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ANALISIS KUAT TEKAN REACTIVE POWDER CONCRETE DENGAN VARIASI SILICA FUME DAN LIMBAH SERBUK MARMER PADA PERAWATAN STEAM CURING Arumningsih , Dian; Sumina, Sumina; Priyanto, Kusdiman Joko; Putri, Dinda Ajeng Anindita
Journal of Civil Engineering and Infrastructure Technology Vol 4 No 1 (2025): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v4i1.4994

In the current era of globalization, the need for concrete is increasing, triggering challenges to create good quality concrete. High- quality concrete innovation is developed through the improvement of concrete constituent materials and the addition of added materials. In this study, pozzolan material was used, namely silica fume and marble powder as filler. This concrete is Reactive Powder Concrete, where the constituent material of concrete is nanometer in size and removes coarse aggregate. The method used is experimental. The test specimen used is cylindrical concrete measuring 10 cm x 20 cm. This study aims to determine the optimum level of use of silica fume and marble powder with a variation in 0% levels; 5%; 10%; 15%; 20%; 25%; 30%; 35%; 40%; 45%; and 50%. The results of the study showed the optimum content of silica fume 15% of the total cementitious, and the optimum content of marble powder 30% of the total fine aggregate which obtained compressive strength of 12.74 MPa and 12.10 MPa at the age of 7 days. Then 16 pieces of RPC concrete were made with a test life of 7, 14, 21, and 28 days. Test specimens are given two treatment methods, namely steam curing and immersion. Of the two treatments applied, steam curing produces high initial compressive strength, with a maximum compressive strength of 66.24 MPa at 7 days old. While immersion treatment can produce high final compressive strength in RPC concrete which produces the highest compressive strength of 103.82 MPa at 28 days old.

ANALISIS DEBIT BANJIR RENCANA BENDUNG TRITIS KABUPATEN SRAGEN Sari, Lidya Ayu Setya Kumala; Wijayanti, Paska; Priyanto, Kusdiman Joko
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.v30i2.5131

Water availability is an aspect that should be given high priority by the government to meet community needs, both in urban and rural areas. Generally, the current water sources come from rivers, canals, or shallow groundwater wells. The water availability in irrigated land obtained from weirs is crucial for the agricultural sector. Dams have a role to hold water and distribute it through irrigation channels to agricultural land, in order to ensure consistent water availability, especially in the dry season. Tritis Dam functions to raise the elevation of the river water level so that it can be used to irrigate into irrigation channels. Tritis weir is a permanent dam with a stone masonry structure located in Sambirejo Village, Sambirejo District, Sragen Regency, which is located in the Tritis Watershed with an area of ??31.15 km2. The purpose of this study is to determine planned flood discharge value. The method used in this study is the Synthetic Unit Hydrograph (HSS) ITB-I, but previously it must process GPM (Global Precipitation Measurement) satellite rainfall data and calculate the planned rainfall using the Log Pearson III frequency distribution method. The planned flood discharge in the Tritis Watershed, Sragen Regency using the HSS ITB I method was obtained at 258.41 m3/second for a 50-year return period and 318.09 m3/second for a 100-year return period.

ANALISIS DEBIT BANJIR RENCANA BENDUNG TRITIS KABUPATEN SRAGEN Sari, Lidya Ayu Setya Kumala; Wijayanti, Paska; Priyanto, Kusdiman Joko
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.v30i2.5131

Water availability is an aspect that should be given high priority by the government to meet community needs, both in urban and rural areas. Generally, the current water sources come from rivers, canals, or shallow groundwater wells. The water availability in irrigated land obtained from weirs is crucial for the agricultural sector. Dams have a role to hold water and distribute it through irrigation channels to agricultural land, in order to ensure consistent water availability, especially in the dry season. Tritis Dam functions to raise the elevation of the river water level so that it can be used to irrigate into irrigation channels. Tritis weir is a permanent dam with a stone masonry structure located in Sambirejo Village, Sambirejo District, Sragen Regency, which is located in the Tritis Watershed with an area of ??31.15 km2. The purpose of this study is to determine planned flood discharge value. The method used in this study is the Synthetic Unit Hydrograph (HSS) ITB-I, but previously it must process GPM (Global Precipitation Measurement) satellite rainfall data and calculate the planned rainfall using the Log Pearson III frequency distribution method. The planned flood discharge in the Tritis Watershed, Sragen Regency using the HSS ITB I method was obtained at 258.41 m3/second for a 50-year return period and 318.09 m3/second for a 100-year return period.

