| Full text | |
| Author(s): |
Cruz Borges, Leonardo Augusto
[1]
;
Monte, Renata
[1]
;
Strauss Rambo, Dimas Alan
[1]
;
de Figueiredo, Antonio Domingues
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Polytech Sch, Dept Construct Engn, Ave Prof Almeida Prado Trav 2 83, BR-05508901 Sao Paulo, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | CONSTRUCTION AND BUILDING MATERIALS; v. 204, p. 510-519, APR 20 2019. |
| Web of Science Citations: | 2 |
| Abstract | |
This paper presents an experimental investigation on the applicability of the novel double-edge wedge splitting (DEWS) testing technique to evaluate the mechanical properties of fiber reinforced concretes (FRCs) with low fiber content. This study aims to validate the DEWS test for the structural evaluation of FRCs with softening behavior, which is also considered by the design codes for structural applications. In this case, the occurrence of post-peak instability is critical. This instability could compromise the residual strength evaluation, especially for the serviceability limit state (SLS). The experimental studies focused on three main aspects affecting the DEWS test response: effect of test displacement rate, effect of fiber content, and orthotropy of FRCs. Two different groups of FRCs (reinforced with steel and macrosynthetic fibers) were mechanically evaluated, both at the SLS and ultimate limit state. The variation of the test displacement rate had no significant impact on the FRC post-cracking pattern. The DEWS test could detect behavioral variations induced by altering the fiber content and fiber orientation on both composites. This variation was more evident for higher crack opening levels because the post-peak instability may compromise the DEWS results in the SLS. (C) 2019 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 12/24281-6 - Evaluation of toughness of fiber reinforced concretes through the test method of notched specimens compression |
| Grantee: | Leonardo Augusto Cruz Borges |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 15/25457-9 - Effect of temperature on the in-situ and post-heating residual strength of FRC tunnel segments by means of Simplified Barcelona test |
| Grantee: | Dimas Alan Strauss Rambo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |