Concrete creep testing system

A test system and concrete technology, which is applied in the direction of testing the ductility of materials, etc., can solve the problems of inapplicability of full-graded concrete compression and creep tests

Inactive Publication Date: 2011-11-09
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing test device is only suitable for small sp

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
  • Concrete creep testing system
  • Concrete creep testing system
  • Concrete creep testing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The technical solution in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0014] figure 1 Shown is a schematic structural view of the concrete creep test system of the present invention, the test system includes a machine base 1, a screw 2, a lower platen 3, an upper platen 4, a top plate 5, an electro-hydraulic servo actuator 6, and a specimen carrying device , Test piece bottom plate 9, strain gauge 11, pressure ball seat 12 and pressure ball head 13, load sensor 14 and disc spring 15.

[0015] The bottom of the lead screw 2 is fixed on the machine base 1, the top plate 5 is fixed on the top of the lead screw 2, the lower pressure plate 3 and the upper pressure plate 4 can move on the lead screw 2, for example, an adjustment nut 16 is arranged under the upper pressure plate 4, and the adjustment nut 16 can be rotated 16 can adjust the height of upper pressing plate 4 on the...

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 provides a concrete creep testing system, which comprises a base, a lead screw, a top plate, an electro-hydraulic servo actuator, a strain gauge, a load sensor and a disc spring, wherein the bottom of the lead screw is fixed on the base; the top plate is fixed at the top of the lead screw; a movable lower pressure plate and a movable upper pressure plate are arranged on the lead screw; the disc spring is arranged between the upper pressure plate and the top plate; the load sensor is arranged at the bottom of the upper pressure plate; the strain gauge is embedded into a test piece; and the electro-hydraulic servo actuator is arranged between the base and the lower pressure plate. According to the embodiment, counterforce loading is realized by adopting the disc spring at the upper part of the test piece, and the electro-hydraulic servo actuator for loading is adopted at the bottom of the test piece, so that the creep property of the full-grade concrete can be directly measured, the creep property of the full-grade concrete is reflected truly, and the engineering design is safer and more reliable, economic and reasonable.

Description

technical field [0001] The invention relates to a concrete creep test system. Background technique [0002] Concrete creep is the phenomenon that the deformation of concrete structures increases with time under continuous load. Creep often changes the stress of concrete buildings, structures or long-span bridges, causes large deformation of the structure, cracks the concrete structure, and even eventually fails. Therefore, it is particularly important to conduct creep tests on concrete. [0003] The existing test method is to wet-screen fully graded concrete to remove particles with an aggregate particle size greater than 40mm, and then form a small cylindrical specimen of φ150mm×450mm or φ200mm×600mm, and the test results are calculated to represent the whole grade. The creep characteristics of mass concrete, but after the concrete is wet screened, the content of coarse aggregate is reduced from about 70% to about 30%, the content of mortar is richer, and the material com...

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): G01N3/28
Inventor 肖汉江杨华全王述银李家正王迎春肖开涛戴春芳董芸严建军彭尚仕林育强周世华石妍张亮苏杰罗平黄安义
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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