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All Journal Jurnal PkM MIFTEK Jurnal Konstruksi
Marsalina, Sali
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Pengaruh Limbah Abu Ampas Kopi Garut terhadap Kuat Lentur Beton Marsalina, Sali; Walujodjati, Eko
Jurnal Konstruksi Vol 23 No 1 (2025): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.23-1.1805

Abstract

The development of coffee shop businesses in Garut has contributed to the increase in coffee grounds waste, which can pollute the environment. One of the uses of coffee grounds waste is as a substitute for part of the cement in concrete. Coffee grounds ash contains silica which is pozzolanic in concrete. The purpose of this study was to determine the effect of coffee grounds ash as a partial cement substitute on the flexural strength of concrete. The study was conducted using an experimental method using variations of coffee grounds ash of 3%, 6%, and 9% as a partial cement substitute in concrete with a design quality of K-300 (fc’ 25 MPa) and testing at a concrete age of 28 days. Compressive strength testing was carried out on cube test specimens (15 cm x 15 cm x 15 cm) and flexural strength on beams (10 cm x 18 cm x 60 cm), each with 3 samples per variation. The test was guided by SNI 7656:2012. The results showed that increasing the content of coffee grounds ash reduced the strength of concrete. The average compressive strength of normal concrete is 217.72 kg/cm2, decreasing to 198.20 kg/cm2 with a percentage decrease of (8.96%) at a content of 3%, 182.13 kg/cm2 (16.35%) at a content of 6%, and 150.22 kg/cm2 (31.01%) at a content of 9%. This study shows that although coffee grounds ash has the potential as an environmentally friendly material, its use as a partial replacement of cement in concrete with a content of more than 3% actually weakens the mechanical properties of the concrete. Therefore, further research is needed with a lower substitution content or a combination with other additives to improve concrete performance.
Pemberdayaan Masyarakat Dalam Mempersiapkan Desa Wisata Air di Desa Wanasari Rahayu, Sri; Firmansyah, Refi; Irpan, Nurul; Haq, Shidqi Amirul; Mutaqin, Ridwan; Sanusi, Ahmad; Koswara, Reyhan Rizqia; Noerkemalasari, Dylla; Laeli, Sasya Riwani Al; Husna, Rida Sofiatu; Rahmana, Wiguna; Aripin, Adi Muhammad; Ahkop, Irsal Adil; Gunawan, Latif; Marsalina, Sali; Aprilianti, Mega; Mustika, Lesti; Raihandika, Hisyam; Farwati, Aida; Riswandi, Muhamad; Prilangga, Regi
Jurnal PkM MIFTEK Vol 3 No 2 (2022): Jurnal PkM MIFTEK
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/miftek/v.3-2.1311

Abstract

One of the goals of community empowerment is to support regional development through improving the quality of human resources and the wise and responsible use of natural resources towards competitive advantage in local, regional and global competition. Community empowerment is carried out through the Garut Institute of Technology Real Work Lecture program in an effort to increase and foster a sense of student empathy for the conditions of society and its environment, in order to be able to solve problems experienced by the community. With the plan to have a Water Tourism Village in Wanasari Village, Group 3 KKN students participate by carrying out various work programs such as making signposts for directions and naming several location points on Google maps as a way to make it easier to find the location of a Water Tourism Village in the future. Implementation of each work program in preparing for the Water Tourism Village, students always involve the community in order to increase the participation, knowledge and skills of the community. The implementation of the activities of each work program is divided into four method stages. The first stage is location observation and problem identification, the second stage is problem solving formulation, the third stage is implementation of activities in the field, the fourth stage is evaluation and monitoring for corrections and improvements to program sustainability. Activities are carried out after students hold hearings with village officials and community leaders, so that the priority scale of activities is determined based on the conditions and potential that exist in the Wanasari Village community. As many as 41% of the total 3,902 residents of Wanasari Village gave a good response to the Group 3 KKN Student work program.
Co-Authors Ahkop, Irsal Adil Ahmad Sanusi Aprilianti, Mega Aripin, Adi Muhammad Eko Walujodjati Farwati, Aida Firmansyah, Refi Gunawan, Latif Haq, Shidqi Amirul Husna, Rida Sofiatu Irpan, Nurul Koswara, Reyhan Rizqia Laeli, Sasya Riwani Al Mustika, Lesti Mutaqin, Ridwan Noerkemalasari, Dylla Prilangga, Regi Rahmana, Wiguna Raihandika, Hisyam Riswandi, Muhamad SRI RAHAYU