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Ma'arif, Faqih
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Civil Engineering, Building, Construction & Architecture

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Studi Eksperimen Non-Destructive Test dengan Metode Semi-Direct pada Beton Ma'arif, Faqih; Yasin, Iskandar; Haza, Zainul Faizien
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 1 (2022): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i1.49118

Abstract

Teknik pengukuran kualitas beton dapat dideteksi dengan mengetahui besarnya kecepatan perambatan gelombang ultrasonik. Dalam prosesnya, akurasi hasil pengukuran ditentukan oleh jarak transducer dan receiver, mutu material, impedansi akustik material, dan salah satunya homogenitas material. Hingga kini, metode yang populer digunakan adalah direct dan indirect untuk mengetahui kualitas material dan deteksi kerusakan pada beton. Salah satu kendala utama yang dihadapi adalah ketika kedua metode tersebut tidak dapat digunakan disebabkan kondisi eksisting Gedung. Skema uji semi-direct diusulkan untuk membantu menyelesaikan permasalahan yang tidak dapat dijangkau oleh metode direct dan indirect. Hasil akhir pengujian menunjukkan tingkat akurasi yang lebih rendah dibandingkan metode yang lainnya dengan selisih hasil pengujian 30%. 
Evaluation and Redesign Based on Highway Geometric Design Guidelines 2021 (Case Study of Sampakan–Singosaren Road KM 13.8, Bantul Regency) Wibowo, Dian Eksana; Putra, Yoga Pratama; Ma'arif, Faqih
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.54664

Abstract

This study aims to : (1) evaluate the geometric design of the Sampakan–Singosaren street km 13,8 Bantul Regency based on Panduan Desain Geometrik Jalan Bina Marga 2021; (2) identify the factor considered as evaluation, (3) propose alternative design and (4) to evaluate the differences between existing geometric design and alternative geometric design. The study used trial-and-error modeling for existing, and alternative geometric using Auto cad Civil 3D Student Version and analyzed according to Bina Marga standard. Then, a comparison of the existing and alternative geometric designs is calculated based on Bina Marga Geometric Design Standard 2021. The result indicates of study that there are 2 (two) existing curves with (1) each radius range at 37 m and 30 m, respectively; (2) the horizontal sight line offset on the first curve and the second curve was 4,7 m and 0.7 m, and the driving speed of 40 km/h. Furthermore, there is some parameter that does not meet the requirements, so an alternative design is required to fulfill the requirements of Bina Marga Geometric Design Standard 2021; (3) The designed shift on the new track to ± 9 m east and ± 5 m south; (4) the radius in both curve (S-C-S) is about 44 m, (5) horizontal sight line offset on the first curve and the second curve was 8,38 m and 7,557 m. Some changes to the existing and alternative design are the larger radius, the lower super elevation, new track is more flexible, and the better JPH and horizontal sight line offset.
The Effect of Mortar Mixture Variations on the Compressive Strength and Ultrasonic Pulse Velocity Nugroho, Maris Setyo; Ma'arif, Faqih; Widodo, Slamet; Rachmi, Dewi; Fajriani, Qonaah; Suryadwanti, Novia; Setiawan, Wildan
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.55256

Abstract

This paper examines the correlation between compressive strength, porosity, and ultrasonic wave propagation in mortar. The research was conducted at the Yogyakarta State University Building Materials Laboratory. The study used an experimental method, mortar was made with variations in the ratio of cement and fine aggregate 1:3, 1:4, 1:5, 1:6, and 1:7 with a phase of 0.48. The manufacture of test objects in the form of a cube measuring 5x5x5 cm refers to SNI 03-6825-2002. Tests were carried out at the age of 3, 7, 14, 21, and 28 days with three samples per test age. The data was processed by quantitative descriptive method to determine the relationship between the variables, especially the relationship between wave propagation speed and compressive strength, as well as its relationship with the porosity value. The results of compressive strength and wave propagation speed are directly proportional to the age of the test. With the results of the compressive strength at 1:3, 1:4, 1:5, 1:6, and 1:7 variants, respectively 31.12 MPa, 19.83 MPa, 12.25 MPa, 5.38 MPa, and 3.89 MPa and wave propagation speed of 3827.67 m/s, 3641.7 m/s, 3561.3 m/s, 2019,0 m/s, and 1691.0 m/s. Then the porosity values are 11.12%, 12.88%, 16.36%, 17.60%, and 22.06%. The compressive strength has a correlation that is directly proportional to the logarithmic speed of wave propagation, the higher the value of the compressive strength, the higher the UPV value, and inversely proportional to the porosity value as well as the speed of the wave propagation which is inversely proportional to the porosity value. The higher the porosity value, the lower the compressive strength value and the UPV value.
Co-Authors Dian Eksana Wibowo Fajriani, Qonaah Iskandar Yasin Maris Setyo Nugroho Rachmi, Dewi Setiawan, Wildan Slamet Widodo Suryadwanti, Novia Yoga Pratama Putra Zainul Faizien Haza, Zainul Faizien