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A kind of cement mortar additive and its preparation method and use method

A cement mortar and additive technology, applied in the field of cement mortar additives and its preparation, can solve the problems of high cost, corrosion of metal components, efflorescence and other problems, and achieve good crack resistance and freeze-thaw resistance, good crack resistance and freeze-thaw performance , the effect of improving the strength of the crystal structure

Active Publication Date: 2019-09-17
辽宁兆利高新路面材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are defects in the anti-freezing and thawing performance, especially in Northeast China, after freezing and thawing in winter and summer, some parts of the wellhead will fall off; due to the large amount of calcium oxide, there will be efflorescence during application, which will cause corrosion to metal components ; There is cracking phenomenon in the application process of mortar; In addition, due to the high content of fast-hardening sulfoaluminate cement used, the required brand is also high, and the content of active components of calcium oxide used is also high (greater than 90%), so the cost higher

Method used

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  • A kind of cement mortar additive and its preparation method and use method
  • A kind of cement mortar additive and its preparation method and use method
  • A kind of cement mortar additive and its preparation method and use method

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Experimental program
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Effect test

Embodiment 1

[0050] Under confirming that various raw materials and equipment dry state, take by weighing the active calcium oxide of 2.0kg (active calcium oxide mass content is 80%), the lignin amine (quaternary ammonium salt type) of 4.0kg, the amphoteric oxide of 6.0kg ( Al 2 o 3 ), 5.0kg of fiber (kapok fiber), 10.0kg of U-shaped expansion agent (specific surface area of ​​2800cm 2 / g), added to the mixing equipment and fully mixed uniformly to obtain the cement mortar additive A of the present invention, sealed and packaged. The process of preparing cement mortar dry powder with Additive A is as follows: Add 150.0kg of aluminate cement with a strength grade of 425, 160.0kg of Portland cement with a strength grade of 525, and 663.0kg of quartz sand to Additive A, and mix thoroughly Uniformly, obtain cement mortar dry powder A, seal packing. Mix and stir the dry mortar powder A and water evenly to obtain cement mortar. The ratio of cement mortar additives is shown in Table 1, and th...

Embodiment 2

[0052] After confirming the dry state of various raw materials and equipment, weigh 4.0kg of activated calcium oxide (the mass content of activated calcium oxide is 72%), 8.0kg of ligninamine (tertiary amine type), 10.0kg of amphoteric oxide (ZnO ), 9.0kg of fiber (polyester fiber), 27.0kg of U-shaped expansion agent (specific surface area is 3000cm 2 / g), added to the mixing equipment and fully mixed uniformly to obtain the cement mortar additive B of the present invention, which was sealed and packaged. The process of using Additive B to prepare cement mortar dry powder is as follows: Add 300.0kg of aluminate cement with a strength grade of 325, 200.0kg of Portland cement with a strength grade of 425, and 442kg of river sand to Additive B, and mix well , to obtain dry cement mortar powder B, which is sealed and packaged. Mix and stir the dry mortar powder B and water evenly to obtain cement mortar. The ratio of cement mortar additives is shown in Table 1, and the ratio of ...

Embodiment 3

[0054] After confirming the dry state of various raw materials and equipment, weigh 3.0kg of active calcium oxide (active calcium oxide mass content is 75%), 5.0kg of ligninamine (polyamine type), 8.0kg of amphoteric oxide (TiO 2 ), 6.0kg of fiber (asbestos fiber), 17.0kg of U-shaped expansion agent (the specific surface area is 2900cm 2 / g), added to the mixing equipment and fully mixed uniformly to obtain cement mortar additive C of the present invention, which was sealed and packaged. The process of preparing cement mortar dry powder with Additive C is as follows: Add 225.0kg of aluminate cement with a strength grade of 525, 180.0kg of Portland cement with a strength grade of 325, and 556kg of sea sand to Additive C, and mix well , to obtain dry cement mortar powder C, which is sealed and packaged. Mix and stir the dry mortar powder C and water evenly to obtain cement mortar. The ratio of cement mortar additives is shown in Table 1, and the ratio of mortar dry powder is s...

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Abstract

The invention discloses a cement mortar additive and a preparation method and use method thereof. The cement mortar additive comprises a swelling agent, fibers, amphoteric oxide, lignin amine and active calcium oxide. In use, the prepared cement mortar additive, sand, cement and water are stirred to be uniform, and then cement mortar is obtained. The cement mortar prepared by using the additive has the advantages of being high in early strength, resistant to crack, free of efflorescence and the like, the preparation cost is low, and the cement mortar prepared by using the additive can meet the requirements of the governance of urban street manholes and the rapid pavement repair of airfield runways and concrete pavements or culverts and further can meet the rapid construction requirements of secondary grouting of equipment foundations, foundation bolt reinforcement and the like.

Description

technical field [0001] The invention relates to a cement mortar additive and its preparation method and application method, in particular to a controllable quick-setting super early strength anti-cracking cement mortar additive. The cement mortar prepared by using the cement mortar additive is suitable for rapid treatment of sewer wells in urban streets, rapid repair of airports and cement pavements or bridge decks, secondary grouting of equipment foundations, reinforcement of anchor bolts, rapid construction or maintenance of tunnels or culverts, etc. Background technique [0002] Cement mortar or grouting material is mainly used in the fixing of corner bolts, machine base, steel structure and foundation interface, secondary grouting of equipment foundation, etc. Some projects require the cement mortar used to have the characteristics of rapid setting, rapid hardening, and early strength, especially for the fixing of corner bolts and the treatment of sewer wells. In order t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/24C04B28/06C04B111/70C04B111/72C04B111/20
Inventor 金晓铭
Owner 辽宁兆利高新路面材料有限公司
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