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Marine concrete reinforcing material as well as preparation method and application thereof

A technology for marine concrete and reinforced materials, applied in chemical instruments and methods, inorganic chemistry, calcium/strontium/barium compounds, etc., can solve problems such as aggregate denudation and steel bar corrosion, reduce consumption, improve engineering durability, The effect of preventing the intrusion of corrosive ions

Inactive Publication Date: 2020-08-28
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been found that many coastal concrete structures such as seaports, bridges, and wharves have premature aggregate erosion and steel corrosion before reaching the design period, and have to be repaired or even demolished and rebuilt

Method used

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  • Marine concrete reinforcing material as well as preparation method and application thereof

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Effect test

Embodiment 1

[0019] A marine concrete strengthening material, comprising porous microspheres, Bacillus lysinus, sodium alginate, soluble barium silver salt, the porous microspheres are composed of calcium carbonate, sodium dodecylsulfonate and ferric oxide particles Composition, calcium carbonate is used as the main body of porous microspheres, sodium dodecyl sulfonate and ferric oxide particles are uniformly distributed in calcium carbonate porous microspheres; lysine is loaded in the pores of the porous microspheres and on their surfaces Bacillus; the surface of the porous microsphere is coated with a shell made of sodium alginate and soluble barium silver salt. Use the above materials to replace the aggregate in the concrete, and the replacement ratio is 1%.

Embodiment 2

[0021] A marine concrete strengthening material, comprising porous microspheres, Bacillus lysinus, sodium alginate, soluble barium silver salt, the porous microspheres are composed of calcium carbonate, sodium dodecylsulfonate and ferric oxide particles Composition, calcium carbonate is used as the main body of porous microspheres, sodium dodecylsulfonate and chromium dioxide particles are evenly distributed in calcium carbonate porous microspheres; lysine spores are loaded in the pores of the porous microspheres and on their surfaces Bacillus; the surface of the porous microsphere is coated with a shell made of sodium alginate and soluble barium silver salt. Use the above materials to replace the aggregate in the concrete, and the replacement ratio is 8%.

Embodiment 3

[0023] A marine concrete strengthening material, comprising porous microspheres, Bacillus lysinus, sodium alginate, soluble barium silver salt, the porous microspheres are composed of calcium carbonate, sodium dodecylsulfonate and ferric oxide particles Composition, calcium carbonate is used as the main body of porous microspheres, sodium dodecyl sulfonate and ferric oxide particles are uniformly distributed in calcium carbonate porous microspheres; lysine is loaded in the pores of the porous microspheres and on their surfaces Bacillus; the surface of the porous microsphere is coated with a shell made of sodium alginate and soluble barium silver salt. Use the above materials to replace the aggregate in the concrete, and the replacement ratio is 10%.

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Abstract

The invention discloses a marine concrete reinforcing material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a calcium chloride solution and a sodium bicarbonate solution with equal mole to prepare porous calcium carbonate microspheres; inoculating lysinibacillus sp. into a culture medium, and adding a spore efficient transforming agent into a culture solution; putting the calcium carbonate microspheres into the lysinibacillus sp. spore culture solution, and fully standing until the concentration of the spore culture solution tends to be stable, so as to obtain calcium carbonate microspheres loaded with microbial spores; dissolving the calcium carbonate microspheres loaded with the microbial spores into a mixed solution of sodium alginate and a barium-silver compound, uniformly stirring, and coating the surface layers of the calcium carbonate microspheres through spray drying. Results show that the material canachieve concrete surface pore filling and plugging, improve compactness, prevent invasion of corrosive substances, improve engineering durability and prolong the service lifetime.

Description

technical field [0001] The invention belongs to the field of cement material modification, and relates to a marine concrete reinforcement material and a preparation method and application thereof. Background technique [0002] The ocean is a treasure trove for human survival, providing abundant resources for human beings, and also plays a vital role in regulating the earth's environment. With the continuous deepening of China's opening to the outside world and sustained economic growth, the demand for the shipping market has become increasingly strong. In order to meet the strong demand of the market and promote the stable development of the national economy, a large number of berths have been newly built in my country's coastal ports, and a large number of cross-sea bridges and coastal buildings have been built at the same time. Cement concrete is the most common construction material in modern marine engineering. Compared with ordinary concrete, marine concrete faces a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/02C04B20/10C04B14/28C01F11/18C04B28/00C04B111/24
CPCC01F11/18C01F11/185C04B20/02C04B20/1055C04B20/1048C04B14/28C04B28/00C04B2111/24C04B2103/0001
Inventor 詹其伟
Owner JIANGSU UNIV OF SCI & TECH
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