West Java Province Research Articles

Comparison of road damage analysis using PCI method and Bina Marga method and the analysis of road improvement methods using the road pavement design manual (Case study: Citayam – Parung road)

The Citayam - Parung road section is an inter-district and city route between Bogor Regency and Depok City, West Java Province, on this road section there is high mobility. This research aims to determine the type of road damage using the PCI method and Bina Marga method and analyze repairs using the 2017 MDP. Data collection was carried out by direct survey and interviews with related agencies. The results of the research analysis of damage to the Citayam - Parung road are alligator cracking, block cracking, edge cracking, transverse longitudinal cracks, utility patches and excavations, polished aggregate, photoles and weathering and raveling. The PCI method damage analysis has a value of 71.96 with Very Good pavement quality, and the results of the Bina Marga method damage analysis have a priority order of 10 with the priority order of the Routine Maintenance Program. The relationship between the PCI method is directly proportional to the Bina Maarga method, with a PCI value between 71-85 and the priority order for Bina Marga, namely 10, the regression equation obtained is PCI = 207.52 – 13.296*(BM). The results of the repair analysis are a 45 mm thick non-structural overlay with an estimated cost of Rp. 2,404,076,800.00.

Mediating Effect of Motivation on the Relationship Between Lecturer Experience and Learning Environment With Caring Character Among Undergraduate Nursing Student in Indonesia.

Caring is learned through faculty role-modeling and clinical interactions, enhancing nursing students' caring character. Relationship between caring, motivation, teacher experience, and learning environment remains uncertain. The present study aimed to explore the relationship between their caring characters, motivation, lecturer experience, and learning environment among undergraduate nursing students in Indonesia. A cross-sectional study was conducted between December 2022 and February 2023, recruiting 550 undergraduate nursing students from 10 universities in West Java province, Indonesia. The study included instruments such as students' perceptions of learning, academic motivation scale, service quality assessment of instructional laboratories, and caring character learning instrument. The Bootstrap analysis was used to analyze the mediating effect of study variable. The study involved participants aged 20-25 years. The mean scores for caring characters, lecturer experience, motivation, and learning environment were 2.18 ± 0.97, 3.46 ± 1.20, 4.32 ± 1.53, and 5.96 ± 2.08, respectively. The results showed significant direct effects of lecturer experience on caring character, mediating effects of learning environment, motivation, and chain mediating effects of learning environment and motivation. The direct effect accounted for 44.34% of the total effect, while the indirect effect was 35.21%. The study found that learning environment and motivation mediate the relationship between lecturer experience and caring characters among undergraduate nursing students in West Java, Indonesia. Emphasizing best practices and creating a student-friendly environment is crucial for fostering guidance and support.

The Effectiveness of Ground Sill Structure in Reducing Local Scouring at Cipamingkis River

Cipamingkis River is a subriver of Cibeet river located in Jonggol District, Bogor Regency, West Java Province. On the Cipamingkis river, there is a vital irrigation infrastructure known as the Cipamingkis Dam, which can irrigate approximately 4,591 hectares of rice fields in Bogor Regency and Bekasi Regency. Cipamingkis dam located in Jatinunggal Village, is on the northern slope of the West Java hills which has a relatively steep riverbed slope so that the possibility of degradation of the riverbed is relatively high. slope of the riverbed is relatively steep so that the possibility of riverbed degradation is quite high. riverbed degradation is quite high. In 2020 there were two Ground Sills that had been built upstream of the Cipamingkis weir. The Ground Sill built across the river aims to reduce the current velocity and increase the sediment deposition rate upstream of the Ground Sill so that the slope of the riverbed is relatively gentle and the Cipamingkis Dam does not experience structural failure as has happened before. The effectiveness is determined by comparing the riverbed elevation around the dam structure, before and after years construction of the Ground Sill structure.

