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

Ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and preparation method thereof

A technology of sprayed concrete and groundwater, which is applied in the field of high-performance shotcrete mixed with mineral powder and its preparation, which can solve the problems of stagnation, incomplete adaptation, and inapplicability to underground water-sealed oil depots, etc., and achieves extended service life, low cost, and high bond strength Effect

Inactive Publication Date: 2013-03-20
WUHAN UNIV +1
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the regulations on sprayed concrete in these specifications still remain at an earlier technical level, and there is less consideration for current new technologies and new materials, so they are not fully suitable for existing new technologies. For example, the traditional shotcrete mix ratio and Not suitable for underground water-sealed oil depots

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
  • Ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and preparation method thereof
  • Ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and preparation method thereof
  • Ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034]The main raw materials are cement, mineral admixture, aggregate, water reducer, shrinkage reducer and accelerator. The cement is P.O.42.5 ordinary Portland cement. Mineral admixtures are S95 grade high-quality mineral powder and I grade fly ash. The S95 grade high-quality mineral powder adopted in this embodiment has a specific surface area of ​​450m 2 / kg, the 7-day activity index was 85%, the 28-day activity index was 108%, and the fluidity ratio was 103%; the water demand ratio of the Class I fly ash used in this example was 98%. The water reducing agent is a polycarboxylic acid type high-efficiency water reducing agent, and the theoretical water reducing rate is 25%; the accelerator is an alkali-free liquid accelerator, and the solid content is 38%. The dosage of the accelerator in this embodiment is 6% of the mass of the cementitious material, which is cement and mineral admixtures.

[0035] The shrinkage reducing agent is mainly composed of 20% by weight polyacry...

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
Specific surface areaaaaaaaaaaa
Particle sizeaaaaaaaaaa
Compressive strength valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and a preparation method thereof. The shotcrete disclosed by the invention comprises 267-370 kg / m<3> cement, 44-159 kg / m<3> ore powder, 0-140 kg / m<3> fly ash, 627-722 kg / m<3> stone, 855-962 kg / m<3> sand, 185-200 kg / m<3> water, 4.44-5.29 kg / m<3> high efficiency water reducing agent, 26.7-31.7 kg / m<3> alkali-free setting accelerator and 0-15.86 kg / m<3> shrinkage reducing agent. The shotcrete disclosed by the invention has the advantages of lower cost, lower shrinkage value, higher impermeability and favorable bonding property with rock; and the durability of the shotcrete as a permanent structural layer can be ensured.

Description

technical field [0001] The invention relates to a high-performance shotcrete used in permanent structures, in particular to a mineral powder-mixed high-performance shotcrete suitable for underground water-sealed oil depots and a preparation method thereof. Background technique [0002] Due to factors such as wars, uneven energy distribution, and geopolitics, the energy crisis has always been a major issue that governments need to consider. In the past 20 to 30 years, strategic oil reserves have received more and more attention in countries around the world. The underground water-sealed oil depot is the most popular form of oil reserves, based on the safety of the underground water-sealed oil depot, large storage capacity, small footprint, small investment, low loss, low pollution, low operation and management costs, fast loading and unloading, etc. With many advantages, it has been widely used in national strategic petroleum reserves and various commercial storages. As of 1...

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): C04B28/04
Inventor 赵晓何真高志华荣耀久蔡新华
Owner WUHAN UNIV
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