Anti-cracking waterproof mortar

A waterproof mortar and mortar technology, applied in the field of building materials, can solve problems such as low bond strength performance, and achieve the effects of good waterproofness, reasonable ratio, high bond strength and impact strength

Inactive Publication Date: 2013-10-02
杭州正博新型建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mortar has good compressive strength and excellent thermal insulation performance, but its bonding strength is still low, and the bonding strength can only reach about 0.1MPa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Anti-cracking waterproof mortar, including the mass percentage of the following components:

[0029] Cement: 27wt%, said cement is Portland cement;

[0030] Sand: 70wt%;

[0031] Polymer latex powder: 2.5wt%, said polymer latex powder is selected from vinyl acetate-ethylene copolymer powder;

[0032] Admixture: 0.5wt%, the admixture is a mixture of starch ether, wood fiber and polypropylene fiber, and the mass ratio of starch ether: wood fiber: polypropylene fiber is 1:0.2:0.5;

[0033] Fatty acid water repellent: 0.2wt%.

[0034] After weighing the corresponding raw materials according to the mass percentage of the above-mentioned components and mixing them uniformly, adding an appropriate amount of water, stirring and mixing them uniformly, the slurry-resistant and waterproof mortar is obtained.

Embodiment 2

[0036] Anti-cracking waterproof mortar, including the mass percentage of the following components:

[0037] Cement: 35wt%, said cement is Portland cement;

[0038] Sand: 62wt%;

[0039] Polymer latex powder: 2.0wt%, said polymer latex powder is selected from vinyl acetate, ethylene and higher fatty acid ethylene fat ternary copolymer rubber powder;

[0040] Admixture: 0.8wt%, the admixture is a mixture of starch ether, wood fiber and polypropylene fiber, and the mass ratio of starch ether: wood fiber: polypropylene fiber is 1:0.4:0.4;

[0041] Fatty acid water repellent: 0.2wt%.

[0042] After weighing the corresponding raw materials according to the mass percentage of the above-mentioned components and mixing them uniformly, adding an appropriate amount of water, stirring and mixing them uniformly, the slurry-resistant and waterproof mortar is obtained.

Embodiment 3

[0044] Anti-cracking waterproof mortar, including the mass percentage of the following components:

[0045] Cement: 34wt%, said cement is Portland cement;

[0046] Sand: 64wt%;

[0047] Polymer latex powder: 2.2wt%, said polymer latex powder is selected from vinyl acetate and higher fatty acid vinyl fat copolymerized rubber powder;

[0048] Admixture: 0.7wt%, the admixture is a mixture of starch ether, wood fiber and polypropylene fiber, and the mass ratio of starch ether: wood fiber: polypropylene fiber is 1:0.35:0.45;

[0049] Fatty acid water repellent: 0.1wt%.

[0050] After weighing the corresponding raw materials according to the mass percentage of the above-mentioned components and mixing them uniformly, adding an appropriate amount of water, stirring and mixing them uniformly, the slurry-resistant and waterproof mortar is obtained.

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Abstract

The invention relates to anti-cracking waterproof mortar belonging to the technical field of construction materials. In order to solve the problem that the existing anti-cracking mortar is low in tensile binding strength and water-immersed tensile binding strength, the invention provides the anti-cracking waterproof mortar. The mortar comprises the following components in percentage by mass: 27-35wt% of cement, 62-70wt% of sand, 2.0-2.5wt% of polymer latex powder, 0.5-1.0wt% of admixture and 0.1-0.2wt% of fatty acid waterproofing agent, wherein the polymer latex powder is selected from one or more of vinyl acetate-ethylene polymerization rubber powder, ethylene/vinyl chloride/vinyl laurate ternary polymerization rubber powder, vinyl acetate/ethylene/higher fatty acid vinyl ester ternary polymerization rubber powder and vinyl acetate-higher fatty acid vinyl ester polymerization rubber powder. The anti-cracking waterproof mortar has the advantages of reasonable distribution ratio, favorable binding strength, water resistance and anti-cracking effect, and low heat conductivity coefficient.

Description

technical field [0001] The invention relates to a crack-resistant and waterproof mortar, which belongs to the technical field of building materials. Background technique [0002] Cement mortar is an existing material mainly used for multi-storey and high-rise building walls with concrete, small concrete hollow blocks, sintered porous bricks, solid clay bricks and non-clay bricks and plastering surfaces with mesh in the practice of large-scale built-in. The external wall insulation project is also suitable for energy-saving renovation projects of various existing buildings. However, the existing cement mortar mainly has the disadvantages of easy cracking, low compressive strength, poor non-toxic impact resistance, low thermal insulation performance and poor bonding strength. For example, Chinese patent application (publication number: 101723631A) discloses an anti-cracking mortar, which contains the mass percentage of the following components: cement: 20wt% ~ 35wt%, quartz s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04
Inventor 张正良
Owner 杭州正博新型建筑材料有限公司
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