Determination of the deformation characteristics of the foam concrete as a sub-base

• Main Authors: Veronika Valaskova, Jozef Vlcek
• Format: Article
• Language: English
• Published: JVE International 2020-11-01
• Series: Journal of Vibroengineering
• Subjects: deformation modulus; foam concrete; lwd; plt; strain modulus; sub-base
• Online Access: https://www.jvejournals.com/article/21108

Foam concrete (FC) is utilizable in various fields of application in civil engineering practice. It's most often used as a leveling sub-base in the floors of the buildings or foundation structures or as a fill material in open spaces such as unused underground structures. Foam concrete contains void pores so it has much lower bulk density than regular concrete. Together with the saving of material inputs, physical and mechanical parameters and low thermal conductivity, it predestinates its use as a structural element of the structures such as sub-base layers. Strain modulus from the second load cycle is the common control parameter in the sub-base design. Some elements of conventional PLT equipment are not usable for foam concrete testing because of larger deflection radius due to the larger stiffness of foam concrete. When reliable relation between dynamic modulus and conventional strain modulus is determined, LWD testing can substitute the PLT test as a quick and simple method. This paper is the first approach to estimate this relation.