Abrasion resistance of alkali-activated slag concrete designed by Taguchi method

Mohebi, R; Behfarnia, Kiachehr; Shojaei, Mohammad Javad

doi:10.1016/j.conbuildmat.2015.08.128

Cited by 73 publications

(19 citation statements)

References 28 publications

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“… SiO 2 / Na 2 O ‐mole ratio and equivalent Na 2 O ‐content of the applied activator in the alkali‐activated slag ( AAS )‐concrete in comparison to literature references …”

Section: Precursor Materials and Concrete Compositionmentioning

confidence: 99%

Shrinkage and creep behavior of an alkali‐activated slag concrete

Dehn

2017

Structural Concrete

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In this paper, experimental results about the shrinkage and creep behavior of an alkali‐activated slag concrete (AAS‐concrete) are presented. The autogenous shrinkage of AAS‐concrete is pronounced at a relatively high water to binder ratio of 0.41. The ultimate value of autogenous shrinkage is determined to be higher than that of high‐strength concrete (HSC). The observed self‐desiccation at a later concrete age can be one of the reasons for the autogenous shrinkage. In a drying environment of 65% relative humidity AAS‐concrete exhibits a significantly higher total shrinkage compared to normal‐strength concrete composed of Portland cement. In the contrary to normal and HSC carbonation shrinkage must not be neglected for AAS‐concrete in the early concrete age. The sum of drying and carbonation shrinkage develops much more rapidly for AAS‐concrete in the first weeks after the beginning of drying. Based on the experimental results the shrinkage behavior of AAS‐concrete cannot be predicted by conventional models. The creep behavior of the AAS‐concrete was investigated under sealed and unsealed conditions. The creep coefficients for both conditions are higher than those calculated when using conventional models.

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“… SiO 2 / Na 2 O ‐mole ratio and equivalent Na 2 O ‐content of the applied activator in the alkali‐activated slag ( AAS )‐concrete in comparison to literature references …”

Section: Precursor Materials and Concrete Compositionmentioning

confidence: 99%

Shrinkage and creep behavior of an alkali‐activated slag concrete

Dehn

2017

Structural Concrete

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“…Taguchi method has been successfully used by various authors for similar purposes for various materials in civil engineering and other fields: Mohebi et al applied Taguchi method to design abrasion‐resistive, alkali‐activated slag concrete. Kumar et al used Taguchi method to optimize biodiesel production from Manilkara zapota (L.) seed oil. Tanyildizi et al applied Taguchi method to optimize the strength of polymer concrete. Panagiotopoulou et al applied Taguchi method to optimize the composition of alkali‐activated fly ash binders. Joshaghani et al used Taguchi method to design optimal mixture of pervious concrete pavement. Yuan et al used Taguchi method to design ternary activator‐activated slag to obtain optimal product properties. Onoue et al optimized the shock‐absorbing capability of lightweight concrete incorporating with volcanic pumice aggregate using Taguchi method; Bagheri et al used Taguchi method to optimize the compressive strength of geopolymers combined with fly ash and granulated blast furnace slag aggregates. …”

Section: Methodsmentioning

confidence: 99%

Optimizing the ultimate strength of precast reinforced concrete pipes in three‐edge bearing tests

Chao

Kuo

2017

Structural Concrete

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By utilizing Taguchi method, this paper presents a simplified approach that aims at developing technical recommendations of control factors of reinforcement and concrete for steel wire reinforced concrete pipes (SWRCP). For this purpose, the structural behaviors of full scale of 400 and 600 mm inside diameter SWRCPs were analyzed. Three control factors, namely wire diameter (dw), wire winding pitch (pw), and water/cement ratio of concrete (w/c of concrete) were designed in an L9 orthogonal array. The best possible levels were determined for maximization of crushing load (Fcr) and ultimate load (Fu) in three‐edge bearing tests and minimization of crack width (Wcr). Based on the results, the economical and optimal control factors of dw, pw, and w/c of concrete for SWRCPs with inside diameter of 400 mm are 6.5 mm, 100 mm, and 33.5%, respectively. For SWRCPs with inside diameter of 600 mm, the optimal control factors of dw, pw, and w/c of concrete are 6.5 mm, 33 mm, and 33.5%, respectively. In addition, by the use of analysis of variance, the contribution percentages of control factors were obtained and were used as the most effective factors on the Fcr, Fu, and Wcr for SWRCPs. Through the implementation of the study, this paper concludes a practical and significant overall idea of designing SWRCPs for pipe manufacturing industry.

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“…and Khayat 26 , Kang et al 22 for non-fibre reinforced concrete mixtures produced with conventional coarse aggregates (CA) of known rock types. For completeness, underwater test results in which the rock types used in the CA were insufficiently described as either natural gravel 49 , crushed stone 39,52,53 or marginal 54 aggregates were also considered. In the test data where mineralogical descriptions of CA have been provided, these can generally be categorised into basalt 3,19,25,31,47,48,50 , granite 19,26,48,51 , limestone 19,22,26 and dolomite .…”

Section: Sonebimentioning

confidence: 99%

Review of Concrete Resistance to Abrasion by Waterborne Solids

2020

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In the last four decades, numerous investigations have been undertaken on abrasion-erosion of concrete using various test methods. These have suggested existence of different abrasion mechanisms, limitations of existing test methods and inconsistencies on the importance of compressive strength to abrasion resistance of concrete. The objective of this review is to: understand the mechanisms of concrete abrasion-erosion, assess the suitability of existing test methods to simulate field conditions and investigate the relationship between abrasion resistance and compressive strength. It is found that concrete abrasion mechanisms are dependent on both transport modes of abrasive charge and the ratio of coarse aggregate to matrix hardness. The ASTM C1138 (underwater) test method appears to simulate all the critical modes of sediment induced abrasion expected in field conditions and specific energy can be used as a framework to correlate ASTM C1138 test results with field measurements. With the exception of concrete with rubber aggregates, abrasion loss is found to fit a simple power function of its compressive strength, and no significant improvements in abrasion resistance can be gained by using concretes with compressive strengths exceeding 60 MPa (8.70 ksi). Also, the influence of cementitious additives and coarse aggregate properties is only significant at compressive strengths below the optimal value of 60MPa (8.70 ksi).

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Abrasion resistance of alkali-activated slag concrete designed by Taguchi method

Cited by 73 publications

References 28 publications

Shrinkage and creep behavior of an alkali‐activated slag concrete

Shrinkage and creep behavior of an alkali‐activated slag concrete

Optimizing the ultimate strength of precast reinforced concrete pipes in three‐edge bearing tests

Review of Concrete Resistance to Abrasion by Waterborne Solids

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