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High-tenacity high-anti-permeability high-durability concrete and preparation method thereof

A durable concrete and high-toughness technology, applied in the field of building materials, can solve the problems that the compressive strength is easy to achieve, the flexural strength, splitting tensile strength, flexural strength and anti-penetration are difficult to achieve and other durability indicators, so as to improve Thermal conductivity, uniform micro- and macro-structure, improved crack resistance

Active Publication Date: 2019-01-18
广州天达混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem at present is still that the compressive strength is easy to achieve, and the durability indicators such as flexural strength, splitting tensile strength, flexural tensile strength, cracks, and penetration resistance are difficult to achieve.

Method used

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  • High-tenacity high-anti-permeability high-durability concrete and preparation method thereof
  • High-tenacity high-anti-permeability high-durability concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Preparation method of C130 high toughness, high impermeability and high durability concrete

[0042] Step 1, put 980 parts of crushed stone, 505 parts of sand, 40 parts of silicon powder, 34 parts of boron nitride powder, 0.5 part of low-degree graphene oxide sheet powder, and 1.4 parts of high-strength polyvinyl alcohol fiber into the Into the mixer to make it fully mixed;

[0043] Step 2, adding 418 parts of cement, 34 parts of fly ash, 45 parts of steel slag powder and 17 parts of phosphorus slag powder into the mixture of step 1 in order to make it evenly mixed by mass parts;

[0044] Step 3: Mix 11.7 parts of dispersing activator, 17.6 parts of water reducing agent, 117.2 parts of modified graphene oxide dispersion liquid and 47.2 parts of water according to parts by mass and stir evenly to obtain a mixture;

[0045] Step 4: Slowly add the mixture prepared in Step 3 to the mixture prepared in Step 2 under stirring to obtain high-toughness, high-impermea...

Embodiment 2

[0067] Example 2: Preparation method of C140 high toughness, high impermeability and high durability concrete

[0068] Step 1, put 960 parts of crushed stone, 473 parts of sand, 40 parts of silicon powder, 35 parts of boron nitride powder, 0.7 part of low-degree graphene oxide sheet powder, and 1.5 parts of high-strength polyvinyl alcohol fiber into the Into the mixer to make it fully mixed;

[0069] In step 2, 425 parts of cement, 35 parts of fly ash, 47 parts of steel slag powder and 17 parts of phosphorus slag powder are added to the mixture of step 1 in turn and stirred to make it evenly mixed according to the number of parts by mass;

[0070] Step 3: Mix 12 parts of dispersing activator, 17.9 parts of water reducer, 119.6 parts of modified graphene oxide dispersion and 44.6 parts of water according to parts by mass and stir to obtain a mixture;

[0071] Step 4: Slowly add the mixture prepared in Step 3 to the mixture prepared in Step 2 under stirring to obtain high-tough...

Embodiment 3

[0073] Example 3: Preparation method of C150 high toughness, high impermeability and high durability concrete

[0074] Step 1, put 900 parts of gravel, 443 parts of sand, 41 parts of silicon powder, 37 parts of boron nitride powder, 1.0 parts of low-degree graphene oxide sheet powder, and 1.6 parts of high-strength polyvinyl alcohol fiber according to the number of parts by mass. Into the mixer to make it fully mixed;

[0075] Step 2, adding 432 parts of cement, 35 parts of fly ash, 49 parts of steel slag powder and 18 parts of phosphorous slag powder into the mixture of step 1 successively by mass parts and stirring to make it evenly mixed;

[0076] Step 3: Mix 12.2 parts of dispersing activator, 18.3 parts of water reducing agent, 122.2 parts of modified graphene oxide dispersion liquid and 36.7 parts of water according to parts by mass and stir evenly to obtain a mixture;

[0077] Step 4: Slowly add the mixture prepared in Step 3 to the mixture prepared in Step 2 under sti...

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Abstract

The invention discloses high-tenacity high-anti-permeability high-durability concrete and a preparation method thereof. The high-tenacity high-anti-permeability high-durability concrete comprises cement, coal ash, silica powder, steel slag powder, boron nitride, low-concentration oxidized graphene slice layer powder, phosphorus slag powder, sand, gravels, high-strength polyvinyl alcohol fibers, awater reducing agent, a dispersing excitant, modified oxidized graphene dispersion liquid and water. The prepared concrete has high-strength, high-tenacity, high-crack-resistance, high-anti-permeability and high-durability. A heat conductivity coefficient of the concrete is 3.63-3.75 W / (mK), a heat conductivity coefficient of 28 days of aged concrete is 4.62-4.67 W / (mK), compressive strength is 135.4-156.2 MPa, breaking strength is 21.5-23.9 MPa, splitting strength is 12.6-14.4 MPa, flexural strength is 15.4-19.6 MPa, and an anti-bending elastic modulus is 47.7-61.2 GPa. The prepared concreteis in comply with requirements of the C130-C150 high-performance long-durability concrete.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-toughness, high-impermeability, and high-durability concrete and a preparation method thereof. Background technique [0002] High-performance concrete with high toughness, high impermeability and high durability refers to high-performance concrete with a strength of C100-C150. This grade of concrete is mainly used in various high-rise buildings and high-grade road projects such as bridges, bridge piers, tunnels and hydroelectric power plants. Dams, airport runways, port terminals, offshore engineering, military facilities and nuclear power construction, etc., are the main concrete that is urgently needed and researched and developed in various engineering constructions. High-performance concrete refers to concrete with high workability, high volume stability and high durability. High workability means good fluidity and construction performance. High volume sta...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/26C08F283/06C08F220/06C08F220/46C08F292/00C08F226/06C08F220/20
CPCC04B24/2694C04B28/04C08F283/065C08F292/00C04B2201/50C04B2201/32C04B2111/00293C04B14/02C04B14/06C04B14/327C04B16/0641C04B18/08C04B18/12C04B18/0481C04B14/024C04B2103/302C08F220/06C08F220/20C08F226/06Y02W30/91
Inventor 吕生华习海涛刘锦茹孙立
Owner 广州天达混凝土有限公司
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