Evaluation of crack width in FRC structures and application to tunnel linings

Chiaia, Bernardino; Fantilli, Alessandro Pasquale; Vallini, Paolo

doi:10.1617/s11527-008-9385-7

Cited by 67 publications

(33 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fibers, as expected, led also to a reduction of mean crack spacing (Figure b) due to the stresses transfer by fibers at any concrete crack with provoke a reduction of transmission length ( l s,max ). This is accordance to previous works on steel fibers . This reduction seems to be linearly related to f R,1 and, therefore, it is not depending on fiber type.…”

Section: Resultssupporting

confidence: 92%

“…In reinforced concrete (RC) beams, fibers can be used as distributed reinforcement to enhance the response at both serviceability limit states (SLS) and ultimate limit states (ULS). In particular: at SLS, fibers can improve the crack control and deflection control by transferring stresses at crack (tension softening), leading to a more diffused crack pattern characterized by narrower and more closely spaced cracks as compared to RC beams without fibers; at ULS, fibers can be mainly used as shear reinforcement, as well as to increase in some cases the flexural bearing capacity . In fact, fiber effect on the flexural bearing capacity are either minor or important as a function of FRC toughness‐to‐longitudinal reinforcement ratio adopted.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of steel, glass and polymer fibers on the cracking behavior of reinforced concrete beams under flexure

Conforti

Zerbino

Plizzari

2018

Structural Concrete

View full text Add to dashboard Cite

The use of fibers can improve the behavior at serviceability limit states (crack and deflection control) and ultimate limit states (bearing capacity) of reinforced concrete (RC) elements under flexure. Fibers reinforcement provides a postcracking resistance, leading RC element to have a more diffused crack patterns characterized by narrower and more closely spaced cracks. Some doubts are instead related to RC element ductility, which can be affected by crack localization after rebar yielding. However, most of experiments present in literature relate only to elements in steel fiber reinforced concrete with significant residual strengths (f R,1 and f R,3 greater than 3.5-4.0 MPa). This paper aims to evaluate the influence of different fiber type (steel, glass, or polymer macrofibers) on the cracking and strength capacity of RC beams under flexure by using a broad range of Fiber Reinforced Concrete (FRC) toughness (1.6 ≤ f R,1 ≤ 5.1 MPa and 0.8 ≤ f R,3 ≤ 4.5 MPa). Twenty-one small scale RC beams with a typical value of longitudinal reinforcement ratio (0.87%) were tested under flexure. Crack and deflection control, as well as bearing capacity and crack localization were evaluated as a function of FRC toughness. Finally, results were compared against mean crack spacing and strength capacity predictions of fib Model Code 2010.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Influence of steel, glass and polymer fibers on the cracking behavior of reinforced concrete beams under flexure

Conforti

Zerbino

Plizzari

2018

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…Due to the reinforcement mechanisms provided by fibres bridging the crack surfaces, steel fibres have been used to enhance both the flexural and shear strength of concrete elements. In flexure, the presence of fibres decreases the crack width and the average crack spacing (Vandewalle 2000, Chiaia et al 2009 and increase the load carrying capacity at serviceability and ultimate limit states of structural members (Swamy and Al-Ta'an, 1981).…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Steel fibre reinforced concrete for elements failing in bending and in shear

Barros

Lourenço

Soltanzadeh

et al. 2013

European Journal of Environmental and Civil Engineering

View full text Add to dashboard Cite

Discrete steel fibres can increase significantly the bending and the shear resistance of concrete structural elements when Steel Fibre Reinforced Concrete (SFRC) is designed in such a way that fibre reinforcing mechanisms are optimized. To assess the fibre reinforcement effectiveness in shallow structural elements failing in bending and in shear, experimental and numerical research were performed. Uniaxial compression and bending tests were executed to derive the constitutive laws of the developed SFRC. Using a cross-section layered model and the material constitutive laws, the deformational behaviour of structural elements failing in bending was predicted from the moment-curvature relationship of the representative cross sections. To evaluate the influence of the percentage of fibres on the shear resistance of shallow structures, three point bending tests with shallow beams were performed. The applicability of the formulation proposed by RILEM TC 162-TDF for the prediction of the shear resistance of SFRC elements was evaluated. Inverse analysis was adopted to determine indirectly the values of the fracture mode I parameters of the developed SFRC. With these values, and using a softening diagram for modelling the crack shear softening behaviour, the response of the SFRC beams failing in shear was predicted.

show abstract

“…Noghabai [16] proposed an analytical model describing the behavior of tie-elements based on the observation of experimental tests. Physical analytical models predicting the behavior of FRC tension members were also recently proposed by other researches [17,18].…”

Section: Introductionmentioning

confidence: 99%

Cracking behavior in reinforced concrete members with steel fibers: A comprehensive experimental study

Tiberti

Minelli

Plizzari

2015

Cement and Concrete Research

105

View full text Add to dashboard Cite

Evaluation of crack width in FRC structures and application to tunnel linings

Cited by 67 publications

References 9 publications

Influence of steel, glass and polymer fibers on the cracking behavior of reinforced concrete beams under flexure

Influence of steel, glass and polymer fibers on the cracking behavior of reinforced concrete beams under flexure

RETRACTED ARTICLE: Steel fibre reinforced concrete for elements failing in bending and in shear

Cracking behavior in reinforced concrete members with steel fibers: A comprehensive experimental study

Contact Info

Product

Resources

About