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

• Published in: IOP conference series. Materials Science and Engineering Vol. 271; no. 1; pp. 12102 - 12109
• Main Authors: Rum, R H M, Jaini, Z M, Abd Ghaffar, N H, Abd Rahman, N
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.11.2017
• Subjects: Concrete slabs; Construction industry; Hammers; Impact tests; Resonant frequencies; Slab casting; Steel decks; Vibration response
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/271/1/012102

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/s2 to 1.88 m/s2. The first mode shape depicts normal pattern and favourable agreement of deformation.