Construction work for high rise buildings is a dense work activity with a high level of risk. The purpose of this research is that construction of the building takes place in the middle of lecture activities where many students, lecturers, and staff carry out activities in the campus environment, considering that construction projects are generally vulnerable to work accidents. This study investigated the identification, K3 risk assessment, and how to control OHS risks in Kadiri University LP3M building projects. The assessment method uses a matrix sourced from AS / NZS 4360: 2004. The study population numbered 58 workers ranging from workers, artisans, project guards, forepersons, executors, and office staff. The sample in this study amounted to 38 respondents. Data collected from questionnaires to respondents. The results of the study showed that immovable/ tripped objects with a risk index of 20 included a very high-risk classification, high-risk classification of 4 variables, classification at medium risk level as many as ten variables can endanger workers and jobs while classification at a low-risk level as much as two variables.
The use of raw materials as road pavement materials in general uses materials that are still fairly common. Researchers are trying to use alternative materials as substitutes for aggregates that are exploited continuously. This research uses fine aggregate demolished concrete that has been destroyed. The method used was an experiment with asphalt content variation of 6%, 6.5%, 7%, 7.5%, 8%. This test uses the Marshall method which is the basis for calculating the stability and flow values. In the Marshall test the results of testing the characteristics of the table the highest VMA value with asphalt 6% with a value of 19.87%, the highest VIM value with asphalt 6% with a value of 7.91 Highest VFB value with asphalt 6.5% with 89.62% stability value with asphalt 7% with 3538 kg value, for the highest flow value with optimum asphalt is at 7.5% and 8% of VIM, VMA, VFB values, STABILITY, and MQ.
The road is one of the most important infrastructures. The community needs it because the road functions to connect the source of production. Asphalt is an aggregate binding material in road pavement construction, which plays an important role in determining road pavement performance. Road Pavement, in general, uses materials that are still fairly common. This study uses a fine aggregate of crushed concrete specimens. The method used is an experiment on the addition of concrete test specimens with percentages of 10%, 20%, 30%, 40%, and 50%. Marshall method which is the basis for calculating the stability value and flow. the results of 5 Marshall test samples of asphalt concrete mix utilizing concrete waste obtained the characteristics of the average value of the study that all had met Highways' requirements at a VMA value of 18.22%, a value of 4.22 VIM.%, VFB value 75.04%, STABILITY value 4806 kg, FLOW value 3.24 mm, and Marshall Quotient (MQ) value 14958.1 kg / mm.
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