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Pengaruh Penambahan Serat Baja Terhadap Kuat Lentur Balok Beton Bertulang pada Beton Mutu Normal Asyrofi Miranda Putra; Vera Agustriana Noorhidana; Mohd Isneini
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Penelitian pada skripsi ini merupakan studi eksperimental untuk menyelidiki pengaruh penambahan serat baja terhadap kuat lentur balok beton bertulang pada beton mutu normal. Penelitian ini juga membandingkan pola retak dan pola keruntuhan balok beton bertulang pada beton tanpa serat dan beton dengan campuran serat baja. Penelitian ini menggunakan sampel balok beton bertulang dengan ukuran 15 cm x 19 cm x 170 cm dengan 2 tulangan lentur D-10 mm (2D-10mm) dengan 1 buah sampel balok setiap volume fraction (Vf) 0%, 0,5%, 1% dan 1,5%. Sampel balok beton bertulang mempunyai bentang diantara dua tumpuan sederhana sepanjang 150 cm, dan diuji dengan dua beban titik secara bertahap dari nol sampai dengan runtuh. Pengujian tiap sampel dilakukan 28 hari setelah pengecoran. Dari hasil penelitian didapatkan: (1) Hasil uji kuat tekan tidak mengalami perbedaan yang signifikat dengan adanya penambahan serat baja., (2) Kuat tarik lentur balok beton tertinggi terdapat pada Vf 1,5% dan mengalami peningkatan sebesar 281,42% dari Vf 0%., dan (3) Kuat lentur balok beton bertulang dengan beban maksimum terdapat pada Vf 1,5% dan mengalami peningkatan sebesar 56,64% dari Vf 0%. Penambahan serat baja pada balok beton bertulang menyebabkan balok tersebut menjadi lebih kaku, penambahan serat juga dapat memperbaiki sifat getas pada beton. Kata kunci : Serat Baja, Balok Beton Bertulang, Kuat Tekan, Kuat Tarik Lentur, dan Kuat lentur .

Peran Semen Portland Tipe I dan Portland Komposit Atas Ketidaksesuaian Perkembangan Kuat Tekan Pada Beton Normal Terhadap PBI 1971 Prima Sandy Yonanda; Chatarina Niken DWSBU; Vera Agustriana Noorhidana
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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The code about concrete compressive strength progress is presented on Table 4.1 of PBI 1971. But the concrete compressive strength development in many current concrete construction projects often face one similar major problem which is the incompability between concrete compressive strength progress compared to PBI 1971. To identify that problem, this research was done by creating 160 cube concrete samples from OPC and 120 cube concrete samples from PCC by using 4 different PCC and OPC brands that consist of Dynamix, Baturaja, Tigaroda and Padang. Moreover, the samples are consists of 2 different targeted concrete compressive strength which are K250 and K400 and the samples were tested in the age of 7, 14, 21, 28 and 56 days. Aside of that, the chemical properties in each of used cements that consist of Tricalcium Silicate (C3S), Dicalcium Silicate (C2S), Tricalcium Aluminate (C3A) and Tetracalcium Aluminoferrit (C4AF) were also tested to identify the impact of chemical properties of cements to the compressing strength progress of all samples.Based on the research, it was identified that the chemical properties of cements that consist of C3S, C2S, C3A and C4AF were very influential in the process of compressive strength progress of all samples. In addition, the coeffiecients presented on SNI-15-2049-2015 Chapter 5 Table 5 used to calculate the percentage of C3S, C2S, C3A and C4AF need further reviews. Last, it was known that the compressing strength development of both OPC and PCC samples were not aligned to the PBI 1971 estimation. Besides, the procedure of all samples have followed the British Standard and ASTM regulation. In conclution, based on the research PBI 1971 was no longer relevant to be used as the reference for concrete compressing strength progress. Keywords: Concrete, compressive strength progress, cement chemical properties, incompability, tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite.

Pengaruh Penambahan Serat Baja Terhadap Kuat Lentur Balok Beton Bertulang pada Beton Mutu Normal Asyrofi Miranda Putra; Vera Agustriana Noorhidana; Mohd Isneini
Jurnal Rekayasa Sipil dan Desain Vol 8, No 2 (2020): Edisi Juni 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Penelitian pada skripsi ini merupakan studi eksperimental untuk menyelidiki pengaruh penambahan serat baja terhadap kuat lentur balok beton bertulang pada beton mutu normal. Penelitian ini juga membandingkan pola retak dan pola keruntuhan balok beton bertulang pada beton tanpa serat dan beton dengan campuran serat baja. Penelitian ini menggunakan sampel balok beton bertulang dengan ukuran 15 cm x 19 cm x 170 cm dengan 2 tulangan lentur D-10 mm (2D-10mm) dengan 1 buah sampel balok setiap volume fraction (Vf) 0%, 0,5%, 1% dan 1,5%. Sampel balok beton bertulang mempunyai bentang diantara dua tumpuan sederhana sepanjang 150 cm, dan diuji dengan dua beban titik secara bertahap dari nol sampai dengan runtuh. Pengujian tiap sampel dilakukan 28 hari setelah pengecoran. Dari hasil penelitian didapatkan: (1) Hasil uji kuat tekan tidak mengalami perbedaan yang signifikat dengan adanya penambahan serat baja., (2) Kuat tarik lentur balok beton tertinggi terdapat pada Vf 1,5% dan mengalami peningkatan sebesar 281,42% dari Vf 0%., dan (3) Kuat lentur balok beton bertulang dengan beban maksimum terdapat pada Vf 1,5% dan mengalami peningkatan sebesar 56,64% dari Vf 0%. Penambahan serat baja pada balok beton bertulang menyebabkan balok tersebut menjadi lebih kaku, penambahan serat juga dapat memperbaiki sifat getas pada beton.

Study Of The Behavior Of Anchor Connections In Concrete Based On Finite Element Analysis Mildariezka Salsabila Ramadhan; Fikri Alami; Mohd. Isneini; Vera Agustriana Noorhidana
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 6, No 1 (2023): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.6.1.1-11

The anchorage system is one of the techniques used to connect a new structure to the existing structure. The purpose of this study was to determine the behavior between the anchorage connection model in the existing column structure and the new beam using an adhesive anchoring system, and the monolithic column-beam structure model using a program based on the finite element method, Abaqus CAE. The analysis was executed on two models, the monolithic construction model and the anchor joint connection structure model. The same load was applied for both models at the ends of the beams. In the monolithic construction model, the interaction relationship between the column and beam is using a tie constraint, while the structure of the anchor joint connection was using surface-to-surface contact. The epoxy model in anchor joint structure were using a cohesive behavior-contact relationship. As the results of the analysis, it can be concluded that the monolithic construction has stiffer joints compared to the structures with anchor joint connections, it can be seen from the displacement value of monolithic construction is 4.263 mm meanwhile structure with anchor connection is 5.38 mm. The crack pattern in the monolithic construction is in the column face on the area around the beam connection, while in the anchor connection, the crack pattern forms a cone in the area around the column anchor.

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