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All Journal Proceeding of World Conference Insight: Jurnal Ilmiah Psikologi
Aditya Hendric Nur Prasetyo
Department Of Civil Engineering, Faculty Of Engineering Mercu Buana University, Indonesia
Economics, Econometrics & Finance Education Engineering Mathematics Medicine & Pharmacology Social Sciences

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Experimental Study Of Ready Mix Wastewater Utilization For New Concrete Mixtures Agung Sumarno; Aditya Hendric Nur Prasetyo
Journal of World Conference (JWC) Vol. 3 No. 4 (2021): July 2021
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

The use of waste water that is still in accordance with the standards of SNI 06-6989 and APHA 3120B can be reused as a concrete mixture material in the concrete production process at the Batching Plant, especially for low- quality concrete. The purpose of this study was to determine the effect of the use of wastewater with variations of 0%, 25%, 50%, 75% and 100% on the quality or quality of concrete. Based on the results of the study, it was found that at the beginning of the concrete pavement period, the chemical content contained in wastewater from the concrete production process will interfere with the hydration process so that the compressive strength of concrete at the age of 7 days tends to decrease. However, after the age of 28 days, the dissolved solids in the wastewater from the concrete production process fill the pores in the concrete so that the compressive strength of the resulting concrete becomes higher. The value of the use of wastewater to the optimal composition of the concrete mix design is 75% of the total volume of water required. This is based on the results of the compressive strength test which reached 93.37% of normal concrete at the age of 7 days, 100.59% of normal concrete at the age of 14 days and 105.94% at the age of 28 days with the slump and flow table test results of 16cm and 38cm.
LATIHAN KONTROL DIRI UNTUK PENURUNAN PERILAKU MEROKOK PADA PEROKOK RINGAN Irene Hendrika Ramopoly; Kamsih Astuti; Siti Noor Fatmah
Insight: Jurnal Ilmiah Psikologi Vol 17, No 2: Agustus 2015
Publisher : Universitas Mercu Buana Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (70.354 KB) | DOI: 10.26486/psikologi.v17i2.689

Abstract

Tujuan penelitian ini adalah untuk mengetahui efektivitas latihan kontrol diriuntukpenurunan perilaku merokok pada perokokringan. Desain eksperimen yang digunakan dalam penelitian ini adalah ABA, yaitu A (baseline awal sebelum perlakuan), B (fase intervensi), A (baseline akhir setelah perlakuan ditarik). Subjek dalam penelitian ini adalah 3 orang laki-laki, berusia 20-25 tahun, berdomisili di kota Yogyakarta, dan tergolong perokok ringan.Pemilihan responden dilakukan dengan menggunakan metode screening subjek. Teknik pengumpulan data yang digunakan adalah observasi dan wawancara sebagai pendukungnya. Metode analisis data yang digunakan dalam penelitian ini adalah uji hipotesis Paired Sample T-Test. Dari hasil analisis data dengan Paired Sample T-Test diperoleh nilai t = 13.035; p 0,01, sehingga dapat ditarik kesimpulan bahwa terdapat perbedaan signifikan pada perilaku merokok subjek sebelum dan sesudah diberikan latihan kontrol diri, yang artinya perilaku merokok subjek mengalami penurunan sesudah diberikan latihan kontrol diri.
Co-Authors Agung Sumarno Kamsih Astuti Siti Noor Fatmah