GDL

Study of The Shear Interface Behaviour of Concrete-Foam Using Push-off Test

Tugas Akhir, 026 / 2013 / KGE
Undergraduate Theses from JBPTPPOLBAN / 2017-02-20 12:40:39
Oleh : Bisma Agung Yudistira - 101111038 & Ria Anggraini - 101111060 (bismaagungyudistira@gmail.com; riaanggraini7@yahoo.com)
Dibuat : 2017-02-20, dengan 4 file

Keyword : beton-foam, komposit hibrid, push-off test, bidang geser, geser murni, densitas, koefisien gesek
Subjek : concrete-foam, hybrid composites, push-off test, shear area, pure shear, density, the friction coefficient

Studi ini mempelajari perilaku mekanik dari foam dan perilaku geser murni antara beton-foam. studi dilakukan secara eksperimental yang terdiri atas 2 tahap, tahap pertama, untuk mengetahui sifat mekanik dari foam yaitu kuat tekan, modulus elastisitas, dan densitas. Tahap kedua,untuk mengetahui perilaku geser antara foam-beton dan mengamati pola retak yang terjadi pada benda uji geser murni foam-beton. Variabel pengujian geser murni yakni densitas, jenis permukaan bidang gesek, dan luas pemukaan bidang gesek. Hasil studi menunjukkan bahwa foam memiliki sifat cenderung elastis. Foam dengan densitas kecil akan mengalami creep limit, dimana tegangan yang bertambah tetapi regangan yang terjadi cenderung tetap. Densitas mempengaruhi kekakuan foam, semakin tinggi maka semakin tinggi pula kekakuannya. Nilai koefisien gesek foam terhadap beton berbanding lurus dengan nilai densitas dari foam. Nilai koefisien gesek foam-beton dengan densitas foam 12 kg/m3, 20 kg/m3, dan 30 kg/m3 adalah 0,00247; 0,00552; dan 0,0079 secara berurutan. Hal ini menunjukkan semakin kecil densitas foam, maka semakin kecil koefisien gesek foam-beton tersebut. Sebaliknya, semakin besar densitas foam maka semakin besar koefisien foam-beton. Kata kunci: beton-foam, komposit hibrid, push-off test, bidang geser, geser murni, densitas, koefisien gesek.

Deskripsi Alternatif :

This study studied the mechanical behavior of the foam and pure shear behavior between concrete-foam. Experiment conducted of two phases, the first phase, is to determine the mechanical properties of foam which are compressive strength, modulus of elasticity, and density. The second phase, is to determine the shear behavior between concrete-foam and it observed of crack patterns that occurs in pure shear of concrete-foam. Variable of the pure shear test are density, type of surface friction, and the friction surface area. The results showed that foam tends to have elastic properties. Foam with small density will has reached the creep limit, where the tension is increased but the strain that occured tends to fixed. The density affects the stiffness of foam, the higher of density caused the stiffness get higher. The friction coefficient value of concrete-foam is directly proportional to the value of the density foam.Values of concrete-foam with density foam 12 kg/m3, 20 kg/m3, and 30 kg/m3 are 0,00247; 0,00552, and 0,0079 sequentially. It shows that the smaller foam density get the lower friction coefficient value of these concrete-foam. In otherwise, the higher density of foam get the higher friction coefficient of concrete -foam. Keywords: concrete-foam, hybrid composites, push-off test, shear area, pure shear, density, the friction coefficient.

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