Studi Numerik pada Balok Beton Bertulang dengan Perkuatan Hybrid Menggunakan GFRP (Glass Fiber Reinforced Polymer) dan Wiremesh

Isneini, Mohd.; Alami, Fikri; Surahman, Ridho

doi:10.23960/rekrjits.v24i1.3

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…Keropos adalah istilah yang merujuk pada situasi di mana ada ruang kosong atau ketidaksempurnaan pada permukaan beton yang pada dasarnya harus padat dan kuat. Lubang-lubang yang relatif dalam dan lebar pada beton, dikenal dengan sebutan voids atau honeycomb (Isneini, 2009). Masalah ini sering terjadi pada struktur beton dan memiliki dampak negatif pada kekuatan dan daya tahan struktur tersebut.…”

Section: Pendahuluan Latar Belakangunclassified

Analisis Beton Honeycomb Di Proyek Gw10

William,

Kushartomo

2024

j. mitra teknik sipil

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The analysis of concrete honeycomb is a significant study in the field of civil engineering that aims to comprehend, identify, and address honeycomb issues in concrete structures. Honeycomb is a condition where there are voids or defects on the concrete surface, which can result in a decrease in the strength and durability of the structure. In this research, concrete samples experiencing honeycomb from various construction projects were collected and subsequently, tested by various non-destructive testing methods such as ultrasonic testing and radar penetration. The analysis revealed that factors such as inadequate compaction during concrete mixing, insufficient care during curing, and problems during the construction process can be the causes of honeycomb formation. By understanding the causes and consequences of this phenomenon, recommendations to prevent such defect are provided, together with the structural repair to ultimately enhanc the integrity and lifespan of concrete structures. Abstrak Analisis mengenai beton keropos adalah sebuah penelitian yang sangat penting dalam bidang rekayasa sipil. Tujuannya adalah untuk memahami, mengidentifikasi, dan mengatasi masalah yang berkaitan dengan fenomena keropos pada struktur beton. Keropos adalah keadaan di mana terdapat ruang kosong atau ketidaksempurnaan pada permukaan beton, yang dapat menyebabkan penurunan kekuatan dan daya tahan struktur tersebut. Dalam penelitian ini, sampel beton yang mengalami keropos dari berbagai proyek konstruksi dikumpulkan dan diuji menggunakan berbagai teknik pengujian non-destruktif, seperti ultrasonik dan radar penetrasi. Hasil analisis menunjukkan bahwa faktor-faktor seperti ketidakmerataan pemadatan selama proses pencampuran beton, perawatan yang kurang memadai selama proses pengerasan, serta masalah dalam pelaksanaan konstruksi dapat menjadi penyebab terbentuknya keropos. Dengan memahami penyebab dan dampak dari fenomena ini, saran untuk mencegahnya , yang pada akhirnya akan meningkatkan kekokohan dan umur panjang pada struktur beton tersebut.

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Section: Pendahuluan Latar Belakangunclassified

Analisis Beton Honeycomb Di Proyek Gw10

William,

Kushartomo

2024

j. mitra teknik sipil

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“…However, the higher temperature will impact the speed of the evaporation process, which can lead to the formation of larger pores and result in cracking in the concrete. Due to water evaporation in a concrete mixture, cracks are called plastic cracking [40]. Minimizing the risk of increasing the cracks' size can be done by reducing the drying heat rate; thus, the speed of H 2 O evaporation can be controlled from the pores of the sample to the sample surface.…”

Section: Compressive Strengthmentioning

confidence: 99%

Circular Economy of Coal Fly Ash and Silica Geothermal for Green Geopolymer: Characteristic and Kinetic Study

Petrus

Olvianas

Shafiyurrahman

et al. 2022

Gels

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The study of geopolymers has become an interesting concern for many scientists, especially in the infrastructure sector, due to having inherently environmentally friendly properties and fewer energy requirements in production processes. Geopolymer attracts many scientists to develop practical synthesis methods, useful in industrial-scale applications as supplementary material for concrete. This study investigates the geopolymerization of fly ash and geothermal silica-based dry activator. The dry activator was synthesized between NaOH and silica geothermal sludge through the calcination process. Then, the geopolymer mortar was produced by mixing the fly ash and dry activator with a 4:1 (wt./wt.) ratio. After mixing homogeneously and forming a paste, the casted paste moved on to the drying process, with temperature variations of 30, 60, and 90 °C and curing times of 1, 3, 5, 7, 14, 21, 28 days. The compressive strength test was carried out at each curing time to determine the geopolymer’s strength evolution and simulate the reaction’s kinetics. In addition, ATR-FTIR spectroscopy was also used to observe aluminosilicate bonds’ formation. The higher the temperature, the higher the compressive strength value, reaching 22.7 MPa at 90 °C. A Third-order model was found to have the highest R2 value of 0.92, with the collision frequency and activation energy values of 1.1171 day−1 and 3.8336 kJ/mol, respectively. The utilization of coal fly ash and silica geothermal sludge as a dry activator is, indeed, an approach to realize the circular economy in electrical power generations.

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“…Salah satu bagian struktur yang sangat kritis adalah pertemuan balok -kolom (beam -column joint) [1][2]. GFRP (Glass Fiber Reinforced Polymer Sheet) adalah material yg menawarkan banyak keuntungan yaitu tahan terhadap korosi, kuat tarik yang besar dan ringan sehingga tidak memerlukan peralatan khusus untuk dapat membawanya kelokasi [3][4][5]. Berdasarkan hasil penelitian sebelumnya maka kami mencoba suatu metode pada joint balok -kolom dengan memberikan ikatan diagonal dengan maksud untuk mengurangi besarnya deformasi yang terjadi.…”

Section: Pendahuluanunclassified

Pengaruh Ikatan Diagonal GFRP Pada Hubungan Balok Kolom Pracetak Terhadap Kekuatan Sambungan

Hilmansyah

Parung

Djamaluddin

2021

RTCEJRD

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Precast system is one of the reinforced concrete construction methods that can be used for development. GFRP-S (Glass Fiber Reinforced Polymer Sheet) is one of material that can be used as materials in precast concrete connections. The research aimed at analysing the strenght and behaviour of the concrete beams on beam-column joint precast with GFRP-S.The research was conducted at the Laboratory of Civil Engineering Structures and Materials Hasanuddin University. Beams dimensions was 15cm x 20cm x 120cm and the column was 45cm x 20cm x 100cm. The testing materials were the precast beams with GFRP-S. The imposition given is monotonic static load in one direction.The results showed that an increase in stiffness of the precast beams with GFRP-S. LSI amounted to 16.64% of the LS. LIS amounted to 31.70% of the LS. The average deflection of LS are 55.05 mm. The average deflection of LSI are 45.89 mm. The average deflection of LIS are 37.60 mm. The models of failure in the precast beams with GFRP-S are rupture failure of GFRP-S.

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Studi Numerik pada Balok Beton Bertulang dengan Perkuatan Hybrid Menggunakan GFRP (Glass Fiber Reinforced Polymer) dan Wiremesh

Cited by 3 publications

References 3 publications

Analisis Beton Honeycomb Di Proyek Gw10

Analisis Beton Honeycomb Di Proyek Gw10

Circular Economy of Coal Fly Ash and Silica Geothermal for Green Geopolymer: Characteristic and Kinetic Study

Pengaruh Ikatan Diagonal GFRP Pada Hubungan Balok Kolom Pracetak Terhadap Kekuatan Sambungan

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