Analysis of the Existence of Size Effect on Different Concrete Types

Manić, Nazim; Tarić, Mirsad; Šerifi, Veis; Ristovski, Aleksandar

doi:10.1016/j.protcy.2015.02.054

Cited by 2 publications

(3 citation statements)

References 16 publications

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“…For comparison, Figures 7 and 8 present the fitting curves of size effect laws for the compressive and tensile Figure 7, the black curves and the scatter points indicated by " * " are obtained by equation (23) and the data in the fifth column of Table 5. e red curve and the green curve in Figure 7 indicate the lower boundary and the upper boundary obtained from equation (27).…”

Section: Improved Size Effect Lawmentioning

confidence: 99%

“…Additionally, some researchers used the artificial neural network (ANN) technique to forecast the size effect of concrete strength [21,22]. In these laws, the energetic size effect proposed by Bazant [11,[14][15][16][17][18][23][24][25][26][27][28][29] has been shown very effective and promising for those quasibrittle materials. Although much progress has been made in the size effect mechanism, much further research is needed for new type concrete and recycled aggregate concrete.…”

Section: Introductionmentioning

confidence: 99%

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Size Effect on Recycled Concrete Strength and Its Prediction Model Using Standard Neutrosophic Number

Peng

Yang

Qin

2021

Advances in Civil Engineering

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In recent years, research on recycled aggregate concrete has become a hot issue in the field of civil engineering. This paper mainly studies the size effects on compressive and tensile strengths of the recycled aggregate concrete. Firstly, four sets of recycled concrete cube specimens with different sizes are produced in the laboratory. Secondly, the experiments on compressive and tensile strengths are carried out to obtain the rules of the strength value with the change of the specimen size. Thirdly, a standard neutrosophic number is proposed and used in modelling the size effect law more reasonably. According to the experimental results, it was found that the compressive and tensile strengths of recycled concrete both have obvious size effects. In general, the strength value decreases gradually with the increase of specimen size. Using the standard neutrosophic number, the proposed new formula on size effect law is more suitable for tackling the indeterminacy in the experimental data. It has been shown that the size effect law based on the standard neutrosophic number is more realistic than the existing size effect law. The results may be useful for the engineering application of the recycled concrete and can be extended to other types of size effect laws in the future.

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Section: Improved Size Effect Lawmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Size Effect on Recycled Concrete Strength and Its Prediction Model Using Standard Neutrosophic Number

Peng

Yang

Qin

2021

Advances in Civil Engineering

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“…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

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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.

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Analysis of the Existence of Size Effect on Different Concrete Types

Cited by 2 publications

References 16 publications

Size Effect on Recycled Concrete Strength and Its Prediction Model Using Standard Neutrosophic Number

Size Effect on Recycled Concrete Strength and Its Prediction Model Using Standard Neutrosophic Number

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

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