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All Journal Journal of Geoscience, Engineering, Environment, and Technology Dinamisia: Jurnal Pengabdian Kepada Masyarakat Martabe : Jurnal Pengabdian Kepada Masyarakat JURNAL SAINTIS Abdimas Galuh : Jurnal Pengabdian Kepada Masyarakat Community Development Journal: Jurnal Pengabdian Masyarakat JURNAL TEKNIK SIPIL UNAYA Journal of Infrastructure and Civil Engineering SAINSTEK Jurnal Inovtek Seri Teknik Sipil dan Aplikasi (TekLA)

Roza Mildawati

Universitas Islam Riau

Author-ID : 2444117

Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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The Benefits of Adding Corn Stalk Ash as a Substitution of Some Cement Against of Compressive Strength Concrete Sri Hartati Dewi; Roza Mildawati; Tio Perdana
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019)
Publisher : UIR PRESS

Concrete is a very important building material used in the world of construction services, and it is generally known that the good and bad properties of concrete can be seen from its compressive strength. Concrete consists of Portland Cement (PC) or other hydraulic cement, fine aggregates, coarse aggregates, and water, with or without using additional materials. Cement is one of the main mixtures of concrete constituents composed of natural resources such as lime (CaO), Silica (SiO₃), alumina (Al2O₃), little magnesia (MgO), and alkali. Silica is also found in corn. according to (Roesmarkam and Yuwono, 2002) corn plants have a Silica content of 20.6%. This study aims to determine the effect of utilization of corn stalk ash on compressive strength and modulus of elasticity of concrete. Cornstalk ash is used as a partial substitute for cement, with a mixture composition of 2%, 4%, 6%, 8%, and 10%. This study uses SNI 03-2834-2000 for mix design, with the added ingredient of 0.25% sikament NN. Cylindrical test specimen size (150 mm x 300 mm), the specimen was treated and tested at 28 days. Based on research using corn stalk ash 2%, 4%, 6%, 8%, and 10%. either without or using sikament NN the highest compressive strength at 8% is 20.8 Mpa and 20.4 Mpa, and decrease in usage of 10% corn stalk ash which is 18.2 Mpa and 18, 4 Mpa. The highest elastic modulus without or with sikament NN present in 8% ie 21656.14 Mpa and 21607.52 MPa. Modulus of Elasticity value decreased in the use of corn stalks 10% ash is 20366.28 Mpa and 20569.59 MPa. Based on the research, corn stalk ash can replace the role of part of cement in construction using corn stalk ash 8%.

Effects of Corn Stalks Ash as A Substitution Material of Cement Due to the Concrete Strength of Rigid Pavement Roza Mildawati; Anas Puri; M. Zaky Handayani
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 1 (2022): JGEET Vol 07 No 01 : March (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.1.4681

Cement is an adhesive material for concrete mixtures in addition to water, fine and coarse aggregates. One of the main ingredients of cement is silica (SiO2) which is originated from the earth's crust. Silica is also available in plants such as corn stalks. This research is aimed to utilize the corn stalk ash (CSA) as an alternative substitution for some cement in concrete for the rigid pavement of road construction. According to the Indonesian standard, the flexural tensile strength should be exceeded at least 4.5 MPa. The flexural tensile strength has also a correlation due to compressive strength. The concrete materials consisted of the coarse aggregate (river crushed stone) from Kampar River and Danau Bingkuang sands from Kampar District of Riau Province, and Portland Composite Cement from Semen Padang. The CSA was made by burning the dried corn stalks in a steel cylinder can over 24 hours. The content of CSA was varied by 0%, 5%, 7% and 9%. The compressive strength design of concrete was 31,3 MPa. Testing procedures were based on the Indonesian Standard for concrete. The tested specimens have consisted of cube specimens (150 mm x 150 mm x 150 mm) for compressive tests, and beam specimens (150 mm x 150 mm x 600 mm) for flexural strength tests. All specimens were tested on 28 days-age. The results show that CSA can be used as a partial substitution of cement in concrete. The addition of CSA tends to increase the compressive strength of concrete instead of its flexural tensile strength. The optimum content of CSA was 7% and resulted in an 8.0% and 6.9% increase in compressive and flexural tensile strength due to design respectively. Compressive and flexural tensile strength fulfilled the standard. Flexural tensile strength is obtained by 15% of the compressive strength. Cornstalk ash can be used as a substitution of cement for rigid pavement concrete. It can reduce the utilization of cement and will be potentially cost efficiency.

