Fiber-reinforced concrete material and preparation method thereof

A fiber reinforced, fiber material technology, applied in the field of fiber reinforced concrete materials and their preparation, can solve the problems of poor impact strength, short service life, poor overall strength, etc., and achieve good impact strength, uniform distribution, and bending strength. added effect

Inactive Publication Date: 2018-07-24
ANHUI YUTE CONCRETE STRUCTURE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, traditional reinforced concrete materials have problems such as poor corrosion resistance, difficult installation, poor water delivery capacity, poor sealing performance, and short service life, while plastic materials have problems such as poor overall strength, poor impact resistance, and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A fiber-reinforced concrete material in this embodiment is made of the following raw materials in parts by weight: 30 parts of modified bentonite, 10 parts of layered hypophosphite, 40 parts of Portland cement, 15 parts of fiber material, 10 parts of steel fiber, boric acid 5 parts, 5 parts of borax, 2 parts of enhancer, 2 parts of organic thickener, 80 parts of water;

[0023] Wherein, the fiber material is a polypropylene fiber with a length of 3 mm; the preparation method of modified bentonite comprises the following steps: S1, placing 2 parts of bentonite and 160 mL of absolute ethanol in a three-necked flask, and placing the three-necked flask in a 70° C. water bath Stir for 2 hours; S2, dissolve 2 parts of modifiers in deionized water at 60°C and pour them into the three-necked flask in step S1, adjust the pH of the solution to 3 with dilute nitric acid, stir for 5 hours, cool, filter, and then use 45% anhydrous Washing with water ethanol solution and deionized wa...

Embodiment 2

[0027] A fiber-reinforced concrete material in this embodiment is made of the following raw materials in parts by weight: 60 parts of modified bentonite, 26 parts of layered hypophosphite, 80 parts of Portland cement, 30 parts of fiber material, 18 parts of steel fiber, boric acid 10 parts, 10 parts of borax, 5 parts of enhancer, 6 parts of organic thickener, 160 parts of water;

[0028] Wherein, the fiber material is a mixture of polypropylene fiber, glass fiber and polyvinyl alcohol fiber with a length of 10 mm; the preparation method of modified bentonite comprises the following steps: S1, 4 parts of bentonite and 200 mL of absolute ethanol are placed in a three-necked flask , put the three-necked flask in an 85°C water bath and stir for 3 hours; S2, dissolve 6 parts of the modifier in 70°C deionized water and pour it into the three-necked flask in step S1, adjust the pH of the solution to 4 with dilute nitric acid, and then stir 6.5h, cooled, filtered, washed with 45% abso...

Embodiment 3

[0032] A fiber-reinforced concrete material in this embodiment is made of the following raw materials in parts by weight: 45 parts of modified bentonite, 18 parts of layered hypophosphite, 60 parts of Portland cement, 23 parts of fiber material, 14 parts of steel fiber, boric acid 7 parts, 7 parts of borax, 3.5 parts of enhancer, 4 parts of organic thickener, 120 parts of water;

[0033]Wherein, the fiber material is a mixture of polypropylene fiber, glass fiber, polyvinyl alcohol fiber and polyethylene fiber with a length of 6 mm; the preparation method of modified bentonite comprises the following steps: S1, mixing 3 parts of bentonite and 180 mL of absolute ethanol Place in a three-necked flask, and place the three-necked flask in a 78°C water bath to stir for 2.5 hours; S2, dissolve 4 parts of the modifier in 65°C deionized water and pour it into the three-necked flask in step S1, and adjust the pH of the solution with dilute nitric acid 4, then stirred for 6 hours, cooled...

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Abstract

The invention provides a fiber-reinforced concrete material and a preparation method thereof, and relates to the technical field of concrete materials. The fiber-reinforced concrete material is prepared from the following raw materials: modified bentonite, layered hypophosphite, silicate cement, a fiber material, steel fiber, boric acid, a reinforcing agent, an organic thickening agent and water.The fiber-reinforced concrete material provided by the invention is good in corrosion resistance, strong in sealing property, long in service life, good in strength and good in impact resistance; thebonding of the modified bentonite and the layered hypophosphite with a silicate cement matrix is good, and in the cement matrix, the modified bentonite and the layered hypophosphite are uniformly distributed and are good in dispersity; after the modified bentonite, the layered hypophosphite and the silicate cement are added to prepare the concrete material, the prepared concrete material is high in strength and good in heat stability; by embedding of the fiber material and the steel fiber into a silicate cement matrix, the comprehensive dynamic and mechanical properties such as impact resistance, anti-freezing property and durability of the concrete material are enhanced.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to a fiber reinforced concrete material and a preparation method thereof. Background technique [0002] Concrete is one of the most important building materials in contemporary times. It has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. These characteristics make it widely used, not only in various construction projects, but also in shipbuilding, machinery industry, marine development, geothermal engineering, etc. Concrete is also an important material. However, in the use of some high-load buildings, the excellent strength of concrete is required. At present, in order to increase the strength of concrete, scholars generally add fibers for reinforcement. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B22/16C04B16/06C04B14/48C04B20/02C04B14/42
CPCC04B28/04C04B14/42C04B14/48C04B16/0625C04B16/0633C04B16/0641C04B20/023C04B22/16C04B14/104C04B22/082C04B22/08C04B2103/0068C04B2103/44C04B22/002
Inventor 肖吕阳
Owner ANHUI YUTE CONCRETE STRUCTURE TECH
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