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Yulita Arni Priastiwi
Departemen Teknik Sipil Jl. Prof.Soedarto SH Tembalang Semarang. 50275
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Transportation

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Pemanfaatan Batu Pumice Dalam Mengurangi Penurunan Performa Beton Pasca Kebakaran Thoyfurrohman, Muhammad Akhis; Cahyo, Bagas Indra; Yulianti, Erika; Nuroji, Nuroji; Priastiwi, Yulita Arni
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 1 (2022): Volume 12 Nomor 1, Maret 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i1.569

Abstract

Abstrak Beton yang mengalami kebakaran pada suhu 400ËšC akan mengalami degradasi kekuatan hingga kuat tekan sisa 58,40% Hal ini akan mempengaruhi kualitas/kekuatan struktur beton tersebut dan akan menyebabkan beton menjadi getas, dan memungkinkan struktur mengalami kegagalan. Diperlukan upaya proteksi pasif kebakaran dengan menggunakan material yang memiliki ketahanan terhadap api. Salah satu material yang memiliki ketahanan terhadap api yang baik adalah batu pumice. Penelitian ini bertujuan untuk mengetahui nilai kuat tekan dan laju penurunan kekuatan beton pumice yang menggunakan Pasir Muntilan sebagai agregat halus akibat perubahan suhu pembakaran pada 27°C, 300°C, dan 600°C. Penelitian menggunakan 45 buah benda uji silinder beton berukuran diameter 15 cm dan tinggi 30 cm. Dengan variasi penggantian batu pumice 0% , 25%, 50%, 75% dan 100% dari volume agregat kasar dan Faktor Air Semen (FAS) sebesar 0,5. Pengujian kuat tekan dengan alat compression saat umur 28 hari. Hasil penelitian ini menunjukkan bahwa suhu pembakaran mempengaruhi kuat tekan beton pumice dengan pasir Muntilan pada semua komposisi proporsi. Semakin tinggi suhu pembakaran maka semakin besar penurunan yang terjadi. Besaran penurunan kuat tekan akibat kenaikan suhu pembakaran berkisar antara 0,16% hingga 55,38% lebih lambat dibandingkan dengan beton tanpa menggunakan batu pumice Kata kunci: Beton, Batu Pumice, Performa Beton  Abstract Concrete that has been burned at 400° C will experience degradation to a residual compressive strength of 58.40%. This will affect the strength of the concrete structure and will cause the concrete to become brittle, thus allowing the structure to fail. Then it will require passive fire protection by using materials that have some resistance to the fire. One material that has the potential to create fire resistance is pumice stone. The purpose of this study was to determine the value of compressive strength and the rate of reduction in compressive strength of Muntilan sand pumice concrete due to the changes in combustion temperature of 27ËšC,300ËšC, and 600ËšC. In this study, used a 45 pieces concrete cylinder with a diameter of 15 cm and a height of 30 cm. with variations of pumice stone proportion of 0%, 25%, 50%,75% and 100% of the volume of coarse aggregate with a water cement ratio of 0.5. Compressive strength test with a compression device at the age of 28 days. The results of this study indicate that the combustion temperature affects the compressive strength of pumice concrete. The higher the combustion temperature, the higher the strength reduction that occurs. The amount of reduction in compressive strength due to an increase in combustion temperature ranged from 0.16% to 55.38% of the control specimens. Keywords: Pumice, Compressive Strength, Temperature
Pengaruh Serbuk Cangkang Kerang Terhadap Kuat Tekan Bebas Tanah Lempung Lunak Pesisir Kusumastuti, Dyah Pratiwi; Priastiwi, Yulita Arni; Sarminingsih, Anik
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 31, Nomor 2, DESEMBER 2025 (IN PROGRESS)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v31i2.71174

Abstract

As an archipelagic country, Indonesia has extensive coastal areas that are intensively developed for infrastructure. Kosambi District in Tangerang Regency is one of the rapidly growing coastal regions due to its proximity to Soekarno–Hatta International Airport. However, the area is predominantly underlain by soft marine clay soils with low bearing capacity and high compressibility, which pose challenges for infrastructure development. To improve soil stability, soil stabilization methods are required to enhance unconfined compressive strength and undrained shear strength. This study aims to analyze the effect of cockle shell powder addition on the unconfined compressive strength and undrained shear strength of soft marine clay. Laboratory tests were conducted on untreated soil and soil stabilized with 5%, 10%, 15%, and 20% cockle shell powder by dry weight of soil. The results indicate that the optimum performance was achieved at a 10% addition, resulting in a 24.86% increase in unconfined compressive strength compared to untreated soil. In addition to improving strength, the addition of cockle shell powder reduced water content and enhanced interparticle bonding, thereby improving soil stability. These findings demonstrate that cockle shell powder has strong potential as an effective stabilizing material for soft coastal clay soils.
Co-Authors . Widayat Abi Nabil Hanif Adi Putra, Kukuh Cahya Andi Retno Ari Setiaji Andreanto, Stefanus Kristian Anik Sarminingsih, Anik Arif Hidayat Arif Hidayat Arif Hidayat Badru, Zidny Salamsyah Bambang Pardoyo Bima Bima Blinka Hernawan Prasetya Cahyo, Bagas Indra Carita, Nensi Christhy Amalia Sapulete, Christhy Amalia Daryanto, Dwi Dina Daniaty Edo Antonio Enda Suranta Sitepu Gardha Satria Fadillah Gilbert Fernando Han Ay Lie Hardi Wibowo Himawan Indarto Himawan Indarto Husna, Khotimatul Ifan Hasnan Taufiqur Rohman Ilham Nurhuda Ilham Nurhuda Iswandi Imran Kenny Ghalib Kusumastuti, Dyah Pratiwi Luthfiana, Nisa M. Lutfi Moh Nur Sholeh Mona Dwi Anggraeni Muhammad Rizkivano Akbar Muhrozi Muhrozi Muhrozi Muhrozi Nauval Rabbani Nazila, Kamila Shaomi Nuroji Nuroji Nuroji Nuroji Pratomo, Shendy Eko Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto Putriagsari, Farah Naurah Ratna Purwaningsih Rizki Amalia Putri Rudi Yuniarto Adi Samuel Parluhutan Saputra, Nugraha Eka Sekarningtyas, Nazifa Sendrika, Difa Bagus Setiadi, Muhammad Irfan Silviana Silviana Sri Prabandiyani Retno Wardani Sri Prabandiyani Retno Wardani Sri Prabandiyani Retno Wardani Sri Tudjono Sukamta Sukamta Tamrin, Rinaldo Thoyfurrohman, Muhammad Akhis Ulayya, Inandhiya Ayu Undayani Cita Sari Undayani Cita Sari Vicky Ramadhani, Vicky Windu Partono Windu Partono Yohanes Agung Nugroho Yulianti, Erika Zainuddin, Zainuddin