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All Journal BANGUN REKAPRIMA Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian KOLABORATIF
Etika Herdiarti
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH., Tembalang Semarang 50275
Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Environmental Science Social Sciences Other

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Journal : BANGUN REKAPRIMA

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ANALISIS KUAT TEKAN GREEN CONCRETE FC 20 MPa MENGGUNAKAN BIJI PLASTIK PETE (POLYETHYLENE TEREPHTHALATE) Widyarini, Galih; Herdiarti, Etika; Azizah, Nur; Mukti, Galang Wicaksono
Bangun Rekaprima Vol. 10 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v10i1.5465

Abstract

Concrete is a building material consisting of a mixture of coarse aggregate, fine aggregate, cement, water and other additional materials (Firdaus, 2019). Concrete materials come from nature (gravel, sand and aggregate) which will eventually run out because they cannot be renewed. Therefore, the use of concrete materials needs to be innovated to become green concrete or environmentally friendly concrete. Environmentally friendly concrete is made using waste or comes from industrial waste materials. One of them is replacing aggregate with materials that do not damage the environment, such as Polyethylene Terephthalate (PETE) plastic pellets. PETE plastic pellets are a type of plastic material that has wrinkle-free fibers. This material is often used for packaging food and drinks such as bottles of soft drinks, mineral water and so on. The aim of this research is to determine the influence and trend of compressive strength of fc'20 MPa concrete on replacing some of the coarse aggregate with PETE (Polyethylene Terephthalate) plastic pellets varying 10%, 20% and 30%. The research method used was to make cylindrical test objects of each variation and then test them at the age of 7 days, 14 days and 28 days. The compressive strength test results for concrete variations of 10% PETE at 7 days, 14 days and 28 days were 21.84 MPa; 22.78 MPa and 24.35 MPa. In the concrete test variation of 20% PETE aged 7 days, 14 days and 28 days was 21.03 MPa; 22.09 MPa and 23.21 MPa. The compressive strength test for concrete variations of 30% PETE aged 7 days, 14 days and 28 days was 20.22 MPa; 20.71 MPa; and 20.95 MPa. These results show that the test object produces concrete compressive strength exceeding FC 20 MPa with an increasing trend from 7 days - 28 days.
KESESUAIAN PENDIDIKAN TERHADAP PROSES SERTIFIKASI KOMPETENSI KERJA (SKK) JENJANG 4-5 DI KOTA SEMARANG Sutik, Sutik; Widyarini, Galih; Herdiarti, Etika
Bangun Rekaprima Vol. 10 No. 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v10i2.5985

Abstract

Human resources (man) as the main construction resource must be professional, competent and certified. Certificates for construction workers are clearly stated in Government Regulation Number 14 of 2021 concerning construction services. The Government Regulation requires workers in the construction sector to have a work competency certificate and construction service actors to employ construction workers who have a work competency certificate. Construction service actors are expected to have a work competency certificate (SKK) in accordance with job qualifications and education levels.   The phenomenon is that some SKK ownership is not in accordance with the level requirements stipulated in the Perpres No. 8/2012 regulation. The purpose of this study is to determine the suitability of education for the 4-5 level work competency certification process in Semarang City. The research method used is qualitative with data collection of test results from TUK. The data analysis method used is coding analysis. The results of competency tests at levels 4-5 show that more than 50% of competency test participants have the latest education that is not in accordance with the requirements of Perpres No. 8/2012.
Co-Authors Galih Widyarini Lestari, Fitria Maya Maya Lestari, Fitria Mukti, Galang Wicaksono Nur Azizah Risdiana Cholifatul Afifah, Risdiana Sasmito S, Nuryanto Sutik sutik, sutik