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Influence of Steam Curing Temperature on the Characteristic of Self-Compacting Concrete Incorporating Palm Shell Ash: Pengaruh Temperatur Perawatan Uap Terhadap Karakteristik Beton Memadat Mandiri dengan Abu Cangkang Sawit Nurjannah, Siti Aisyah; Muliawan, Sutanto; Nurazizah, Ervi Tri Romayni; Asmarani, Dwi
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 13 No. 1 (2024): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v13i1.235

Abstract

Self-Compacting Concrete (SCC) is proven as durable concrete and applied to constructions. In this paper, a study was conducted to analyze the influence of variations of steam curing temperature (SCT) and water/binder (w/b) ratio on the characteristics of SCC incorporating 10% Palm Shell Ash (PSA) as a partial substitution for cement mass. The SCT was arranged from 25 C to 80 C. The variation of w/b in the compositions of SCC was 0.325, 0.350, and 0.375. The results showed that using PSA, the variation of SCT and the w/b ratio influenced the workability of the fresh concrete. The PSA, SCT, and the w/b ratio affected the concrete compressive strength and mass density. The increased SCT caused a lighter density and greater compressive strength. However, the decreased compressive strength occurred due to an excessive SCT of 70 C and above. The SCT of 60 C, 10% PSA, and w/b ratio of 0.350 in the mixture produced the greatest compressive strength of 36.27 MPa at 28 days of age, while without SCT, the greatest compressive strength of 36.78 MPa was achieved at the age of 28 days containing 10% PSA and w/b ratio of 0.325. It indicated that the w/b ratio was more influential than the SCT on the increase of the SCC compressive strength.
ANALISIS CAMPURAN MUTU BETON K200 DENGAN MENGGUNAKAN LIMBAH ABU AMPAS TEBU SEBAGAI SUBSTITUSI SEMEN DAN NaCl SEBAGAI BAHAN PENGGANTI AIR Mulyadi, Asri; Saloma, Saloma; Nurjannah, Siti Aisyah
Jurnal Teknik Sipil Vol 14 No 1 (2024): Jurnal Teknik Sipil
Publisher : Civil Engineering Study Program Faculty of Engineering, University of Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36546/tekniksipil.v14i1.1305

