Kinerja Rangkak pada Balok Beton Sandwich dengan Isian Styrofoam (Cement EPS Sandwich Panel)

Rilo Hanif Hasbi Ardin, Yohanna Ariesta, Rr. M.I. Retno Susilorini, David Widianto Widianto,





Abstract

Precast material is a user-friendly construction product. One innovation that is being developed is sandwich concrete. Sandwich concrete is composed by skin layers, that are strong and stiff, and lightweight concrete as core layer. As a part of builiding construction, each structural and non-structural element resists load in certain time. The purpose of this research is to investigate creep performance of concrete sandwich beam. By observing the effect of creep, it can be known the long-term effect due to the constant loading on a material. The test specimen is formed of sandwich construction beam, with its core layer consists of lightweight concrete and styrofoam (cement EPS sandwich panel) mixture.

This research conducted with two kinds of size and proportions of specimen, single beam (length=100 cm; width=20 cm; thickness=7,5 cm)and double beam (length=100 cm; width=20 cm; thickness=7,5 cm)which is a combination of single beams glued together with Sikabond. The loading method that used in this research is third point loading as described on ASTM C393 in two positions, horizontally and vertically. After having loaded of 3 kN in 2 hours, each test specimen has deflected and gives creep strain value. The values of creep strain are: specimen RH-S01 by 3,23%, specimen RV-S03 by 0,40%, specimen RH-D03 by 0,60%, dan specimen RV-D02 by 0,32%.The smallest value of creep strain obtained by double beam that was tested vertically, due to have greater EI value than the horizontally tested specimens. According to the maximum deflection and load that can be resisted by the specimens, sandwich concrete shall not be recommended for structural beam. This research shows that the creep effect of constant loading by 3 kN for 2 hours on sandwich concrete beam is not secure


Save to Mendeley



Keywords

sandwich concrete, creep, styrofoam, deflection, cement EPS sandwich panel

Full Text:

PDF

References

ASTM C393/C393M. Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure.

ASTM C480-99. Standard Test Method for Flexure Creep of Sandwich Constructions.

Callister, W. D. (2007). Materials Science and Engineering Seventh Edition. New York: John Wiley and Sons, Inc. Diakses pada 7 November 2017 dari https://abmpk.files.wordpress.com/2014/02/book_maretial-science-callister.pdf.

Dharma Giri, I. B., Sudarsana, I. K., & Tutarani, N. M. (2008, Januari). “Kuat Tekan dan Modulus Elastisitas Beton dengan Penambahan Styrofoam (Styrocon”)”. Jurnal Ilmiah Teknik Sipil, 12, 75-85. Dipetik November 7, 2017. Diakses pada 7 Juli 2017 dari https://ojs.unud.ac.id/index.php/jits/article/view/3480.

Dipohusodo, I. (1999). Struktur Beton Bertulang. Jakarta: Gramedia.

Firdaus. (2013). “Perilaku Elemen Beton Sandwich Terhadap Pengujian Geser Murni.” Konferensi Nasional Teknik Sipil 7 (hal. 39-46). Surakarta: Universitas Sebelas Maret. Diakses pada 5 Mei 2017 dari http://sipil.ft.uns.ac.id/konteks7/prosiding/036S.pdf.

Hongbo Zhu, C. L. (2014). “Impact Resistance of A Novel Expanded Polystrene Cement-Based Material.” Journal of Wuhan University of Technology-Mater.Sci.Ed., 29, 284-290. Diakses pada 10 Juli 2017 dari https://link.springer.com/content/pdf/10.../s11595-014-0909-4.pdf.

IAIMagazine. (2009, December). “Reinforced concrete - Expanded Polystrene (EPS) Sandwich Panel.” Techno Konstruksi Magazine, hal. 2-5. Diakses pada 10 Juli 2017 dari http://www.b-panel.com/2009-12-reinforced-concrete-%E2%80%93-expanded-polystyrene-eps-sandwich-panelmegatrend-energy-efficient-and-earth-quake-building-material.

Jones, R. M. (1999). Mechanics of Composite Materials (2nd ed.). Philadelphia: Taylor & Francis, Inc. Diakses pada 7 November 2017 dari https://soaneemrana.org/onewebmedia/Mechanics%20of%20Composite%20Materials%202nd%20Ed%201999%20BY%20%5BTaylor%20&%20Francis%5D.pdf.

Kristiawan, S. (2002). Restrained Shrinkage Cracking of Concrete. Inggris: School of Civil Engineering PhD.

Nasser, S. N. (1975). “Theory of Creep and Shrinkage In Concrete Structure : A Precis of Recent Developments.” (Vol. II, hal. 1-99). Illinois: Mechanics Today. Diakses pada 6 Juli 2017 dari http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/S2.pdf.

Neville, A. (1981). Properties of Concrete (5th ed.). London: Pitman. Diakses pada 3 November 2017 dari https://igitgeotech.files.wordpress.com/2014/10/properties-of-concrete-by-a-m-neville.pdf.

Samuri. (2010). “Pengaruh Rangkak terhadap Kompatibilitas Dimensional Antara Beton Normal dan Repair Material dengan Bahan Tambah Polymer.” Surakarta: Universitas Sebelas Maret. Diakses pada 10 Juli 2017 dari https://eprints.uns.ac.id/8729/1/132560608201007071.pdf.

Straalen, I. J. (1998). “Comprehensive Overview of Theories for Sandwich Panels.” Workshop on Modelling of Sandwich Structures and Adhesive Bonded Joints (hal. 71-100). Porto: TNO Bouw.

Suamita, I. W. (2012). “Karakteristik Beton Ringan dengan Menggunakan Tempurung Kelapa sebagai Bahan Pengganti Agregat Kasar.” Palu: Universitas Tadulako. Diakses pada 9 Juli 2017 dari https://www.academia.edu/4763067/KARAKTERISTIK_BETON_RINGAN_DENGAN_MENGGUNAKAN_TEMPURUNG_KELAPA_SEBAGAI_BAHAN_PENGGANTI_AGREGAT_KASAR.

Susilorini, Rr. M. I. R, Widianto, D. (2018). “Inovasi Teknologi Beton Sandwich dengan Isian Styrofoam.” Laporan Akhir. Program Studi Teknik Sipil, Unika Soegijapranata.

Winter, G., & Nilson, A. H. (1993). Perencanaan Struktur Beton Bertulang. Jakarta: PT Pradnya Paramita.


DOI: https://doi.org/10.24167/gs.v1i2.1392

Article Metrics

Abstract viewed : 92 times
PDF files downloaded : 11 times

Refbacks

  • There are currently no refbacks.


View My Stats