Weibull modulus from size effect of high-performance fiber-reinforced concrete under compression and flexure

Nguyen, Duy‐Liem; Thai, Duc‐Kien; Ngo, Tri Thuong; Tran, Tuan-Kiet; Nguyen, Tri-Thong

doi:10.1016/j.conbuildmat.2019.07.234

Cited by 36 publications

(15 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For common concrete, the toughness in compression is much higher than the toughness in tension or flexure, and this can be attributed as concrete being strong under compressive loading but weak under tensile loading. With T c ranging from 46.92 to 77.88 MPa.% , the compressive toughness of the steel-slag concrete was lower than that of high-performance fiber-reinforced concrete about 1.5-3 times [34], and lower than that of ultra-high-performance fiber-reinforced concrete about 5-8 times [40]. Both Poisson's ratio and modulus of elasticity (MPa) were material parameters characterizing elastic performance.…”

Section: Dependence Of Compressive Strength On Testing Age Of Steel-smentioning

confidence: 99%

“…According to this law, the strength of brittle material is not constant, it is size-dependent: strength of a small specimen would be comparatively higher than that of a large specimen. The statistical approach of size effect can be visibly explained by a model of chain under tension and a model of brick stack under compression, as illustrated in Figure 10 [34]. According to these models, the large specimens have more elements thus, have a higher probability of defect elements resulting in breakdown [32].…”

Section: Statistical Approach About Size Effect On Compressive Strengmentioning

confidence: 99%

“…In general, time is the main influencing factor affecting the construction progress. (b) The scale effect of traditional concrete has been investigated for decades: the mechanical properties of traditional concrete were highly size and shape-dependent due to its brittle nature [31][32][33][34]. In compression, there have been two main different testing standards for compressive specimens using cubic shape or cylindrical shape.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on Compressive Characteristics of Steel-Slag Concrete

et al. 2020

Self Cite

View full text Add to dashboard Cite

The compressive characteristics of the steel-slag concrete were investigated through an experimental test. The term “steel-slag concrete” in this research work was defined as a kind of concrete using steel-slag material as a coarse aggregate replacement. Three types of the steel-slag concretes were examined under compression as follows: XT01, XT02, XT03 with their cement/water ratios of 1.76, 2.00, 2.21, respectively. The coarse aggregate used in producing concrete was steel-slag material, while the fine aggregate was traditional river sand; the ratio of coarse aggregate to fine aggregate was kept constant at a value of 1.98. Firstly, the age-dependent compressive strength of the steel-slag concretes were investigated up to one year; it was clear that the concrete strength increased rapidly in 7 days, then more and more slowly after that. Secondly, the modulus of elasticity and Poisson’s ratio of the steel-slag concretes were explored at the 28-day age. Thirdly, there was an important size and shape effect on the compressive strength of the XT02, and its significance of brittleness in failure was analytically analyzed. Lastly, the effects of water amount added in the XT02 on its compressive strength and slump were evaluated at the 28-day age.

show abstract

Section: Dependence Of Compressive Strength On Testing Age Of Steel-smentioning

confidence: 99%

Section: Statistical Approach About Size Effect On Compressive Strengmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on Compressive Characteristics of Steel-Slag Concrete

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the materials science literature, there is only one study on Bayesian interval estimation for the Weibull modulus: Simoa et al [50] proposed a new Bayesian method for determination of strength and crack growth using fatigue data from previous tests as prior information. The remaining studies in materials science are generally based on point estimation of for multiple purposes, such as investigating size effect of materials under different operational conditions [51] or understanding the statistical behavior of the strength of materials [52].…”

Section: Introductionmentioning

confidence: 99%

Bayesian Confidence Interval Estimation of Weibull Modulus Under Increasing Failure Rate

Yalçinkaya

Birgören

2021

Gazi University Journal of Science

View full text Add to dashboard Cite

show abstract

“…0.85-0.95 and is lower for lower strength concrete. The scale effect in the case of normal-weight concrete of different types-plain, ordinary, self-compacting, high strength and ultra-high strength (reactive powder concrete), fiber reinforced-was proven in numerous studies, e.g., [23][24][25][26][27][28][29][30][31][32][33][34]. There are two general conclusions resulting from this research concerning normal-weight concrete: (1) the higher the concrete strength, the lesser the scale effect; (2) the specimen slenderness is the crucial parameter determining the scale effect.…”

mentioning

confidence: 99%

Size Effect in Compressive Strength Tests of Cored Specimens of Lightweight Aggregate Concrete

Domagała¹

2020

Materials

View full text Add to dashboard Cite

The aim of this paper is to discuss the unrecognized problem of the scale effect in compressive strength tests determined for cored specimens of lightweight aggregate concrete (LWAC) against the background of available data on the effect for normal-weight concrete (NWAC). The scale effect was analyzed taking into consideration the influence of slenderness (λ = 1.0, 1.5, 2.0) and diameter (d = 80, 100, 125, and 150 mm) of cored specimens, as well as the type of lightweight aggregate (expanded clay and sintered fly ash) and the type of cement matrix (w/c = 0.55 and 0.37). The analysis of the results for four lightweight aggregate concretes revealed no scale effect in compressive strength tests determined on cored specimens. Neither the slenderness, nor the core diameter seemed to affect the strength results. This fact should be explained by the considerably better structural homogeneity of the tested lightweight concretes in comparison to normal-weight ones. Nevertheless, there were clear differences between the results obtained on molded and cored specimens of the same shape and size.

show abstract

Weibull modulus from size effect of high-performance fiber-reinforced concrete under compression and flexure

Cited by 36 publications

References 25 publications

Investigation on Compressive Characteristics of Steel-Slag Concrete

Investigation on Compressive Characteristics of Steel-Slag Concrete

Bayesian Confidence Interval Estimation of Weibull Modulus Under Increasing Failure Rate

Size Effect in Compressive Strength Tests of Cored Specimens of Lightweight Aggregate Concrete

Contact Info

Product

Resources

About