Perbandingan Kuat Tekan Dan Kuat Lentur Beton Mutu Tinggi Dengan Menggunakan Berbagai Merk Semen Di Kota Pekanbaru: Comparison of the Strength and Strength of Bending of High Quality Concrete by Using Various Brands Cement in Pekanbaru City Roza Mildawati
JURNAL SAINTIS Vol. 18 No. 1 (2018)
Publisher : UIR Press

[ID] Concrete is a very popular building material used in the world of construction services, consisting of a mixture of Portland Cement (PC) or other hydraulic cement, fine aggregates, coarse aggregates and water, with or without using additional materials. The quality of materials such as cement also greatly affects the strength of the concrete after hardening, so the selection of cement quality must be in accordance with the concrete planning regulations in order to obtain optimal results. In Indonesia there are many new cement factories that produce to meet the needs of the community, one of which is the Conch brand cement. So in connection with the above, Conch cement can be examined to compare the value of compressive strength and flexural strength with old cement, namely cement Padang, Tiga Roda, Holcim and Bosowa which are generally always used in concrete planning at this time.The purpose of this study was to determine the comparison of compressive strength and flexural strength of the concrete and the multiplier between cement Padang, Three Wheels and Conch at 28 days of age. In this study using the method SNI 03-2834-2000. With cylindrical test specimens (150 mm x 300 mm) and size beams (150 mm x 150 mm x 600 mm) three specimens were made for each cement.The maximum concrete compressive strength is found in Padang cement with a compressive strength of 45.86 Mpa, for the minimum compressive strength found in Tiga Roda cement with compressive strength value of 40.19 Mpa and for the compressive strength of cement Conch there is a second with compressive strength value 42.84 Mpa. From the explanation above, the results of 28 days of concrete compressive strength with each cement brand still not reached the planned concrete compressive strength of 38 MPa. The maximum concrete flexural strength is found in Padang cement with a flexural strength value of 5.03 Mpa, for a minimum flexural strength value found in Tiga Roda cement with a flexural strength value of 3.96 Mpa and for the value of Conch cement compressive strength there is a second with flexural strength 4.43 Mpa. From the explanation above, the results of 28 days of concrete flexural strength with each cement brand that has not reached the 4.4 Mpa plan, namely the three-wheeled cement brand. [EN] Concrete is a very popular building material used in the world of construction services, consisting of a mixture of Portland Cement (PC) or other hydraulic cement, fine aggregates, coarse aggregates and water, with or without using additional materials. The quality of materials such as cement also greatly affects the strength of the concrete after hardening, so the selection of cement quality must be in accordance with the concrete planning regulations in order to obtain optimal results. In Indonesia there are many new cement factories that produce to meet the needs of the community, one of which is the Conch brand cement. So in connection with the above, Conch cement can be examined to compare the value of compressive strength and flexural strength with old cement, namely cement Padang, Tiga Roda, Holcim and Bosowa which are generally always used in concrete planning at this time.The purpose of this study was to determine the comparison of compressive strength and flexural strength of the concrete and the multiplier between cement Padang, Three Wheels and Conch at 28 days of age. In this study using the method SNI 03-2834-2000. With cylindrical test specimens (150 mm x 300 mm) and size beams (150 mm x 150 mm x 600 mm) three specimens were made for each cement.The maximum concrete compressive strength is found in Padang cement with a compressive strength of 45.86 Mpa, for the minimum compressive strength found in Tiga Roda cement with compressive strength value of 40.19 Mpa and for the compressive strength of cement Conch there is a second with compressive strength value 42.84 Mpa. From the explanation above, the results of 28 days of concrete compressive strength with each cement brand still not reached the planned concrete compressive strength of 38 MPa. The maximum concrete flexural strength is found in Padang cement with a flexural strength value of 5.03 Mpa, for a minimum flexural strength value found in Tiga Roda cement with a flexural strength value of 3.96 Mpa and for the value of Conch cement compressive strength there is a second with flexural strength 4.43 Mpa. From the explanation above, the results of 28 days of concrete flexural strength with each cement brand that has not reached the 4.4 Mpa plan, namely the three-wheeled cement brand.

