Postcracking residual strengths of fiber‐reinforced high‐performance concrete after cyclic loading

González, Dorys C.; Moradillo, Rosario; Mínguez, Jesús; Martínez, José Antonio Martínez; Cabrera, Miguel

doi:10.1002/suco.201600102

Cited by 34 publications

(27 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fatigue evaluation approach Pre-cracked cross section Compression Tension Flexural [21][22][23] x [24] x [24][25][26][27] x x [12,13,[36][37][38][28][29][30][31][32][33][34][35] x [9,[39][40][41] x x…”

Section: Referencementioning

confidence: 99%

“…Since cyclic load in cracked cross sections can be a governing design parameter, this must be investigated in terms of both applied fatigue load and respective number of cycles and of damage accumulation process since crack widths and loading bearing capacity evolution until failure are affected. Validation of the structural safety should consider values of crack opening correspondent to the expected fatigue life of the element during its service life [41].…”

Section: Referencementioning

confidence: 99%

See 1 more Smart Citation

Fatigue of cracked high performance fiber reinforced concrete subjected to bending

Carlesso

Fuente

Cavalaro

2019

Construction and Building Materials

View full text Add to dashboard Cite

High performance fiber reinforced concrete (HPFRC) is recognized as suitable material for structural applications. The number of national codes that have approved it is an evidence. Structures where HPFRC is generally used can be subjected to fatigue loads and are expected to resist millions of cycles during their service life. Cyclic loads affect significantly the characteristics of materials and can cause fatigue failures. The most demanded cross-sections being cracked under tensile stresses due to direct loads or imposed deformations. Commonly, publications report fatigue behavior of concrete under compression and are valid for uncracked sections. Imprecision in fatigue prescriptions are reflected through formulation of models that contemplate a probabilistic approach, or introduction of high safety coefficients within construction codes. The aim of the present research is to perform a structural design oriented analysis on the behavior of pre-cracked HPFRC subjected to flexural fatigue loads. Seven load levels were applied by means of three-point bending tests, considering an initial crack width accepted in the service limit state. Results showed that the monotonic load-crack opening displacement curve might be used as deformation failure criterion for HPFRC under flexural fatigue loading. The conducted probabilistic approach allows predicting the fatigue strength of HPFRC cracked sections.

show abstract

Section: Referencementioning

confidence: 99%

Section: Referencementioning

confidence: 99%

Fatigue of cracked high performance fiber reinforced concrete subjected to bending

Carlesso

Fuente

Cavalaro

2019

Construction and Building Materials

View full text Add to dashboard Cite

show abstract

“…Fibers bridge the cracks, resulting in a significant increase of the fatigue life. Much research has been carried out in this field [15][16][17][18][19][20][21], and in all cases, the results have shown a relevant improvement of the fatigue response of the concrete elements.…”

Section: Introductionmentioning

confidence: 99%

Plain and Fiber-Reinforced Concrete Subjected to Cyclic Compressive Loading: Study of the Mechanical Response and Correlations with Microstructure Using CT Scanning

Mínguez

Gutierrez²,

González

et al. 2019

Applied Sciences

Self Cite

View full text Add to dashboard Cite

The response ranges of three principal mechanical parameters were measured following cyclic compressive loading of three types of concrete specimen to a pre-defined number of cycles. Thus, compressive strength, compressive modulus of elasticity, and maximum compressive strain were studied in (i) plain, (ii) steel-fiber-reinforced, and (iii) polypropylene-fiber-reinforced high-performance concrete specimens. A specific procedure is presented for evaluating the residual values of the three mechanical parameters. The results revealed no significant variation in the mechanical properties of the concrete mixtures within the test range, and slight improvements in the mechanical responses were, in some cases, detected. In contrast, the scatter of the mechanical parameters significantly increased with the number of cycles. In addition, all the specimens were scanned by means of high resolution computed tomography, in order to visualize the microstructure and the internal damage (i.e., internal micro cracks). Consistent with the test results, the images revealed no observable internal damage caused by the cyclic loading.

show abstract

“…Some of the recent investigations conducted include the effect of fiber geometry and volume fraction on flexural response, effect of fiber dosage, aspect ratio, tensile strength and orientation, on flexural postcracking behavior, and residual strength of beam subjected to cyclic loading . Macrocrack propagation under sustained loading on beams and flexural residual strength of Steel Fiber Reinforced Concrete (SFRC) beams with multiple hooked‐end fibers has been investigated.…”

Section: Introductionmentioning

confidence: 99%

Influence of steel and polypropylene fibers on cracking due to heat of hydration in mass concrete structures

Saeed

Rahman

Baluch

2018

Structural Concrete

View full text Add to dashboard Cite

Steel and polypropylene fibers result in a significant enhancement in strength, ductility, and toughness of concrete. This paper investigates experimentally and numerically the effect of these fibers on heat of hydration and early‐age cracking in mass concrete structures. Experimental investigations were conducted on evolution of strength, Young's modulus, and adiabatic heat rise in fly ash concrete mixes with steel and polypropylene fibers. Concrete mixes with ordinary Portland cement, 40% fly ash replacing the cement, 40% fly ash with 0.3 and 0.5% steel fibers, and 40% fly ash with 0.3 and 0.5% propylene fibers were investigated. The evolution of compressive and tensile strength, modulus of elasticity, and adiabatic heat rise using semi‐adiabatic calorimeter for all mixes was measured. The evolution of temperature at several locations in two full‐scale mass concrete blocks with normal concrete and fly ash concrete was measured. A multiphysics‐based finite element simulation of the two field mass concrete blocks was carried out using the software DIANA FEA BV (South Holland, Netherlands), which predicted the heat generation, temperature field, stresses developed in the blocks, and the associated cracking with good accuracy. The effect of steel and polypropylene fibers on heat, temperature, and stress generation in mass concrete blocks was investigated using the experimentally obtained parameters. The polypropylene fibers result in significant performance enhancement for early‐age cracking compared with the steel fibers.

show abstract

Postcracking residual strengths of fiber‐reinforced high‐performance concrete after cyclic loading

Cited by 34 publications

References 24 publications

Fatigue of cracked high performance fiber reinforced concrete subjected to bending

Fatigue of cracked high performance fiber reinforced concrete subjected to bending

Plain and Fiber-Reinforced Concrete Subjected to Cyclic Compressive Loading: Study of the Mechanical Response and Correlations with Microstructure Using CT Scanning

Influence of steel and polypropylene fibers on cracking due to heat of hydration in mass concrete structures

Contact Info

Product

Resources

About