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All Journal Journal of Advanced Civil and Environmental Engineering Teknika Journal of the Civil Engineering Forum Jurnal Teknik Sipil
Nur Fithriani F. Cholida
Departement Of Civil Engineering, Universitas Semarang, Semarang
Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Transportation

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Investigation on the Compressive Strength of Gunny Sack Fiber Concrete under High-Temperatures Nur Fithriani F. Cholida; Purwanto P.; Hani Purwanti
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 3, No 1 (2020): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.3.1.27-35

Abstract

Gunny sack fiber concrete has not been explored especially the behavior under high temperatures. This paper presents the results of an experimental investigation of gunny sack fibrous concrete (percentage of 0.5% of volume) given a monotonic- compressive load. A number of cylindrical test specimens were made which consisted of control specimens and which were incinerated at temperatures of 300oC, 600oC and 900oC. The concrete -compressive strength was designed with three variations of the cement water ratio to get the compressive strength of a standard cylinder with normal, medium and high -quality compressive strength categories. Experimental results show that normal to high quality concrete can be produced with gunny sack fiber substitution. The compressive strength of the gunny sack fiber concrete decreased significantly from the control specimen to the specimen which was burned at 300oC. The loss of compressive strength from the control specimens to the post-burn specimens of medium quality and high -quality of gunny sack fiber concrete was the same compared with the loss of compressive strength of normal- quality concrete. This study also carried out a comparison of the degradation of the compressive strength of steel fibrous concrete with gunny sack fiber in post-burn conditions.
A Parametric Study of Confinement Effects to the Interaction Diagram of P-M for High-Strength Concrete Columns Nur Fithriani Fatma Cholida; A Antonius; Faiqun Ni'am
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 1, No 1 (2018): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.1.1.30-37

Abstract

In reinforced concrete columns design, P-M interaction diagram is used as axial load control and column bending without taking into account the effect of lateral reinforcement bars. Design principles that ignore the effect of reinforcement bars will result in low value of actual axial capacity of column. This paper presents the effect of lateral reinforcement with a case study of square-sectional columns on high-strength concrete. The equation of unconfined concrete strength enhancement is based on Mander, Legeron, Imran, Antonius and Muguruma models. The reviewed parameters include compressive strength of concrete, reinforcement configuration, and spacings of confinement. The result of the analysis is a comparison of P-M diagram based on confinement models. It shows that confinement significantly influences axial capacity of column, yet it has a certain collapse point at point P = 0 in all models. This is caused by longitudinal reinforcement system. Configuration of reinforcement, spacing and confinement models greatly affects the collapse behavior of column, whether the collapse is classified as compressive collapse or tensile collapse based on the P-M diagram.
KESIAPAN INSTANSI PEMERINTAH KOTA SEMARANG DALAM MENGHADAPI PERATURAN SERTIFIKAT LAIK FUNGSI (SLF) BANGUNAN GEDUNG Nur Fithriani Fatma Cholida; Hani purwanti; bambang sudarmanto; Lila Anggraini
Teknika Vol 15, No 2 (2020): Oktober
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (896.251 KB) | DOI: 10.26623/teknika.v15i2.2668

Abstract

Dalam rangka mewujudkan bangunan gedung yang tertib secara administrasi atau teknis, maka setiap daerah diwajibkan untuk menyelenggarakan Sertifkat Laik Fungsi (SLF). Meskipun merupakan kebijakan baru namun wajib untuk dilaksanakan mengingat fungsi dari bangunan gedung adalah menjamin keselamatan, kesehatan, kenyamanan dan kemudahan bagi penghuninya sesuai dengan UU No. 28 tahun 2002 tentang bangunan gedung dan UU tersebut dipertegas lagi dalam PP No. 36 Tahun 2005 tentang Peraturan pelaksanaan UU diatas, namun sifatnya masih dalam standart peraturan gedung secara umum belum spesifik mengarah pada Sertifikasi Laik Fungsi (SLF) Bangunan Gedung. Kemudian pada tahun 2007 munculah peraturan yang dibuat oleh Menteri Pekerjaan Umum No. 25/PRT/M/2007 tentang Sertifikasi Laik Fungsi (SLF) Bangunan Gedung, secara spesifik. Kemudian dilanjutkan dengan peraturan yang lebih baru ialah Peraturan Menteri Pekerjaan Umum No. 27 Tahun 2018 tentang Sertifikasi Laik Fungsi Bangunan Gedung. Yang disambut dengan Peraturan Daerah Kota Semarang No.5 tahun 2009 tentang Bangunan Gedung dan Peraturan Walikota No.38 tahun 2012 tentang Pengawasan dan Penerbitan Penyelenggaraan Bangunan Gedung, yang mendasari bahwa penerapan Sertifikasi Laik Fungsi (SLF) Bangunan Gedung harus dilaksanakan di Kota Semarang. Tujuan dari penelitian ini untuk mengetahui keandalan suatu bangunan gedung sebagai bukti keandalan bangunan gedung maka akan diterbitkan Sertifikat Laik Fungsi (SLF) oleh pemerintah kota /kabupaten.
A Comparative Study on the Confinement Models of High-Strength Steel Fiber Concrete Nur Fithriani F. Cholida; Antonius; Lintang Enggartiasto
Journal of the Civil Engineering Forum Vol. 8 No. 3 (September 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.4029