Identification and characteristic of microplastics in sediment and macrozoobenthos of upper Citarum River

Article about the microplastic content in The Citarum River as the most critical aquatic ecosystem in West Java Province. The research was conducted in 2020, during the pandemic situation. Citarum River is the most polluted water due to anthropogenic activities, such as industries, agriculture, and domestic. Monitoring the water quality of the Citarum River to emerging pollutants is becoming an important issue, since the vital role of Citarum River in supporting the livelihood. Microplastic pollution is one of the emerging pollutants, and this study aims to characterize the microplastic particles in sediments and macrozoobenthos found in the upper Citarum River and identify the source of their pollution source. The sediment and macrozoobenthos are samples using the grab sampling method. Microplastic identification is carried out by Fenton’s oxydation method. The result shows that macrozoobenthos species are only found at the Wangisagara sampling station, indicating that the Upper Citarum River is already polluted in some sampling locations, especially downstream. Microplastic particles are found in all sediment samples with an average microplastic concentration of 15.7 particles / 100 g of wet sediment. The highest concentration of microplastics is found at the Nanjung sampling station. The potential sources of microplastic pollution in the Upper Citarum River are the textile industry activities and the accumulation of plastic waste. The types of microplastic particles identified in the Upper Citarum River are fibers and fragments with a predominantly size of 1001 - 5000 µm

Integrating Traditional Musical Instrument into Mobile Augmented Reality: The Effect on Creative Thinking and Attitudes in Science Learning

This study aims to investigate the integration of traditional musical instruments ‘Angklung’ and Mobile Augmented Reality (AR) in science learning activities. The activity is intended to stimulate students’ creative thinking and cultivate a positive attitude towards science learning. The instrument for measuring creative thinking consists of four essays based on indicators of creative thinking: fluency, flexibility, originality, and elaboration. The instrument of students’ attitudes consists of relevance and satisfaction aspects, with nine questions for each aspect. The study used a one-group pre-and post-test design on 32 8th-grade students at one of the junior high schools in West Java Province, Indonesia. The study procedure is a pre-test, learning activity using Mobile AR, posttest, and survey distribution. The study found differences in the pre-and post-test scores of students, with N-gain scores for all indicators of creative thinking ranging from 0.41 to 0.48, including in the “Medium” category. The survey results indicate that students’ attitudes towards relevant and satisfaction aspects have average scores of 3.53 and 3.58, respectively, classified as “Very Good”. Consequently, this study concludes that integrating traditional musical instruments into Mobile AR affected creative thinking and fostered positive attitudes in science learning. The results of this study provide valuable insights for developing innovative educational strategies.

Comparison Analysis of Eco-Friendly and Non Eco-Friendly Packaging in Meeting Market Demands for Home Industries to Support the Achievement of Sustainable Development Goals in West Java

In recent decades, the use of plastic packaging has increased significantly worldwide, including in Indonesia. The amount of waste produced in Indonesia, according to the National Waste Management Information System Data of the Ministry of Environment and Forestry, reached 19.45 million tonnes by 2022, while the West Java Province itself produced about 1.07 million tonnes of garbage per month. One of the contributing activities of the waste is the use of plastic packaging by household industry enterprises. The more prevalent use of plastics is by household activity, which accounts for 39.63% of the total use of garbage. This is due to the function and quality of the packaging that are of concern to entrepreneurs and consumers, but the need for support for the implementation of green development can affect the effect of packaging being environmentally friendly. In this study, we will compare the quality of eco-friendly and non-ecologically friendly packaging using the House of Quality (HOQ) method. HOQ is a method that can provide knowledge of the expectations and wishes of customers for a product. Thus, through this comparison test, we get recommendations for packaging results according to customer expectations that can be applied to the household industry. It emerged that the first order of priority that needs to be considered is packaging that is not easily damaged/broken and the last priority for consumers in choosing packaging is the weight of packaging. The implementation of this research also results in an external target, which is an indexed international proceeding. The benefits of this research for researchers are insight and experience, as well as basic research material related to sustainable development goals, fund analysis, and market needs that can be applied to dedication and teaching.

Politics and civil society in regional waste management

Indonesia, like the majority of countries throughout the world, is grappling growing waste management issues. On a national or regional level. As a result, an effective program to limit garbage disposed of in landfills is required. Collaboration between municipal government and civic society is one option. This study examines the pattern of synergy between local government and community organizations in enhancing trash management through the case of coordinating waste management in Garut Regency, West Java Province, Indonesia. We modified the Collaborative Governance Framework and performed in-depth interviews with stakeholders, as well as a search for documentary sources and transect tracing. We gathered qualitative information from stakeholders about their experiences and perceptions of synergy patterns between sub-district trash bank administrators and district governments. The data was analyzed in three stages: data reduction, presentation, and conclusion. The collaborative governance paradigm of Anshell and Alison is applied to data analysis. As a result, it was discovered that the Garut Regency waste bank WhatsApp group offered sub-district waste bank administrators with an effective waste management communication space. Waste managers might be subject to a variety of local government laws. However, because the number of Waste Bank management members is still restricted, it is insufficient to address regional waste management issues.

