Testing method for working performance of concrete and apparatus implementing same

A technology of working performance and testing equipment, applied in the direction of material inspection products, etc., can solve the problems of inability to effectively distinguish differences, errors, and inapplicability, and achieve the effects of convenient and fast testing, reducing errors, and wide range

Active Publication Date: 2012-11-14
TONGJI UNIV
View PDF5 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-viscosity concrete, the above-mentioned test methods and instruments are usually unable to effectively distinguish the difference, or even not applicable a

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
  • Testing method for working performance of concrete and apparatus implementing same
  • Testing method for working performance of concrete and apparatus implementing same
  • Testing method for working performance of concrete and apparatus implementing same

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] Such as Figure 1~4 As shown, a test device for concrete work performance, the device includes a concrete slump tester 1, a circular extension table 2, a cement mortar fluidity test jump table 3, the concrete slump tester 1 is In the existing ordinary concrete slump tester, all operations before the slump cylinder is lifted and the jumping table is started to vibrate are exactly the same as the concrete slump test process;

[0031] The circular expansion table 2 is a cast steel table. The diameter can be set to 500-1200mm and the thickness is set to 2-5mm as required. In this embodiment, the circular expansion table 2 has a diameter of 800mm and a thickness of 3mm. The upper surface of the extended table 2 is provided with seven concentric ring notches 4, of which the diameter of the smallest ring notch is 200mm, and a concentric ring notch is added for every 100mm increase in the diameter. There are a total of eight radiation lines outside, and the angl...

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
Diameteraaaaaaaaaa
Angleaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a testing method for working performance of concrete and an apparatus implementing the same. The testing apparatus comprises a concrete slump tester, a cement mortar fluidity testing jumping table and a circular extending table. In similar testing of the slump of concrete disposed on a large table-board, the jumping table vibrates preset times according to certain frequency and certain vibration amplitude after a slump cylinder is hoisted, which enables the slump and flowing of the concrete to be improved and the concrete to form a circular truncated cone shape with a larger area; the slump H after vibration, the mobile extended diameter D of the concrete, center thickness h1 and edge thickness h2 after vibration are measured, the inclination angle theta of a frustum after slump of the concrete is calculated through conversion, bleeding and the segregation degree of the concrete are observed, and thus, working performance of the concrete can be comprehensively estimated. Compared with the prior art, the invention has the following advantages: working performance of fresh concrete can be conveniently and quickly tested and distinguished, and the method and the apparatus are applicable to a wide variety of concrete.

Description

technical field [0001] The present invention relates to a kind of performance test of freshly mixed concrete which can be used in the field of civil engineering, especially relates to a kind of concrete work performance test device which is suitable for relevant concrete preparation, concrete supply and concrete construction units, as well as concrete experiment teaching in colleges and universities. Background technique [0002] As the performance of concrete in civil engineering develops towards high strength, the fluidity of fresh concrete added with new admixtures becomes quite different from that of ordinary concrete. The instrument can no longer meet the testing needs of high-performance concrete. It is manifested in two aspects. One is that high-performance concrete usually shows a strong dry consistency, and on the other hand, this type of concrete can show good fluidity under vibration, so as to ensure that it can achieve concrete through vibration. Dense, which in...

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): G01N33/38
Inventor 李方元吴培峰沈殷
Owner TONGJI UNIV
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