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Sosialisasi Pentingnya Uji Laboratorium Material Bangunan Pra Pembangunan di Desa Cabean, Kecamatan Sawahan, Kabupaten Madiun Rochidajah, Rochidajah; Wibowo, Rendi Gusta
JURNAL DAYA-MAS Vol 4, No 2 (2019): JURNAL DAYA MAS
Publisher : Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/dymas.v4i2.29

Indonesia is a country that is carrying out development with a large population. The construction of citizen housing has occurred in many regions. But many homes were damaged. One reason is the use of building materials. Each construction must be subjected to material testing first. One material that is usually tested is concrete. Concrete testing can be done including the Specific Gravity Test and Absorption of Coarse Aggregate Water, as well as the Content Weight Test, Mixed Production Volume, and Concrete Air Content. In this service activity, socialization will be carried out to the public about the importance of testing building materials before carrying out construction. Because some people still have not tested material before carrying out construction. The activities carried out included socialization, training, and mentoring. After the activity is complete, an understanding evaluation of the material is carried out. From the results of the evaluation, it was found that the percentage of understanding was 53%, for the people who understood enough by 31%, and those who did not understand at 16%.

Sosialisasi Pentingnya Uji Laboratorium Material Bangunan Pra Pembangunan di Desa Cabean, Kecamatan Sawahan, Kabupaten Madiun Rochidajah Rochidajah; Rendi Gusta Wibowo
JURNAL DAYA-MAS Vol. 4 No. 2 (2019): JURNAL DAYA MAS
Publisher : Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/dymas.v4i2.29

Indonesia is a country that is carrying out development with a large population. The construction of citizen housing has occurred in many regions. But many homes were damaged. One reason is the use of building materials. Each construction must be subjected to material testing first. One material that is usually tested is concrete. Concrete testing can be done including the Specific Gravity Test and Absorption of Coarse Aggregate Water, as well as the Content Weight Test, Mixed Production Volume, and Concrete Air Content. In this service activity, socialization will be carried out to the public about the importance of testing building materials before carrying out construction. Because some people still have not tested material before carrying out construction. The activities carried out included socialization, training, and mentoring. After the activity is complete, an understanding evaluation of the material is carried out. From the results of the evaluation, it was found that the percentage of understanding was 53%, for the people who understood enough by 31%, and those who did not understand at 16%.

Pertimbangan Biaya dalam Pemilihan Bekisting Mohammad Arif Bahtiar Efendi; Rendi Gusta Wibowo
JURNAL PILAR TEKNOLOGI Jurnal Ilmiah Ilmu Ilmu Teknik Vol. 6 No. 2 (2021): JURNAL PILAR TEKNOLOGI
Publisher : LPPM Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/piltek.v6i2.101

Materials in the construction world is progressing quite rapidly. Likewise formwork as a project is also experiencing quite rapid progress which refers to the value of the results of a project. In a project the determination of the type of system and formwork method will affect the cost and time in progress, the selection of the formwork method which is not appropriate will have a loss in the future. The analysis conducted is comparing formwork of semi-conventional methods and system (PERI) in column, beam and plate formworks of the INKA Graha Building Construction Project, Madiun. The objective to be achieved in this paper is to find out the type of formwork that is efficient to be used in a formwork work both for beam and plate columns, in terms of cost comparisons and finding a draw point between the two methods. After analyzing it is known that the use of semi-conventional initiating systems is more efficient with a value of Rp. 2,349,756,391, - and for the PERI system costs Rp. 3,050,649,782, - .. The draw point of this system is in the volume of 31,500 m2 which means that in this volume the use of semi-conventional systems and PERI systems does not differ in terms of cost.

Evaluasi Kekuatan Struktur Atas Pada Gedung Gas Negara Fakultas Teknik Unmer Madiun Akibat Kemiringan Bangunan Wildan Muzakky; Seno Aji; Rendi Gusta Wibowo
JURNAL PILAR TEKNOLOGI Jurnal Ilmiah Ilmu Ilmu Teknik Vol. 6 No. 2 (2021): JURNAL PILAR TEKNOLOGI
Publisher : LPPM Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/piltek.v6i2.109

In a building, the beams and roof frame rest on the upright standing columns of each column is a very important technical factor before the blocks and roof frame are installed. Although a column does not stand vertically, it is a serious problem that will occur in terms of construction, it should be avoided. If the angle value of deviation in the column is outside tolerance, causing difficulties in the installation of construction. The peak of the column that has shifted from its position resulted in a tilted roof frame. This measurement uses an upfront cutting method. While on the upfront cropping method use the center of the column as the target point. Thus this research has proven that the method of cutting the surface is not only more flexible, but also more useful to control the firmness of the column on building construction work. Evaluation of the strength of the upper structure of the building at the time of tilting that can be seen from the repetition of.

Pengaruh Umur Beton Terhadap Kuat Tekan Beton Normal dan HVFA-SCC RENDI GUSTA WIBOWO
JURNAL PILAR TEKNOLOGI Jurnal Ilmiah Ilmu Ilmu Teknik Vol. 7 No. 1 (2022): JURNAL PILAR TEKNOLOGI
Publisher : LPPM Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/piltek.v7i1.119

In this era, infrastructure development in Indonesia continues. This continues to be pursued to facilitate community activities in various fields. Some of the infrastructure that continues to be built include toll roads and buildings. One of the most important materials for building infrastructure is concrete. Concrete also has various types, including normal concrete and HVFA-SCC. In this study, the two types of concrete will be compared and tested for compressive strength against the age of the concrete. The test were be done at 7 days, 14 days, 21 days, 28 days, and 90 days. The research step starts from preparing materials, conducting material testing, making job mix formulas, making test objects, testing compressive strength, and getting results. The obtained results shown that the fresh concrete of HVFA-SCC has met the self-compacting concrete according to the Slump flow test, L-Box test, and the V-Funnel test. Based on the compressive strength test, the results show that the age of the concrete has an influence on the compressive strength.

