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Gypsum-based self-leveling repair mortar and preparation method thereof

A repairing mortar and self-leveling technology, which is applied in the field of gypsum building materials, can solve the problems of gypsum-based self-leveling ground cracks and incomplete repairs, and achieve the effects of convenient repairs, cost-saving ground repairs, and rapid repairs

Active Publication Date: 2020-07-10
HENAN QIANGNAI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a gypsum-based self-leveling repair mortar and its preparation method to solve the problem that the gypsum-based self-leveling ground cannot be completely repaired after cracking

Method used

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  • Gypsum-based self-leveling repair mortar and preparation method thereof

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preparation example Construction

[0042] In order to further understand the gypsum-based self-leveling repair mortar of the present invention, the present invention also provides a preparation method of the gypsum-based self-leveling repair mortar, the preparation method comprising the following steps:

[0043] Step 1: Weigh construction gypsum, quartz sand and stone powder in a container according to the proportion, stir and mix evenly, then add gypsum retarder, water retaining agent, rubber powder, defoamer and water reducer in sequence, stir and mix evenly to obtain dry powder;

[0044] Step 2: Add a certain amount of water into the dry powder obtained in Step 1, stir and mix evenly, and obtain gypsum-based self-leveling repair mortar.

[0045] In a specific embodiment of the present invention, the preparation method of building gypsum in step 1 is: calcining desulfurized gypsum at 160-165°C (such as 160°C, 161°C, 162°C, 163°C, 164°C, 165°C) for 1-2 hours (such as 1h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h...

Embodiment 1

[0049] This embodiment provides a gypsum-based self-leveling repair mortar, in parts by weight, the formula of the gypsum-based self-leveling repair mortar is: 40 parts of building gypsum, 50 parts of quartz sand, 10 parts of stone powder, 0.1 part of gypsum retarder, 0.01 part of water retaining agent, 0.01 part of rubber powder, 0.1 part of defoamer, 0.1 part of water reducing agent, 25 parts of water.

[0050] Among them, the preparation method of the building gypsum is: calcining the desulfurized gypsum at 160° C. for 2 hours, cooling to room temperature, grinding it in a ball mill, and aging for 6 days to obtain the building gypsum.

[0051] The preparation method of gypsum-based self-leveling repair mortar in this embodiment is as follows:

[0052] Step 1: Weigh 400kg of construction gypsum, 500kg of quartz sand and 100kg of stone powder in a container according to the proportioning ratio, and after stirring and mixing evenly, add 1kg of composite retarder (mixed with ta...

Embodiment 2

[0057] This embodiment provides a gypsum-based self-leveling repair mortar. In parts by weight, the formula of the gypsum-based self-leveling repair mortar is: 45 parts of building gypsum, 45 parts of quartz sand, 10 parts of stone powder, 0.1 part of gypsum retarder, 0.01 part of water retaining agent, 0.01 part of rubber powder, 0.1 part of defoamer, 0.1 part of water reducing agent, 25 parts of water.

[0058] Among them, the preparation method of the building gypsum is: calcining the desulfurized gypsum at 160° C. for 2 hours, cooling to room temperature, grinding it in a ball mill, and aging for 6 days to obtain the building gypsum.

[0059] The preparation method of gypsum-based self-leveling repair mortar in this embodiment is as follows:

[0060] Step 1. Weigh 450kg of construction gypsum, 450kg of quartz sand and 100kg of stone powder in a container according to the proportioning ratio. After stirring and mixing evenly, add 1.0kg of composite retarder (mixed with tart...

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Abstract

The invention provides gypsum-based self-leveling repair mortar and a preparation method thereof. The repair mortar is prepared from the following components in parts by weight: 40 to 60 parts of building gypsum, 40 to 60 parts of quartz sand, 0 to 10 parts of stone powder, 0.1 to 0.2 part of a gypsum retarder, 0.01 to 0.02 part of a water-retaining agent, 0.01 to 0.02 part of rubber powder, 0.05to 0.15 part of a defoaming agent and 0.1 to 0.15 part of a water reducing agent. The preparation method comprises the following steps: uniformly mixing the building gypsum, the quartz sand and the stone powder in proportion, sequentially adding the gypsum retarder, the water-retaining agent, the rubber powder, the defoaming agent and the water reducing agent, uniformly mixing, adding water, and uniformly stirring and mixing to obtain the repair mortar. The repair mortar is high in tensile bonding strength, capable of achieving rapid repairing of gypsum-based self-leveling ground, convenient to repair, high in efficiency and free of shrinkage and cracking on the ground in the later period, and the problem that the gypsum-based self-leveling ground cracks and cannot be completely repaired is well solved.

Description

technical field [0001] The invention belongs to the technical field of gypsum building materials, and in particular relates to a gypsum-based self-leveling repair mortar and a preparation method thereof. Background technique [0002] Gypsum-based self-leveling mortar is a kind of dry powder material specially used for indoor floor leveling, which is carefully prepared and mixed uniformly in the factory by high-strength gypsum, aggregate and various construction chemical additives. The corresponding product standard that my country has formulated is JC / T 1023-2007 "Gypsum-based self-leveling mortar". According to the different types of gypsum, the gypsum-based self-leveling cementitious materials mainly use α-semi-hydraulic high-strength gypsum, construction gypsum and anhydrite. [0003] The ground with gypsum-based self-leveling construction has accurate dimensions and high levelness. It is easy and convenient to operate, high in efficiency, and can be constructed by pumpi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/72
CPCC04B28/144C04B2111/72C04B2201/50C04B14/06C04B18/12C04B2103/22C04B2103/465C04B2103/0057C04B2103/50C04B2103/302
Inventor 宋涛赵松海王继敏杨杰张东东蔡文斌
Owner HENAN QIANGNAI NEW MATERIALS CO LTD
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