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A kind of reinforced mortar and preparation method thereof

A technology for strengthening mortar and cement mortar, applied in the field of cement, can solve the problems of unsatisfactory on-site construction, complicated equipment, high cost, etc., and achieve the effect of convenient and quick maintenance, easy operation and less pores

Active Publication Date: 2022-07-08
江西奇信集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional CO 2 The curing is a steam curing method, the equipment is complicated, the cost is high, and it can only be completed in the processing factory, which does not meet the needs of on-site construction

Method used

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  • A kind of reinforced mortar and preparation method thereof
  • A kind of reinforced mortar and preparation method thereof
  • A kind of reinforced mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] An embodiment of the present invention also provides a method for preparing the reinforced mortar as described above, which comprises the following steps:

[0038] Preparation of carbon dioxide releasing resin balls;

[0039] Prepare the cement mortar, mix carbon dioxide releasing resin balls and calcium carbonate powder into the cement mortar, stir, and obtain the reinforced mortar after a predetermined time.

[0040] When mixing, the added amount of the carbon dioxide releasing resin ball and calcium carbonate powder is in accordance with the aforementioned weight ratio. More preferably, the optimal addition amount of the carbon dioxide releasing resin ball is 7% of the weight of the cement mortar, and the optimal addition amount of the calcium carbonate powder is 6-10% of the weight of the cement mortar. More preferably, the calcium carbonate powder is the optimal addition amount. The addition amount is 10% of the weight of the cement mortar. The predetermined time...

Embodiment 1

[0048] The reinforced mortar preparation steps of the present embodiment are as follows:

[0049] 1. Mix calcium bicarbonate, acetic acid and water in a weight ratio of 10:15:50 to form a mixed solution;

[0050] 2. Put 200 mesh SAP superabsorbent resin particles into the mixed solution, stir evenly, and soak. When the SAP superabsorbent resin particles expand to 0.75-1.50mm, stop soaking to form carbon dioxide releasing resin balls.

[0051] Obtain carbon dioxide releasing resin balls for use. Then, according to the predetermined addition amount actually required, the carbon dioxide releasing resin ball and the plastering mortar are mixed. The details are as follows: 3 parts of carbon dioxide releasing resin balls and 100 parts of plastering mortar are mixed, and after a predetermined time, the reinforced mortar of Example 1 is formed.

[0052] Then, the reinforced mortar obtained in Example 1 was tested for various flexural strengths, and a list was recorded.

Embodiment 2

[0054] The reinforced mortar preparation steps of the present embodiment are as follows:

[0055] 1. Mix calcium bicarbonate, acetic acid and water in a weight ratio of 15:15:50 to form a mixed solution;

[0056] 2. Put 200 mesh SAP superabsorbent resin particles into the mixed solution, stir evenly, and soak. When the SAP superabsorbent resin particles expand to 0.75-1.50mm, stop soaking to form carbon dioxide releasing resin balls.

[0057] Obtain carbon dioxide releasing resin balls for use. Then, according to the predetermined addition amount actually required, the carbon dioxide releasing resin ball and the plastering mortar are mixed. The details are as follows: 5 parts of carbon dioxide releasing resin balls and 100 parts of plastering mortar are mixed, and after a predetermined time, the reinforced mortar of Example 2 is formed.

[0058] Then, various flexural strength tests were performed on the reinforced mortar obtained in Example 2, and a list was recorded.

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Abstract

The invention discloses a reinforced mortar and a preparation method thereof, wherein the reinforced mortar comprises cement mortar, carbon dioxide releasing resin balls and calcium carbonate powder. The carbon dioxide releasing resin ball includes superabsorbent resin particles and a carbon dioxide-containing aqueous solution absorbed in the superabsorbent resin particles, and the carbon dioxide-containing aqueous solution is generated by mixing and reacting acetic acid and an aqueous bicarbonate solution. By fixing carbon dioxide inside the mortar, the invention accelerates carbonization, thereby enhancing the mechanical strength of the mortar and improving the crack resistance of the mortar. In addition, calcium carbonate powder is also added, which can effectively accelerate the hydration of cement, improve the strength of the mortar, and at the same time have the effect of fixing carbon dioxide. Moreover, the preparation method of the reinforced mortar is simple, quick, convenient to use, and can be widely processed, prepared and used in various construction environments and processing plants.

Description

technical field [0001] The invention relates to the technical field of cement, in particular to a reinforced mortar and a preparation method thereof. Background technique [0002] The plastering mortar is affected by physical and chemical effects in the early stage, and shrinkage deformation will occur, mainly including chemical shrinkage, thermal shrinkage and dry shrinkage. In the actual process, plastering mortar is subject to various constraints, so internal tensile stress will be generated during shrinkage, and the early strength of plastering mortar is very low, resulting in early cracking. Therefore, in addition to adding appropriate amount of mineral admixtures, fibers, expansion agents, shrinkage reducing agents, improving the mix ratio, and strengthening maintenance in the plastering mortar, it is necessary to improve the early strength of the plastering mortar to resist tensile stress. The current common practice It is to add early strength agents, such as calciu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B24/26C04B40/02C04B22/10C04B24/04C04B14/28
CPCC04B28/00C04B40/0039C04B40/0231C04B2201/50C04B22/106C04B24/04C04B24/2641C04B14/28Y02W30/91
Inventor 方季屏潘微和艺祝正申
Owner 江西奇信集团股份有限公司
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