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All Journal Rekayasa Sipil
Christin Remayanti N.
Jurusan Teknik Sipil Fakultas Teknik Universitas Brawijaya
Civil Engineering, Building, Construction & Architecture

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Evaluation Of Reinforced Concrete’s Beam’s Capacity With Open Crack And Variation of Cover Thickness Using UPV And Hammer Test Saifoe El Unas; Sugeng P. Budio; M. Taufik Hidayat; Achfas Zacoeb; Ristinah Ristinah; Roland Martin S.; Christin Remayanti N.; Ahmad Rizqol Mahbub
Rekayasa Sipil Vol 7, No 3 (2013)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (623.407 KB)

Abstract

Defect in building’s structure can be analyzed by non-destructive method or NDT, such as UPV Test and hammer test. Furthermore the UPV, hammer test, compressive strength test, flexural test and statistical analysis show the accuration of quality test result with the NDT method. The specimen used is brick-formed with the dimension of 15x20x140 cm and the variation of cover thickness. Average relative error of hammer test of cylinder test is about 2,83% - 7,32%. While UPV’s average relative error of cylinder sample is 4,74% - 55,05%. Based on statistical analysis, hammer test shows there is no significant difference, while UPV test shows that there is significant difference. Calculation of compressive strength before and after flexural loading obtains a number of relative error, in hammer test 5,58% - 10,53% and UPV test 7,35% - 13,05%. 
Optimalisasi Desain Jembatan Lengkung (Arch Bridge) Terhadap Berat Dan Lendutan Sugeng P. Budi; Retno Anggraini; Christin Remayanti N.; I Made Bayu Arditya Widia
Rekayasa Sipil Vol 10, No 3 (2016)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.029 KB) | DOI: 10.21776/ub.rekayasasipil.2016.010.02.06

Abstract

Jembatan lengkung (arch bridge) adalah jembatan bentang panjang yang merupakan salah satu infrastruktur yang diperlukan dalam membantu masyarakat untuk melintasi pulau, sungai dan hambatan lainnya. Dalam merencanakan jembatan lengkung perlu diperhatikan beberapa hal sebagai contoh yaitu lokasi jembatan, biaya pembangunan jembatan, material jembatan serta tipe sambungan pada titik buhul jembatan. Untuk menghasilkan desain jembatan lengkung yang aman dan efisien maka peneliti melakukan penelitian mengenai optimasi desain jembatan lengkung terhadap rasio beban dan lendutan. Penelitian akan dilakukan dengan dua cara yaitu analisis dengan menggunakan bantuan software dan melakukan pengujian pada model jembatan. Model jembatan akan dibuat dari bambu dengan variasi tipe sambungan sehingga dari model jembatan tersebut maka dapat diketahui tipe sambungan yang dapat memberikan kinerja yang baik pada titik buhul jembatan. 
Crack Depth Measurement of Reinforced Concrete Beams Using UPV Ari Wibowo; Hendro Suseno; M. Hamzah Hasyim; Roland Martin S.; Christin Remayanti N.; Ardian Prima K.
Rekayasa Sipil Vol 8, No 1 (2014)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

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Abstract

Cracks in the concrete should not be ignored because it can cause serious problems. Cracks in concrete usually terms only in wide of rift, so a review of crack depth is needed. Crack depth can be measured by Ultrasonic Pulse Velocity (UPV). UPV test is one of the Non Destructive Tests on the building. UPV testing is influenced by several factors such as reinforced steel. The aim of this study is to determine the accuracy of crack depth in reinforced concrete beams with a thickness of concrete cover measured by UPV. Four variations of 15 concrete beams and one variation of unreinforced beam with thick concrete cover are used in this study. Three test specimens are used for each variation. The thickness of concrete cover is measured at point of 2 cm, 3 cm, 4 cm, and 5 cm. The concrete beams of 15 x 20 x 50 cm in size were designed with 8 cm crack depth. Artificial crack in the concrete beam is generated in a way to give the sealing of cracks in the aluminum zinc plate formwork before casting occur. Crack protection removed from the formwork with duration of 3-4 hours after casting. Crack depth measured by UPV test is done after 28 days concrete age. The results showed that there is a relative error of crack depth measured with UPV test. The average relative error of concrete with a thickness cover of 2 cm, 3 cm, 4 cm, and 5 cm was respectively 6.80 %, 6.63 %, 5.48 % and 4.91 %. The average relative error of unreinforced concrete was 4.59 %. Statistical analysis with one way F test shows that there is no significant difference between the relative error of crack depth measured with UPV test at each cover depth variation and unreinforced concrete with α = 0.05. 
Co-Authors Achfas Zacoeb Ahmad Rizqol Mahbub Ardian Prima K. Ari Wibowo I Made Bayu Arditya Widia M. Hamzah Hasyim M. Taufik Hidayat Retno Anggraini Ristinah Ristinah Roland Martin S. Saifoe El Unas Sri Murni Dewi, Hendro Suseno, Tatang Fendy Harianto, Sugeng P. Budi Sugeng P. Budio