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

Ultra-high performance concrete prepared from modified volcanic limestone powder

A volcanic ash, ultra-high performance technology, applied in the field of building materials, can solve the problems of high quality, increase the preparation cost, limit the application scope of ultra-high performance concrete, etc., achieve high strength, promote ion dissolution, and improve competitiveness.

Active Publication Date: 2021-05-11
乌兰浩特市圣益商砼有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cementitious materials required for the preparation of ultra-high performance concrete are generally of high quality, which greatly increases the cost of preparation and limits the application range of ultra-high performance concrete in construction engineering.

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
  • Ultra-high performance concrete prepared from modified volcanic limestone powder
  • Ultra-high performance concrete prepared from modified volcanic limestone powder
  • Ultra-high performance concrete prepared from modified volcanic limestone powder

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] 3. Preparation of volcanic ash powder:

[0029] The volcanic ash powder of 3mm among the present invention is made by three-stage crushing, specifically comprises following three-stage crushing:

[0030] Step S1, putting the volcanic ash rock into a jaw crusher, and crushing the volcanic ash rock particles with a particle size of less than 300 mm.

[0031] Step S2, further crushing the volcanic ash particles obtained in step S1 with a cone crusher to obtain small volcanic ash particles with an average particle size of less than 30 mm.

[0032] Step S3, crushing the small volcanic ash particles obtained in step S2 into a volcanic ash powder with a particle size of 3 mm using a compactor.

[0033] The volcanic ash powder in the following examples are all prepared by the above method.

Embodiment 1

[0037] An ultra-high-performance concrete prepared by using modified volcanic ash powder, comprising the following components in parts by weight:

[0038]

[0039] After the above-mentioned components were mixed and stirred for 2-3 minutes, ultra-high performance concrete was obtained, and the ultra-high performance concrete obtained in this embodiment was subjected to performance tests of expansion degree, retention and compressive strength, and the performance test results were shown in the table 1.

[0040] Specifically, the surface area of ​​slag powder is 300-350m 2 / kg, water content not more than 1%, loss on ignition not more than 2%. The average particle size of silica fume is 1-3μm, and the bulk density is 1650-1750kg / m 3 ; Wherein, the mass of silica fume whose particle size is less than 1 μm is 80% of the mass of silica fume. The activity index of metakaolin is greater than 110, the loss on ignition is less than 0.7%, and the average particle size is 10-μm. Q...

Embodiment 2

[0045] An ultra-high-performance concrete prepared by using modified volcanic ash powder, comprising the following components in parts by weight:

[0046]

[0047]

[0048] After the above-mentioned components were mixed and stirred for 2-3 minutes, ultra-high performance concrete was obtained, and the ultra-high performance concrete obtained in this embodiment was subjected to performance tests of expansion degree, retention and compressive strength, and the performance test results were shown in the table 1.

[0049] Specifically, the surface area of ​​slag powder is 300-350m 2 / kg, water content not more than 1%, loss on ignition not more than 2%. The average particle size of silica fume is 1-3μm, and the bulk density is 1650-1750kg / m 3 ; Wherein, the mass of silica fume whose particle size is less than 1 μm is 80% of the mass of silica fume. The activity index of metakaolin is greater than 110, the loss on ignition is less than 0.7%, and the average particle size ...

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 sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses ultra-high performance concrete prepared from modified volcanic limestone powder. The ultra-high performance concrete is prepared from 52.5-grade Portland cement, modified volcanic limestone powder, slag powder, silica fume, metakaolin, quartz sand, a polycarboxylic water reducer, magnesium silicate, graphene oxide, polycarboxylic acid modified nano C-S-H and water. The modified volcanic limestone powder is utilized to enhance the characteristics of of the ultra-high performance concrete including good fluidity, high strength and low preparation cost, so that the popularity and market competitiveness of the ultra-high performance concrete prepared by the invention are favorably improved. Therefore, the ultra-high performance concrete prepared by the invention is concrete with high comprehensive performance.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an ultra-high performance concrete prepared by using modified volcanic ash powder. Background technique [0002] Ultra-high performance concrete, referred to as UHPC, is widely favored by engineering applications and concrete material researchers for its ultra-high mechanical strength, ultra-high toughness and excellent durability. At present, the research work related to ultra-high performance concrete, such as UHPC performance indicators, test methods, application technical regulations, and standards for premix products are being gradually implemented. It is expected that ultra-high performance concrete will usher in more vigorous development. [0003] The raw materials for preparing ultra-high performance concrete mainly include portland cement, silica fume, slag powder, fly ash, quartz sand, steel fiber and admixtures of strength grade 52.5 and above. Among them...

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
IPC IPC(8): C04B28/04C04B24/12C04B20/02C04B14/14
CPCC04B28/04C04B20/026C04B14/14C04B24/122C04B2201/50C04B18/141C04B18/146C04B14/106C04B14/06C04B2103/302C04B22/08C04B14/022C04B24/24Y02W30/91
Inventor 马跃飞高明星张皓孙振平冀言亮
Owner 乌兰浩特市圣益商砼有限公司
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