Analisis Pengaruh Bahan Baku Tambahan Terhadap Peningkatan Kualitas Kuat Tekan Produksi Semen Di PT. Semen Indonesia Tbk.

Yahya, Fitriana Ratnadewi (2015) Analisis Pengaruh Bahan Baku Tambahan Terhadap Peningkatan Kualitas Kuat Tekan Produksi Semen Di PT. Semen Indonesia Tbk. Diploma thesis, Institut Technology Sepuluh Nopember.

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Abstract

Permasalahan yang dialami oleh PT. Semen Indonesia Tbk. adalah peningkatan kualitas kuat tekan produksi semen. Salah satu upaya meningkatkan kualitas kuat tekan semen melalui proses produksi dengan menggunakan material bahan baku dan bahan pendukung yang bersifat tak bisa diperbaharui, serta material bahan pendukung yang berasal dari hasil daur ulang. Pemanfatan ke-lima bahan baku tambahan yaitu clinker, gypsum, trass, batu kapur, dan fly ash yang digunakan untuk meningkatkan kualitas kuat tekan produk semen. Metode regresi linier berganda dan metode peta kendali X − R digunakan untuk menganalisis pengaruh bahan baku tambahan terhadap peningkatan kualitas kuat tekan produk semen serta menganalisis kuat tekan produk semen, apakah terkendali secara statistik atau tidak terkendali. Hasil dari analisis sebagai berikut. Analisis regresi linier berganda menunjukkan minimal terdapat salah satu dari bahan baku tambahan yang berpengaruh signifikan terhadap peningkatan kualitas kuat tekan produk, dan berdasarkan uji parsial menunjukkan bahan baku clinker, trass, batu kapur, dan fly ash berpengaruh signifikan terhadap peningkatan kualitas kuat tekan produksi semen. Analisis peta kendali X − R menunjukkan pada bulan Mei sampai dengan bulan Oktober tahun 2014 kuat tekan produk semen terkendali secara statistik. Kapabilitas proses pada bulan Mei dan Agustus tahun 2014 menunjukkan proses produksi semen sesuai dengan spesifikasi dengan nilai indeks kapabilitas sebesar 1,14 dan 1,36, sedangkan pada bulan Juni, Juli, September, dan Oktober tahun 2014 menunjukkan proses produksi semen tidak sesuai dengan spesifikasi dengan nilai indeks kapabilitas < 1. ===================================================================================================== Problems faced by the PT. Cement Indonesia Tbk. is an increase in the quality of the compressive strength of cement production. One of the efforts to improve the quality of the compressive strength of cement through the production process using raw materials and supporting materials that are nonrenewable, as well as material support material derived from recycled. The fifth additional utilization of raw materials, namely clinker, gypsum, trass, limestone, and fly ash used to improve the quality of compressive strength of cement products. Multiple linier regression method and control chart X − R methods used to analyze the impact of raw materials in addition to improving the quality compressive strength of cement products as well as analyzing the compressive strength of the cement product is statistically controlled or uncontrolled. The results of the analysis as follows. Multiple linier regression analysis shows there are at least one of the additional feedstock significant effect on improving the quality of the product compressive strength, and based on the partial test shows the raw materials clinker, trass, limestone, and fly ash significant effect on improving the quality of compressive strength of cement production. Control chart X − R analysis shows in May until the month of October 2014 the compressive strength of the cement product are statistically controlled. The capability of the process in May and August 2014 showed cement production process in accordance with the specifications of the capability index value of 1,14 an 1,36, whereas in June, July, September, and October 2014 showed cement production process does not conform to the specifications of the capability index value of less than one.

Item Type: Thesis (Diploma)
Additional Information: RSSt 519.535 4 Yah a
Uncontrolled Keywords: Kapabilitas Proses, Material Bahan Baku, Material Bahan Pendukung, Peta Kendali X − R , Regresi Linier Berganda
Subjects: Q Science > QA Mathematics > QA278.5 Principal components analysis. Factor analysis.
Divisions: Faculty of Mathematics and Science > Statistics > (S1) Undergraduate Theses
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 23 Nov 2018 03:49
Last Modified: 23 Nov 2018 03:49
URI: http://repository.its.ac.id/id/eprint/59996

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