Abstract

Since the last four decades, the behavior of concrete contains of steel fiber, or often called steel fiber concrete, with a wide range of compressive strength has been carried out. Generally, the results of the experimental program produced a material which has a more ductile compared with normal concrete or concrete without fiber. Due to the ductility properties of the material, it is very suitable for use as an earthquake-resistant structural material. At the same time, the behavior of high-strength steel-fiber concrete has also investigated, one of which is about confined high-strength steel-fiber concrete. Analytical models of confined high-strength steel fiber concrete have been developed in various preliminary studies, with their characteristics derived based on the experimental results. Therefore, this research evaluated the models of confined high-strength steel-fiber concrete proposed by Mansur et al., Hsu and Hsu, and Paultre et al. The evaluation includes stress-strain behavior, strength enhancement of confined concrete (f'cc/f'co) or K value, the increase in confined concrete strain (ε'cc/ε'co), and strain of confined concrete when the stress has dropped by 50 percent against its unconfined strain (εcc50/εc50). The comparison method was carried out using a statistical approach and stress-strain simulation. Evaluation results showed significant predictive differences in confinement models in terms of post-peak behavior and parameters ε'cc/ε’co and εcc50/εc50. Prediction of confinement models on the value of f'cc/f’co to the experimental results has a coefficient of variation above 10%. The result further showed that a modified model of confined high-strength steel-fiber concrete was proposed and able to simulate the stress-strain behavior.
Performance of The Existing Building Under Earthquake Loads Based on Current Indonesian National Standard Lintang Enggartiasto; Nur Fithriani Fatma Cholida; Purwanto P
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 5, No 2 (2022): October
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.5.2.94-102

Abstract

This paper presents the results of an assessment of the existing 5-storey building built in 1980, which aims to determine the level of safety against the most recent standards. The method used is non-destructive testing, collecting planning data in the form of as built drawings and implementation data. The assessment of the existing structure consists of an evaluation of the condition of the material, structural system, and analysis of the structure using the latest load standards. The test results of the existing structural material show that the compressive strength of the concrete still meets the requirements based on SNI-2847-2019. The results of the evaluation of the structure against earthquake loads show that the performance of the structure has a mass participation of 100% and the dynamic base shear force (V) reaches 100% of Vstatic therefore it meets the requirements in SNI 1726-2019. The results of the evaluation of the performance of the structure show that the lateral drift and P-delta effects still meet the requirements of the most recent standards. Horizontal and vertical structural irregularities are found in the existing structural system. The structure's overall performance level (X and Y direction earthquakes) is Damage Control. These results are still permitted for structures with a priority factor (Ie) 1.50, with an earthquake return period of 2500 years.
ANALISIS KAPASITAS DAYA DUKUNG PONDASI DANGKAL BERDASARKAN PENGUJIAN CONE PENETRATION TEST Undayani Cita Sari; Nur Fithriani Fatma Cholida; Moh Nur Sholeh; M Mirza Pratama
Jurnal Teknik Sipil Vol 18 No 1 (2022): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v18i1.3760

Abstract

In the simple buildings, shallow foundations can be used to support the construction above them. This shallow foundation has various types, including the type of footplate which can be calculated using the Terzaghi equation. In the Terzaghi equation, it requires dimension parameters of the footing and soil material parameters such as cohesion and soil volume weight which requires laboratory testing to obtain it. Meanwhile, Schmertmann provides an equation to obtain the Terzaghi bearing capacity factor in the form of Nq and Nγ by using the Cone Penetration Test (CPT). This bearing capacity factor value can be used to calculate the bearing capacity using the Terzaghi Equation. In addition, Schmertmann also provides an equation to directly calculate the bearing capacity value based on CPT data. Based on this problem, this study analyzes the bearing capacity of various footplate dimensions using the Schmertmann approach. The study took place in the Argoboga, Salatiga which the type of soil based on the CPT test value generally is sandy soil. The results show that the bearing capacity calculated by the Nq correlation method is greater than the Nγ correlation method and the direct correlation method. In addition, the greater the difference between the dimensions and the depth of the foundation, the greater the deviation of the bearing capacity results between each method.  
Co-Authors A Antonius Antonius bambang sudarmanto Faiqun Ni'am Lila Anggraini Lintang Enggartiasto Lintang Enggartiasto M Mirza Pratama Moh Nur Sholeh Purwanti, Hani Purwanto P Purwanto P. Undayani Cita Sari