Pengaruh Penambahan Limbah Plastik Sebagai Campuran Beton Terhadap Kuat Tekan dan Daya Serap Air Pada Paving Block Roza Mildawati; Sri Hartati Dewi; Fajri Syefringga
Jurnal Teknik Sipil Unaya Vol 8, No 1 (2022): Januari 2022
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v8i1.2622

PENANGANAN GENANGAN SALURAN DRAINASE SEBAGAI UPAYA MENJAGA KESEHATAN MASYARAKAT PERUMAHAN YEPUPA UTAMA PERMAI DI KELURAHAN AIR DINGIN, PEKANBARU Anas Puri; Roza Mildawati; Sri Hartati Dewi; Vella Anggreana; Harits Fajri; Indra Dipares
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 4 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i4.1260-1267

This community service activities was aimed to give preventive solution due to drainage channel inundation of As-Salaam Utama street in Yepupa Utama Permai housing area, Air Dingin Village, Bukitraya District, Pekanbaru City. Thus preventing the potential area to become a source of disease and a nest of mosquito larvae and can provide residents convenience. There were 3 points of inundation problem, namely Location 1 in the conner of As-Salaam Utama street was resolved by replacing the rectangular culvert and adjusting its elevation. Location 2 was a inundation of As-Salaam IV street was also resolved as Location 1. Location 3 was in the same condition as Loacation 2, and was handled by making a new drainage channel across the road with adjusting its elevation. The results of the activities achieved at Location 1, the inundation of water during heavy rains have been handled quite well because water can flow towards the South quite smoothly. The water flow from the North of the channel can flow smoothly to the South to the outlet after handling Location 2. Location 3 was no more puddles on the road when it rains heavely after handling. The traffic during heavy rains remains smooth and reduces the potential pavement damages.

PENYULUHAN TENTANG PENGELOLAAN SAMPAH MENJADI PRODUK YANG BERNILAI GUNA Vella Anggreana; Syarifah Sarah Alwiah; Neneng Purnamawati; Roza Mildawati; Harmiyati Harmiyati
Abdimas Galuh Vol 3, No 1 (2021): Maret 2021
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v3i1.5097

Sampah telah menjadi masalah yang belum dapat diatasi di Indonesia. Pengelolaan sampah belum secara maksimal dilakukan. Penanganan permasalahan sampah di Kota Pekanbaru harus dimulai dari sumbernya yaitu rumah tangga dengan melibatkan partisipasi aktif masyarakat. Tujuan kegiatan yaitu memberikan pemahaman dan kemampuan masyarakat dalam melakukan pengelolaan sampah, sehingga memiliki kesadaran sosial untuk merubah perilaku dalam mengolah sampah. Pengurangan sampah dengan metoda 3R (Reduce, Reuse, Recycle) berbasis masyarakat lebih menekankan kepada cara pengurangan sampah yang dibuang oleh individu, rumah, atau kawasan seperti RT ataupun RW. Pengelolaan sampah yang efektif di rumah dapat membuat kita terbiasa mengatur alur masuk-keluar sampah. Tidak ada lagi sampah yang tergeletak begitu saja. Setiap sampah akan ditempatkan sesuai peruntukannya. Sampah organik diproses menjadi kompos, sedangkan sampah plastik/kaleng/botol dibersihkan dan dikirimkan untuk didaur ulang. Kegiatan pengelolaan sampah efektif ini akan membuat lingkungan menjadi bersih dan nyaman.

