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Self-leveling mortar and preparation process thereof

A technology of self-leveling mortar and quartz sand, which is applied in the field of mortar, can solve the problems of insufficient self-leveling wear resistance and the inability to use the surface layer of the floor directly, and achieve the effect of smoother surface, improved wear resistance and excellent performance

Inactive Publication Date: 2021-04-06
杭州康勋建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current self-leveling has the problem of insufficient wear resistance, so the current self-leveling mortar cannot be directly used as the surface layer of the floor

Method used

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  • Self-leveling mortar and preparation process thereof
  • Self-leveling mortar and preparation process thereof
  • Self-leveling mortar and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: a kind of self-leveling mortar,

[0046] Prepared from the following raw materials: aluminate cement (CA-50) 90kg, water reducer (HSB aliphatic superplasticizer) 5kg, leveling agent (powder sulfonated melamine) 4kg, defoamer (AT-720B Polyether defoamer) 2kg, modified quartz sand 70kg, emulsion additive 20kg, water 20kg.

[0047] The above-mentioned modified quartz sand is ethylenediamine modified quartz sand, and the particle size of the used quartz sand is 90 mesh; the emulsion additive is a mixed emulsion of 15kg acrylate emulsion and 5kg epoxy resin emulsion, and the epoxy value of the epoxy resin used is is 0.51, and the solid content of the emulsion additive after mixing is 40%.

[0048] The preparation process is as follows:

[0049] S1: Quartz sand modification: Soak the quartz sand in ethylenediamine, stir at 80r / min for 50min at a temperature of 70°C, and filter out to obtain modified quartz sand;

[0050] S2: Stir the acrylate emulsion and epo...

Embodiment 2

[0052] Example 2: A self-leveling mortar, the difference from Example 1 is that the dosage of each component, the performance parameters of the components and the process parameters of preparation are different, and the specific dosage and performance parameters of each component are shown in Table 1 .

[0053] The preparation process is as follows:

[0054] S1: Modification of quartz sand: Soak the quartz sand in ethylenediamine, stir at 75°C for 40min at a speed of 100r / min, filter out to obtain modified quartz sand;

[0055] S2: Stir the acrylate emulsion and epoxy resin emulsion at a speed of 250r / min for 8 minutes to obtain an emulsion additive;

[0056] S3: Preparation of mortar: Mix cement, water reducing agent, leveling agent, defoamer and modified quartz sand, and then add half of the total water consumption to the mixture for mixing to make the mixture viscous. Then add the emulsion additive and the remaining water, mix at 500r / min for 50s, reduce the stirring spee...

Embodiment 3-4

[0057] Embodiment 3-4: a kind of self-leveling mortar,

[0058] The difference from Example 1 is that methyl cellulose is added to the raw materials, and the specific dosage and performance parameters of each component are shown in Table 1.

[0059] Step S3 is changed to: preparation of mortar: mix cement, water reducing agent, leveling agent, defoamer, modified quartz sand and methyl cellulose, then add half of the total water consumption to the mixture for mixing, Make the mixture thick. Then add the emulsion additive and the remaining water, mix at 500r / min for 50s, reduce the stirring speed to 150r / min and continue stirring for 50s, obtained from leveling mortar.

[0060] The remaining process steps are the same.

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Abstract

The invention relates to the field of mortar, and particularly discloses self-leveling mortar and a preparation process thereof, and the self-leveling mortar is mainly prepared from the following raw materials by mass: 90-100 parts of aluminate cement; 5-6 parts of a water reducing agent; 4-5 parts of leveling agent; 2-2.5 parts of a defoaming agent; 70-75 parts of modified quartz sand; 20-25 parts of an emulsion additive; and 20-25 parts of water; wherein the modified quartz sand is ethylenediamine modified quartz sand; and the emulsion additive is a mixed emulsion of an acrylate emulsion and an epoxy resin emulsion, and the dosage ratio of the acrylate emulsion to the epoxy resin emulsion is 3: (1-2). The self-leveling mortar prepared in the invention has higher wear resistance and a smoother surface, and can be directly used as a surface layer of a terrace.

Description

technical field [0001] The present application relates to the technical field of mortar, in particular to a self-leveling mortar and a preparation process thereof. Background technique [0002] Self-leveling is a kind of functional building mortar. It has high fluidity and can be automatically leveled to form a flat surface, which reduces the difficulty of construction and saves a lot of manpower and material resources. Cement-based self-leveling materials have the characteristics of high strength, good fluidity, and good water resistance. They are widely used in grain depots, barns, dams, underground storage, and ground repair for water conservancy and hydropower. [0003] For example, a self-leveling mortar published in a Chinese patent application with the application number CN201811324513.2 includes the following raw materials: 18-23 parts of Portland cement, 7.5-12.5 parts of light-burned magnesium oxide, 35-44 parts of heavy calcium carbonate, 15-25 parts of calcium h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B40/00C04B20/02C04B24/28C04B24/26C04B14/06C04B24/38C04B18/08C04B111/20C04B111/62
CPCC04B28/06C04B40/0028C04B40/0039C04B20/023C04B20/02C04B2111/2038C04B2111/62C04B2103/302C04B24/16C04B24/32C04B14/06C04B24/2641C04B24/281C04B24/383C04B18/08Y02W30/91
Inventor 吴红英朱攀峰姚欢荣赵金标卢信敏徐璐胡爱爱
Owner 杭州康勋建设有限公司
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