Few-pore anti-crack mortar 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 that the pores cannot be eliminated in time, and the cement hydration is uneven, so as to improve the overall strength and anti-cracking ability, and enhance the length of the main chain and structural stability, the effect of reducing water consumption

Active Publication Date: 2020-09-11
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 modificati

Method used

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  • Few-pore anti-crack mortar and preparation method thereof

Examples

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Comparison scheme
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. Directed at the problems that cement in existing mortar is non-uniform in hydration and pores cannot be eliminated in time, the invention discloses a few-pore anti-crack mortar and a preparation method thereof. The mixed mortar is prepared from 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 carbonate, 3-5 parts of a modified water reducing agent, 1-3 parts of modified vermiculite, 0.3-0.5 part of sodium dodecyl benzene sulfonate and 600-700 parts of water. By adjusting and modifying the added components, the overall formula of the mortar is optimized, pore defects in the mortar forming process are eliminated, the effective time of cement hydration is prolonged, internal thermal stress is eliminated in time, and the size shrinkage resistance and cracking resistance of the model are improved.

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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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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