NDLI: Mechanical behaviour of thermally damaged high-strength steel fibre reinforced concrete

Content Provider	Springer Nature Link
Author	Giaccio, G. M. Zerbi, R. L.
Copyright Year	2004
Abstract	The incorporation of steel fibres can compensate the inherently brittle behaviour of high strength concrete. This paper studies the residual mechanical behaviour of thermally damaged high strength steel Fibre Reinforced Concrete (FRC). The type and content of fibres were included as variables, a mortar and a normal strength fibre concrete were also tested. Two exposure conditions werre selected, I hour at 500°C and 24 hours at 150°C. FRC follow similar residual compressive behaviour as the plain concrete, but the presence of fibres lead to slight increase in strength and in the stress at which cracks initiate. Flexural tests on notched beams were performed (RILEM TC 162-TDF recommendation). It was found that the shape of the load-deflection curves in FRC exposed to 150°C was similar to the undamaged concrete. The reductions in flexural strength were lower in FRC than in plain concrete, and the equivalent post-peak strength was less affected than first-crack strength, showing the effect of fibre reinforcement. For the most severe exposure condition the degradation of the material is reflected by an increased non-linearity, nevertheless some FRC still exhibited a strengthening type behaviour and kept an almost constant load capacity during the post-peak.L'incorporation des fibres d'acier dans le béton peut compenser le comportement fragile du béton de haute résistance. Est étudié dans ce travail le comportement mécanique résiduel du béton de haute résistance renforcé de fibre d'acier (BRF) endommagé par la température. On a considéré comme variables le type et le dosage de fibres; et on a aussi étudié un mortier et un béton de résistance normale. On a adopté deux conditions d'exposition à haute température, 1 heure à 500°C et 24 heures à 150°C. Les bétons renforcés de fibres d'acier (BRF) présentent un comportement résiduel en compression identique à celui du béton normal, mais la présence de fibres produit un léger accroissement de la résistance à la compression et de la contrainte où la formation de fissures commence. On a réalisé des essais de traction en flexion dans des éprouvettes prismatiques entaillées (recommandation de la commission technique RILEM TC 162-TDF). Les courbes charge-déformation du BRF exposé à 150°C présentent la même forme que celles du béton de référence. Par rapport au béton normal, les BRF ont une réduction inférieure de la résistance en flexion; de plus, la résistance équivalente après pic a·été moins affectée que la résistance des premières fissures, mettant en évidence l'effet de la présence des fibres. On a trouvé un accroissement de la non-linéarité dans les échantillons plus endommagés, alors que les BRF présentaient toujours un comportement de renforcement et maintenaient une capacité de charge pratiquement constante pendant l'après-pic.
Starting Page	335
Ending Page	342
Page Count	8
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	38
Issue Number	3
e-ISSN	18716873
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Theoretical and Applied Mechanics Structural Mechanics Mechanical Engineering Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Seismic behaviour of steel fibre reinforced concrete piles

Shear behaviour of steel fibre reinforced concrete beams

Post-cracking behaviour of steel fibre reinforced concrete

Mechanical properties of steel fibre reinforced concrete exposed at high temperatures

Behaviour of round steel fibre reinforced concrete panels under point loads

High performance steel fibre reinforced concrete: residual behaviour at high temperature

Shear capacity of steel and polymer fibre reinforced concrete beams

Experimental study of static and cyclic behaviour of steel fibre reinforced high performance concrete)

Mixed mode fracture behaviour of steel fibre reinforced concrete

Mechanical behaviour of thermally damaged high-strength steel fibre reinforced concrete

Similar Documents

Seismic behaviour of steel fibre reinforced concrete piles

Shear behaviour of steel fibre reinforced concrete beams

Post-cracking behaviour of steel fibre reinforced concrete

Mechanical properties of steel fibre reinforced concrete exposed at high temperatures

Behaviour of round steel fibre reinforced concrete panels under point loads

High performance steel fibre reinforced concrete: residual behaviour at high temperature

Shear capacity of steel and polymer fibre reinforced concrete beams

Experimental study of static and cyclic behaviour of steel fibre reinforced high performance concrete)

Mixed mode fracture behaviour of steel fibre reinforced concrete

Mechanical behaviour of thermally damaged high-strength steel fibre reinforced concrete