite beneficiation tailings, 25 parts of natural sand, put into the mixer and mix for 30min to obtain composite aggregate sand, calculated in parts by weight , weigh 15 parts of sulfoaluminate cement, 5 parts of α-hemihydrate gypsum, 75 parts of ordinary Portland cement, and 1 part of polyaluminum, put them into a mixer and mix for 30 minutes to obtain a ternary ...

example 2

[0019] Take pyrite ore dressing tailings, put them into a jaw crusher for primary crushing, then transfer them to a disc crusher for secondary crushing, and then transfer them to a vibrating screen machine to screen out particle sizes of 0.15mm, 0.30mm, 0.6mm, 1.1mm powder, to get pyrite mineral processing tailings of various particle sizes; by weight, take 3 parts of the above-mentioned 0.15mm pyrite mineral processing tailings, 35 parts of the above-mentioned 0.30mm pyrite mineral processing tailings , 60 parts of the above-mentioned 0.6mm pyrite beneficiation tailings, 8 parts of the above-mentioned 1.1mm pyrite beneficiation tailings, 30 parts of natural sand, put into the mixer and mix for 40min to get composite aggregate sand, calculated in parts by weight , weighed 18 parts of sulfoaluminate cement, 6 parts of α-hemihydrate gypsum, 80 parts of ordinary Portland cement, and 2 parts of polyaluminum, put them into a mixer and mixed for 40 minutes to obtain a ternary system ...

example 3

[0021] Take pyrite ore dressing tailings, put them into a jaw crusher for primary crushing, then transfer them to a disc crusher for secondary crushing, and then transfer them to a vibrating screen machine to screen out particle sizes of 0.13mm, 0.22mm, 0.5mm, 0.9mm powder, to get pyrite mineral processing tailings of various particle sizes; in parts by weight, weigh 2 parts of the above-mentioned 0.07mm pyrite mineral processing tailings, 33 parts of the above-mentioned 0.22mm pyrite mineral processing tailings , 58 parts of the above-mentioned 0.5mm pyrite beneficiation tailings, 7 parts of the above-mentioned 0.8mm pyrite beneficiation tailings, 28 parts of natural sand, put into the mixer and mix for 35min to obtain composite aggregate sand, calculated in parts by weight , weighed 17 parts of sulfoaluminate cement, 6 parts of α-hemihydrate gypsum, 78 parts of ordinary Portland cement, and 2 parts of polyaluminum, put them into a mixer and mixed for 35 minutes to obtain a tern...

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Abstract

The invention relates to a method for preparing ground self-leveling mortar, and belongs to the technical field of self-leveling mortar. The ground self-leveling mortar is prepared as follows: pyrite beneficiation tailings are used as a raw material for crushing and screening to obtain powder with different particle sizes, the powder with different particle sizes and natural sand are mixed to obtain composite aggregate sand, sulphoaluminate cement, Portland cement and alpha-hemihydrate gypsum and the like are filled into a blender for mixing to obtain a three-element system cementitious material, the three-element system cementitious material, the composite aggregate sand, vinyl acetate /vinyl versatate copolymer latex powder, a defoaming agent and the like are filled into the blender for even mixing to obtain the ground self-leveling mortar. A small amount of ultrafine powder in the pyrite beneficiation tailings is attached to a three-element cementitious mortar interface region in a cement hydration process, and is filled into a large number of voids formed in the hydration process through the micro aggregate effect, a mortar hardened body structure is compacted, mortar strength and impermeability are greatly improved, and the mortar hardened body abrasion loss can be significantly reduced.

Description

technical field [0001] The invention relates to a preparation method of self-leveling mortar for ground, and belongs to the technical field of self-leveling mortar. Background technique [0002] Self-leveling material is a new type of ground material developed gradually at home and abroad in the 1980s. It has the advantages of good fluidity, easy construction, fast leveling speed, time-saving, thin leveling layer, good ground flatness, and high compressive strength. , can effectively solve the slow construction speed, poor flatness, easy sanding and other phenomena caused by plastering of traditional floor materials, which greatly meets the high requirements of new buildings on the base layer, and is suitable for ground repair and decoration projects. [0003] At present, self-leveling materials have become ideal materials for floor paving of large supermarkets, shopping malls, parking lots, factory workshops, warehouses, etc., and are also a development direction of modern ...

Claims

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Application Information

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IPC IPC(8): C04B28/14E04F15/12C04B111/27
CPCC04B28/146C04B2111/27E04F15/12
Inventor 闫博文宋豪赵玲玲
Owner 闫博文
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