Abstract

Dalam perkembangan dunia yang semakin maju dan serbah canggih, teknologi beton mempunyai potensi yang luas dalam bidang konstruksi. Hal ini menyebabkan beton banyak digunakan untuk konstruksi bangunan gedung, jalan, jembatan dermaga dan lain-lain. Banyaknya jumlah penggunaan beton dalam konstruksi tersebut mengakibatkan peningkatan kebutuhan material beton, baik itu semen, pasir, maupun koral, sehingga memicu penambangan batuan sebagai salah satu bahan pembentuk beton secara besar-besaran yang menyebabkan turunnya jumlah sumber alam yang tersedia untuk keperluan pembetonan. Memakai material bahan limbah abu ampas tebu sebagai substitusi dalam campuran beton di Indonesia masih belum banyak dilakukan, tetapi limbah abu ampas tebu tersebut digunakan antara lain untuk pengurukan dan sekaligus menjadi pupuk kandang dilokasi perkebunan. Hal ini disebabkan karena bahan baku semen mudah didapat. Namun cepat atau lambat material akan semakin habis sehingga menyebabkan material dari tahun ketahun akan semakin mahal. Berdasarkan dari uraian di atas maka disini timbullah rencana untuk melakukan penelitian inovasi alternatif bahan pengganti material, di sini penulis mencoba pemanfaatan material limbah abu ampas tebu sebagai substitusi semen, dan NaCl sebagai pengganti air, dengan tujuan membandingkan kuat tekan beton normal mutu beton K200 dengan beton memakai bahan limbah abu ampas tebu sebagai pengganti semen dan NaCl sebagai pengganti air. Penelitian dilakukan terhadap beton dengan membandingkan antara beton normal dengan beton yang menggunakan limbah abu ampas tebu sebagai pengganti semen dan NaCl sebagai pengganti air. perlakuan yang diambil pada penelitian ini sebanyak 4 perbandingan yaitu beton normal (BN), beton dengan menggunakan limbah abu ampas tebu 6%, 12%, 18% dari berat semen dan NaCl sebagai pengganti air. Pada penelitian ini benda uji dicetak dengan menggunakan kubus baja ukuran 15cm x 15cm x 15cm. Dari hasil penelitian dan hasil pengolahan data, maka dapat disimpulkan bahwa nilai evaluasi kuat tekan yang dicapai oleh beton tanpa menggunakan material pengganti semen atau beton normal pada umur 28 hari didapat kuat tekan 208,33 kg/cm2, nilai evaluasi kuat tekan yang dicapai oleh beton dengan menggunakan limbah abu ampas tebu 6% dari berat semen dan NaCl sebagai pengganti air kuat tekan pada umur 28 hari didapat 205,31 kg/cm2, nilai evaluasi kuat tekan yang dicapai oleh beton dengan menggunakan limbah abu ampas tebu 12% dari berat semen dan NaCl sebagai pengganti air kuat tekan pada umur 28 hari didapat 203,80 kg/cm2, dan nilai evaluasi kuat tekan yang dicapai oleh beton dengan menggunakan limbah abu ampas tebu 18% dari berat semen dan NaCl sebagai pengganti air kuat tekan pada umur 28 hari didapat 197,76 kg/cm2. Jadi dari hasil evaluasi tersebut beton yang menggunakan limbah abu ampas tebu 6%, 12% dari berat semen dan NaCl sebagai pengganti air masih memenuhi mutu beton K200.
Effect of the Nano-Silica Addition on the Mechanical Properties of Polymer Concrete Septriansyah, Verinazul; Saloma; Nurjannah, Siti Aisyah; Saggaff, Anis; Usman, Arie Putra; Ngian, Shek Poi
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.1.9-17

Abstract

The latest advances in science and technology have positioned nanomaterials at the vanguard of contemporary research. Nano silica (SiO2) is an illustrative example of a nanomaterial extensively utilized in concrete manufacturing due to its properties as a pozzolan. The objective of this study is to elucidate the characteristics of nano silica and its effect on the performance of polymer concrete through experimental methods. X-ray diffraction (XRD) tests indicate that nano silica exhibits a high amorphous phase. Consequently, nano silica enhances the C-S-H gel formation reaction, producing more robust and denser specimens. The maximum compressive strength reached 45.23 MPa when adding 0.4% nano-silica with a specific gravity of 1573.33 kg/m3. For comparison, concrete without nano silica had a maximum compressive strength of 40.05 MPa with a particular gravity of 1610.67 kg/m3. Observation using a scanning electron microscope (SEM) showed that the nano-silica mixture exhibited excellent particle distribution as an activating agent that could enhance the strength of the specimens. Nevertheless, the observed reduction in compressive strength might be affected by several factors, including particle clusters and the presence of compounds carried by the fine aggregates that influence the mechanical properties of polymer concrete. Integrating nano-silica is pivotal in enhancing the compressive strength and reducing the specific gravity of polymer concrete specimens. The increased strength and decreased specific gravity render nano silica a promising additive for polymer concrete applications.
Effect of Nanosilica Addition and Temperature on Durability of Polymer Mortar in Seawater Environment Septriansyah, Verinazul; Hasyim, Saloma; Nurjannah, Siti Aisyah
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.847-855

