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APLIKASI SUSPENSI SEMEN UNTUK MENINGKATKAN BIOPROSPEKSI BAMBU SEBAGAI BAHAN BANGUNAN LOKAL PEDESAAN , Nastain; Nugroho, Paulus Setyo; , Yanto
Prosiding Vol 3, No 1 (2012)
Publisher : Prosiding

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

Abstract

Kelemahan bambu untuk bahan bangunan adalah bambu rentan terhadap gangguan jasad renik, serangga, perubahan temperatur, dan air hujan. Sedangkan usaha pengawetan yang banyak dilakukan dinilai kurang effektif, karena memerlukan waktu yang lama, menimbulkan bau, dan merusak warna bambu atau garis-garis dekorasi bambu. Penelitian ini dilakukan guna menghasilkan bambu yang kuat, absorbsi kecil, tidak berbau, dan tetap memiliki garis-garis dekorasi, tetapi dengan proses waktu pengawetan yang cepat. Metode penelitian dilakukan dengan cara modifikasi metode Baucherie, yaitu dengan cara mengalirkan suspensi semen dengan bantuan kompresor ke dalam bambu segar atau bambu baru tebang, dimana pori bambu masih terbuka sempurna. Proses suspensi akan membuat pori-pori bambu terisi oleh semen dan akan mengeras. Variasi campuran suspensi semen : air ditetapkan sebesar 1:8, 1:7, 1:6, 1:5, dan 1:4. Pengujian dilakukan guna mengetahui campuran suspensi optimal dan perubahan karakteristik fisik dan mekanika bambu setelah tersuspensi semen. Hasil pengujian yang dilakukan terhadap 3(tiga) jenis bambu yaitu Ampel, Wulung, dan Tali menunjukan bahwa, kadar campuran suspensi semen optimal adalah sebesar 1:7 dan akan meningkatkan nilai kerapatan, kuat tekan, dan kuat lentur bambu masing-masing sebesar 47,76% ; 25,84% dan 36,02%, dan menurunkan nilai absorbsi dan elastisitas bambu masing-masing sebesar 20,13% dan 20,84% terhadap nilai karakteristik bahan bambu awal sebelum disuspensi.
POTENSI SUMBERDAYA MATA AIR ALAMI KOMPLEKS AWAR-AWAR SUMAMPIR UNTUK PERENCANAAN SUMBER AIR BERSIH PEDESAAN POTENCY OF WATER SPRING RESOURCES AT AWAR-AWAR COMPLEX, SUMAMPIR, FOR DESIGNING RURAL CLEAN WATER RESOURCES , Nastain; Hardini, Probo
Pembangunan Pedesaan Vol 5, No 3 (2005)
Publisher : Pembangunan Pedesaan

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Abstract

This research was conducted to know quality potential, discharge, and flowing energy of water spring of Kompleks Awar-awar Sumampir Purwokerto Utara located at rural upper end for designing rural clean water resources. Variables observed were physical and chemical water quality, need of water, discharge of the spring, and flowing energy. The result of research showed that water quality of the spring was suitable for clean water resources and drinking water resources of rural, with average discharge of water was 4.07 liter/s so it could be used to fulfill the clean water requirements of the Sumampir’s people who were not served by PDAM for 16 years (100% people), 27 years (75% people), and 37 years (60% people), and based on energy potential, available gravitation flowing system could be used if pipe minimum diameter of 3 inch was used.
Tingkat Ketahanan Api Batako Ban Bekas untuk Material Dinding Bangunan -, Nastain; Maryoto, Agus
Jurnal Teknik Sipil Vol 25, No 2 (2018)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1460.228 KB) | DOI: 10.5614/jts.2018.25.2.10

