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Fire preventing and extinguishing type strong reinforcing material for underground space filling, and preparation method and application thereof

An underground space and reinforcement material technology, which is applied in the direction of fire prevention equipment, etc., can solve the problems of lining fracture, fireproof and flame retardant lining easy expansion, reinforcement instability, etc., to achieve the effect of repairing cracks, improving fire extinguishing performance, and improving reinforcement

Active Publication Date: 2021-11-23
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fire-resistant and flame-retardant lining is easy to expand during the heating process, which will cause the lining to break and lose its heat-insulating and flame-retardant properties.
Therefore, in view of the fire problem in the underground space, as well as the instability and cracks caused by the reinforcement at the same time, we need to study materials suitable for fire prevention and reinforcement for filling the cracks in the underground space, so as to achieve better fire prevention and reinforcement. Purpose

Method used

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  • Fire preventing and extinguishing type strong reinforcing material for underground space filling, and preparation method and application thereof
  • Fire preventing and extinguishing type strong reinforcing material for underground space filling, and preparation method and application thereof
  • Fire preventing and extinguishing type strong reinforcing material for underground space filling, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 2g of guar gum and put it into a three-neck flask with 70ml of distilled water, and pass through nitrogen gas, and gelatinize at 80°C for 1.5h. After gelatinization, adjust the temperature to 60°C, add 8g of acrylic acid while stirring, and after it is completely dissolved, add 0.5g of cerium ammonium nitrate and keep the water bath heated; then add 1.5g of N-N methylenebisacrylamide, Mix and stir to dissolve for 1 hour, then pour it into the mixed material of 100g cement, 300g sand, 6g nano-silicon dioxide, 8g bentonite and 4g boric acid and stir to make it evenly mixed; The power ratio is set to 40% for vibration synthesis to obtain a fire-proof strong reinforcement material for underground space filling. Final test related performance.

Embodiment 2

[0036] Weigh 2g of guar gum into a three-neck flask with 70ml of distilled water, blow nitrogen into it, and gelatinize at 80°C for 1.5h. After gelatinization, adjust the temperature to 60°C, add 4g of acrylic acid while stirring, and then add 0.5g of cerium ammonium nitrate after it is completely dissolved, and keep the water bath heating; then add 1.5g of N-N methylenebisacrylamide, Mix and stir to dissolve for 1 hour, then pour it into the mixed material of 100g cement, 300g sand, 6g nano-silicon dioxide, 8g bentonite and 4g boric acid and stir to make it evenly mixed; The power ratio is set to 40% for vibration synthesis to obtain the fire-proof and extinguishing strong reinforcement material for underground space filling. Final test related performance.

Embodiment 3

[0038] Weigh 2g of guar gum into a three-necked flask with 70ml of distilled water and pass through nitrogen, and gelatinize at 80°C for 2h. After gelatinization, adjust the temperature to 30°C, add 8g of acrylic acid while stirring, and after it is completely dissolved, add 0.5g of cerium ammonium nitrate and keep the water bath heated; then add 1.5g of N-N methylenebisacrylamide, Mix and stir to dissolve for 1 hour, then pour it into the mixed material of 100g cement, 300g sand, 6g nano-silicon dioxide, 8g bentonite and 4g boric acid and stir to make it evenly mixed; The power ratio is set to 40% for vibration synthesis to obtain the fire-proof and extinguishing strong reinforcement material for underground space filling. Final test related performance.

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Abstract

The invention discloses a fire preventing and extinguishing type strong reinforcing material for underground space filling, and a preparation method and application thereof, and belongs to the technical field of building materials. The reinforcing material is prepared from, by mass, 0.2-0.6 part of guar gum, 0.8-2.0 parts of acrylic acid, 0.05-0.15 part of an initiator, 0.1-0.5 part of N-N methylene bisacrylamide, 15-25 parts of cement, 50-70 parts of sand, 2.0-3.0 parts of a reinforcing agent, 0.6-1.0 part of a fire extinguishing agent and 10-18 parts of water. The material greatly improves the reinforcing property and fire extinguishing performance, can better repair cracks, and absorbs a large amount of water to achieve a fire extinguishing effect.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a fire-proof and extinguishing strong reinforcement material for underground space filling, a preparation method and an application. Background technique [0002] At present, with the development of the city, people gradually develop into the underground space. There are many threats to underground space in the process of construction and operation. There are often problems such as underground space collapse caused by fire, which brings huge hidden dangers to people's safety and travel. Many countries and regions have begun to pay attention to the prevention and control of underground space fires due to the large number of casualties and huge economic losses caused by underground space fires. The underground space has the defects of narrow space and poor air circulation. When a fire breaks out in the underground space, the temperature and smoke accumulation cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00A62D1/00C08F251/00C08F220/06
CPCC04B28/00A62D1/0007C08F251/00C04B2111/28C08F220/06C04B24/04C04B24/38C04B24/124C04B14/06C04B14/104C04B14/062C04B22/0013C04B22/085
Inventor 周刚张欣远张琦牛琛茜李帅龙孟群智孙彪王凯丽王勇梅邢梦瑶
Owner SHANDONG UNIV OF SCI & TECH
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