Evaluation of the Modulus of Elasticity of Different Types of Concrete Compared with Eurocode 2

Křížová, Klára; Hela, Rudolf

doi:10.4028/www.scientific.net/kem.677.181

Cited by 3 publications

(3 citation statements)

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“…It was observed that with an increase in the concrete grade of GPC, the observed difference was higher (see Figure 5(a) at 50 MPa, for instance). Regarding Figure 5(b) for comparison with empirical equations in the literature, similar observations could be deduced when comparing with Al-Amawee et al 57 Malaikah, 58 Nematzadeh and Naghipour, 59 Pintea and Onet, 60 Ispir et al, 61 Křížová and Hela, 62 Jones and McCarthy, 63 Chitrala et al, 29 and Carrasquillo et al 66 However, the values of elastic modulus of GPC in this study were higher than those measured by Swaddiwudhipong et al, 64 Lizarazo et al, 65 Diaz, 67 Cui et al, 68 and Hardjito et al 69 The difference might come from the composition of the substances in the fly ash-based GP binder or the elastic modulus of aggregates.…”

Section: Resultssupporting

confidence: 80%

“…Various models were proposed to estimate the elastic modulus of concrete in function of the cylindrical compressive strength, including standards such as AS 3600, 49 AIJ, 50 ASSHTO 2007, 51 ACI 363-11, 52 EN 2004, 53 NZS 3101, 54 CSA A23.3, 55 NS 3473, 56 or empirical equations such as the ones proposed in Al-Amawee et al 57 Malaikah, 58 Nematzadeh and Naghipour, 59 Pintea and Onet, 60 Ispir et al 61 Křížová and Hela, 62 Jones and McCarthy, 63 Swaddiwudhipong et al 64 Lizarazo et al 65 Chitrala et al, 29 Carrasquillo et al, 66 Diaz, 67 Cui et al, 68 and Hardjito et al 69 The details of these formulations are presented in Table 3.…”

Section: Methodsmentioning

confidence: 99%

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Calibration of a stress-strain response for geopolymer concrete under axial compressive load

Dao

Tran

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The use of geopolymer concrete (GPC) in common load-bearing structures is still limited, mainly due to the lack of specific design procedures and limited understanding of the stress–strain behavior under uniaxial loading. The present work investigates the mechanical responses of GPC under axial compressive load by conducting a large number of experiments. For this purpose, 198 samples with three GPC mixes were designed, including concrete grades of 30, 40, and 50 MPa. The samples were prepared following the ASTM standards to determine the stress–strain relationship under compression. The results showed that fly ash-based GPC had average elastic modulus values of 30.424, 31.497, and 33.650 GPa, respectively, for G30, G40, and G50, lower than estimated using formulae for Ordinary Portland Cement (OPC) concrete, such as ACI standard 318-11, AASHTO-2007, and others. Furthermore, a novel model of GPC stress–strain response was proposed, mainly based on the empirical formulation suggested by Sargin using a modified factor D. Besides, the deformation of GPC was observed larger than that of OPC with similar strength, for instance, the strain at peak stress [Formula: see text]. The GPC was also found to have better plasticity behavior than OPC while conducting the axial stress–strain response, with the obtained values of [Formula: see text]. The findings of this work might lead to additional in-depth research into GPC's mechanical characteristics, particularly its structural behavior.

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Section: Resultssupporting

confidence: 80%

Section: Methodsmentioning

confidence: 99%

Calibration of a stress-strain response for geopolymer concrete under axial compressive load

Dao

Tran

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Peningkatan modulus elastisitas beton akan terlihat dari umur 7 hari hingga 28 hari. Dalam periode 28 hingga 90 hari tidak akan terjadi perubahan begitu signifikan (Křížová & Hela 2016).…”

Section: Prediksi Modulus Elastisitasunclassified

Evaluasi Kuat Tekan Beton Recycle Agregat Dengan Campuran Air Laut Dan Prediksi Modulus Elastisitasnya

Sulaiman¹

2018

JIIT

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Produksi beton dengan konsumsi air tawar yang cukup tinggi menjadi fokus utama oleh pemerintah dan insinyur akhir-akhir ini untuk mengatasi permasalahan yang terjadi. Ditambah, agregat normal (AN) yang semakin hari semakain berkurang jumlahnya dari sumber-sumber alamiahnya merupakan hal yang krusial untuk mencari alternatif pengganti. Oleh karena itu, penelitian ini memaparakan secara eksplisit sifat kuat tekan beton recycle agregat dengan air laut sebagai campuran dalam pembuatan beton sebagai material bangunan struktur dan prediksi modulus elastisitasnya. Pengujian eksperimen laboratorium dilakukan terhadap total tiga puluh spesimen uji berbentuk silinder (15x30cm) untuk mengevaluasi durabilitas beton dibawah pengaruh beban tekan dengan target sebesar 300 kg/cm² (29 MPa). Dua komposisi campuran yang berbeda disiapkan dimana campuran pertama adalah 100% air laut dan 100% agregat recycle dan kedua adalah campuran 100% air tawar dan 100% agregat recycle sebagai kontrol beton dengan faktor air semen sebesar 0.45. Kemudian spesimen uji diletakkan kedalam bak perendaman yang menggunakan air tawar dengan perbedaan waktu perawatan yaitu 3, 7, 14, 21, dan 28 hari. Hasil pengujian memperlihatkan bahwa kombinasi antara beton agregat recycle dengan campuran air laut (BAR-AL) memiliki kuat tekan awal tinggi pada umur 3 hari perawatan dan dicapai perbedaan kuat tekan sebesar 21% jika dibandingkan beton agregat recycle dengan campuran air tawar (BAR-AT) pada umur 28 hari. Oleh karena iu, diperlukan metode pendekan tertentu untuk meningkatkan kuat tekan BAR-AL agar setara bahkan lebih besar dari kuat tekan BAR-AT. Prediksi modulus elastisitas beton recycle dilakukan dengan menggunakan empat pendekatan matematis. Dari hasil analisis, persamaan empiris modulus elastisitas yang lebih mendekati real adalah dengan menggunakan pers.5 untuk BAR-AL dan persamaan matematis ACI318-14 untuk BAR-AT

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Evaluation of Modulus of Elasticity of Plastic Aggregate Concrete

Saju¹,

Smitha²

2021

Lecture Notes in Civil Engineering

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Evaluation of the Modulus of Elasticity of Different Types of Concrete Compared with Eurocode 2

Cited by 3 publications

References 2 publications

Calibration of a stress-strain response for geopolymer concrete under axial compressive load

Calibration of a stress-strain response for geopolymer concrete under axial compressive load

Evaluasi Kuat Tekan Beton Recycle Agregat Dengan Campuran Air Laut Dan Prediksi Modulus Elastisitasnya

Evaluation of Modulus of Elasticity of Plastic Aggregate Concrete

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