Abstract

AbstrakPenggunaan batako ringan ban bekas sebagai material dinding telah menunjukan kontribusi yang cukup baik dalam usaha penghematan energi dalam bangunan, maupun untuk mengurangi berat sendiri struktur bangunan secara keseluruhan. Oleh karena itu batako ban bekas sangat potensial untuk digunakan sebagai bahan material dinding bangunan. Tetapi, tingginya kasus-kasus kebakaran yang sering terjadi terhadap bangunan di Indonesia, maka menjadi penting untuk mengetahui tingkat ketahanan api batako ringan ban bekas sebagai material dinding terhadap kebakaran. Oleh karena itu, tujuan penelitian ini adalah untuk mengetahui tingkat ketahanan api batako ringan ban bekas menggunakan metode uji modifikasi SNI 1741-2008. Perubahan suhu pembakaran diukur menggunakan alat thermometer infra red pada 15 titik pengukuran. Hasil penelitian menunjukan bahwa suhu kebakaran sisi terekspose api akan meningkat seiring bertambahnya waktu pembakaran dan akan menurun seiring bertambahnya kadar ban bekas dalam batako. Bertambahnya kadar ban bekas dalam batako juga akan menyebabkan suhu kebakaran pada sisi tidak terekspose api menjadi lebih rendah dan akan menurunkan laju penyebaran suhu kebakaran.AbstractThe use of lightweight brick tires as wall materials has shown a considerable contribution to energy conservation efforts in buildings, as well as to reduce the overall weight of the building structure. Therefore batako tires used very potential to be used as building material wall materials. However, the high number of fire cases that often occur in buildings in Indonesia, it becomes important to know the level of fire resistance of lightweight concrete tires as wall material against fire. Therefore, the purpose of this study is to determine the level of fire resistance of lightweight tire brick using the test method of modification of SNI 1741-2008. The change in combustion temperature was measured using an infra red thermometer at 15 point measurements. The results showed that the fire temperature of the fire exposed side will increase with the addition of burning time and will decrease with increasing the tire level in the brick. Increasing the level of tires used in bricks will also cause the fire temperature on the unexposed side of the fire to be lower and will decrease the rate of fire temperature spread. 
Tingkat Ketahanan Api Batako Ban Bekas untuk Material Dinding Bangunan Nastain Nastain; Agus Maryoto
Jurnal Teknik Sipil Vol 25 No 2 (2018)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2018.25.2.10

Abstract

AbstrakPenggunaan batako ringan ban bekas sebagai material dinding telah menunjukan kontribusi yang cukup baik dalam usaha penghematan energi dalam bangunan, maupun untuk mengurangi berat sendiri struktur bangunan secara keseluruhan. Oleh karena itu batako ban bekas sangat potensial untuk digunakan sebagai bahan material dinding bangunan. Tetapi, tingginya kasus-kasus kebakaran yang sering terjadi terhadap bangunan di Indonesia, maka menjadi penting untuk mengetahui tingkat ketahanan api batako ringan ban bekas sebagai material dinding terhadap kebakaran. Oleh karena itu, tujuan penelitian ini adalah untuk mengetahui tingkat ketahanan api batako ringan ban bekas menggunakan metode uji modifikasi SNI 1741-2008. Perubahan suhu pembakaran diukur menggunakan alat thermometer infra red pada 15 titik pengukuran. Hasil penelitian menunjukan bahwa suhu kebakaran sisi terekspose api akan meningkat seiring bertambahnya waktu pembakaran dan akan menurun seiring bertambahnya kadar ban bekas dalam batako. Bertambahnya kadar ban bekas dalam batako juga akan menyebabkan suhu kebakaran pada sisi tidak terekspose api menjadi lebih rendah dan akan menurunkan laju penyebaran suhu kebakaran.AbstractThe use of lightweight brick tires as wall materials has shown a considerable contribution to energy conservation efforts in buildings, as well as to reduce the overall weight of the building structure. Therefore batako tires used very potential to be used as building material wall materials. However, the high number of fire cases that often occur in buildings in Indonesia, it becomes important to know the level of fire resistance of lightweight concrete tires as wall material against fire. Therefore, the purpose of this study is to determine the level of fire resistance of lightweight tire brick using the test method of modification of SNI 1741-2008. The change in combustion temperature was measured using an infra red thermometer at 15 point measurements. The results showed that the fire temperature of the fire exposed side will increase with the addition of burning time and will decrease with increasing the tire level in the brick. Increasing the level of tires used in bricks will also cause the fire temperature on the unexposed side of the fire to be lower and will decrease the rate of fire temperature spread. 
SEPTICTANK PERESAPAN SISTEM KANAL (PERSIKAN) SEBAGAI TEKNOLOGI ALTERNATIF PENGENDALIAN PENCEMARAN KOLIFORM TINJA PADA PEMUKIMAN PADAT Yanto Yanto; Nastain Nastain
Dinamika Rekayasa Vol 3, No 2 (2007): Dinamika Rekayasa - Agustus 2007
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2007.3.2.109