Pengaruh Fly Ash dan Abu Vulkanik Sebagai Penambah Semen Terhadap Kuat Tekan Paving Berpori Afrianto, Arif; Wibowo, Rendi Gusta; Cahyono, Ari
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 1 (2024): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i1.43381

Porous paving is a type of paving that allows water from rainfall or other sources to seep through the paving, which can reduce runoff from a location and increase groundwater recharge. In this study, porous paving uses coarse aggregates measuring 5-10 mm, a water-cement factor of 0.4% and the addition of coal fly ash and volcanic ash. Testing includes density, water absorption, and compressive strength of porous paving with a mixture composition of coal fly ash and volcanic ash of 0%, 2.5%, 5%, 7.5% and 10% tested at 28 days with 30 test objects. For the ratio of cement and coarse aggregate 1:4. The best compressive strength results were obtained by adding fly ash and volcanic ash 2.5%, namely 182,500 kg/cm2, 0% = 182,000 kg/cm2, 5% = 181,667 kg/cm2, 7.5% = 181,167 kg/cm2, and 10% = 180,667 kg/cm2. The smallest porosity Addition of fly ash and volcanic ash 2.5% = 1.47%, addition of 0% = 1.55%, 5% = 1.94%, 7.5% = 2.33% and 10% = 2.35%. The highest density when adding fly ash and volcanic ash is 2.5% = 1.04 gr/cm3, 5% = 1.03 gr/cm3, 7.5% = 1.03 gr/cm3, 0% = 1.03 gr/cm3 and 10% = 1.02 gr/cm3.

ANALISIS KERAPUHAN STRUKTUR GEDUNG GSL UNMER MADIUN DENGAN PUSHOVER ANALYSIS Rohman, Rosyid Kholilur; Afrianto, Arif; Wibowo, Rendi Gusta
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5263

This study examines the fragility curve of the GSL building of Merdeka University of Madiun which was built around 1995 with reference to the SNI 1726:1989 standard. This building is an educational building with a structure using reinforced concrete. Modeling and structural analysis using ETABS software. Loading refers to SNI 1727 2020 and SNI 1726 2019. The analysis was carried out using the pushover analysis method referring to ATC-40. The fragility curve developed describes the probability of damage at various levels of Spectral Displacement (Sd). From this study, the base shear due to earthquake force was 4214 kN. The maximum value of base shear was 7890 kN and the maximum displacement of 0.359 m. Based on the conversion results obtained Sd at performance point 0.082 m, the probability for slight damage limits is 95%, moderate 78%, extensive 70%, and complete 45%. This research provides a basis for structural retrofit planning to increase the structural capacity of buildings due to earthquake load

ANALISIS KERAPUHAN STRUKTUR GEDUNG GSL UNMER MADIUN DENGAN PUSHOVER ANALYSIS Rohman, Rosyid Kholilur; Afrianto, Arif; Wibowo, Rendi Gusta
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5263

This study examines the fragility curve of the GSL building of Merdeka University of Madiun which was built around 1995 with reference to the SNI 1726:1989 standard. This building is an educational building with a structure using reinforced concrete. Modeling and structural analysis using ETABS software. Loading refers to SNI 1727 2020 and SNI 1726 2019. The analysis was carried out using the pushover analysis method referring to ATC-40. The fragility curve developed describes the probability of damage at various levels of Spectral Displacement (Sd). From this study, the base shear due to earthquake force was 4214 kN. The maximum value of base shear was 7890 kN and the maximum displacement of 0.359 m. Based on the conversion results obtained Sd at performance point 0.082 m, the probability for slight damage limits is 95%, moderate 78%, extensive 70%, and complete 45%. This research provides a basis for structural retrofit planning to increase the structural capacity of buildings due to earthquake load

PENGARUH PENAMBAHAN SERAT POLYPROPYLENE TERHADAP KUAT TEKAN BETON DENGAN AGREGAT KASAR BETON BEKAS Wibowo, Rendi Gusta; Rohman, Rosyid Kholilur; Suweno, Hery
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 2 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i2.6043

Concrete is the most widely used construction material, but the continued use of natural aggregates has led to increased exploitation of natural resources. The use of recycled concrete aggregate (RCA) is an alternative to support the concept of sustainable construction. On the other hand, the addition of polypropylene fiber (PPF) is known to improve crack resistance and mechanical properties of concrete. This study aims to determine the effect of variations in polypropylene fiber (PPF) on the compressive strength of concrete with recycled concrete coarse aggregate. The proportion of recycled concrete aggregate is 50% of natural aggregate. The fiber variations used are 0%, 0.25%, 0.5%, 0.75%, and 1% of the concrete volume. Cylindrical test specimens were tested according to SNI standards. The results showed that the addition of fiber reduced the slump value, from 96 mm (0%) to 78 mm (1%). Compressive strength increased with increasing proportion of polypropylene fiber. The optimum content was at 0.5% polypropylene fiber, which provided the most effective strength increase. The use of RCA as a coarse aggregate remains feasible, and the addition of polypropylene fiber has been shown to increase the compressive strength of concrete so that it can be used in structural work.

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