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All Journal Media Komunikasi Geografi Jurnal Riset Rekayasa Sipil Journal of Civil Engineering and Vocational Education
Sri Rezki Artini
Politeknik Negeri Sriwijaya
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Social Sciences Transportation

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SIMULASI FUSI CITRA IKONOS-2 PANKROMATIK DENGAN LANDSAT-7 MULTISPEKTRAL MENGGUNAKAN METODE PAN-SHARPEN UNTUK MENINGKATKAN KUALITAS CITRA DALAM UPAYA PEMANTAUAN KAWASAN HIJAU (Studi Kasus Sekitar Kawasan Bandara Ngurah Rai-Badung Bali) Putra, I Wayan Krisna Eka; Fadly, Romy; Artini, Sri Rezki
Media Komunikasi Geografi Vol 15, No 1 (2014)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1324.186 KB) | DOI: 10.23887/mkg.v15i1.11424

Abstract

Tulisan ini bertujuan untuk menghasilkan citra yang memiliki kualitas lebih baik untuk memudahkan pemantauan kawasan hijau di sekitar kawasan Badara Ngurah Rai-Badung Bali. Data yang digunakan dalam proses fusi citra ini yaitu citra Ikonos-2 pankromatik (resolusi spasial 1 m) dan Landsat-7 multispektral  (resolusi spasial 30 m).  Metode yang digunakan dalam proses fusi citra ini yaitu Pan-Sharpen. Hasil yang diperoleh berupa citra berwarna dengan resolusi 1 meter yang lebih mudah didigitasi untuk pemantauan luas kawasan hijau.
The Effect of Addition Superplasticizer (Sikament-LN) with Variation of Percentage on Compressive Strength Foamed Mortar Lightweight Materials Pratama, M Ade Surya; Bermawi, Yusri; Artini, Sri Rezki; Nubli, Farhan; Pratama, Rangga Andika
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.465

Abstract

The foamed mortar (morbus) lightweight material consists of a mixture of sand, cement, water, and liquid foam (foam agent), which can improve the mechanical properties of clay soil and increase its bearing capacity. This research uses various variations of superplasticizer mixtures, namely by adding additional ingredients in the form of sikament-LN which will increase compressive strength by up to 40% at 28 days. This research needs to be carried out to determine the effect of sikament-LN on increasing the compressive strength of foamed mortar. The percentages of the sikament-LN mixture were 0.5%, 0.75%, 1%, and 1.25% with ages of 7, 14, and 28 days, each of which made 3 test objects in 4 variations of the mixture. The research results showed that the addition of sikament-LN to the 1.25% mixture did not meet the requirements because it produced a flowability of 23.5 cm and the mixture experienced a shrinkage of > 20% when placed in a cylindrical mold. All foamed mortar specimens experienced an average dry density increase of 1.994% at a curing age of 7 to 14 days and an average dry density increase of 4.044% at a curing age of 7 to 28 days. In a mixture of 0.5%, 0.75%, and 1%, at 28 days the maximum compressive strength value obtained was 841,667 kPa (more than the required 800 kPa). For the sikament-LN mixture, a maximum of 1% of the cement weight is recommended so that the hardening process occurs in the foamed mortar test object.
ANALISIS PENGARUH BIJI KARET TERHADAP KUAT TEKAN BETON Firdausa, Fadhila; Marpaung, Raja; Artini, Sri Rezki; Diba, Annadiyah Farah; Ria, Vicky Wisma; Iryani, Arista Widya
Jurnal Riset Rekayasa Sipil Vol 4, No 1 (2020): September 2020
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.101 KB) | DOI: 10.20961/jrrs.v4i1.44634

Abstract

The development of technology construction has reached a period of caring for the environment. Many things been developed to support environmentally friendly construction. Itcan be started from the use of a mixture of natural ingredients into a mixture of construction materials. Concrete is a construction material that is often used in Indonesia, given its ease, price, and durabilityAlong with the development of the concrete periods has experienced many advances, one of which is in the drafting of a combined mix of making concrete, and to supporting environmentally friendly concrete, a mixture of natural materials are used as one of the making material of concrete.South Sumatra is one of the islands in Sumatra, which has an abundant plantation of rubber. The large number of rubber plantations makes rubber waste more and more, one of which is rubber seeds. Therefore it is necessary to treat rubber seed waste in order to reduce the amount of rubber seed waste and can be used to improve the economy of the surrounding community.  The rubber itself has many advantages in the industrial field. Utilization of rubber has been widely used, but no one has used rubber seeds as an aggregate substitution material in making a concrete without other chemicals. Therefore this research will discuss the rubber seed mixture as a substitute for coarse aggregate. The material used to make concrete is portland type I cement, coarse and fine aggregate from the Tanjung Raja area, and the rubber seeds used are from the Sembawa area. Coarse aggregate substitution using a mixture of rubber seeds  5%, 10%, 15%, and 20% were tested during the age of concrete of 7 days, 14 days, and 28 days.. The compressive strength of rubber seed substitution with a percentage of 5% shows the most significant compressive strength value of 19.33 Mpa. From the test results of this study it can be concluded that the greater the use of rubber seeds, the lower the compressive strength.
Co-Authors Diba, Annadiyah Farah Fadly, Romy Fadly, Romy Firdausa, Fadhila I Wayan Krisna Eka Putra Iryani, Arista Widya Nubli, Farhan Pratama, M Ade Surya Pratama, Rangga Andika Raja Marpaung Ria, Vicky Wisma Yusri Bermawi