Sleeve grouting material for steel bar connection of prefabricated building

A sleeve grouting and prefabricated technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as hidden quality problems of finished grouting materials, and achieve enhanced activation effect, improved mechanical strength, and improved The effect of fluidity

Active Publication Date: 2020-08-11
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented new type of cement composition improves its properties by incorporating tiny particles called microplastic or rubbery plaster (RP) instead of regular sand grains that are used for reinforcement purposes. These small particles help improve the flowability during placements while also making it easier to mix them properly when mixing water together at high temperatures. Additionally, these compositions have better chemical activated characteristics compared to traditional methods like Portland Cement. Overall, they make construction materials more durable, less expensive, stronger, lighter weight, longer lastings, safer from leaks caused due to corrosion over time, reducing greenhouse gas emissions associated with conventional hydraulic binders.

Problems solved by technology

Technological Problem: Current methods of joining structures such as reinforced concrete (RC) frames have limitations due to poor joint quality caused by insufficiently strong bolt connectors during construction. These issues include crack formation, failure under stress loads, and potential environmental hazards associated with current methods like epoxy resin mortgage systems.

Method used

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  • Sleeve grouting material for steel bar connection of prefabricated building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The sleeve grouting material provided in this embodiment includes the following components by weight: 820 parts of cement, 120 parts of waste concrete active micropowder, 950 parts of quartz sand, 60 parts of composite fiber, and 70 parts of admixture; wherein the waste concrete The active micro powder accounts for about 6% of the total amount of sleeve grout components.

Embodiment 2

[0043] The sleeve grouting material provided in this embodiment includes the following components by weight: 820 parts of cement, 100 parts of waste concrete active micropowder, 950 parts of quartz sand, 60 parts of composite fiber, and 70 parts of admixture; that is, the waste concrete The active micropowder accounts for 5% of the total amount of sleeve grout components.

Embodiment 3

[0045] The sleeve grout provided in this embodiment includes the following components by weight: 820 parts of cement, 143 parts of waste concrete active micropowder, 950 parts of quartz sand, 60 parts of composite fiber, and 70 parts of admixture; that is, the waste concrete The active micro powder accounts for about 7% of the total amount of sleeve grout components.

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Abstract

The invention discloses a sleeve grouting material for steel bar connection of a prefabricated building. The sleeve grouting material is prepared from the following components in parts by weight: 700to 900 parts of cement, 80 to 150 parts of waste concrete active micro powder, 800 to 1100 parts of quartz sand, 10 to 90 parts of composite fiber and 30 to 110 parts of an additive, the waste waste concrete active micro powder is prepared through adopting a special physical-chemical combined activation technology, so that the mechanical strength of the sleeve grouting material is obviously improved, and the fluidity of the grouting material is improved.

Description

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Claims

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Application Information

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Owner SHENYANG JIANZHU UNIVERSITY
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