Novel prestressed duct grouting material and preparation method thereof

A technology of channel grouting and prestressing, which is applied in the field of civil engineering construction, can solve problems such as poor mechanical properties and durability, and achieve the effects of improving early strength and crack resistance, reducing pollution and increasing interfacial bonding force.

Pending Publication Date: 2022-07-29
湖北福嘉利建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new type of prestressed tunnel pressure slurry and its preparation method to solve the problem of poor mechanical properties and durability of the existing prestressed tunnel pressure slurry

Method used

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  • Novel prestressed duct grouting material and preparation method thereof
  • Novel prestressed duct grouting material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] This example provides a new type of prestressed pore-pressing slurry, which includes the following components in parts by weight: 62 parts of PO42.5 cement, 15 parts of phosphorus slag powder, 4 parts of rock cuttings, and 3.5 parts of coal gangue Powder, 6.5 parts of porous microsilica powder, 1.5 parts of polymer water absorbent resin, 0.4 parts of aminomethyl propanol, 0.4 parts of modified polyvinyl alcohol fiber, 4 parts of polycarboxylate superplasticizer, 1 part Emulsified silicone oil defoamer.

Embodiment 2

[0029] This example provides a new type of prestressed pore pressure slurry, which includes the following components in parts by weight: 64 parts of PO42.5 cement, 14 parts of phosphorus slag powder, 5 parts of rock cuttings, and 3 parts of coal gangue powder, 6.2 parts of porous microsilica powder, 1.3 parts of polymer water-absorbing resin, 0.3 parts of benzoic acid monoethanolamine, 0.3 parts of modified polyvinyl alcohol fiber, 3 parts of polycarboxylate superplasticizer, 0.8 parts of Polysiloxane defoamer.

Embodiment 3

[0031] This example provides a new type of prestressed pore-pressing slurry, which includes the following components in parts by weight: 65 parts of PO42.5 cement, 13 parts of phosphorus slag powder, 6 parts of rock cuttings, and 2.5 parts of coal gangue powder, 6 parts of porous microsilica powder, 1.2 parts of polymer water-absorbing resin, 0.2 parts of monoethanolamine benzoate, 0.3 parts of modified polyvinyl alcohol fiber, 3 parts of sulfamate water reducer, 0.5 parts of Emulsified silicone oil defoamer.

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Abstract

The invention discloses a novel prestressed duct grouting material and a preparation method thereof. The novel prestressed duct grouting material is prepared from the following components in parts by weight: 62 to 68 parts of cement, 10 to 15 parts of phosphorus slag powder, 4 to 8 parts of rock debris, 2 to 3.5 parts of coal gangue powder, 5 to 6.5 parts of porous silica fume, 1 to 1.5 parts of macromolecular water-absorbent resin, 0.1 to 0.4 part of corrosion inhibitor, 0.2 to 0.4 part of modified polyvinyl alcohol fiber, 2 to 4 parts of water reducing agent and 0.1 to 1 part of defoaming agent. According to the prestressed duct grouting material prepared by the invention, the recycling of solid wastes is realized, the pollution of the wastes to the environment is reduced, the problems of large shrinkage and low early strength of the grouting material after coagulation are effectively solved, and the aims of improving the safety, mechanical property and durability of the structure are fulfilled.

Description

technical field [0001] The invention belongs to the field of civil engineering construction, and in particular relates to a novel prestressed channel grouting slurry and a preparation method thereof. Background technique [0002] Compared with ordinary concrete, prestressed concrete structures are widely used in highways, bridges and civil construction projects in my country because of their advantages of high strength, good crack resistance, high stiffness, low self-weight and good durability. At present, most of the prestressed concrete components in our country usually need to reserve holes during processing in order to penetrate the prestressed steel bars during the construction process, and these reserved holes need to be filled with hole pressure slurry. As one of the key materials of prestressed concrete beams, the grouting material can protect the prestressed tendons from being exposed and corroded; it can effectively connect the concrete and the steel bars, ensure t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00017C04B2111/0075C04B2201/50C04B2201/52C04B18/12C04B18/145C04B16/0641C04B14/062C04B24/24C04B2103/302C04B24/42C04B24/12C04B24/122
Inventor 李义拉
Owner 湖北福嘉利建材科技有限公司
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