ABSTRACT Concrete is a mixture consisting of Portland cement or other hydraulic cement, fine aggregate, coarse aggregate and water, with or without additives. Along with the addition of age, the concrete will harden and will reach the design strength (fc') at the age of 28 days. One of the factors that affect the compressive strength of concrete in cylindrical concrete is the influence of the …
ABSTRACT Online transportation is one example of the development of application-based technology which was quite well received at the beginning of its emergence because it is considered one of the best innovations today. One of the current online transportation services is grab, grab is a transportation service provider that was present in Indonesia in 2012 providing GrabCar and GrabBike. This…
ABSTRACT The sun is an unlimited source of energy and can be utilized, one of the uses of solar energy is to make electricity using solar photovoltaic as a medium for converting energy, the placement of solar photovoltaic is generally on the ground (ground mounted) but there are also floating placements, and also rooftops. Based on its placement, this study will discuss ground mounted solar ph…
ABSTRACT Radio Over Fiber (ROF) technology is a technology that combines fiber access networks with wireless systems where ROF uses fiber optic cables as an intermediary medium to obtain greater transmission speeds compared to direct transmission. Optical signal modulation can be transmitted in 2 ways, namely by direct optical modulation and external optical modulation. In this study ROF was d…
ABSTRACT Utilization of solar power through photovoltaic conversion has been widely applied as an alternative energy source because the source of energy is very large and the time is long. The implementation of its utilization can be done in open space, but it requires a large area of land to overcome these obstacles. The implementation of the SPV installation can be done by installing the SPV…
ABSTRACT Damaged roads can cause inconvenience to road users. Damaged roads must be repaired or improved. Overlay calculations using back deflection data on the Parit Indah road in Pekanbaru City are carried out to complete road facilities and infrastructure. The road being tested is the Parit Indah road section with a width of 6 meters and a length of 2400m. For this research, Jalan Parit Inda…
Lyocell is the newest generation of cellulose fibers. The development of textile product value and technology today is heading towards the creation of electronic textiles (E-Texile) which aims to incorporate electrical function into textiles. The results of the E-Texile field will be commercial product expansion with applications becoming smart clothes, sensors, flexible conductive devices,…
ABSTRACT PV power plants, also known as photovoltaic power plants, convert solar radiation energy into electrical energy through the photovoltaic effect. However, current methods of extracting energy from PV power plants have not yet achieved optimal efficiency. This research aimed to determine the optimal power output of a PV system using the DCAM method and a buck converter, with a fixed out…
ABSTRACT Indonesia is a country with the fourth largest peatland in the world..Bengkalis Regency is the second-largest regency in terms of peatland area after Indragiri Hilir Regency with an area of 856 thousand ha or 21.2% of the total peatland in Riau Province, Sumatra Island. Peat has very high water content but become brittle as it dries. This causes the peat slopes to be prone to landslid…
ABSTRACT Vkontakte as a social network where InDriver now has become international level information and technology company in online transportation field. InDriver present in Indonesia in 2019, and present in Pekanbaru in early 2020. InDriver accomodates the workers to become drivers and grows quite rapidly in Pekanbaru. The purpose of this study is to analyze financial feasibility of InDrive…
ABSTRACT Life Cycle Assessment (LCA) analysis is a method used to evaluate the environmental impact of a product or process over its entire life. In this study, LCA was used to analyze the comparative synthesis of Cobalt Glutamic Bio-MOF using two methods, namely the solvothermal method and the ultrasonic method. The purpose of this analysis is to determine the environmental impact resulti…
ABSTRACT Garbage is the residue from human activities in the form of solid waste. Waste needs to be managed so as not to cause negative impacts. One of the efforts in managing waste is by carrying out waste transportation. The purpose of this study was to evaluate waste transportation and provide planning related to waste transportation in Marpoyan Damai District. This study uses field observa…
ABSTRACT Paving blocks are building materials made of various mixtures of hydraulic adhesive materials, cement, water, aggregates and additives that do not reduce the quality value of concrete. Various studies to develop materials that can replace cement and become additional materials for paving blocks are currently being carried out. Coal fly ash waste is one of the waste left over from coal…
Abstrak The Faculty of Engineering, University of Riau is one of the faculties at the University of Riau which uses quite a lot of groundwater with daily usage of around 86.7%, with very much use of groundwater, unused rainwater causes a lot of standing water in the Faculty of Engineering area. The author tries to provide a solution with Rainwater Harvesting. Rainwater harvesting that is carri…
ABSTRACT Aniline is a chemical that can be made from a number of ways and materials, and is used to make various kinds of chemical products. In the current industrial era, aniline has an important role and is widely used as an ingredient for producing isocyanates, rubber-making chemicals, and pesticide-making ingredients. The raw materials used in the manufacture of aniline by the dupont/kello…
ABSTRACT Melamine is the coating for general or specific purposes such as automotive and paint additives. Melamine is a fine, white, powdered crystal that reacts to aliphatic and aromatic aldehydes into many products. The upcoming trend in the market such as melamine-based foam is likely to provide huge opportunities in the future. In 2018, Indonesia recorded a melamine import number of 32,503…
ABSTRACT Industrial development in Indonesia, especially the chemical industry continues to increase. The need for raw materials and industrial supporting materials in Indonesia is still mostly imported from abroad. Dimethyl carbonate (DMC) is a compound that has versatile reactivity, one of the alternative additives that is considered capable of replacing conventional additives because dimeth…
ABSTRACT The need for electrical energy is increasing along with the increasing standard of living of the people. The use of high voltage distribution in addition to reducing losses can also reduce voltage drops, but on the receiving side there is still a voltage drop. Given the importance of the transformer in the distribution system, it requires the main protection which is called a differen…
ABSTRACT Before the construction of a building, the Budget Plan is one of the main processes carried out to determine the total amount of work costs by outlining each work item starting calculating the volume of work, making a Work Unit Price Analysis (AHSP), making detailed Budget Plans, all of which The calculation refers to the plan drawings, material prices and wages around the constructio…
ABSTRACT Shrimp waste in the form of shells, heads and tails which contain protein, can be processed into chitin which has many uses. Chitin is a polymer produced by shellfish (shellfish). Indonesia is one of the largest shrimp producers in the world, where the shell contains chitin compounds as an alternative adsorbent. This compound can be processed and used as an adsorbent for heavy metals.…