Abstract

This study examines the effect of nano-silica addition and temperature variation on the durability of polymer mortar exposed to seawater. We investigated three specimen variations: polymer mortar without nanosilica (MP), polymer mortar with 0.4% nanosilica added (MP N 0.4%), and nanosilica polymer mortar with 85◦C heating (MP N 0.4% T 85◦C). Testing methods included cyclic and static immersion for 90 days in Tanjung Pandan, Bangka Belitung, followed by characterization through specific gravity, compressive strength, SEM (Scanning Electron Microscopy), FTIR (Fourier Transform Infrared Spectroscopy), and XRD (X-ray diffraction) analysis. Results showed that 0.4% nano-silica addition combined with 85◦C heating treatment significantly increased compressive strength to 51.78 MPa in cyclic immersion, compared to 38.17 MPa for standard polymer mortar. SEM analysis revealed a more compact microstructure with reduced porosity in nano-silica specimens, while FTIR confirmed the formation of new chemical bonds between the epoxy matrix and silica particles. XRD testing identified the presence of SiO2 crystalline phase and nano-silica distribution in amorphous form throughout the composite matrix. The optimized polymer mortar demonstrated superior durability in seawater environments, maintaining specific gravity stability and resistance to degradation after prolonged immersion, outperforming conventional cementitious materials in marine applications.
Seismic performance analysis of building structures using high damping rubber bearings Anggara, Veron Bella; Rosidawani, Rosidawani; Hanafiah, Hanafiah; Nurjannah, Siti Aisyah; Setiawan, Andri
Gema Wiralodra Vol. 15 No. 1 (2024): Gema Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v15i1.659

Abstract

The problem in this study is how the performance of building structures that have horizontal irregularities using fixed base structures and High Damping Rubber Bearing (HDRB) basic isolated structures. As well as how the performance of building structures compares with horizontal irregularities using HDRB compared to fixed base structures. The purpose of the study was to analyze the effect of the performance of reinforced concrete building structures with horizontal irregularities using fixed base structures and HDRB type basic isolation structures, as well as analyze the comparison of structural performance responses when seismic forces occur on a fixed base and base isolation structures using HDRB in terms of natural periods, shape modes, mass participation, basic shear forces (base shear), story drift, horizontal irregularity, and the influence of the p-delta. This research method is to carry out equivalent static analysis at the initial stage of analysis to obtain minimum force values ​​in the dynamic analysis of the response spectrum in accordance with the provisions of SNI 1726:2019 with the help of Etabs software version V.19. After obtaining the force in the response spectrum analysis results, proceed with designing the structural element reinforcement. Then final stage analysis with non-linear time history analysis (NLTHA) to assess the performance of the building structure. The dynamic analysis of the spectrum response uses spectrum response data for the city of Bengkulu taken from RSA 2021. Meanwhile, the NLTHA analysis uses 7 pairs of horizontal acceleration components selected and matched from individual recordings of MCER ground motion events.The results of this study show that the performance of building structures that have horizontal irregularities with HDRB has better performance than fixed base structures. Comparison of the structure's performance response during seismic forces from several parameters such as natural period, mode shapes, mass participation, base shear, story drift, horizontal irregularity, and p-delta influence. Based on the parameters of the performance of the structure, it proves that the performance of building structures with HDRB has better performance than fixed base. Based on the results of research HDRB can improve the performance of structures that have horizontal irregularities.
Sifat Mekanik Beton Dengan Substitusi Crumb Rubber Hasil Aqua-Thermal Treatment Prasetiya, Muhammad Anggara Adji; Usman, Arie Putra; Nurjannah, Siti Aisyah; Gunawan , Jose Andre
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i7.61157

