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Prevention and control method for fire high-temperature burst of ultra-high performance concrete, structural member and application

A concrete structure, ultra-high-performance technology, applied in the field of civil engineering, can solve the problems of the growth of mechanical properties at room temperature and the weak vapor pressure dissipation effect of ultra-high-performance concrete, and achieve the effects of easy promotion, low cost, and high safety

Pending Publication Date: 2020-09-22
SHANDONG JIANZHU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, the inventors found that this method has a weak effect on the dissipation of steam pressure inside ultra-high performance concrete, and the constant dry heat curing temperature of 150-300°C is not conducive to the growth of mechanical properties at room temperature

Method used

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  • Prevention and control method for fire high-temperature burst of ultra-high performance concrete, structural member and application
  • Prevention and control method for fire high-temperature burst of ultra-high performance concrete, structural member and application
  • Prevention and control method for fire high-temperature burst of ultra-high performance concrete, structural member and application

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Embodiment 1

[0054] For a specific implementation method of a method for preventing and controlling high-temperature bursting of ultra-high performance concrete fires, see Figure 7 , including the following steps:

[0055] Step 1: Prepare the required ultra-high performance concrete batching materials, including: cement, silica fume, slag powder, fly ash, fine sand, high-efficiency water reducer (such as polycarboxylate high-efficiency water reducer), steel fiber. The mass ratio is as follows, the water-binder ratio is 0.2, cement: silica fume: slag powder: fly ash: fine sand: superplasticizer solid content = 1:0.3:0.2:0.2:1.2:0.04; the volume of steel fiber is 2%.

[0056] The cement is P.O52.5 Portland cement produced by Shandong Shanshui Group; the silica fume is SiO produced by Weifang Tiancheng Building Materials Co., Ltd. 2 Superfine silica fume with a content of 92.17% and a specific surface area of ​​24200m 2 / kg; slag powder is S75 grade slag powder produced by Shandong Laiwu...

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Abstract

The invention relates to a prevention and control method for fire high-temperature burst of ultra-high performance concrete. According to the method, mainly, a high-temperature dry heat curing mechanism at 120 DEG C is adopted for curing, compared with high-temperature steam curing, high-temperature hot water curing and high-temperature steam pressure curing which are widely adopted at present, burst of ultra-high performance concrete under the action of high temperature and high stress of fire disasters can be completely restrained, energy consumption is low, and the method is environmentallyfriendly. The actual fire test proves that the prevention and control method for fire high-temperature burst of ultra-high performance concrete can effectively prevent the ultra-high-performance concrete burst in the fire, and has a positive effect on further popularization and application of the ultra-high-performance concrete.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a method for preventing and controlling high-temperature bursting of ultra-high-performance concrete. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Ultra-high performance concrete is a new type of green ultra-high performance concrete material, which is usually prepared by cement, active admixtures (such as silica fume, fly ash, pozzolan, slag), fine aggregate, high-efficiency water reducer and fiber, etc. made. [0004] Ultra-high performance concrete has ultra-high strength (100-800MPa), excellent durability and outstanding seismic energy dissipation performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/02C04B28/04C04B111/28C04B111/20
CPCC04B40/0263C04B28/04C04B2111/28C04B2111/20C04B18/146C04B18/141C04B18/08C04B14/068C04B2103/302C04B14/48
Inventor 闫凯秦昊胡岩松张鑫
Owner SHANDONG JIANZHU UNIV
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