Anti-cracking concrete for inverted siphon construction

A concrete and inverted siphon technology, applied in the field of concrete materials, can solve problems such as cracks, difficult repairs, and poor crack resistance

Inactive Publication Date: 2009-11-18
HEBEI RES INST OF INVESTIGATION & DESIGN OF WATER CONSERVANCY & HYDROPOWER
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing reinforced concrete inverted siphons at home and abroad have the disadvantages of poor crack resistance and difficult repair after cracks appear. Some reinforced concrete pipes are in a long-term working state with cracks.

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 Construction

[0008] The mixing ratio of the anti-crack concrete for inverted siphon construction provided by the present invention will be further described below.

[0009] Optimize the concrete mix ratio through tests and simulation calculations, adopt a reasonable water-binder ratio, increase water reducers, air-entraining agents, sand ratios, and high fly ash, etc., reduce cement consumption, and reduce hydration heat temperature rise. Reasonably select concrete raw materials, optimize concrete mix ratio, and take quality assurance measures in the process of concrete mixing, transportation, and pouring to prevent cracks. The quality and mix ratio of concrete raw materials determine the thermal and mechanical properties of concrete. It prevents cracks from two aspects: reducing the adiabatic temperature rise of concrete and improving the crack resistance. Including the selection of cement with low heat release, reducing the amount of cement to reduce the adiabatic temperature rise of con...

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

No PUM Login to view more

Abstract

The invention discloses a concrete material for inverted siphon construction in hydraulic engineering technique domain, which comprises the following steps: allocating ((kg / m3) 220-240kg cement, 55-60kg coal ash, 135-150kg water, 640-645kg sand with sand percentage at 33%, 655-660kg small stone with diameter at 5-20mm and 670-675kg middle stone with diameter at 20-40mm; choosing 0. 7% dehydragent and tenthousandth 0. 4 air-entrainer; getting the product. This invention provides concrete fitting ratio, which can prepare inverted siphon with good prevented cracking quality.

Description

Technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a concrete material for inverted siphon construction. Background technique [0002] The reinforced concrete inverted siphon has the advantages of convenient construction, low cost, and does not affect the flood discharge of the river. It has the characteristics of strong durability, convenient construction, small deformation, and small change in roughness. It is still widely used at home and abroad. However, reinforced concrete inverted siphons have poor crack resistance and are not easy to repair after cracks appear. No matter whether there are any cracks on the inverted siphon concrete pipe, longitudinal or horizontal, surface or through, wide cracks or micro cracks, it will affect The key to quality, but also engineering is not allowed. In order to prevent cracks, in the design of the inverted siphon, it is necessary to (1) reasonably select ...

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 Patents(China)
IPC IPC(8): C04B28/04C04B28/14C04B18/08C04B14/06C04B103/30
CPCY02W30/91
Inventor 顾辉高海成牛桂林王学广谢子书陈增峰景书达李春英王志刚郝坤赵彦波于良碧刘迪安崔福占张喜忠
Owner HEBEI RES INST OF INVESTIGATION & DESIGN OF WATER CONSERVANCY & HYDROPOWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap