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All Journal NEUTRON : Research from all areas of the Civil Engineering
Fredy Kurniawan
Universitas Narotama
Civil Engineering, Building, Construction & Architecture Engineering Transportation

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RISK MANAGEMENT RELATED TO IDENTIFYING WORK ACCIDENTS IN LOADING AND UNLOADING CONTAINER ACTIVITIES AT THE BERLIAN TERMINAL TANJUNG PERAK SURABAYA WITH THE HAZARD IDENTIFICATION RISK ASSESSMENT AND DETERMINING CONTROL (HIRADC) METHOD Alfri Yoga Kurniawan; Fredy Kurniawan
Neutron Vol 19 No 2 (2020): JANUARI 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

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The Berlian Terminal is one of the container terminals located in the Port of Tanjung Perak Surabaya, managed by PT BJTI PORT. Container loading and unloading activities have a risk of work accidents. Work accidents can be prevented by applying Hazard Identification, Risk Assessment, and Determining Control (HIRADC). HIRADC aims to identify potential hazards in the workplace by linking workers, tasks, work equipment, and the work environment. This study aims to determine the application of HIRADC to reduce the risk of accidents. This type of research is descriptive research. The total sample of 52 workers, taken by the total sampling method. Data related to respondent characteristics such as worker productivity and the OHS Program on HIRADC were obtained by direct observation in the field and interviews with all workers. The results showed that workers who had high productivity were (71.1%). Statistical tests using the ordinal regression test showed that there was an influence between the OHS Program on HIRADC and the Productivity of Work for Workers in Berlian Terminal (0,000 <0.05). The implementation of the OHS Program at the Berlian Terminal is good and needs to be maintained, if possible, it can be improved by increasing the competency of OHS Supervisors and OHS management following OHS regulations.
THE EFFECT OF ADDITIVE WITH FOAM AGENT AND COCONUT SHELL ON LIGHTWEIGHT CONCRETE Fikki Efendi; Fredy Kurniawan; Diah Ayu Restuti Wulandari
Neutron Vol 19 No 1 (2019): JULY 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Concrete houses have a higher social and economic status. This study provides another consideration for the selection of building materials (Wonorahardjo, 2008). There are several ways that can be used to make concrete lighter, including using lightweight aggregates, substituting coarse aggregates with foam agents, adding coconut shells and additives where coconut shell waste has not been used optimally. In this research, a lightweight concrete mixture made from additives 5M additive, foam agent and coconut shell using 3 kg cement composition. While the 5M additives variation of 3%, 5%, 10%, 15% of cement, 15 milliliters of foam agent and coconut shell of 1%, with consideration of the specimens for 28 days not soaked non-curing. The test specimen is made with a size of 15x30 cm. This study is to determine the weight, compressive strength of the lightweight concrete produced. The results of research on the use of additional 5M additives, foam agents and coconut shells cause concrete to be lighter and compressive strength decreases. The weight of light concrete at 28 days not soaked is 775 kg / cm3, while the quality of concrete is 22 kg / cm2.
THE EFFECT OF ADDITION SILICA FUME, SUPERPLASTICIZER, AND BONDING TO REACHING HIGH QUALITY LIGHTWEIGHT CONCRETE Ayuk Putri Yuliansari; Fredy Kurniawan
Neutron Vol 19 No 1 (2019): JULY 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

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In this research, a lightweight concrete mixture was made with foam and made use of the remaining broken rock from the Crusher Machine process, which was washed ashes. Other added ingredients used in the mixture are Silica Fume, Superplasticizer (Admixture Type F) and Bonding. This reseach uses a mix design from Circular Letter Number: 44 / SE / M / 2015 Concerning Design Guidelines for Mixing Light Material with Foam Mortar for Road Construction, Ministry of PUPR. Trial mix variations carried out are in proportion (SF 5%; BO 0.5%), (SF 10%; BO 0.5%), (SF 5%; BO 1%), (SF 10%; BO 1% ), as well as foam agents with variations 1:20 and 1:40. The treatment process (curing) of the test object is immersed in a water bath, and the testing of the compressive strength of the test object is carried out at the age of 7 days, 14 days and 28 days. By using stone ash, lightweight concrete was obtained with an average specific gravity of 1722 kg / m3 to 1884 kg / m3. From the research results obtained the highest average compressive strength with the percentage of material that is in the variation of the SF 10% ; BO 0.5% and ratio foam (1) : water (40) only for K 190.6 kg/cm2 or FC 15.82 MPa. In each specimen the value of quality efficiency with the most optimum weight variation at SF 10% ; BO 0.5% with a coefficient value of 10.03%.
Co-Authors Alfri Yoga Kurniawan Ayuk Putri Yuliansari Diah Ayu Restuti Wulandari Fikki Efendi