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Utilization of Construction Concrete Waste as Aggregate Substitutes in Normal Concrete Production Zulkarnain, Iskandar; Asnaning, Aniessa Rinny; Desniati, Emmi; Balqis, Tanya Audia
ABEC Indonesia Vol. 12 (2024): 12th Applied Business and Engineering Conference
Publisher : Politeknik Negeri Bengkalis

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Abstract

The construction process frequently necessitates the demolition of existing structures, resulting in substantialconstruction waste. A significant portion of this waste comprises demolition debris, particularly from concrete buildingmaterials. This research aims to develop standard concrete by partially substituting conventional coarse and fineaggregates with concrete waste materials. The substitutions involved replacing 25% and 50% of sand and gravel,respectively, by weight, using a K300 concrete mix design. Adopting the SNI 03-2834-2000 method, the mix design for 1cubic meter of concrete comprised cement (528 kg), sand (776.16 kg), gravel (807.04 kg), and water (205 kg). Theresults indicated an average sample weight reduction, with the first sample at 12.91 kg, the second at 12.79 kg, and thethird at 12.77 kg. This weight decrease suggests that using waste as a partial aggregate substitute impacts concretedensity. Compressive strength tests revealed a reduction of 5.98% in the concrete containing a 25% waste mixture, withaverage compressive strength declining from 307.22 kg/cm² to 288.94 kg/cm². A more pronounced reduction occurred inthe 50% waste mixture, where compressive strength decreased by 15.70% (from 307.22 kg/cm² to 259.06 kg/cm²). Thistrend aligns with the understanding that higher waste content correlates with greater mechanical strength reduction, likelydue to the differing physical properties of waste materials, such as lower density, which impact overall concreteperformance, particularly in compressive strength.
Analysis of Road Damage Management Using the Bina Marga Method on the Access Road of Politeknik Negeri Lampung Rizki, Sekar Dwi; Asnaning, Aniessa Rinny; Tiarto, Eko Hari; Ariyanti, Titi; Wisman, Mira
ABEC Indonesia Vol. 12 (2024): 12th Applied Business and Engineering Conference
Publisher : Politeknik Negeri Bengkalis

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Abstract

Access roads at Politeknik Negeri Lampung (Polinela) support mobility for students, lecturers, and staff. Thequality of these roads, particularly the level of damage, is a serious concern as it disrupts accessibility for students and staff.Additionally, this condition hinders academic activities and the overall operations of the campus. Adequate and appropriaterepair efforts are necessary to ensure comfort and safety within the campus environment, thereby better supportingacademic activities.The Bina Marga Method is an approach used to assess the level of road damage. The assessment isconducted using specific established criteria, such as road classification and the severity of damage. The data collected isthen analyzed to determine the priority order for repairs and maintenance plans.The access road to Polinela Campus is 1,616.4 meters long and has an average daily traffic volume of 1,011.5 passengercar units per hour, classifying it into traffic class 4. Based on the results of the analysis, the condition rating of the PolinelaCampus road is 6, indicating that the priority order for road management is 7. Under these conditions, routine maintenanceis required. The routine maintenance needed in this case includes patching holes and resurfacing the pavement.