Comparison of distance-based spatial weight matrix in modeling Internet signal strengths in Tasikmalaya regency using logistic spatial autoregressive model

To ensure that national development objectives in rural areas are achieved evenly and sustainably, the Government of Indonesia applies the principles of Village Sustainable Development Goals (SDGs), which are derivative programs of SDGs. One of the indicators in measuring the progress and independence of villages in Indonesia is the availability of cellular phone signal access. Cellular phone signals have a vital role because most internet users in Indonesia rely on mobile data connections from cellular operators. However, the signal emitted by a provider tower has a limited range. According to the data of the Developing Villages Index in 2022, Tasikmalaya Regency is one of the regencies with the highest number of villages that have weak signal strength in West Java Province, Indonesia. To examine the effect of distance and height difference between the placement of the nearest provider tower and the location of the Village Office on the internet signal strength category in Tasikmalaya Regency, Logistic Spatial Autoregressive modeling is needed. In this study, the Bayesian Markov-Chain Monte Carlo estimation method was used, because it has advantages in flexibility and computational efficiency. In spatial modeling, there is a spatial weight matrix determined by the researcher’s understanding of the observed phenomenon. The variable observed in this study is signal strength, which has an orientation at a distance. However, there are several types of distance-based spatial weight matrices, such as K-nearest neighbor, radial distance, power distance, and exponential distance. To determine the most suitable distance-based spatial weight matrix in internet signal strength modeling, the four (4) weight matrices were compared based on the goodness of fit measure models, calculated from the confusion matrix. The results of the analysis showed that the radial distance weight matrix with a threshold distance of d = 1.7km is the most suitable use of distance-based spatial weight matrix in internet signal modeling in Tasikmalaya Regency. The weight matrix exerted a positive spatial autocorrelation effect of 57.141%. In addition, the height difference factor between the location of the provider tower with the location of the village office has a greater effect than the horizontal distance.

Food security status in Cirebon Regency and how it could lead To sustainability

Cirebon Regency is in West Java Province and it’s one of the largest rice producer in Indonesia so that Cirebon Regency has a rice surplus. West Java is included as a region with access rice availability and the source of rice comes from within the West Java region itself, so there is minimal intervention from other regions in terms of meeting rice needs. In an effort to maintain rice resilience, strategies that can be implemented by West Java Province include maximizing the availability of rice in the region to meet local needs, distributing part of its production to surrounding deficit areas, and maintaining the productivity of rice fields. The results of the review literature, food security were not realized in Cirebon Regency because exports and imports of rice production were not properly recorded, distribution of rice production was not monitored, supply stability and price affordability were not controlled, access and information to markets are limited.. The regional government is implementing an agricultural intensification policy, especially in cultivating rice considering that the amount of agricultural land is decreasing, but behind the success there is the potential for climate change which could cause a decrease in productivity. In order to support sustainable food security in Cirebon Regency, it is necessary to analyzed the availability and distribution patterns of rice from upstream to downstream. This pattern is expected to answer the uncertainty of rice availability in Cirebon Regency and its relationship in supporting food sustainability in the future. The method that will be used to answer this problem is to carry out primary data analysis at the rice mill level in Cirebon Regency. Apart from that, the rate of land conversion as a factor influencing rice production is used as analysis material for recommendations for the sustainability of food availability in Cirebon Regency. Food security and sustainability efforts can be achieved with policy changes and transformation of food system governance.

Analysis Factor of Diarrhea with Latrine Ownership and Clean Water Availability in Indonesia

The study examines the relationship between Diarrhea, Latrine Ownership, and Clean Water Availability in Indonesia, specifically focusing on 2016 to 2021. According to the 2018 RISKESDAS, the age group with the highest diarrhea prevalence, as health workers diagnosed, was 1 to 4 years (1.5%), followed by infants (9%). West Java Province had the highest prevalence of diarrhea by province, with a rate of 186.809. The purpose is to analyze data related to latrine ownership and the availability of clean water about the incidence of diarrhea in Indonesia. The method is meta-analysis. We used a cross-sectional approach to collect secondary data from articles from March to April 2023. The results show that ownership of a latrine that does not meet the requirements is 2,013 times more likely to cause diarrhea than ownership of a latrine that meets the requirements. From the results of the meta-analysis of the variable availability of clean water, it is known that the availability of clean water that does not meet the requirements is 1,858 times more at risk of causing diarrhea than the availability of clean water that meets the requirements. The conclusion is that the variable that has the most significant influence on latrine ownership and the availability of clean water is latrine ownership. We suggest minimizing risk factors by counseling the community, emphasizing the importance and benefits of having healthy latrines that meet requirements and the availability of clean water to prevent diarrheal disease.

