Experimental Study: The Behaviour of Pre-cast Normal-Light-Normal Weight Concrete Sandwich Panels Under Lateral In-Plane Loading
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| Terbitan: |
#CREATOR_ORGNAME#
, 2013
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| Online Access: |
http://digilib.polban.ac.id\/download.php?id=6717 |
Daftar Isi:
- The experimental study is to investigate the type and behavior of the shear connectors under vertical shear load or push-off test. The push-off test was conducted using 104 prismatic specimens. Each specimen consists of two normal weight concrete at the outer layers in-filled with one layer of lightweight concrete. The thickness of each of the normal weight and the lightweight concrete layers were 60 mm and 80 mm, respectively resulting in dimension of the cross section is 200 mm by 100 mm. The height of the specimens was varied, i.e. 200 mm, 300 mm, and 500 mm. The three concrete layers were connected by the steel shear connectors with diameter of 5.5 mm in the form of sinusoidal type. The puss-off tests were carried out to obtain ρ, which is defined as the ratio of the cross sectional area of the shear connector to the shear area. The method to determine ρ was developed by varying the ρ value of the push-off tests. The maximum ρ obtained relates to the highest value of shear strength of interface lamina of normal-light-normal concrete leading to a failure which is initiated by yielding of the connectors prior to crushing of the normal and lightweight concrete of the specimens. After the maximum ρ has been found, then this value was used in the design of normal-light-normal weight concrete sandwich panel. The results of the research indicated that shear strength of interface lamina of normal-lightweight concrete is increasing as the value of ρ increases. It is found that the maximum value of ρ in this research was around 0.06 %. In addition to the behavior of the shear connector developed under the push-off tests, the formulation of the relationship between ρ and the shear strength of the specimen among the layers at the interfaces of the normal and lightweight concretes are also developed. It is expected that the formulation will contribute to current concrete codes.