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Hasil penelitian wajib disertai sosialisasi

Publikasi Penelitian Dosen

PENERAPAN METODE PEMBELAJARAN STUDENT CENTERED LEARNING (SCL) – PROBLEM BASED LEARNING (PBL)
Abstrak
Penulis : AR INDRA TJAHJANI , Dr.Ir. - M.T. [PDF File] didownload : 40 x

Kawasan Sei Mangkei di Kabupaten Simalungun Sumatera Utara merupakan kawasan industri dan ditetapkan sebagai Kawasan Ekonomi Khusus (KEK) dalam Proyek Masterplan Percepatan dan Perluasan Pembangunan E
Abstrak

Kawasan Sei Mangkei di Kabupaten Simalungun Sumatera Utara merupakan kawasan industri dan ditetapkan sebagai Kawasan Ekonomi Khusus (KEK) dalam Proyek Masterplan Percepatan dan Perluasan Pembangunan Ekonomi Indonesia (MP3EI).  akses menuju Kawasan Sei Mangkei menggunakan Jalan Lintas Timur Sumatera bergabung  dengan lalu lintas menerus, lalu lintas regional dan lokal, serta perlintasan sebidang dengan kereta api, lalu persimpangan, kegiatan formal dan kegiatan non-formal. Namun  kondisi jalan tersebut mengalami kemacetan, dilakukan analisis kinerja jalan,menghitung derajat kejenuhan dan penyebab kemacaetan. Hasil Penelitian menunjukkan derajat kejenuhan pada Ruas Jalan Tanjung Kasau – Lima Puluh sangat baik (DS < 0,75) dan kemacetan yang terjadi bersifat situasional, penyempitan  pada persimpangan Lima Puluh dan  kecelakaan pada perlintasan sebidang kereta api. Solusi  mengatasi kemacetan lalu lintas adalah pembangunan transportasi berbasis rel, flyover, manajemen lalu lintas pada persimpangan, memindahkan lokasi pasar tumpah, kebijakan agar kendaraan truk dari arah Sei Mangkei tidak melewati Ruas Jalan Tanjung Kasau – Lima Puluh pada jam puncak.    

Penulis : AR INDRA TJAHJANI , Dr.Ir. - M.T. [PDF File] didownload : 37 x

KAJIAN MASA KONSTRUKSI REKAYASA LALU LINTAS SIMPANG TIDAK SEBIDANG (STUDI KASUS UNDERPASS MAMPANG DAN KUNINGAN, JAKARTA SELATAN)
Abstrak

The rapid growth of urban areas and inadequate public transport facilities are one cause of growing number of users of private vehicles which leads to decreased level of servise (LOS) road in Jakarta.  One of problem faced by urban communities is growing volume of traffic, travel delays, congestion, traffic accidents and air pollution and noise. Growing demand for urban transportation infrastructure necessary treatment development programe planned urban road network effective and efficie and continuously.  The purpose of this research is to analize and study the congestion problem in Simpang Mampang and Kuningan, impact on traffic caused by Mampang and Kuningan Underpass Development Project. The result obtained from the primary data and secondary data are analized and evaluated among other, the degree of saturation is the ratio of the flow of traffic on the capacity of the road, used as a factor in determining the performance level of  this road means road is problematic with a capacity that is often jammed, waiting time for too long, low speed and low travel time for a distance that not too long, so taken a decision to build Mampang and Kuningan Underpass that aims to parse congestion at both intersection.

  

 

Keywords: Congestion, Engineering Management of Traffic, Travel Time, 

 

                       Underpass, Construction Period. 

Penulis : AR INDRA TJAHJANI , Dr.Ir. - M.T. [PDF File] didownload : 45 x

Nano silica and silica fume for durability improvement and it's impact on high performance concrete
Abstrak

The latest trend of concrete technology declared that concrete is not only needs strength but also durability. it is concurrently with the environmental issues that material durability is something that needs to be prioritized in its use. Various attemps have  been made to produce concrete that has high durability. Many studies and experiments have been done partly by using admixtures of fly ash and silica fume (FS). The latest development was the application of nano silica (NS) to improve the performance of concrete especially its durability. in this study, further experiments were done by using admixtures of nano silica with and without silica fume. the additive were applied to the concrete mix design of high performance concrete (HPC) with f'c 100 MPa as a reference, then mixed with NS in a percentage of 3%, 5%, 110%, 15% with and without silica fume. Further compressive strength  and durability testing were done with a standard DIN 1045 and RCPT standard ASTM C 1202. The experiment results shown that the optimum admixtures proportion were the application of NS 5% and SF 5% which given the best of concrete compressive strength and durability. Furthermore the combination of the use of nano silica with silica fume is more effective than nano silica without silica fume.

Keywords: durability, silica fume, nano silica

Penulis : AR INDRA TJAHJANI , Dr.Ir. - M.T. [PDF File] didownload : 35 x

Process Technology Silic Sand Into Microsilica and Nanosilica for Construction Material
Abstrak

Nanotechnology has experienced rapid growth, it can be seen the emergence of products and high interest researchers associated with nanotechnology.The implication process natural resources management is no longer limited to generating value addition, but were able to perform value creation. One potential source is the natural silica sand.

Silica sand reserves in Indonesia, among others are, South Kalimantan, West Java, East Java and Papua. Utilization of silica sand has been used as a filler only on the construction materials at a price of 20 - 50 IDR/kg, while microsilica: 12,000 – 15,000 IDR/kg and nanosilica: 100,000-150,000 IDR/kg.This study develops the potential of silica sand in Indonesia through testing, XRF, XRD, SEM andPSA. Then further process by nanosilica’s equipment in Indonesia, resulting microsilica and nano silica Indonesia. The end result made comparisons with microsilica and commercial nanosilica.

The results showed that the Planetary Ball Mill (PBM), High Energy Milling (HEM) can be used to generate microsilica. Polishing Liquid Milling Technology (PLMT) can be used to make nanosilica of Indonesia's natural resources, which is equivalent to nanosilica have traded commercial.

Keywords: Nanotechnology, Creating Value, Microsilica, Nanosilica.

Penulis : AR INDRA TJAHJANI , Dr.Ir. - M.T. [PDF File] didownload : 1213 x

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