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All Journal Jurnal Teknik U Karst Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan JMTS: Jurnal Mitra Teknik Sipil Jurnal Teknika
Sugeng Dwi Hartantyo
Departement Of Civil Engineering, Faculty Of Engineering, Universitas Islam Lamongan
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PENGARUH LIMBAH PABRIK GULA MOLASE SEBAGAI BAHAN TAMBAH (ADMIXTURE) KUAT TEKAN BETON K-175 DENGAN MENGGUNAKAN PASIR LOKAL PASIR JOMBANG Susilo Abadi Al-hasan; Sugeng Dwi Hartantyo
U Karst Vol. 4 No. 1 (2020): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v4i1.701

Abstract

Advances in technology have had an impact on the development of construction. Concrete is one material that is widely used in construction. Improving the quality of concrete is the main topic of the researchers to obtain concrete that is suitable for their needs and economically. Molasses is a waste that can be used as concrete added material because it has content that is considered capable of improving the quality of concrete. The purpose of this study is to determine the effect of adding molasses to the compressive strength of K175 concrete using local sand with the method used is the experimental method and the study of previous research theories. Variation in the percentage of the addition of molasses used 0%, 0.4%, and 0.5% by weight of cement. The specimens used were cylindrical as many as 12 specimens. Compressive strength testing is carried out at seven days of concrete. The test results showed the highest compressive strength was obtained with a percentage increase in molasses as much as 0.4% with a compressive strength value of 18.50 Mpa and decreased compressive strength at the addition of 0.5%.Kemajuan dalam bidang teknologi berdampak pada berkembangnya pembangunan bidang konstruksi. Beton merupakan salah satu material yang banyak digunakan dalam konstruksi. Perbaikan kualitas beton menjadi topik utama para peneliti untuk mendapatkan beton yang sesuai dengan kebutuhan dan ekonomis. Molase merupakan limbah yang dapat digunakan sebagai bahan tambah beton karena memiliki kandungan yang dianggap mampu meningkatkan kualitas beton. Tujuan dari penelitian ini yaitu untuk mengetahui pengaruh penambahan limbah tetes tebu (molase) terhadap kuat tekan beton K175 menggunakan pasir lokal dengan metode yang digunakan yaitu metode eksperimental dan kajian teori penelitian terdahulu. Variasi persentase penambahan molase yang digunakan 0%, 0,4%,  dan  0,5%,  dari  berat semen.  Benda uji  yang  digunakan berbetuk silinder sebanyak 12 benda uji. Pengujian kuat tekan dilaksanakan pada umur beton 7 hari. Hasil pengujian menunjukkan kuat tekan tertinggi diperoleh dengan prosentase penambahan molase sebanyak 0.4% dengan nilai kuat tekan 18.50 Mpa dan mengalami penurunan kuat tekan pada penambahan 0.5%. 
Waste Concrete as a Substitute for Coarse Aggregate Materials for Compressive Strength of Concrete Fc' 20,75 MPa Bobby Damara; Sugeng Dwi Hartantyo
U Karst Vol. 6 No. 1 (2022): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v6i1.2338

Abstract

Concrete from construction waste resulting from the construction of new infrastructure replacing old infrastructure can significantly impact the environment. Therefore, there is a need for the proper management of concrete waste. One of the uses of concrete waste is to use it as a coarse aggregate material in the manufacture of Concrete. Using waste concrete is obtaining a material that almost resembles coarse aggregate. This study aimed to determine the optimum content of Concrete with the addition of waste concrete as a substitute for coarse aggregate. This research refers to the standards of SNI and ASTM. The research was conducted by testing the waste concrete to determine whether it is suitable for coarse aggregate material. After that, the compressive strength was tested by curing for 28 days. This research was conducted with 3 samples with 0%, 50%, and 100% of the planned use of concrete waste with concrete compressive strength of Fc' 20,75 MPa. The results showed that the average compressive strength of the 50% concrete waste was 20.59 MPa, and the 100% concrete waste was 13.83 MPa. From these results, it can be seen that the most optimum content of substituted aggregate is a mixture variation of 50%, so the results of this study can be used as a reference in the utilization of recycled concrete waste as a raw material or a substitute for the composition of the concrete mixture.
STUDI PENGARUH PENAMBAHAN ABU SEKAM PADI TERHADAP KUAT TEKAN BETON Samsudin Samsudin; Sugeng Dwi Hartantyo
Jurnal Teknika Vol 9 No 2 (2017): Jurnal Teknika
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/teknika.v9i2.58

Abstract

Rice husk is the waste from the rice mill has a dominant silica content that is equal to 93% and almost the same content of silica contained in the microsilica manufactured. By its nature when mixed into the concrete mix will improve the characteristics of concrete. In this research, rice husk ash was added to the concrete mixture of Fc 'K-175 Kg / cm2 with a variation of 0%, 8%, 10%, and 12% husk ash ash taken based on the weight of cement. This research aims to determine the value of concrete compressive strength achieved from rice husk ash mixture in K-175 Kg / cm2 concrete. Concrete mortar design using ASTM method. Test specimens were made for each addition of the percentage of husk ash is as much as 3 samples, with cylinder mold size 15 cm diameter with height 30 cm. Based on Table 4:22 in the results obtained that there is a decrease in strength on each addition of ash rice husk level. It is known that the normal compressive strength of 28 days old concrete is 226,47 kg / m2 and the lowest compressive strength is in the addition of rice husk ash 12% age 28 day that is 129,41 kg / m2
Co-Authors Alimatul Hidayah Beni Hermanto Bobby Damara Faulidatul Khasanah Hammam Rofiqi Agustapraja Hardi Susilo Heri Wahyudiono Heri Wahyudiono Herlan Pratikto Heru Prasetyo Muhammad Hakim Susianto Mukhammad Alifuddin Rasiyo Hepiyanto Romadhon Romadhon Samsudin Samsudin Susilo Abadi Al-hasan Totok Dwi Sutanto Yosef Cahyo Setianto Poernomo