Effects of maximum aggregate size on fracture behaviors of self-compacting lightweight concrete

Karamloo, Mohammad; Mazloom, Moosa; Payganeh, Gholamhassan

doi:10.1016/j.conbuildmat.2016.07.061

Cited by 95 publications

(31 citation statements)

References 25 publications

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“…This is due to the improvement of the SCLC porosity in the high w/b ratio. This result is in line with those reported for NWSCC (Beygi et al 2013(Beygi et al , 2014 and SCLC (Karamloo et al 2016b). As shown in Table 6, are in good agreement with the previous findings (Mazloom et al 2004).…”

Section: Modulus Of Elasticitysupporting

confidence: 93%

“…Properties such as the compressive strength and durability of SCLC are comparable to normal weight self-compacting concrete (NWSCC) (Lachemi et al 2009). Therefore, the technical, environmental and economic advantages of SCLC encourage researchers to pay more attention to the significant features of this kind of concrete (Mazloom et al , 2018Karamloo et al 2016bKaramloo et al , 2017Salehi and Mazloom 2018a, b;Afzali-Naniz and Mazloom 2018;Mazloom and Yoosefi 2013).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the influence of micro- and nano-silica on the behavior of self-compacting lightweight concrete using full factorial design

Afzali-Naniz

Mazloom

2018

Asian J Civ Eng

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The effects of different replacement levels of micro-silica (MS), colloidal nano-silica (CS) and also the combined addition of MS and CS on the behavior of self-compacting lightweight concrete (SCLC) were studied using the general full factorial design method. Three factors, including water to binder ratio (w/b) with two levels of 0.35 and 0.45, CS with four replacement levels of 0, 1, 3 and 5%, and MS with two replacement levels of 0% and 10% were chosen and three tests were conducted for each response. The modulus of elasticity, compressive strength and water absorption were selected as the responses at the age of 28 days. Also, using multiple regression analysis, acceptable prediction regression models were derived. The analysis of variance (ANOVA) showed that the effects of all three factors on fresh and hardened properties of SCLCs were significant. The results displayed that the mentioned properties for the SCLC specimens containing MS or CS improved, but the best performance was obtained in ternary mixes which were created by adding both MS and CS simultaneously. The optimal condition for having the best result of SCLC was obtained when the amounts of MS and CS were 10% and 3%, respectively.

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Section: Modulus Of Elasticitysupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Assessment of the influence of micro- and nano-silica on the behavior of self-compacting lightweight concrete using full factorial design

Afzali-Naniz

Mazloom

2018

Asian J Civ Eng

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“…e coarse aggregate volume rate and the maximum particle size in concrete affect the fracture performance directly. e larger the volume rate and the maximum size of the coarse aggregate, the larger the average length and distribution width of the fracture path and the better the mechanical fracture property of concrete [28][29][30][31]. Figure 8 shows the distribution width of the fracture path for each specimen along the Y-axis in the local coordinate system of Figure 7(a).…”

Section: Fracture Pathmentioning

confidence: 99%

Mixed Mode I-II Fracture Path and Initiation Angle of Concrete at Mesoscale Level

Ren

Wang

et al. 2019

Advances in Materials Science and Engineering

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is paper presents the mesolevel numerical simulation and experimental verification of mixed mode I-II fracture for the four-point shearing beam with a single-side notch based on the concrete damaged plasticity (CDP) method and the Monte Carlo simulation (MCS) random aggregate method. And it discusses the influence of volume rate and maximum size of the coarse aggregate on the fracture path and the initiation angle of concrete mixed mode I-II fracture. e results show that the coarse aggregate has a significant influence on the distribution width, average length, and the dispersion degree of the fracture path, the distribution of which can be fitted by a normal distribution function. Also, the distribution width of the fracture path has a quadratic function relationship with the height along the failure direction. e distribution of coarse aggregates at the top of the reserved notch also has a significant influence on the initiation angle, which determines the initiation crack direction of mixed mode I-II fracture in concrete. e initiation angle distributes near the failure direction and follows a normal distribution function.

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“…Furthermore, the type of the coarse aggregate shape determines the compressive strength of concrete. The importance of coarse aggregate in designing and predicting the behaviour of SCC has been emphasised many times [7]. In comparison to normal concrete, the mix design of HPSCC is more difficult and should take into account adequate static and dynamic stability.…”

Section: Literature Surveymentioning

confidence: 99%

Comparative analysis of the coarse aggregate shapes used to manufacturing high performance self-compacting concrete

2018

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The influence of the shape of coarse aggregate on the properties of fresh concrete mixes, and the strength of high-performance self-compacting concrete (hPsCC) is important issue. In this study, irregular and regular grains were separated from the basalt, porphyry and granite coarse aggregate. The shape of these grains was determining using digital image analysis and was in accordance with the european standard [19]. The aspect ratio (ar) and roundness (r) were ascertained in order to highlight the differences in the coarse aggregate shape used the design hPsCC. The study indicates that using the same crushing system, varied parameters of the shape of coarse aggregates were obtained. It was determined that the best fitting distribution for aspect ratio and roundness at a 95% confidence level is the generalised extreme value distribution.

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Effects of maximum aggregate size on fracture behaviors of self-compacting lightweight concrete

Cited by 95 publications

References 25 publications

Assessment of the influence of micro- and nano-silica on the behavior of self-compacting lightweight concrete using full factorial design

Assessment of the influence of micro- and nano-silica on the behavior of self-compacting lightweight concrete using full factorial design

Mixed Mode I-II Fracture Path and Initiation Angle of Concrete at Mesoscale Level

Comparative analysis of the coarse aggregate shapes used to manufacturing high performance self-compacting concrete

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