Pengendalian Kualitas Berdasarkan Uji Kuat Tekan Produk Beton dan Penentuan Failure Mode and Effect Analysis di PT Sumber Wijaya Sakti
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| Issue | Vol 8 No 1 (2025): Talenta Conference Series: Energy and Engineering (EE) | |
| Section | Articles | |
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Copyright (c) 2025 Talenta Conference Series: Energy and Engineering (EE)  This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. |
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| DOI: | https://doi.org/10.32734/ee.v8i1.2646 | |
| Keywords: | Beton Ready Mix Kuat Tekan SQC X̄-Chart FMEA Pengendalian Mutu Ready-Mix Concrete Compressive Strength Quality Control | |
| Published | 2025-07-28 |
Abstract
Pesatnya pembangunan infrastruktur telah mendorong peningkatan permintaan terhadap beton ready mix yang berkualitas dan konsisten. Penelitian ini menggunakan metode Statistical Quality Control (SQC) dengan pendekatan X̄-Chart dan R-Chart, serta Failure Mode and Effect Analysis (FMEA) untuk melakukan analisis risiko. Berdasarkan hasil analisis SQC, diketahui bahwa meskipun variasi antar sampel masih berada dalam batas kendali, lebih dari setengah nilai rata-rata kuat tekan justru melebihi batas kendali yang telah ditetapkan. Oleh karena itu, proses produksi dinyatakan tidak stabil secara statistik. Evaluasi terhadap mutu rencana sebesar 200 kg/cm² menunjukkan bahwa hanya 44,44% batch beton yang memenuhi standar. FMEA mengidentifikasi tiga kegagalan utama dengan RPN tertinggi, yaitu komposisi air tidak sesuai, kesalahan penimbangan material, dan keterlambatan pengiriman. Temuan ini menegaskan perlunya peningkatan pengawasan proses produksi dan penerapan sistem kontrol mutu yang lebih ketat untuk menjamin kualitas beton yang berkelanjutan.
The rapid development of infrastructure has driven an increase in demand for quality and consistent ready-mixed concrete. This study conducts risk analysis using Failure Mode and Effect Analysis (FMEA) and the Statistical Quality Control (SQC) method with X̄-Chart and R-Chart methodologies. According to the SQC analysis's findings, over half of the average compressive strength values were higher than the predefined control limits, even if the variation between samples was within them. Therefore, the production process was declared statistically unstable. Evaluation of the planned quality of 200 kg/cm² showed that only 44.44% of the concrete batches met the standard. The FMEA identified three main failures with the highest RPN, namely incorrect water composition, material weighing error, and late delivery. These findings emphasize the need for increased supervision of the production process and the implementation of a stricter quality control system to ensure sustainable concrete quality.