Increasing Rice Productivity and Farming Income by Implementing Bioproduct-Based Environmentally Friendly Rice Cultivation Technology in Indonesia

The application of environmentally friendly rice cultivation technology (EFRC) is one of the innovations in rice cultivation in irrigated rice fields. Bioproduct-based EFRC can optimize the potential of agricultural resources in situ, so that the soil becomes fertile, conserves land and environmental resources, and increases rice productivity to support government programs to achieve sustainable self-sufficiency in Indonesia. The purpose of this research is to determine the level of technical feasibility and feasibility of applying EFRC technology before it is widely developed in Indonesia. This study was conducted in West Java Province using the on farm client oriented adaptive research (OFCOAR) approach. Experiments were carried out by applying the EFRC technology package by cooperative farmers on 10 ha of land, and the results were compared with the technology commonly applied by farmers before the study. The parameters assessed were agronomic performance (plant height, harvesting age, number of grain/panicles, 1,000 grain weight, and productivity), yield motive, and financial feasibility (income, RCR, and BCR). The results showed that by applying EFRC technology, the agronomic performance of rice plants (plant height, number of grains per panicle, weight of 1,000 grains) approached or even exceeded the yield potential of the varieties planted. Rice productivity increased by an average of 23.62% and is financially profitable with an R/C ratio greater than one compared with the existing technology. Thus, EFRC technology is technically and financially feasible to be developed more widely in Indonesia.

Study on the potential and development policy of beef cattle in Cianjur district, West Java province

The growth of beef cattle in the Cianjur district is crucial in increasing national beef production. The objective of the study was to assess the potential for beef cattle development in terms of resources, population dynamics, and development policies. This study was carried out in 2022, involving 25 beef cattle farmers and the Animal Husbandry Services of the Cianjur district as respondents. Descriptive qualitative analysis was employed. The results of the study show that (1) the agricultural land in Cianjur covers 237.5 thousand hectares (equivalent to 66% of the total land area), which has the potential to provide livestock with forage; (2) in general, beef cattle farming technology has been well developed at the farmers level; (3) in the last five years, the beef cattle population in Cianjur district increased by 2.98% annually, from 39.90 thousand heads (2018) to 44.56 thousand heads (2022), and (4) policy to increase beef cattle population in Cianjur district includes the Beef Cattle Corporate Village (BCCV) Program. This study suggests that policy is needed to support the success and development of the beef cattle business within the framework of a sustainable development program.

Implementation of K-Means Clustering in Food Security by Regency in East Java Province in 2022

Food is the main need that society must fulfill. If food security is disrupted, it will have a negative impact on the nation's life. The agricultural sector has an important role in West Java Province. This province has a large area of agricultural land, so it has high potential to produce abundant agricultural production. However, knowing the adequate number of farmers is very important. Therefore, the implementation of K-Means Clustering can make a significant contribution to the East Java Provincial Agriculture Service in grouping farmers by district. To achieve optimal results, determining the best K value needs to be considered carefully. K-Means Cluster Analysis is a method of non-hierarchical Cluster Analysis that groups data into one or more groups. Data with the same characteristics is grouped into one cluster and data with different characteristics is grouped into another cluster. The data used in this research are land area and rice production in the Regency of East Java Province in 2022. Based on the results of research with the object of Food Security, it can be concluded that, the results of the analysis of the application of manual data mining calculations in Excel Software using the K-Means Clustering method, resulted in two types of clustering in the form of C0, namely the Highest Land Area and Production group with 4 districts: Jember Regency, Ngawi Regency, Bojonegoro Regency and Lamongan Regency, for C1 clustering, namely the Lowest Land Area and Production group with 25 districts in East Java Province

Analysis of stress-related gene expression in lobster seeds (Panulirus sp.) post formalin stress test

