Peat water is found in many lowland areas in Sumatra, especially in Bengkalis Regency. Peat water is dark brown-black in color, has high organic content and has high acidity. Generally in remote areas on the island of Bengkalis. Peat water is also used as water for treating concrete, even though the characteristics of peat water do not meet the requirements as clean water. In this research, a s…
This study discusses the resistance of concrete using OPC and PCC cement with a concrete quality plan of f'cr 15 MPa, f'cr 20 MPa and f'cr 28 MPa through a treatment process using normal water for 28 days which is then immersed in a peat water environment with pH ranged from 3.00 to 3.80 with an average pH of 3.44 for 120 days in Bengkalis Regency. The aim of this research is to examine the com…
In the field conditions are often found a foundation design to be change due to differences in static and dynamic bearing capacity. In this research a study was conducted on the correlation between theoretical bearing capacity analysis with calendering and PDA as a dynamic test. Static bearing capacity is calculated based on N-SPT data with the Mayerhof method and the Luciano Decourt method. Wh…
Concrete material-based development is currently very important in infrastructure development. One of the developments that often occurs on peatlands, because Indonesia is a country that has the largest peatlands after Brazil. Peat is a material known for its acid content, which has a negative effect on the concrete used as a building structure. Along with this, research development is needed, …
Pile foundations are categorized including the type of deep foundations used to support buildings that hold uplift forces, especially in high-rise buildings that are affected by windmills. Along with advances in science and technology, modifications to the form and calculation of the bearing capacity of the pile foundation continues to grow. Many types or forms of modified pile foundations have…
Some watershed management activities carried out in upstream areas such as land management activities that encourage erosion, in turn will have an impact in downstream areas. The Tapung Kiri Sub-watershed is a sub-watershed of the Siak watershed located in the upstream part of which is a buffer zone for the central and downstream areas of the Siak watershed. This study aims to establish sc…
The evaluation stage of the old pavement is very important for road rehabilitation decision making. Empirical methods such as AASHTO 93 have become a long-term reference used in Indonesia. necessary to compare the suitability of the empirical design with the mechanistic-empirical which can predict the damage model based on the analysis of the loading of the wheels and the quality of the materia…
General phenomenon of the decision making of water resource development is complex, multi-sector and multi-actors, requiring an alignment between technical and non-technical aspects, systematic analysis procedure is required to integrate a variety of competitive intentions and decision Support System (DSS) is an important part as an analysis tool for decision making. The main objective of this …
ABSTRACT Research The final project which as in the title is the utilization of Geolical Carbon used is Graphane. Graphane is the basic sheets of related carbon atoms. The research process starts from the test of fine aggregate material and coarse aggregate, for fine aggregate, it is tested for the modulus of thirst, specific gravity, organic content, sludge content, volume weight and mois…
Drainage is a system created to deal with the problem of excess water both excess water that is above the soil surface. In the rainy season there is excess water in the form of surface runoff which often causes floods so people start thinking about the need for a channel system that can drain water more controlled. The existing condition of the drainage channel that does not function optima…
In general, soils have properties that vary from place to place due to the complex formations of the soil. Soil investigation is the main key in starting a construction. The Standard Penetration Test (SPT) and Sondir are the field tests most often used to estimate soil parameters in foundation analysis and design. The SPT value shows a correlation with the Sondir value and other soil parameters…
ABSTRACT This research examines the variation of initial time in time observation based on the Hijriah calendar, which produces the most accurate tidal predictions. The study analysis uses the Admiralty method with hourly observation data for 15 days and 29 days. The data uses tidal data in Kotabaru waters and simulated with three simulations, namely, the simulation of the data itself, the…
ABSTRACT The coastal area of Bengkalis Regency, especially the one directly opposite the Malaka Strait has the characteristic of sea waves that are strong enough so that it can suffer quite severe damage such as abrasion and sedimentation. Abrasion and sedimentation on the coast is influenced by the characteristic wave conditions. The purpose of this research is to make a beach modeling t…
ABSTRACT The Seberang Gunung Irrigation Area serves an area of 581 Ha. Irrigation networks that experience physical damage and decreased function will result in a decrease in efficiency, therefore maintenance activities are needed to restore the function of the irrigation network. This study aims to obtain optimal maintenance by maximizing the limited costs available. The stage for obtaini…
ABSTRACT The Sei Paku irrigation area is located in the Kampar Kiri sub-district, Lipat Kain which has an area of 124.64 hectares. Not all of the physical conditions in the Sei Paku irrigation network are in good condition, some several channels and, buildings that were damaged. This can result in a decrease in the function of the irrigation network which results in irrigation water being …
ABSTRACT Fly ash and bottom ash (FABA) is one of the residues produced from the coal burning process which is included in hazardous and toxic waste. However, the content of FABA is one reason for the utilization of the waste has been used. The purpose of this study was to determine the utilization of fly ash and bottom ash in the subbase on the carrying capacity of the road and with the ap…
ABSTRACT The development of construction technology has progressed quite rapidly, especially in the field of building materials. One form of technological advancement in building materials which has been developing until now is mortar. Mortar is a mixture of cement, fine aggregate, water and stirred until homogeneous. This study used Bacillus Subtilis as an added ingredient by examining it…
ABSTRACT The rapid development of infrastructure in Riau Province has an impact on increasing land needs, especially in coastal areas which are dominated by soft soils. Soft soil will experience a large settlement if it is given a construction load for a long time. This is caused by the discharge of pore water in the soil causing damage to the construction structure. The preloading method …
ABSTRACT Soft soils have instability problems that cannot be tolerated, so when a construction is to be built, the soft soil has to go through several methods of soil repair. One of them is by giving a load above the ground to increase the pressure of pore water in the soil, so that the water that fills the pore space on the ground out so that it causes the volume of pores in the soil to s…
ABSTRACT Contact between the roller element with the inner or outer ring produces enormous pressure which can cause friction between the surfaces of the two objects. The continuous friction will result in wear and using lubricant between the two contacting surfaces becomes an important role to reduce friction as well as wear. There are several types of lubrication, one of them is elastohyd…