Pengaruh Campuran Abu Batang Jagung Dan Semen Sebagai Bahan Untuk Stabilisasi Tanah Lempung Organik Terhadap Nilai California Bearing Ratio (CBR) Roza Mildawati; Sri Hartati Dewi; Mulyono Mulyono
SAINSTEK Vol. 10 No. 1 (2022)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v10i1.6

Provinsi Riau secara umum memiliki wilayah dengan kondisi tanah gambut dengan cakupan yang cukup luas di Pulau Sumatera yaitu ±4,04 jt Ha atau 56,1% dari jumlah lahan gambut di Pulau Sumatera. Pembangunan jalan raya yang berada diatas tanah gambut harus memperhatikan kondisi tanah dasarnya terlebih dahulu agar jalan yang dibangun dapat bertahan lama. Tanah gambut yang digunakan diambil dari Desa Sadar Jaya, Siak Kecil, Bengkalis, Riau dan akan distabilisasi dengan menggunakan abu batang jagung (ABJ) dan semen sebagai bahan campuran stabilisasi. Metode stabilisasi tanah merupakan salah satu cara yang sering digunakan untuk memperbaiki kondisi tanah asli dengan kuat dukung tanah yang kurang bagus menjadi lebih baik lagi. Variasi campuran yang digunakan yaitu 2% ABJ, 5% semen dan 4% ABJ, 10% semen. Masa waktu pemeraman yang digunakan 0, 4, dan 7 hari pemeraman. Nilai CBR tanah asli pada pemeraman 0 hari sebesar 13,33%, 4 hari sebesar 16,04%, dan 7 hari sebesar 16,88%. Untuk nilai CBR pada tanah campuran 2% ABJ, 5% semen pada masa pemeraman 0 hari sebesar 13,75%, 4 hari sebesar 18,63% dan 7 hari sebesar 19,80%. Untuk nilai CBR pada tanah campuran 4% ABJ, 10% semen pada masa pemeraman 0 hari sebesar 13,95%, 4 hari sebesar 19,59% dan 7 hari sebesar 20,01%. Dari hasil pengujian dapat disimpulkan bahwa nilai CBR tertinggi yaitu pada pemeraman 7 hari baik untuk tanah asli maupun untuk tanah campuran. Lama waktu pemeraman menjadi faktor yang mempengaruhi besarnya nilai CBR.

Perbandingan Dua Jenis Agregat Daerah Yang Berbeda Terhadap Karakteristik Marshall Pada Aspal Porus Sri Hartati Dewi; Roza Mildawati; Adi Nurhakim
Sainstek (e-Journal) Vol. 9 No. 1 (2021)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar

Aspal Porus (Porous Asphalt) merupakan campuran aspal bergradasi terbuka dengan persentase agregat kasar lebih dari 85%, sehingga menyediakan rongga udara yang besar. Rongga udara ini diharapkan dapat meloloskan air jika hujan, Dalam pembuatan perkerasan tersebut menggunakan agregat yang berasal dari dua daerah yang berbeda, di provinsiRiau bisadidapatkan di PTVirajaya. Oleh karena itulah pemanfaatan material lokal untuk dapat membandingkan penggunaan agregat Pangkalan dan xiii Koto Kampar yang terdapat pada propinsi Riau terhadap Aspal Porus (Jauhari,2013). Penelitian ini dilakukan dengan metode marshall (SNI 06-2489-1991) dan menggunakan spesifikasi AAPA 1997.Komposisi campuran aspal porus penggunaan agregat pangkalan diperoleh agregat kasar 11,99%,agregat sedang 84,08%,abu batu 1,91% dan pasir 2,02 % dan penggunaan agregat xiii koto kampar diperoleh agregat kasar;17,14% agregat sedang 80,46%, abu batu1,88% dan pasir 0,52%.Dari hasil pengujian agregat di Laboratorium, nilai kadar aspal rencana yang didapat 4,0 %; 4,5%; 5%; 5,5%; dan 6% untuk campuran aspal porus denganFiller Abu batu 100%. Hasil yang diperoleh nilai karakteristik marshall (stabilitas, Flow, VIM, MQ, VMA, VFA)dan Permeabilitas. Hasil Perbandingan penggunaan agregat Pangkalan dan agregat xiii koto kampar sama-sama memberikan hasil yang baikpada kadar aspal 4% dan 4,5% yang memenuhi spesifikasi Aspal Porus sesuaiAAPA, 1997dan kadar aspal optimum penggunaan agregat Pangkalan adalah 4,40 % sedangkan xiii Koto Kampar 4,35%.