Indonesia is the potential international-scale lobster economic activity due to the abundant supply of tropical lobster seeds Panulirus sp., however the lobster cultivation sector have still resulted in problems of low survival during the rearing period. This study aimed to analyze the expression levels of the HSP70 gene related to stress response in lobster seeds exposed to formalin dose of LC70 for 1 h. Seeds were obtained from catching lobsters at Ujung Genteng Beach, Sukabumi City, West Java Province, with an average weight of 0.0254±0.004 g and a length of 2.3314±0.1549 cm. The observation parameters tested were the gene expression and survival rates of the post-soaking lobsters. The results showed that formalin immersion at a dose of 220 ppm on juvenile-stage lobster seeds resulted in the death of 70% of the population and the ability to express the stress gene HSP70 at different fitness levels were different with the highest expression level found in fit condition lobster seeds was 2.949±0.420.

Analysis of the concept of circular economy application by small and medium industries in West Java province (a case study: Padamukti and Cibodas villages, Solokan Jeruk district, Bandung regency)

Although small and medium enterprises (SMEs) have played an important role in Indonesia’s economic growth, they bring various environmental problems. SMEs in the manufacturing sector, also known as small and medium industries (SMIs) are the majority of business entities in Indonesia and are one of the most significant polluters. This study focused on several SMIs located within two villages (i.e. Padamukti and Cibodas) alongside the Citarik River, which is one of the Citarum River tributaries. The study aimed to identify the concept of circular economy application by SMIs in West Java Province consisting of an understanding of (1) the circular economy concept and (2) internal and external factors of the circular economy application. In this study, we applied the snowball technique, closed questionaries, strengths-weakness-opportunities-threats (SWOT), and quantitative strategic planning matrix (QSPM). There were 10 selected respondents, including 4 respondents who were waste generators, while 6 respondents were classified as waste beneficiaries. The study found that 100% of the involved respondents had never heard or understood the concept of the circular economy even though they had partially applied the 5R principles. By using SWOT, driving and barrier factors were identified. The reprocessed waste became a strength factor, while the lack of knowledge and expertise in waste management were two major weaknesses. Meanwhile, there was attention and encouragement from the government for SMIs that implement environmentally friendly businesses as an opportunity factor, and insufficient market availability or consumers are part of the external analysis. Sequentially, using QSPM we suggest that socialization of the circular economy concept needs to be carried out in the wider community as the priority strategy and policy recommendations, followed by policymaking and guidelines for effective circular economy implementation.

The “dish system” for calculating wages in rice farming in Majalengka District, West Java Province

The “dish system” for calculating wages in rice farming in Majalengka District, West Java Province

Index and Sustainability Status of Agricultural Mechanization for Paddy Field in Indonesia

The use of agricultural machinery is one of the important factors in increasing agricultural production. A quantitative assessment of the agricultural mechanization index and its impact on agricultural production is needed in planning the development of agricultural mechanization nationally. This study aims to determine the value of the agricultural mechanization index which consists of the degree, level, and capacity of agricultural mechanization for tools and agricultural machinery for pre-harvest rice (2-wheel tractor, 4-wheel tractor, water pump, and rice transplanter). This research was conducted in several stages, namely collecting data, observing the working capacity of 3 units of machinery for each type of machinery, processing data and making agricultural mechanization index maps. Based on the results of the study, it was found that the average value of the degree of agricultural mechanization for 2-wheel tractors, 4-wheel tractors, water pumps and rice transplanters was 56.68%, 55.13%, 10.55 % and 13.94%. The average value of mechanization level in Indonesia is 0.45 hp/ha and the average value of mechanization capacity for rice pre-harvest activities in Indonesia is 1.28 kW hour/ha. In addition, based on the results of the classification of mechanization level, cropping index and rice productivity, it can be seen that the provinces of East Java, Central Java, West Java, Banten, DI Yogyakarta and Aceh are provinces that are recommended to increase the number of agricultural machinery, especially 2-wheel tractors, 4-wheel tractors. water pump and rice transplanter.

