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Article

Elastic Modulus Prediction Model of Foamed Concrete Based on the Walsh Formula

School of Civil Engineering, Central South University, Changsha 410075, China
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Authors to whom correspondence should be addressed.
Academic Editors: Stefano Invernizzi and Dario De Domenico
Appl. Sci. 2022, 12(10), 5142; https://doi.org/10.3390/app12105142
Received: 14 April 2022 / Revised: 11 May 2022 / Accepted: 16 May 2022 / Published: 19 May 2022
(This article belongs to the Special Issue Advanced Underground Space Technology)
Foamed concrete consists of cement matrix and air-foam and has more complicated structure characteristics than normal concrete. However, current research on the elastic modulus of foamed concrete is still limited to empirical equations. In this work, a new theoretical prediction model was proposed for calculating the elastic modulus of foamed concrete. The elastic modulus calculation model for the spherical shell element of foamed concrete is constructed based on the Walsh formula and the assumption of spherical pores. Moreover, the theoretical prediction model is established by introducing the two-layer embedded model for the elastic modulus of foamed concrete. Then, the compressive test is employed to verify the accuracy of the model. The results show that the elastic modulus of foamed concrete decreases with the increase in porosity and matrix Poisson’s ratio, and increases with the increase in the matrix elastic modulus. The research results can improve the mechanical theories of foamed concrete materials and have good engineering application values. View Full-Text
Keywords: foamed concrete; elastic modulus; Walsh formula; two-layer embedded model; spherical pore assumption; mesomechanics foamed concrete; elastic modulus; Walsh formula; two-layer embedded model; spherical pore assumption; mesomechanics
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MDPI and ACS Style

Zhou, Z.; Hu, J.; Li, F.; Zhang, J.; Lei, M. Elastic Modulus Prediction Model of Foamed Concrete Based on the Walsh Formula. Appl. Sci. 2022, 12, 5142. https://doi.org/10.3390/app12105142

AMA Style

Zhou Z, Hu J, Li F, Zhang J, Lei M. Elastic Modulus Prediction Model of Foamed Concrete Based on the Walsh Formula. Applied Sciences. 2022; 12(10):5142. https://doi.org/10.3390/app12105142

Chicago/Turabian Style

Zhou, Zhong, Jiangfeng Hu, Fan Li, Junjie Zhang, and Mingfeng Lei. 2022. "Elastic Modulus Prediction Model of Foamed Concrete Based on the Walsh Formula" Applied Sciences 12, no. 10: 5142. https://doi.org/10.3390/app12105142

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