Abstract

The main problem of domestic wastewater treatment in term of bacterial removal using conventional septictank in many developed towns is lack of land to purify domestic sewage into 10 m minimum safety distance according to WHO regulation. It is necessary to develop new treatment system to ensure bacterial will be removed 100 percent less than 10 m distance. Channel System Filter Septictank (CSF Septictank) is designed to solve the problem above. CSF Septictank is a common septictank equipped with filter tank separated by several partition walls to shape channels. CSF will consist of three parts: initial storage tank, filter tank and final storage tank. The Filter tank is fully filled with fine sand as filter medium. Wastewater will flows from the initial storage tank then pass the filter tank and entering the final storage tank as product of CSF Septictank treatment. Dimensions of the filter tank are analyzed using Huisman formula. Performance of CSF Septictank is measured by comparing water quality between water in the initial storage tank and the final storage tank. Water quality test result shows significance effect in bacterial removal. The other parameters also show increasing of water quality. By using CSF Septictank, bacterial contents could be removed 99,15%, BOD5 contents decreases 27,24%, COD contents decreases 29,01% meanwhile DO contents increases 27,78%
Pemanfaatan Sedimen Waduk Mrica Untuk Bahan Baku Bata Merah Nastain Nastain; Paulus Setyo Nugroho
Dinamika Rekayasa Vol 5, No 2 (2009): Dinamika Rekayasa - Agustus 2009
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2009.5.2.24

Abstract

Volume of water storage reservoir conditions Mrica from year to year decreases due to sedimentation. Efforts to reduce sediment in the reservoir has been done by way of flushing (flushing) periodically through the drawdown culvert (DDC), where the outcome is less effective and causes a lot of losses. This research was conducted in order to exploit the reservoir sediments Mrica for raw materials of red brick as an alternative effort to reduce sediment in the reservoir, as well as empowerment of communities around the reservoirs. Methods of research carried out by making a brick specimens made from sediments that were collected at the upstream, middle and downstream of the reservoir storage area. Laboratory tests conducted to determine the physical characteristics of sediment and the characteristics of the bricks produced. The results showed that: (1) Sediment basin headwaters Mrica coarse-textured sand with a sand content of 53%, the middle area is a sand-textured sand content of 62%, and the downstream region of 69% silt-textured with fine sand content of 31% , (2) Sediment that can be molded into bricks is a sedimentary rock containing 40% sand, with the color after the fire is reddish brown and smell of the less savory, (3) Depreciation is the largest dimension of the brick after the fire occurred on the bricks that  were made of sediment downstream areas, ie an average of 21%, and (4) The compressive strength of bricks produced very little that is equal to 0.5% of the minimum standards required by the SNI 15-2094-2000.
Pengaruh Bambu Untuk Pipa Distribusi Air Minum Terhadap Kualitas Air (Studi Kasus Distribusi Air Minum Di Paweden, Karangkobar, Banjarnegara) Nastain Nastain; Gito Sugiyanto; Purwanto Bekti Santoso
Dinamika Rekayasa Vol 1, No 1 (2005): Dinamika Rekayasa - Agustus 2005
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2005.1.1.1

Abstract

This research was aimed to know bamboo influence to the physical, and chemical characteristic, and water quality. Parameters observed are temperature, color, taste, odor, pH,DO (dissolved oxygen), BOD (biochemical oxygen demand) and COD (biochemical oxygen demand). The result showed that bamboo influence to the physical and chemical characteristic is smaller effect, except to the DO and COD parameters, it is polynomial change. The result of water quality showed that water to bamboo distribution is suitable used to drinking water resources. 
Pemanfaatan Pemotongan Ban Bekas Untuk Campuran Beton Serat Perkerasan Kaku Nastain Nastain; Agus Maryoto
Dinamika Rekayasa Vol 6, No 1 (2010): Dinamika Rekayasa - Februari 2010
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2010.6.1.29

