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…
ABSTRACT Bengkalis Island is a peat island which is prone to beach abrasion. Abrasion happens at the rate of 32,5 m/year, especially on the west of Bengkalis Island. The relatively lightweight characteristic of peat materials makes it more susceptible to beach abrasion and sedimentation. Since peatland beaches are very rare in the world, study about peatland beaches abrasion was also rarel…
ABSTRACT According to the peatland fire risk index, peat soils with a groundwater level of more than 40 cm are very at risk of land fires. Groundwater Surface (GS) plays an important role as a key in determining the risk of fire. So that if changes in groundwater levels in the future can be predicted, then the risk of fire can also be minimized. The purpose of this study is to create a hydrolo…
ABSTRACT A house is a building that functions as a place of residence or residence and a means of fostering a family. Each region has the same problem in terms of settlements, namely the number of habitable houses available is not in accordance with the rate of population growth. Likewise in the city of Pekanbaru, especially in the District of Sail District Tenayan Raya which is the center…
ABSTRACT One model of the transformation of rain into debit is the Hydrologic Engineering Center - Hydrologic Modeling System model or abbreviated as HEC-HMS, and one of the calculation methods is Soil Moisture Accounting. This model simulates the movement of water through and storing water in vegetation, at ground level, in soil profile, and in the groundwater layer. The purpose of this s…
ABSTRACT Drainage system is widely known as a facility to complement roads as one of the technical requirement for road infrastructure. Drainage system functions by directing water flooding road infrastructure and facilities around it. Drainage system maintenance is done so drainage system can continuously work as optimally as possible. Analytical Hierarchy Process (AHP) is a method helpin…
ABSTRACT Upper soil crust of coastal area in Indonesia consists of greatly-thick soft soil. Therefore, the use of end-bearing type pile foundation on that kind of area is highly discouraged due to how expensive it is economically. Friction pile becomes an alternative foundation for coastal area, however there’s still little friction between pile surface and soil due to concrete and steel…
ABSTRACT Makassar is a coastal area so the influence of tides of sea water must be taken into account. This research used Admiralty method with observation data every hour during 29 days simulated on 101 data variation and 15 days 115 data variation. Simulation data will be verified against several verifications, namely verification of the data itself (Simulation 1), verification of other …
ABSTRACT High plasticity clay soils are categorized as soft soils that have low strength and bearing capacity, high compressibility and large shrinkage, so that stabilization is needed so that they can improve the properties of the soil needed to be used as a subgrade according to construction. The stabilization efforts undertaken in this study were mixing additives in the form of fly ash (co…
ABSTRACT The objective of this research was to do an analyze velocity of the groundwater flow and surface of the groundwater using a Groundwater Velocimeter on peatlands that has been carried out by a wetting program trough the construction of a canal block for peatland hydrological restoration. Hydrological restoration of peatland with the construction of canal blocks is a common way to …
ABSTRACT Hybrid geopolymers are fly ash bottom ash geopolymers with additional PCC cement which aim in order to cure in ambient temperature. The research aims to study mechanical properties of geopolymers hybrid concreate and PCC concrete which is exposed to peat water for 0, 7, and 28 days after curing 28 days, such as compressive strength, tensile strength and flexural strength. The resu…
ABSTRACT The work built on the land of high plasticity clay (CH) that has a relatively low carrying capacity will have a short service life, to overcome the problem is carried out efforts to improve soil geotechnical properties by stabilizing using bottom ash (coal waste) and cement. The addition of the mixture aims to determine its influence in the efforts to repair the phisycs and mechanica…
ABSTRACT In a pavement mixture, the filler has a significant effect because it functions as a cavity filler in the mixture. One of the fillers that can be used is Kapur Tohor. Tohor lime is the result of burning raw lime at a temperature of approximately 900 C which can be utilized and contains silica so that it can improve the quality of the pavement mixture. The purpose of this study was…
ABSTRACT Advancements in science and technology of civil engineering have led the development of modifications to the shape of pile foundation. Modification of the pile foundation by adding wings to the pile is one way to increase skin friction on soft soil, so that a greater bearing capacity is obtained. In this research, piles were modeled with variations of wing’s lengths of 0.50D, 0.…
ABSTRACT Pekanbaru-Dumai Toll Road is part of the toll road from the Trans- Sumatra road that connects Pekanbaru with Dumai in Riau. This is in line with government programs that aim to support national economic growth and support the implementation of the Master Plan for the Acceleration and Expansion of Indonesian Economic Development (MP3EI). The Progress of the Sumatra- Kandis-Dumai T…
ABSTRACT Flood routing in the Riau region is influenced by one factor, namely the water level in the river area, water level data processing using the Artificial Neural Network program with Back propagation Method. Data processing of water level carried out is to predict the water level in the downstream by using the water level data in the upstream and the water level data in the downstre…