Charting sustainable routes: Navigating uncertainty in the supply chain for lasting loyalty

This study investigates the dynamics of literacy, trust, awareness, loyalty, and corporate sustainability among Social Security Management Agency (BPJS) of Employment. Social Security Management Agency (BPJS) of Employment in West Java, Banten, and Lampung Province, Indonesia. Employing structural equation modeling, the study reveals significant relationships and mediating effects. Literacy emerges as a key factor, positively impacting loyalty and corporate sustainability. Trust is found to directly influence corporate sustainability but not loyalty. Awareness significantly affects both loyalty and corporate sustainability. Notably, loyalty plays a mediating role in the relationships between literacy, awareness, and corporate sustainability. These findings contribute to literacy and engagement models, sustainability frameworks, and mediating models in organizational literature. Practical implications include the recommendation for literacy enhancement programs, multifaceted trust-building strategies, proactive communication campaigns, and loyalty-building initiatives. Future research recommendations encompass longitudinal studies, diverse organizational settings, mixed-methods approaches, exploration of moderating variables, and intervention studies. The research contributes to a nuanced understanding of participant engagement and sustainability perceptions, offering actionable insights for organizations, particularly those in the public sector like Social Security Management Agency (BPJS) of Employment.

A new amino acid substitution in the MvALS1 gene of metsulfuron-methyl resistant biotypes Monochoria vaginalis (Burm. f.) C. Presl from West Java, Indonesia.

The most bothersome weed in rice fields in the Indonesian province of West Java is Monochoria vaginalis (Burm. F.) C. Presl, an aquatic herbaceous plant. Metsulfuron-methyl has long been used in wetland rice in West Java with a high enough intensity. However, the case of Monochoria vaginalis resistance to metsulfuron-methyl herbicides in Indonesia has not been widely reported and investigated. The study aims to (1) classify the resistance level of M. vaginalis toward metsulfuron-methyl, (2) identify Target Site Resistance (TSR) mechanism mutations in the MvALS1 gene of the resistant biotype of M. vaginalis. The Whole Plant Pot Test method was utilized to assess the resistance level of Monochoria vaginalis. Following that, all samples were subjected to DNA sequencing using the PCR method to identify mutations in the MvALS1 gene from the resistant biotype. After then, this study used DUET, a server with an integrated computational methodology, to anticipate the effect of mutations on protein stability. The result showed that Monochoria vaginalis from Rawamerta, Karawang showed a moderate level of resistance to metsulfuron-methyl with a resistance ratio of 6.00, Patokbeusi, Subang showed a low level of resistance to metsulfuron-methyl with a resistance ratio of 3.89, compared to susceptible Monochoria vaginalis. Nucleotide base alignment in the MvALS1 gene revealed that base substitutions occurred in the Monochoria vaginalis biotype from Rawamerta and Patokbeusi, resulting in 5 amino acid substitutions: Ser-64-Ala, Asp-66-Glu, Asn-240-Asp, Glu-426-Asn, and Ser-469-Asn and Sukra: Ser-64-Ala, Asp-66-Glu, and Asn-240-Asp. The analysis showed that S64A, D66E, and N240D stabilize the protein, whereas E426N and S469N destabilize it. This study confirms for the first time that Ser-64-Ala, Asn-240-Asp, and Glu-426-Asn amino acid mutations were found in cases of M. vaginalis resistance to metsulfuron-methyl (ALS inhibitor).

Influence of fine aggregate types for the achievement of concrete quality

Fine aggregates in the form of sand are granulated materials, which generally measure between 0.0625 to 2 millimeters. Sand as a fine aggregate mixed with cement and water becomes a concrete mixture that has a role in the strength of construction. This study aims to determine how much influence the fine aggregates or sand of four different mining sites have on the compressive strength of concrete. The method used is an experiment, based on the results of laboratory tests of compressive strength tests at the age of concrete 7, 14 and 28 days for fc’25 or 25 MPa quality concrete with a mix of designs for fine aggregates from Leles sand, Kuyamut sand, Cikamiri sand, and Cilopang sand, Garut Regency West Java Province Indonesia. The aggregates tested include moisture content, sludge content, organic content, dry saturation, waand ter absorption affects the quality of concrete and improves quality strength with the same treatment for laboratory testing. The results of the analysis with 28 days of concrete compressive strength testing obtained the achievement of the highest concrete strength, namely with Cilopang sand 27 MPa, allowed by Kuyamut sand 26 Mpa, Leles sand 25 MPa and Cikamiri sand 23 MPa. Based on the results of concrete strength testing for up to 28 days, there are three sources of fine aggregates that can reach a minimum of fc’ 25, and there is one sand source that has a compressive strength value of concrete.