Upaya Pencegahan Pencemaran Akibat Limbah Rumah Tangga di Desa Empat Balai Kecamatan Kuok Kabupaten Kampar Roza Mildawati; Anas Puri; Sri Hartati Dewi; Heri Ahmadi; Muhammad Ferry Ardianto; Givary Yogi Erlanda
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 6 (2022): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v6i6.11897

This community service activity aims to provide counseling on how to pollute household waste that occurs in the Village of Empat Balai Kec. Kuok Kab. Kampar, thus preventing the potential to become a source of disease and damage to the environment due to household waste that is simply dumped into the environment such as household liquid waste and garbage that is directly dumped into the river without thinking about the impact on the environment, health and economy. The target to be achieved is to make the public aware of the importance of preventing environmental pollution due to household waste, reducing the potential for environmental pollution due to household waste and producing a clean and safe environment from household waste so as to create a clean and comfortable environment. By doing this outreach, it can help the surrounding community as well as provide comfort for the community in the occurrence of household waste water pollution. For the next program, it is important to conduct outreach by surveying directly the place where water is polluted due to household waste.

Sosialisasi Dan Rancangan Jaringan Pipa Air Bersih Di Desa Kampung Pinang Kecamatan Perhentian Raja Kabupaten Kampar roza mildawati; Yolly Adriati; Rizdqi Akbar Ramadhan; Riskon Ramadhan; Dhany Fauzan Azhimy
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2023): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v7i2.11446

The need for clean water in Indonesia is still not distributed evenly. Clean water is not distributed evenly due to obstacles and problems. Based on observations in Kampung Pinang Village, Kampar Regency, there is already a clean water reservoir, but in the reservoir there is no clean water distribution system available to homes to meet community needs. To analyze the problems and efforts to complete this research, the researcher uses a literature study that is used to obtain clarity of concepts in research, namely by obtaining books, journals, and previous research, which contains the basics of theory and calculation formulas, and obtains data that support in completing this research, namely secondary data in the form of population data, village maps and other data obtained directly from parties related to this research. The planning of a clean water system network using EPANET 2.0 software in hamlet 1, Kampung Pianang village, Kampar Regency is carried out using the gravity method and using a pump where the water source comes from an existing reservoir. The projected population of Kampung Pinang until 2030 is 1385 people, so by analyzing water needs, it is found that the need for clean water in 2030 is 1.742 l/second. From the simulation results of the EPANET 2.0 software using the gravity method on the clean water network in the village of Kampung Pinang, the highest pressure value is 11.97 m at junction J4 and the lowest pressure is 3.80 m at junction J20. Meanwhile, all pressure values using a pump have met the requirements. The highest velocity (velocity) is 0.14 m/s on pipe P1 and pipe P2 and the lowest speed is 0.01 m/s on pipe P12. The highest energy loss (headloss) is 0.39 m/km in the P1 and P2 pipes and the lowest energy loss is 0.01 m/km in the P12 pipes.

Co-Authors Adi Novriansyah Adi Nurhakim Anas Puri Anas Puri Anas Puri Anas Puri Arief Rifa’i Harahap Bismi Annisa Dhany Fauzan Azhimy Fadel Ibnu Muliya Alqudrisyam Fajri Syefringga Firdaus Agus Fitrianti Fitrianti Fitrianti Fitrianti Fitrianti Fitrianti* Givary Yogi Erlanda Harits Fajri Harmiyati Harmiyati Haznil Zainal Heri Ahmadi Indra Dipares Kamarudin, Kamarudin Kiki Joesyiana M. Zaky Handayani Makorohim, M Fransazeli Muhammad Farhan Akbar Muhammad Ferry Ardianto Mulyono Mulyono Nadila Febriani Nanik Yuzalmi Neneng Purnamawati Puji Astuti Rafil Arizona Revina Evellyn Anggellika Rheda Pratama Riska Auliyasari Riskon Ramadhan Rizdqi Akbar Ramadhan Rizqi Wahyu Hidayat Sasmarianto Sasmarianto Sri Hartati Dewi sri wahyuni Syarifah Sarah Alwiah Tio Perdana Vella Anggreana Vella Anggreana Yoga Raeko Aminnulloh Yolly Adriati

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