Abstract

Basically, construction of road pavement has 2 (two) types, are rigid pavement and flexible pavement. Rigid pavement has many advantages: the design is simple, the maintenance is easy and it is suitable for heavy load traffic as well as for sub grade with low CBR value However, the main disadvantage of rigid pavement is its inflexibility because the flexural strength of concrete is low. To increase the flexibility of concrete, adding elastic material (waste tire) into concrete mixture is needed. This is very possible, because waste tire has high modulus of elasticity value and low density. This research is conducted to find the influence of waste tire fiber addition towards the increase of flexural strength and compressive strength of rigid pavement. This research uses tire shreds 4 mm x 4 mm x 60 in mm size which are mixed randomly into various concentrations. Concrete mechanic behaviors, flexural strength and compressive strength, are measured by testing cylinder and beam concrete specimens. The research results show that the addition of waste tire fiber can increase flexural strength of concrete up to 20.84% and compressive strength of concrete up to 4.73% higher than normal concrete when the waste tire fiber content is 0.75%.
Jarak Parit Irigasi Jalur Untuk Tanaman Palawija Daerah Irigasi Banjarcahyana, Banjarnegara Nastain Nastain
Dinamika Rekayasa Vol 4, No 1 (2008): Dinamika Rekayasa - Februari 2008
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2008.4.1.129

Abstract

At furrow irrigation, crops plant will use the root absorption capacity to keep taking water from trench, but, depth, spreading, and the root absorption capacity of furrow irrigation is limited, and depand crops species, age of crops, and soil caracteristic. Thus, the depth and trench distance planning is very important to determine productivity of crops plant. This research aimed to know effectivity of depth and trench distance at furrow i rrigation of Banj arcahyana irrigation system using water balance model. The result of research showed that trench distance has variative and depand on water level of trench and crops species. Melon needs more short trench distance than the other crops plant, where as the maximum requirement of water will occur on August and September.
DIFRAKSI GELOMBANG MELALUI BREAKWATER AMBANG RENDAH HALF CYLINDER Nastain Nastain; Suripin Suripin; Nur Yuwono; Ignatius Sriyana
Jurnal Ilmiah Desain & Konstruksi Vol 20, No 2 (2021)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/dk.2021.v20i2.5053

Abstract

Gelombang datang akan mengalami difraksi saat melewati sebuah struktur yang relatif besar. Gelombang difraksi akibat breakwater ambang rendah half cylinder akan dihamburkan secara radial arah normalnya berupa gelombang hambur (scatter). Penelitian ini dilakukan untuk mengetahui kinerja breakwater ambang rendah half cylinder berdasarkan nilai koefesien hambur (scatter) gelombang (Ks) yang terjadi. Analisis potensial gelombang dilakukan untuk menyelesaikan persamaan pengatur aliran secara analitik menggunakan potensial kecepatan sebagai variabel dasar dengan menerapkan kondisi syarat batas yang ada. Hasil analitik kemudian diverifikasi menggunakan metode numerik. Hasil penelitian menunjukan bahwa koefesien scatter (Ks) breakwater ambang rendah half cylinder akan meningkat jika periode gelombang (T) dan nilai parameter a/h (a = jari-jari half cylinder, h = kedalaman air) bertambah besar.  Nilai koefesien scatter (Ks) akan bernilai maksimum jika nilai ka  2 (k = wave number). Hasil verifikasi menunjukan bahwa metode analitik dan numerik menggunakan potensial kecepatan sebagai variabel dasar mendekati hasil yang sama jika nilai a/h ≤ 0,50.
Co-Authors Agus Maryoto Agus Maryoto Agus Maryoto Gito Sugiyanto Ignatius Sriyana Nur Azizah Nur Yuwono Nur Yuwono Paulus Setyo Nugroho Paulus Setyo Nugroho Probo Hardini Purwanto Bekti Santoso Purwanto Bekti Santoso, Purwanto Bekti S. Suripin Sriyana Sriyana Sugeng Waluyo Yanto Yanto Yanto Yanuar Haryanto