Abstract

Indonesia, located in a seismic-prone region, requires innovative concrete materials with high ductility and deformability, especially for critical elements such as beam–column joints. Crumb rubber concrete (CRC), produced by partially substituting fine aggregate with crumb rubber from recycled waste tires, offers this potential while supporting sustainable construction practices. This study aims to evaluate the effect of aqua-thermal treatment (washing and heating at 150°C for 1 hour) on the mechanical properties of CRC, including compressive strength, splitting tensile strength, elastic modulus, and Poisson’s ratio. The research method involved experimental testing on CRC cylindrical specimens with crumb rubber substitutions of 5% and 10% after 28 days of curing. Results show that CRC-5 achieved an average compressive strength of 34.25 MPa and splitting tensile strength of 2.74 MPa, higher than CRC-10. The elastic modulus of CRC-5 was 11,407.67 MPa, increasing to 12,843.33 MPa in CRC-10, although still lower than that of conventional concrete. Poisson’s ratio was recorded at 0.171 (CRC-5) and 0.230 (CRC-10), indicating greater deformability. Overall, CRC with moderate substitution (≈5%) and aqua-thermal treatment meets the structural concrete standard per SNI 2847:2019 and is considered effective for beam–column joints requiring good ductility. Further research is needed to optimize the balance between strength, stiffness, and ductility, for example through fiber reinforcement or additive materials.
The Influence of Structure Height and Use of Shear Walls on the Behavior of Reinforced Concrete Building Structures Fauzan Hanif, Muhammad; Rosidawani, Rosidawani; Nurjannah, Siti Aisyah; Hanafiah, Hanafiah
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 6 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i6.1124

Abstract

Bengkulu is one of the areas prone to earthquakes. The application of earthquake-resistant reinforced concrete buildings must be done to minimise lateral forces due to earthquakes. The reinforced concrete structure system commonly used to withstand these lateral forces is a double system using sliding walls. Shear walls are structural elements that can affect rigidity and withstand lateral loads due to earthquakes. In addition, the structure's height will affect the load acting on the structure and the dimensions of the planned structural elements. This study aims to analyse the influence of structural height and the use of sliding walls on the behaviour of reinforced concrete building structures. The analysis in this study used spectrum response method analysis with the help of the ETABS application. Results show that the use of shear walls makes the structure stiffer at lower levels, and the higher the structure will result in the period of the structure, the primary shear force, the deviation between levels, and the influence of P-delta increases.
IMPLEMENTASI PENDIDIKAN KARAKTER DALAM PEMBELAJARAN KITAB AKHLAK LIL BANIN DI MTS MIFTAHUL ULUM PUNTIR PURWOSARI Nurjannah, Siti Aisyah; Muhammada, Muhammada; Ma'ruf, Ahmad; Sholikhudin, M. Anang; pengelola, pengelola
Tasyri` : Jurnal Tarbiyah-Syari`ah-Islamiyah Vol. 32 No. 01 (2025): April 2025
Publisher : LPPM STAI Ihyaul Ulum Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70281/tasyri.v32i01.857

Abstract

Penelitian ini mempunyai latar belakang kepada kita untuk mendidik karakter sejak dini dan bersandar pada dua sumber pokok ajaran Islam, yaitu Al-Qur’an dan sunnah Nabi, karena pada zaman sekarang banyak peserta didik atau santri yang melanggar aturan yang berkenaan dengan akhlak, padahal seseorang akan dikatakan memiliki iman yang benar dan sesuai syariat Islam jika ia memiliki karakter atau akhlak yang baik.oleh karena itu di MTs Miftahul Ulum Puntir Menuntut siswa agar mempunya akhlak yang baik sesuai dengan motto adapun Fenomena yang ada dalam kehidupan masyarakat saat ini banyak kita jumpai akhlak para generasi muda mengalami dekadensi. Banyak faktor yang melatarbelakangi fenomena ini. Salah satu faktor terpenting adalah arus globalisasi yang tak terkendali. Sebagian besar generasi muda saat ini menghindari mencintai dan mempraktekkan budaya negara yang lebih ketimuran. Mereka lebih didewasakan dan secara lahiriah mengikuti budaya barat. Upaya untuk menerapkan moralitas antargenerasi dalam semangat Islam dapat dilakukan dengan berbagai cara. karena pembentukan karakter di masa kecil mempengaruhi karakter seseorang di masa dewasa yang akan datang