Menu
Home
Log in / Register
 
Home arrow Engineering arrow Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International RILEM Workshop FRC-CREEP 2016
Source

Test Results

Single Fibre Pull-Out Rate Tests

These tests were done in order to determine whether there is a rate effect with regards to the pull-out load and also the pull-out displacement at the maximum load. The results for the 0.5 mm/s is shown as an example in Fig. 5a.

a the pull-out responses of the 0.5 mm/s tests, and b, the displacement at the maximum load resisted over the range of pull-out rates tested

Fig. 5 a the pull-out responses of the 0.5 mm/s tests, and b, the displacement at the maximum load resisted over the range of pull-out rates tested

The results show there is no change of maximum load resisted of the fibre during pull-out over the pull-out rate range from 0.25 цш/s to 2.5 mm/s. The pull-out displacement at maximum load was however affected by the loading rate and the pull-out at maximum load increased with 22 % from the highest to the lowest pull-out rate as can be seen in Fig. 5b. This gives rise to the hypotheses that stiffness of the interfacial transition zone (ITZ) between the fibre hooked-end and the matrix is affected by the loading rate, but the ITZ does not influence the strength capacity of the hooked-end. One can thus postulate that the ITZ “collapsing” at lower pull-out rates could be one of the causes of the fibre pull-out creep observed in the results shown in this paper.

 
Source
Found a mistake? Please highlight the word and press Shift + Enter  
< Prev   CONTENTS   Next >
 
Subjects
Accounting
Business & Finance
Communication
Computer Science
Economics
Education
Engineering
Environment
Geography
Health
History
Language & Literature
Law
Management
Marketing
Mathematics
Political science
Philosophy
Psychology
Religion
Sociology
Travel