Mixing time is very important in controlling concrete compressive strength, the longer waktu pengadukan the more concrete compressive strength decrease. This is occored because couldjoint against concrete mixture when it is setting time ofconcrete. In order to control setting time. It is used additive chemical material such asplastiment RTD-01 as solution. In this research, it is obseved t…
ABSTRACT Portland cement represent especial component in concrete technology. Cement process can make worse effect of this global warming and glasshouse so that need thrift of use cement through substitution with waste (pozzolan) as concrete mixes. Dregs is waste of acacia having the nature ofpozzolanik because containing element ofSiC>2 dan CaO which can be used as a substitution cement. …
The whole stream of Sungai Siak (Siak River) both upstream and downstream is located in the Riau’s province. Upstream of the Siak’s watershed is upstream for Tapung kanan River that having many tributaries. Siak’s watershed is a critical river bashin. It causes due to significantly fluctuated the watershed. A Large discharge fluctuations between the rainy and dry seasons could resulte…
Karas Island Reservoir is a reservoir that functions to provide raw water. The Karas Island Reservoir is located on Karas Island, Galang District, Batam City, Riau Archipelago. The Karas Island Embung needs maintenance so that it can provide benefits to the community. This research is intended to assess the performance of the Karas Island Reservoir based on the evaluation aspects of the reservo…
This research is located at the Kebun Raya Kota Batam Reservoir, with the aim of assessing the performance index of the Kebun Raya Kota Batam Reservoir. The performance index obtained will be used as a basis for planning maintenance operations at the reservoir. The assessed aspects of the reservoir include the Physical Aspect, Operational and Service Aspect, Security and Environmental Aspect, a…
Peatlands are naturally always wet and moist and will potentially cause various disasters if drained. In restoring the functions of peatland ecosystems as carbon storage, biodiversity storage, water storage, and reducing greenhouse emissions, peatland restoration through good water management is needed. This research was conducted at KHG Bengkalis Island, Bengkalis Regency, Riau Province. For T…
Brittle properties are a crucial weakness of concrete materials used in the world of construction. This encourages the use of additional materials which function to minimize direct collapse due to the brittle nature of concrete. One of the additional materials used is polypropylene fiber. This fiber is a type of plastic that is able to increase and improve concrete properties such as ductility …
The development of community activities in utilizing land to meet their daily needs has an impact on changes in land use in the Batang Sinamar watershed. The change in land use is feared to have the potential for land erosion. This study aims to determine the rate of erosion and the level of erosion hazard in the Batang Sinamar watershed. The USLE and MUSLE erosion prediction models are used to…
The Kelarik Irrigation Area is located in Kelarik, North Bunguran District, Natuna Regency, Riau Islands Province which supports and supports local agricultural businesses with a service area of 677 Ha. To maintain facilities and infrastructure so that they continue to function or have a service life that is in accordance with the initial development plan, an irrigation system performance asses…
Transportasi is a very important means in everyday life and also plays an important role in the economic development of societ, Transportation supports the process of moving people and goods from the point of origin to the destination more easily. In this modern era technological developments have progressed very rapidly,as well as the development of online businesses that require transportatio…
Saat musim penghujan, seringkali di kawasan hilir Sungai Tangkerang anak Sungai Sail terjadi luapan. Luapan ini terjadi sampai membentuk genangan di Jalan Akasia I Kelurahan Tangkerang Utara Kota Pekanbaru. Penelitian ini dilakukan yakni untuk mensimulasi profil muka air pada saat banjir dan penanganan apa saja yang bisa dilakukan untuk mengatasi banjir yang sering terjadi ini. Untuk mendapat…
Kabupaten Siak terkenal sebagai daerah yang dipisah oleh tiga sungai, yaitu Sungai Siak Kecil, Sungai Siak, dan Sungai Penyengat. Hal ini menyebabkan banyaknya penduduk yang menggunakan sungai sebagai jalur transportasi terutama Sungai Siak. Dinas Perhubungan Kabupaten Siak berencana membangun 5 halte sungai. 7 titik lokasi yang paling banyak memenuhi kriteria diambil dari 15 titik lokasi renca…
Beton geopolimer merupakan beton yang tidak menggunakan semen sebagai bahan dasar. Sebagai pengganti semen digunakan abu terbang batu bara dan abu terbang abu sawit. Kedua abu terbang tersebut diaktifkan dengan larutan alkali, yaitu campuran NaOH dan Na2SiC>3. Pada penelitian ini pengujian yang dilaksanakan adalah kuat tarik dan rembesan beton geopolimer. Abu terbang batu bara yang digunaka…
Agregat daur ulang merupakan alternative material untuk konstuksi bagunan di daerah yang terkena gempa bumi. Banyak material yang dibutuhkan untuk membangun tempat penampungan sementara. Agregat daur ulang dapat menjadi alternatif untuk campuran beton. Material berasal dari reruntuhan gedung ini banyak ditemukan di daerah terkena gempa bumi. Dalam penelitian ini, agregat daur ulang yang di…
Flood occurs when the water discharge exceeds the capacity of the river, which may harm impact of flooding in municipal area. This research aims to test the reliability of EPA SWMM software in rural area and compare it with the discharge from HEC-HMS. The reliability of the softwares was determined by calculating the difference in discharge error (DE). The simulation was performed by using floo…
ABSTRACT Rimbo Panjang irrigation area is potensial wet land area to be developed as agriculture area. Nowdous Rimbo Panjang sould not be cultiveted optimally because woter planing desnot work well. This reseach was conducted to evaluate exsiting the cross section capacity in the field, against the ability to flow disharge at rainy clays and to suqqest the available cross section of drain…
ABSTRACT To Determine type of pavement is necessary, a suitable Pavement for Construction Road will get cost effective, the two main types of pavement are flexible and Rigid. Data on Dinas PUKimpraswil Kampar, Rumbio - Kebun Durian Road, it is Done Cost analysis for Rigid Pavement and Flexible Pavement, the cost analysis Used Unit Price on Dinas PU Kimpraswil Kampar in 2007 and is done c…
ABSTRACT Dregs is one of solid wastes that was produced from clarification green liquor from recausticizing plant unit on the pulp process. The use of dregs waste of the mortar mixing is expected to reduce the solid waste problems in the pulp and paper industry. This research was conducted to know the dregs influence additive in the mortar mixing against mortar characteristicts and mortar …