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Kusdiman Joko Priyanto
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Civil Engineering, Building, Construction & Architecture

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Journal : Journal Of Civil Engineering And Infrastructure Technology

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ANALISIS BETON KEROPOS PADA KOLOM STRUKTUR DENGAN METODE QUALITY CONTROL CIRCLE (QCC) rohmad nuryanto; Suryo Handoyo; Kusdiman Joko Priyanto
Journal of Civil Engineering and Infrastructure Technology Vol. 2 No. 2 (2023): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v2i2.3087

Abstract

Quality is a key factor that brings success in construction, growth, and improvement. Quality is a basic factor in consumer decisions that shapes determining the desired products and services. One of the factors that influences product quality is the quality control method, which will be able to improve the quality of the company's output by reducing the level of defects. The Quality Control Circle (QCC) method is a method that can be used to reduce defects in a relatively short time, can be carried out, and is easily implemented in small teams so that it does not involve all personnel in an organization. Apart from this, QCC can also save costs by improving quality because of its small organizational structure. To be able to survive in the midst of intense competition and the growth of the construction industry, companies must have advantages that other companies do not have. The determining factor of competitiveness is to improve quality. This effort was made by the company by making continuous improvements with the aim of reducing the number of product defects. The author used the quality control cylinder method to reduce defects in structural column work at Gadjah Mada University's Smart Green and Learning Center (SGLC) building project. The focus was on analyzing concrete structural columns to reduce defects and achieve a cost efficiency of 82.87%. Improvements were made to elements of the structural column work method, reducing 80% of defects. The QCC method was used to prevent defects from recurring in the product.
STUDI KUAT TEKAN BETON RINGAN STRUKTURAL DENGAN PEMANFAATAN ABU AMPAS TEBU, PASIR BATU APUNG DAN ABU BATU Setya Yudhatama, Yanuar; Arumningsih, Dian; Joko Priyanto, Kusdiman
Journal of Civil Engineering and Infrastructure Technology Vol 3 No 1 (2024): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v3i1.3509

Abstract

Pada era modern ini, perkembangan teknik sipil mengalami kemajuan sangat pesat dan gencarnya pembangunan infrastruktur yang ada di Indonesia. Seiring meningkatnya pekerjaan konstruksi kebutuhan akan beton terus meningkat, penelitian di bidang beton terus dilakukan. Oleh karena itu, inovasi beton dituntut guna menjawab tantangan, bersifat ramah lingkungan dan berat yang rendah. Seiring dengan keterbatasan sifat beton ringan, maka dari itu penelitian ini menggunakan abu ampas tebu, pasir batu apung dan abu batu. Metode yang digunakan adalah eksperimental. Penelitian ini dibuat 2 variasi mix design penggunaan batu apung kadar 50% dan 60% sebanyak 8 buah per variasi dengan umur pengujian 7, 14, 21, dan 28 hari. Hasil kadar optimum yang dapat didapatkan abu ampas tebu dan abu batu adalah 10% dari total cementitious dan 20% dari volume agregat halus. Kuat tekan yang dihasilkan variasi mix design BR-50% umur 7, 14, 21 dan 28 hari adalah 30,25 MPa, 27,71 MPa, 33,44 MPa dan 36,31 MPa umur 28 hari. Sedangkan kuat tekan yang dihasilkan variasi mix design BR-60% adalah 31,21 MPa, 29,62 MPa, 35,67 MPa, dan 38,22. Biaya yang dibutuhkan untuk membuat variasi BR-60% sebanyak Rp. 784.573 sedangkan biaya beton konvensional sebanyak Rp. 835.363 sehingga selisih antara harga beton konvensional dengan beton inovasi sebanyak Rp. 49.991.
PENGARUH VARIASI KONSENTRASI BAHAN TAMBAH FLY ASH DAN TERAK BAJA DITINJAU DARI KUAT TEKAN BETON Fitriadewi, Tina; Priyanto, Kusdiman Joko; Gunarso, Gunarso
Journal of Civil Engineering and Infrastructure Technology Vol 3 No 2 (2024): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v3i2.4291

