Durable concrete and preparation method

A technology of durable concrete and sodium alginate, applied in the field of building materials, can solve the problems of easy generation of cracks, reduced use safety of concrete structures, poor durability, etc., and achieves the effects of improving strength, being beneficial to popularization and application, and preventing cracking.

Inactive Publication Date: 2018-12-07
张玉英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the concrete in the prior art is prone to cracks during construction and use, which leads to a decrease in the safety of the concrete structure and has the disadvantages of poor durability.

Method used

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  • Durable concrete and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Dissolve polypropylene and polyvinyl alcohol in dimethyl sulfoxide, add nano-silica and gallium trichloride to disperse to make a spinning solution, then perform electrospinning, and cut the obtained fibers into Short fibers, immersed in water to remove gallium trichloride, prepared polypropylene / polyvinyl alcohol composite porous fibers with nano-silica uniformly dispersed; the spinning voltage of electrospinning was 9V, the receiving distance was 16cm, and the diameter of the spinning hole was 300nm; the immersion time of fiber in water is 50min; in the spinning solution, 9 parts by weight of polypropylene, 7 parts by weight of polyvinyl alcohol, 2 parts by weight of nano silicon dioxide, 5 parts by weight of gallium trichloride, dimethyl Sulfone 77 parts by weight;

[0031] (2) Place the composite porous fiber prepared in step (1) in an aqueous solution of sodium alginate, perform ultrasonic treatment, then filter and dry to obtain a composite porous fiber adsorb...

Embodiment 2

[0034] (1) Dissolve polypropylene and polyvinyl alcohol in dimethyl sulfoxide, add nano-silica and gallium trichloride to disperse to make a spinning solution, then perform electrospinning, and cut the obtained fibers into Short fibers, immersed in water to remove gallium trichloride, prepared polypropylene / polyvinyl alcohol composite porous fibers with nano-silica uniformly dispersed; the spinning voltage of electrospinning was 8V, the receiving distance was 10cm, and the diameter of the spinning hole was 200nm; the immersion time of the fiber in water is 30min; in the spinning solution, 6 parts by weight of polypropylene, 5 parts by weight of polyvinyl alcohol, 1 part by weight of nano silicon dioxide, 4 parts by weight of gallium trichloride, dimethyl 84 parts by weight of sulfone;

[0035] (2) Place the composite porous fiber prepared in step (1) in an aqueous solution of sodium alginate, perform ultrasonic treatment, then filter and dry to obtain a composite porous fiber ...

Embodiment 3

[0038] (1) Dissolve polypropylene and polyvinyl alcohol in dimethyl sulfoxide, add nano-silica and gallium trichloride to disperse to make a spinning solution, then perform electrospinning, and cut the obtained fibers into Short fiber, immersed in water to remove gallium trichloride, prepared polypropylene / polyvinyl alcohol composite porous fiber with nano-silica uniformly dispersed; the spinning voltage of electrospinning was 12V, the receiving distance was 20cm, and the diameter of the spinning hole was 500nm; the immersion time of the fiber in water is 90min; in the spinning solution, 12 parts by weight of polypropylene, 8 parts by weight of polyvinyl alcohol, 3 parts by weight of nano-silicon dioxide, 8 parts by weight of gallium trichloride, dimethyl methylene Sulfone 69 parts by weight;

[0039] (2) Place the composite porous fiber prepared in step (1) in an aqueous solution of sodium alginate, perform ultrasonic treatment, then filter and dry to obtain a composite porou...

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Abstract

The invention belongs to the technical field of building materials and provides durable concrete and a preparation method. The preparation method comprises the following steps: preparing polypropylene/polyvinyl alcohol compound porous fibers where nano silicon dioxide is dispersed uniformly; then adsorbing sodium alginate; and uniformly mixing the mixture with cement, sand, macadam, a water reducer, an air entraining agent, calcium carbonate, glucolactone and water to prepare durable concrete. Compared with a conventional method, as the prepared durable concrete, polypropylene and polyvinyl alcohol organic fibers have tensile ductility and calcium alginate is formed, so that the interfacial bonding of organic fibers and inorganic concrete is good, the stress transfer speed is high, the shrinkage stress of the concrete which is hardened can be transferred, and the concrete is prevented from cracking, so that the concrete has good durability.

Description

technical field [0001] The invention belongs to the technical field of building materials and provides durable concrete and a preparation method thereof. Background technique [0002] Concrete has become the most widely used building material in today's world building structures because of its wide range of materials, low price, high compressive strength, and can be poured into various shapes. It has good fire resistance, is not easy to weather, and has low maintenance costs. With the development of social economy, the scale of construction in our country is increasing day by day. How to ensure the quality of construction projects and at the same time make the projects can be used safely for a long time has become more and more concerned by people from all walks of life. Therefore, the improvement of concrete quality has become a Important topics in the field of architecture. [0003] The main disadvantage of concrete is that it has poor tensile strength and is prone to cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B111/34
CPCC04B28/02C04B2111/343C04B2201/50C04B14/06C04B14/02C04B14/28C04B24/045C04B20/1022C04B16/0675C04B20/0056C04B24/34C04B2103/302C04B24/003C04B24/16
Inventor 张玉英
Owner 张玉英
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