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

Standard concrete fine aggregate and preparation thereof

A technology of concrete and fine aggregate, applied in the field of building materials, can solve the problems of a large number of antioxidants and high cost

Inactive Publication Date: 2008-08-27
福州海旺建材有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this method will obtain better effect, often needs a large amount of anti-oxidants, and the cost is higher.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: This embodiment takes the preparation of 1000 tons of concrete fine aggregate as an example.

[0020] Get 800 tons of sand (sand is the mixture of coarse, medium and fine sand, fineness modulus FM=1.8-3.6), 199 tons of tuff lava (ie gravel), and 1 ton of calcium nitrite as antioxidant.

[0021] When preparing, put the mixed sand and gravel into the conveyor belt through the hopper, and the conveyor belt sends the material to the top of the crusher that rotates at a high speed (the speed of the motor rotor is 45-65 rpm), and the material passes through the crusher. The top of the material passes through the crusher and falls into the bottom of the crusher. When the material passes through the crusher, it is crushed and processed. When the crusher is crushing, add a 3% calcium nitrite solution and mix it uniformly to obtain the present invention. Concrete fine aggregate described above.

Embodiment 2

[0022] Embodiment 2: This embodiment takes the preparation of 1000 tons of concrete fine aggregate as an example.

[0023] Get 900 tons of sand (sand is the mixture of coarse, medium and fine sand, fineness modulus FM=1.8-3.6), 90 tons of quartzite (ie gravel), and 10 tons of sodium nitrite as antioxidant.

[0024] When preparing, put the mixed sand and gravel into the conveyor belt through the hopper, and the conveyor belt sends the material to the top of the crusher that rotates at a high speed (the speed of the motor rotor is 45-65 rpm), and the material passes through the crusher. The top of the material passes through the crusher and falls into the bottom of the crusher. When the material passes through the crusher, it is crushed and processed. When the crusher is performing crushing work, add 3% sodium nitrite solution and mix it uniformly to obtain the present invention. Concrete fine aggregate described above.

Embodiment 3

[0025] Embodiment 3: This embodiment takes the preparation of 1000 tons of concrete fine aggregate as an example.

[0026] Get 490 tons of sand (sand is the mixture of coarse, medium and fine sand, fineness modulus FM=1.8-3.6), 500 tons of volcanic ash (ie gravel), and 10 tons of chromate as antioxidant.

[0027] When preparing, put the mixed sand and gravel into the conveyor belt through the hopper, and the conveyor belt sends the material to the top of the crusher that rotates at a high speed (the speed of the motor rotor is 45-65 rpm), and the material passes through the crusher. The top of the material passes through the crusher and falls into the bottom of the crusher. When the material passes through the crusher, it is crushed and processed. When the crusher is crushing, add a 3% concentration of chromate solution and mix evenly to obtain the chromate solution of the present invention. Concrete fine aggregate described above.

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
Login to View More

Abstract

The invention relates to standard concrete fine aggregate and a process for preparation, which belongs to the building materials field. Sand takes 49%-90%, gravels take 9%-50%, the gravels are non-active rocks, and the grain diameter of the gravels is smaller than 10mm, the mixed sand and gravels is dropped in a conveyer belt, the conveyer belt sends the materials to a crusher which rotates in high speed to crush and process, when the crusher is working, 0.005%-1% basic organic components is added as antioxidant in proportioning by weight, and then the concrete fine aggregate of the invention can be obtained by mixing the mixture uniformly. The invention effectively inhibits alkali-aggregate reaction of the concrete, increases the strength of the concrete, has extremely fine passivation, rust-resistance and protective effect to reinforcing steel bars, and prolongs the service life of buildings.

Description

【Technical field】 [0001] The invention relates to standard concrete fine aggregate and a preparation method thereof, belonging to the field of building materials. 【Background technique】 [0002] With the development of society, the requirements for modern architectural modeling and architectural design are getting higher and higher. At the same time, many conditions have been put forward for the concrete building structure itself. However, in practice, we have also found that the biggest defect of concrete is that it is easy to crack. These cracks are constantly generated and expanded under the external physical and chemical effects, causing concrete carbonation, peeling off of the protective layer, and corrosion of steel bars, which weakens the strength of concrete and reduces its durability. In severe cases, collapse events even occur, endangering the normal use of the structure. There are many reasons for cracks in concrete structures, and all factors can be attributed t...

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): C04B14/06C04B14/02
Inventor 蔡德明
Owner 福州海旺建材有限公司
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