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A kind of anti-cracking mortar with less porosity and preparation method thereof

An anti-cracking mortar and pore technology, which is applied in the field of less-porous anti-cracking mortar and its preparation, can solve the problems of uneven cement hydration and pores that cannot be eliminated in time, and achieve the elimination of internal thermal stress, elimination of pore defects, and reduction of pore defects Effect

Active Publication Date: 2021-11-02
李果
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the problem of uneven cement hydration and pores that cannot be eliminated in time in the existing mortar, and provides a less-porous anti-cracking mortar and its preparation method. The present invention realizes the adjustment and modification of the added components to realize the Overall formula optimization eliminates pore defects during mortar molding, prolongs the effective time of cement hydration, eliminates internal thermal stress in time, and improves the model's ability to resist dimensional shrinkage and cracking

Method used

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  • A kind of anti-cracking mortar with less porosity and preparation method thereof

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Effect test

Embodiment 1

[0038] A kind of anti-cracking mortar with less pores, the mixed mortar includes the following components: 670 parts of furnace bottom slag, 230 parts of granulated blast furnace slag powder, 49 parts of titanium gypsum, 11 parts of Portland cement clinker, 7 parts of glass powder, 5 parts of heavy calcium, 4 parts of modified water reducer, 2 parts of modified vermiculite, 0.4 part of sodium dodecylbenzenesulfonate, 650 parts of water; the particle size of the furnace bottom slag is less than or equal to 2.36mm.

[0039] The preparation method of described modified vermiculite is:

[0040] a. Surface removal: After the vermiculite is extracted with acetone, the surface attachments are cleaned in distilled water and dried;

[0041] b. Activation treatment: place the purified vermiculite in the plasma chamber for 75s, and the discharge gas is oxygen to obtain activated vermiculite; the power of the plasma chamber described in step b is 255W, and the flow rate is 310Pa m 3 / s. ...

Embodiment 2

[0050] The difference from Example 1 is that it is a kind of anti-cracking mortar with less porosity, and the mixed mortar includes the following components: 650 parts of furnace bottom slag, 220 parts of granulated blast furnace slag powder, 48 parts of titanium gypsum, and 10 parts of Portland cement Clinker, 6 parts of glass powder, 4 parts of heavy calcium, 3 parts of modified water reducer, 1 part of modified vermiculite, 0.3 part of sodium dodecylbenzenesulfonate, 600 parts of water; The diameter is less than or equal to 2.36mm.

[0051] The preparation method of described modified vermiculite is:

[0052] a. Surface removal: After the vermiculite is extracted with acetone, the surface attachments are cleaned in distilled water and dried;

[0053] b. Activation treatment: place the purified vermiculite in the plasma chamber for 60s, and the discharge gas is oxygen to obtain activated vermiculite; the power of the plasma chamber described in step b is 250W, and the flow ...

Embodiment 3

[0062] The difference from Example 1 is that it is a less porous anti-cracking mortar, and the mixed mortar includes the following components: 660 parts of furnace bottom slag, 225 parts of granulated blast furnace slag powder, 48.5 parts of titanium gypsum, and 10.5 parts of Portland cement Clinker, 6.5 parts of glass powder, 4.5 parts of heavy calcium, 3.5 parts of modified water reducer, 1.5 parts of modified vermiculite, 0.35 part of sodium dodecylbenzenesulfonate, 620 parts of water; The diameter is less than or equal to 2.36mm.

[0063] The preparation method of described modified vermiculite is:

[0064] a. Surface removal: After the vermiculite is extracted with acetone, the surface attachments are cleaned in distilled water and dried;

[0065] b. Activation treatment: place the purified vermiculite in a plasma chamber for 70 seconds, and the discharge gas is oxygen to obtain activated vermiculite; the power of the plasma chamber described in step b is 252W, and the f...

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Abstract

The invention relates to the technical field of building materials. Aiming at the problems of uneven cement hydration and pores that cannot be eliminated in time in the existing mortar, it discloses a less-porous anti-cracking mortar and a preparation method thereof. The mixed mortar includes the following components: 650‑700 parts of furnace bottom slag, 220‑240 parts of granulated blast furnace slag powder, 48‑50 parts of titanium gypsum, 10‑12 parts of Portland cement clinker, 6‑8 parts of glass powder, 4‑6 parts of heavy calcium, 3-5 parts of modified water reducer, 1-3 parts of modified vermiculite, 0.3-0.5 parts of sodium dodecylbenzenesulfonate, 600-700 parts of water. The invention realizes the adjustment and modification of the added components, realizes the overall formula optimization of the mortar, eliminates the pore defects in the mortar forming process, prolongs the effective time of cement hydration, eliminates the internal thermal stress in time, and improves the size shrinkage and resistance of the model. Cracking ability.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a less-porous anti-crack mortar and a preparation method thereof. Background technique [0002] Mortar refers to the bonding material used for building masonry and leveling. It is made by mixing a certain proportion of sand and cementing materials with water, also called mortar. Commonly used are cement mortar, mixed mortar, lime mortar and clay mortar. The mixed mortar uses cement and gypsum powder as the gelling agent, which has the advantages of softness, good water retention, and convenient construction. Wall stucco. Although cement mortar can overcome the defects of mixed mortar, it has the disadvantages of poor workability, excessive bleeding, high cement consumption, and fast hardening. The cement emits a large amount of heat during the hydration reaction, which heats up the internal temperature of the mortar and forms a certain temperature difference with th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B40/00C04B20/02C04B24/26C08F220/20C08F212/14C08F222/08C04B14/20C04B103/30C04B111/34
CPCC04B20/023C04B24/2688C04B28/142C04B40/0028C04B2103/302C04B2111/343C08F220/20C08F212/24C04B18/10C04B18/141C04B7/02C04B14/22C04B14/28C04B24/20C04B14/202C04B22/002C08F222/08
Inventor 李果
Owner 李果
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