Abstract

Concrete as the basic material of the structure in the construction of buildings is composed of hardening a certain mixture of water, cement, and aggregate. Concrete material is familiar in the field of Civil Engineering, because almost every building uses concrete as the main structure and complement, be it bridges, water buildings, or buildings. Because concrete is a composite material, the quality of concrete depends on each of the forming materials (Tjokrodimuljo. K,1996). This study used fly ash and steel slag added materials. In this study using an experimental method that aims to determine the effect of adding fly ash and steel slag levels with a percentage of fly ash 10% and steel slag 20%, fly ash 20% and steel slag 10% from the use of cement and fine aggregates and using conventional concrete as a comparison , and the cement water factor is determined to be the same in all variations, which is 0.45. Until thel used is cylindrical (d = 15cm; h = 30cm), the quality of concrete is planned to be 20 MPa. The number of samples is 18 pieces, each variation consists of 6 pieces tol, 3 samples for concrete compressive strength aged 7 days and 3 samples for concrete compressive strength aged 28 days. In the slump test, there was a reduction in the slump value, which was 12 cm for conventional concrete, 11 cm for variation I concrete mixture and 8 cm for variation 2 concrete mixture. The results of the compressive strength test showed an increase in maximum compressive strength at the age of 7 & 28 days with a percentage of fly ash 20% and steel slag 10% which was 19.91 MPa & 29.82 MPa and the lowest compressive strength occurred in conventional concrete, which was 16.32 MPa at the age of 7 days and 25.19 Mpa at the age of 28 days. With a percentage increase of 15.5% from conventional concrete
ANALISIS KUAT TEKAN REACTIVE POWDER CONCRETE DENGAN VARIASI SILICA FUME DAN LIMBAH SERBUK MARMER PADA PERAWATAN STEAM CURING Arumningsih , Dian; Sumina, Sumina; Priyanto, Kusdiman Joko; Putri, Dinda Ajeng Anindita
Journal of Civil Engineering and Infrastructure Technology Vol 4 No 1 (2025): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v4i1.4994

Abstract

In the current era of globalization, the need for concrete is increasing, triggering challenges to create good quality concrete. High- quality concrete innovation is developed through the improvement of concrete constituent materials and the addition of added materials. In this study, pozzolan material was used, namely silica fume and marble powder as filler. This concrete is Reactive Powder Concrete, where the constituent material of concrete is nanometer in size and removes coarse aggregate. The method used is experimental. The test specimen used is cylindrical concrete measuring 10 cm x 20 cm. This study aims to determine the optimum level of use of silica fume and marble powder with a variation in 0% levels; 5%; 10%; 15%; 20%; 25%; 30%; 35%; 40%; 45%; and 50%. The results of the study showed the optimum content of silica fume 15% of the total cementitious, and the optimum content of marble powder 30% of the total fine aggregate which obtained compressive strength of 12.74 MPa and 12.10 MPa at the age of 7 days. Then 16 pieces of RPC concrete were made with a test life of 7, 14, 21, and 28 days. Test specimens are given two treatment methods, namely steam curing and immersion. Of the two treatments applied, steam curing produces high initial compressive strength, with a maximum compressive strength of 66.24 MPa at 7 days old. While immersion treatment can produce high final compressive strength in RPC concrete which produces the highest compressive strength of 103.82 MPa at 28 days old.
Co-Authors Candra Latu Mowo Dian Arumningsih Dian Purnamawanti Erik Wahyu Pradana Fatin Nur Hidayah Fitriadewi, Tina Gunarso GUNARSO GUNARSO Hery Widijanto Pancawati, Vitria Paska Wijayanti Putri, Dinda Ajeng Anindita rohmad nuryanto Sari, Lidya Ayu Setya Kumala Setya Yudhatama, Yanuar Sumina Sumina Sumina Sumina Suryo Handoyo