Caulking anti-crack mortar

A technology for anti-cracking mortar and sand, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as high strength and plate damage, achieve good crack resistance, prevent cracking, and increase water resistance performance effect

Inactive Publication Date: 2015-11-04
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the excessive strength of some caulking mortar, the tensile stress on the board when it shrinks is greater than the adhesive force of the board itself, causing damage to the board

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0010] A joint-filling anti-cracking mortar of the present invention consists of the following components in parts by weight: 15 parts of plaster of paris, 6.4 parts of cement, 70 parts of sand, 9.6 parts of fly ash, 1.8 parts of mineral powder, 2.0 parts of dispersible latex powder, water retention 0.26 parts of agent, 1.27 parts of expansion agent, 1.2 parts of activator, 0.15 parts of polypropylene fiber, 0.16 part of water reducing agent, 0.45 part of waterproofing agent, and 0.05 part of retarder.

[0011] The selected sand is 40-70 mesh river sand; the selected water retention agent is hydroxypropyl methylcellulose; the selected expansion agent is calcium sulfoaluminate system; the selected retarder is citric acid.

[0012] It is suitable for joint filling and anti-cracking mortar for gypsum-based composite partition wall slats.

Embodiment example 2

[0014] A joint-filling anti-cracking mortar of the present invention consists of the following components in parts by weight: 25 parts of plaster of paris, 10.5 parts of cement, 55 parts of sand, 15.6 parts of fly ash, 2.5 parts of mineral powder, 2.3 parts of dispersible latex powder, water retention 0.28 parts of agent, 0.87 parts of expansion agent, 1.8 parts of activator, 0.15 parts of polypropylene fiber, 0.18 part of water reducing agent, 0.45 part of waterproofing agent, and 0.13 part of retarder.

[0015] The selected sand is 40-70 mesh river sand; the selected water retention agent is hydroxypropyl methylcellulose; the selected expansion agent is calcium sulfoaluminate system; the selected retarder is SC gypsum retarder.

[0016] It is suitable for joint filling and anti-cracking mortar for air-entrained concrete partition wall slabs.

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Abstract

The invention discloses a caulking anti-crack mortar comprising the following components, by weight: 10-30 parts of calcined gypsum, 5-15 parts of cement, 50-75 parts of sand, 8-20 parts of fly ash, 1-5 parts of mineral powder, 1.5-3 parts of re-dispersible latex powder, 0. 2-0.5 parts of a water-retaining agent, 0.5-3 parts of an extender, 0.5-3 parts of an activator, 0.1-0.3 parts of polypropylene fiber, 0.15-0.2 parts of a water reducing agent, 0.2-0.5 parts of a waterproof agent, and 0.02-0.2 parts of a retarder. The mortar has the advantages of simple preparation and convenient construction. The prepared caulking anti-crack mortar has high bonding strength, and does not shrink, such that the flatness of a joint is ensured, and cracking and falling phenomena are avoided.

Description

technical field [0001] The invention relates to a seam-filling anti-cracking mortar. Background technique [0002] During the construction process of aerated concrete partition wall slats, gypsum slats, composite material slats, etc., plastering mortar is mainly used. Due to the large shrinkage value of ordinary mortar, it is easy to crack and fall off after a long time This phenomenon has a great impact on wall decoration and safety. Due to the excessive strength of some caulking mortars, the tensile stress on the plates during shrinkage is greater than the adhesive force of the plates themselves, causing damage to the plates. Contents of the invention [0003] The invention proposes a seam-filling and anti-cracking mortar, which solves the problem of cracking between board seams from the source. [0004] In order to achieve the above object, the present invention provides a joint-filling anti-cracking mortar, comprising the following components by weight: 10-30 parts o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B14/06C04B18/08C04B16/06
CPCY02W30/91
Inventor 张国辉温海滨
Owner UNIV OF JINAN
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