Mine-used three-dimensional steel fiber reinforced flame-retardant concrete material
A technology of steel fiber and concrete, which is applied in the field of three-dimensional steel fiber reinforced flame-retardant concrete materials for mining, can solve the problems of incompetence and poor adaptability, achieve knot prevention, meet flame-retardant performance, and improve tensile strength Effect
Active Publication Date: 2016-08-17
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a mine-used three-dimensional steel fiber reinforced flame-retardant concrete material, which can solve the poor adaptability of the existing steel fiber concrete to the coal mine site and cannot fully meet the requirements of the coal mine steel fiber concrete support roadway The problem
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[0012] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0013] The embodiment of the present invention provides a mine-used three-dimensional steel fiber reinforced flame-retardant concrete material. The concrete material is made by mixing groups of three-dimensional steel fibers with concrete. The grouped three-dimensional steel fibers are made of flame-retardant hydrosol Several three-dimensional steel fibers of different lengths are connected, the diameter of each steel fiber is not more than 20mm, and the total volume of steel fibers accounts for 0.5% to 2% of the concrete material; t...
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Abstract
The invention discloses a mine-used three-dimensional steel fiber reinforced flame-retardant concrete material, which belongs to the field of mine-used concrete. The concrete material is made by mixing groups of three-dimensional steel fibers with concrete. The group of three-dimensional steel fibers is formed by connecting several three-dimensional steel fibers of different lengths with flame-retardant hydrosol. The diameter of each steel fiber is Not more than 20mm, the total volume of steel fibers accounts for 0.5% to 2% of the concrete material; the weight ratio of cement to sand in the concrete is 1:3 to 1:4, and the sand content of the concrete is not less than 50%, and the water-cement ratio is 0.4-0.45. After the flame-retardant hydrosol in this material is dissolved in water, the groups of steel fibers initially dispersed in the concrete can achieve secondary dispersion, increase the uniformity of the steel fibers, and effectively prevent knotting and other phenomena; the concrete standard meets industry standards. The material is suitable for popularization and use in coal mines in my country.
Description
technical field [0001] The invention relates to a mine-used concrete material, in particular to a mine-used three-dimensional steel fiber reinforced flame-retardant concrete material, which belongs to the technical field of coal mines. Background technique [0002] Coal is the main energy source in our country and occupies an important position in our country's economy. Especially in recent years, with the rapid development of our country's economy, the demand for coal has increased rapidly. A large amount of demand makes the mining intensity of coal mines continuously increase, and coal mines are gradually mined to the deep, and the high ground stress environment in the deep also puts forward higher requirements for the support of the roadway. At present, ordinary concrete is mostly used, but its strength is weak and it is difficult to meet the increasingly high support requirements. The steel fiber concrete material is an effective and economical method to solve the probl...
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IPC IPC(8): C04B28/04C04B14/48
Inventor 聂百胜李祥春孟筠青张辉
Owner CHINA UNIV OF MINING & TECH (BEIJING)