A Preliminary Experimental Study on Vibration Responses of Foamed Concrete Composite Slabs

Global Congress on Construction, Material and Structural Engineering 2017

材料科学;土木建筑工程

Rum, R.H.M.^1 ; Jaini, Z.M.^2 ; Abd Ghaffar, N.H.^2 ; Abd Rahman, N.^2

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor

86400, Malaysia^1

Jamilus Research Center, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor

86400, Malaysia^2

关键词: Acceleration-time history;    Construction process;    Corrugated steel;    Foamed concrete;    High flexibility;    Maximum acceleration;    Normal concretes;    Vibration response;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/271/1/012102/pdf
DOI  :  10.1088/1757-899X/271/1/012102

来源: IOP

【 摘 要 】

In recent years, composite slab has received utmost demand as a floor system in the construction industry. The composite slab is an economical type of structure and able to accelerate the construction process. Basically, the composite slab can be casting by using a combination of corrugated steel deck and normal concrete in which selfweight represents a very large proportion of the total action. Therefore, foamed concrete become an attractive alternative to be utilized as a replacement of normal concrete. However, foamed concrete has high flexibility due to the presence of large amount of air-void and low modulus elasticity. It may result in vibration responses being greater. Hence, this experimental study investigates the vibration responses of composite slab made of corrugated steel deck and foamed concrete. The specimens were prepared with dimension of 750mm width, 1600mm length and 125mm thickness. The hammer-impact test was conducted to obtain the acceleration-time history. The analysis revealed that the first natural frequency is around 27.97 Hz to 40.94 Hz, while the maximum acceleration reaches 1.31 m/s2to 1.88 m/s2. The first mode shape depicts normal pattern and favourable agreement of deformation.