Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-strength pervious concrete and preparation method thereof

A permeable concrete and high-strength technology, applied in the field of building materials, can solve the problems of low compressive strength and a large number of structural cracks in concrete, and achieve the effect of improving fracture toughness, high hardness, compressive strength and crack resistance

Active Publication Date: 2021-09-07
北京民佳混凝土有限公司
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that although the ceramsite made of coal gangue is light in weight and has good air permeability, after the light permeable concrete is hardened, its compressive strength is low due to the large number of internal pores , when subjected to external force, a large number of structural cracks are prone to appear inside the concrete

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength pervious concrete and preparation method thereof
  • High-strength pervious concrete and preparation method thereof
  • High-strength pervious concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-5

[0045] In Preparation Example 1-5, boron carbide is selected from Hebei Yangming Metal Material Co., Ltd., the model is NYT-B4C-1, and the average particle size is 60nm; nano-titanium dioxide is selected from Jiangsu Tianxing New Material Co., Ltd., and the article number is A12; graphite powder Selected from Guangdong Yongyao Graphite Technology Co., Ltd., model is YY-04; alumina is selected from Zibo Yinhan Special Alumina Co., Ltd., model is A318.

preparation example 1

[0046] Preparation Example 1: (1) Dry 2kg boron carbide and 1kg nano-titanium dioxide at 110°C for 24h, then mix with graphite powder, mix at 50Pa, 1800°C for 2h under an inert atmosphere, cool to room temperature, graphite powder and nano The mass ratio of titanium dioxide is 3.5:1;

[0047] (2) Add 5kg of alumina to 10kg of deionized water, stir evenly, dry at 100°C for 4 hours, then raise the temperature to 200°C at a rate of 200°C / h, keep it warm for 1 hour, and then heat up at a rate of 175°C / h to 700°C, keep warm for 3 hours, cool down to room temperature, pulverize, and pass through a 60-mesh sieve to obtain spherical α-alumina particles;

[0048] (3) Mix the product of step (1) and step (2) evenly, grind at a speed of 200r / min for 5 hours, keep warm at 1450°C and 24MPa for 15 minutes, cool to room temperature, crush and sieve to obtain reinforced Agent, the mass ratio of step (1) gain and step (2) gain is 0.1:1.

preparation example 2

[0049] Preparation Example 2: (1) Dry 2.3kg of boron carbide and 1.15kg of nano-titanium dioxide at 110°C for 24h, then mix with graphite powder, mix at 60Pa and 1700°C for 1h under an inert atmosphere, cool to room temperature, and graphite powder The mass ratio to nano-titanium dioxide is 4:1;

[0050] (2) Add 5.5kg of alumina to 11kg of deionized water, stir evenly, dry at 110°C for 3.5h, then raise the temperature to 220°C at a heating rate of 220°C / h, keep it warm for 1h, and then dry at 190°C / h Raise the temperature to 750°C, keep it warm for 3 hours, cool down to room temperature, pulverize, and pass through a 60-mesh sieve to obtain spherical α-alumina particles;

[0051] (3) Mix the product of step (1) and step (2) evenly, grind at a speed of 250r / min for 4.5h, keep warm at 1500°C and 27MPa for 13min, cool to room temperature, crush and sieve to obtain The reinforcing agent, the mass ratio of the product of step (1) and the product of step (2) is 0.2:1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of building materials, and particularly discloses high-strength pervious concrete and a preparation method thereof. The high-strength pervious concrete comprises the following components in parts by weight: 200 to 240 parts of cement, 1300 to 1600 parts of coarse aggregate, 70 to 110 parts of mineral powder, 50 to 70 parts of fly ash, 8.5 to 25.2 parts of an additive, 100 to 125 parts of water, 5 to 10 parts of toughening fibers and 10 to 20 parts of a reinforcing agent; and each part by weight of the reinforcing agent is prepared from the following raw materials in parts by weight: 5-6 parts of aluminum oxide, 1-1.25 parts of nano titanium dioxide and 2-2.5 parts of boron carbide. The high-strength pervious concrete has the advantages of being large in pervious coefficient, high in compressive strength and breaking strength and high in heat resistance.

Description

technical field [0001] The application relates to the technical field of building materials, more specifically, it relates to a high-strength permeable concrete and a preparation method thereof. Background technique [0002] Pervious concrete is a new type of concrete that was born to compensate for the impermeability of ordinary concrete. It has water permeability and air permeability, and can alleviate urban waterlogging and heat island effects. Therefore, pervious concrete has received extensive attention as an environmentally friendly concrete. [0003] In the prior art, the Chinese invention patent document with the application number 201510805358.6 discloses a lightweight permeable concrete containing ceramsite. 3 As follows: mixing water 130-150, cement 410-450, ceramsite 990-1000, admixture 1.11-1.80, the ceramsite is coal gangue ceramsite with a particle size of 5mm-10mm continuous gradation, and the particle type is spherical. The bulk density grade of coal gangue...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/12C04B20/00
CPCC04B28/04C04B20/12C04B20/0068C04B2111/00284C04B2111/00008C04B2201/50C04B18/023C04B18/12C04B18/08C04B2103/302C04B2103/304C04B24/383C04B24/281C04B14/303C04B20/1066C04B20/1055C04B18/248C04B16/0633C04B14/024C04B24/04Y02W30/91
Inventor 谢玲丽
Owner 北京民佳混凝土有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com