ABSTRACT Food waste is the highest component of solid waste generated in Indonesia, and improper management contributes significantly to greenhouse gas emissions. One major source of food waste is the food service sector, including the canteens of the Faculty of Engineering (FT) and the Faculty of Economics and Business (FEB) at the University of Riau. This study aims to analyze food waste gen…
ABSTRACT Activities of street vendors in the Riau Main Stadium Area, Pekanbaru City, generate various types of waste, notably biomass waste comprising sugarcane bagasse and corn cobs. The generation rate of this biomass waste reaches 117.2 kg/day of sugarcane bagasse and 12.5 kg/day of corn cobs. The carbon content within this biomass waste can be utilized as renewable energy in the form o…
ABSTRACT The rising quantity of automobiles has resulted in a heightened need for engine lubricating oil, which has an impact on the increasing amount of used oil waste. Used oil is classified as B3 waste that has the potential to pollute the environment if not managed properly. One way to manage it is by refining used oil into an alternative diesel fuel. This is because used oil still con…
ABSTRACT Used car oil will cause various problems if it is not managed properly. This is because used oils contain a variety of hazardous components such as heavy metals and carcinogenic substances. This study aims to look for optimal conditions for refining used engine oil into alternative fuels, specifically focusing on combining the Acid and Clay methods with distillation. The methodolo…
ABSTRACT Frequent droughts often cause various hydrometeorological disasters that commonly occur in tropical regions such as Indonesia, particularly in Siak Regency, Riau Province. This study examines drought index analysis using the Normalized Difference Drought Index (NDDI) method in the administrative area of Siak Regency. In addition, this study also analyzes the correlation between the dr…
ABSTRACT Marpoyan – Batas Kuansing is part of a road network classified as an interurban road type. The level of service (LOS) is used to indicate the quality of service provided by a road under certain conditions. The LOS reflects whether a road segment has capacity issues or not. Changes in the LOS relative to the available capacity indicate whether the road can still maintain a servic…
ABSTRACT This study discusses the effect of biosolar fuel variations on the performance of diesel engines using the Computational Fluid Dynamics (CFD) method with OpenFOAM software. The main objective of this study is to analyze how changes in fuel type affect the combustion process and engine performance, such as power, torque, and Indicated Mean Effective Pressure (IMEP). The engine used was…
Pekanbaru - Bangkinang Toll Road is part of the Trans Sumatra Toll Road based on Presidential Regulation Number 117 of 2015. Where based on information from the Service Provider and Service User experiencing delays in completion. The purpose of this case study is to identify and analyze the risk factors causing delays with a probabilistic approach and lean sigma method. The research method…
This study aims to analyze the condition and performance index of breakwater structures on Bengkalis Island based on the Guidelines of the Ministerial Circular Letter of the Ministry of Public Works No. 1/SE/M/2011, as well as to analyze the priority scale for handling the breakwater structures on Bengkalis Island. The research was conducted through direct field assessment. The physical co…
This study analyzes the comparison of infiltration areas in the Siak River Basin based on the Ministry of Public Works and Public Housing Regulation Number 10/PRT/M/2015 and the Ministry of Environment and Forestry Regulation Number 10 of 2022, utilizing Geographic Information Systems (GIS). The objectives are to identify the distribution and classification variations of water catchment areas a…
In embankment construction activities, the selection and use of materials are crucial aspects that must meet various technical requirements to ensure the quality and safety of the constructed embankment. One of the key parameters often used as a reference in determining the quality of soil embankment construction is the California Bearing Ratio (CBR) value. The objective of this study is to eva…
Development and research related to the utilization of biomass is currently motivated by the depletion of the main fuel source reserves derived from fossils. The limited fossil energy sources lead to the need for renewable energy development and energy conservation called green energy development. Biomass utilization is one of the strategic issues in renewable energy development. In Indonesia, …
ABSTRACT Stand-alone solar power plants experience output instability due to fluctuations in solar radiation. To overcome this, an energy storage system is needed. Batteries, as the main energy storage device, have large capacity but limitations in power density and charging/discharging rates. Meanwhile, supercapacitors have high power density and fast response but are limited in maintaining p…
ABSTRACT Cracks can occur in mortar during the construction service life, potentially reducing the overall mechanical performance of construction components. Selfhealing mortar is a material innovation that is able to repair cracks by the material itself without requiring additional treatment. The self-healing process can be optimized by adding certain materials that function as self-heali…
ABSTRACT Fine cracks in mortar accelerate deterioration as harmful agents such as sulfuric acid can penetrate and damage the cement paste, thereby reducing the material's durability. Selfhealing mortar is one of the potential solutions to extend service life through a continuous repair mechanism, particularly in sulfuric acid environments. Several types of materials that can function as se…
Premature damage to flexible pavements in Indonesia is generally caused by overloading, poor construction quality, and suboptimal design. One critical point of damage occurs in road widening projects, particularly at the interface between old and new structures, which is vulnerable to material fatigue and deformation due to repeated deflections. This study was conducted on the BTS Kampar Regenc…
ABSTRACT Cracks in mortar are inevitable during the construction service period, thereby reducing the durability of the mortar. Self-healing methods are used to repair cracks independently, either with natural or artificial additives or from environmentally friendly waste. Additives or healing agents that can be used to aid the self-healing mechanism include eggshell ash waste and silica f…
ABSTRACT Cracks in mortar accelerate damage because they facilitate the entry of aggressive substances such as sulfuric acid, which can damage the cement paste. Damage to the cement paste reduces the strength of the mortar. Self-healing mortar is one solution because it can repair cracks independently. Self-healing can be supported by environmentally friendly additives, such as eggshell as…
ABSTRACT Mortar is an important construction material consisting of a mixture of fine aggregate, Portland cement, and water. Mortar functions as a coating for walls, brick adhesive, and others. However, the use of cement in mortar often causes cracks in these elements. Cracks occur due to variations in temperature changes, loading, and uneven shrinkage. This study uses a solution to overco…
ABSTRACT Cracks during the service period can cause a decrease in the durability of the mortar. One innovative solution for handling cracks in mortar is self healing, which is the ability of mortar to heal its cracks by utilizing certain materials such as mineral additives and pozzolan. This study aims to examine the effect of adding pineapple leaf fibers and silica fume as cement substitu…