TINGKAT KEPATUHAN TENAGA KERJA KONSTRUKSI DALAM IMPLEMENTASI PELAKSANAAN K3 PADA PROYEK KONSTRUKSI DI KOTA SURAKARTA Susila, Herman; Joko Priyanto, Kusdiman; Agtya Putra, Yusuf; Setyo Hidayat, Wisnu
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (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.v31i1.5780

Surakarta (Solo), as one of the major cities in Central Java, is experiencing rapid development in the construction sector, both for commercial, residential, and infrastructure projects. The implementation of SMKK (Vocational Occupational Safety and Health) in construction projects in Surakarta is certainly a very important aspect to create a safe, healthy work environment, and avoid potential work accidents. Occupational Safety and Health (K3) is an important aspect in construction projects to prevent work accidents and increase worker productivity. However, the level of compliance with K3 in the field remains a significant challenge. This study aims to analyze the level of worker compliance with K3 in construction projects and the factors that influence it. The research method uses a quantitative approach by distributing questionnaires to construction workers and field observations. Testing in this study uses descriptive statistical methods. This study shows that worker compliance with K3 in Surakarta City is in the good category with an average of 3.078. The Top Management Commitment to K3 variable has the highest compliance level (3.13), while the K3 Regulations and Procedures variable has the lowest compliance value (3.01). For other variables are the Use of PPE (3.113), Worker Communication (3.093), Work Environment (3.09), Worker Competence (3.027). From these results, to increase the level of compliance of construction workers in implementing K3, further efforts are needed in the form of increased education and stricter supervision.

TINGKAT KEPATUHAN TENAGA KERJA KONSTRUKSI DALAM IMPLEMENTASI PELAKSANAAN K3 PADA PROYEK KONSTRUKSI DI KOTA SURAKARTA Susila, Herman; Joko Priyanto, Kusdiman; Agtya Putra, Yusuf; Setyo Hidayat, Wisnu
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (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.v31i1.5780

Surakarta (Solo), as one of the major cities in Central Java, is experiencing rapid development in the construction sector, both for commercial, residential, and infrastructure projects. The implementation of SMKK (Vocational Occupational Safety and Health) in construction projects in Surakarta is certainly a very important aspect to create a safe, healthy work environment, and avoid potential work accidents. Occupational Safety and Health (K3) is an important aspect in construction projects to prevent work accidents and increase worker productivity. However, the level of compliance with K3 in the field remains a significant challenge. This study aims to analyze the level of worker compliance with K3 in construction projects and the factors that influence it. The research method uses a quantitative approach by distributing questionnaires to construction workers and field observations. Testing in this study uses descriptive statistical methods. This study shows that worker compliance with K3 in Surakarta City is in the good category with an average of 3.078. The Top Management Commitment to K3 variable has the highest compliance level (3.13), while the K3 Regulations and Procedures variable has the lowest compliance value (3.01). For other variables are the Use of PPE (3.113), Worker Communication (3.093), Work Environment (3.09), Worker Competence (3.027). From these results, to increase the level of compliance of construction workers in implementing K3, further efforts are needed in the form of increased education and stricter supervision.

ANALISIS SIFAT FISIS DAN MEKANIK PADA BETON DENGAN BAHAN TAMBAH ADMIXTURE FOSROC SP310 Aryanto, Dimas Agus; Priyanto, Kusdiman Joko; Sungkono, Kukuh Kurniawan Dwi
Journal of Civil Engineering and Infrastructure Technology Vol 4 No 2 (2025): JCEIT
Publisher : Civil Engineering, Faculty of Engineering, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jceit.v4i2.5866

Concrete is a primary construction material widely used across the world. It is a composite material composed of sand, gravel (coarse aggregate), Portland cement, and water. To improve its quality and accelerate the hardening process, additives are often incorporated. One such additive is Fosroc SP310, a type of superplasticizer. This admixture enhances concrete performance and reduces the risk of structural damage due to corrosion. This study investigates the effect of various dosages of Fosroc SP310—0.5%, 1%, 1.2%, and 1.5% by weight of cement. A total of 60 cylindrical specimens measuring 10 cm × 20 cm were prepared for compressive strength testing at curing ages of 3, 7, 14, and 28 days. The results show that normal concrete exhibited a compressive strength ranging from 24.60 MPa (14 days) to 48.44 MPa (3 days). With 0.5% admixture, strength ranged from 25.46 MPa (7 days) to 47.05 MPa (3 days). At 1%, values ranged from 23.15 MPa to 48.44 MPa. The 1.2% dosage yielded the highest strength: 54.26 MPa (14 days) and 41.80 MPa (28 days), compared to 29.71 MPa for normal concrete at 28 days. It can be concluded that the 1.2% dosage is most effective in enhancing compressive strength

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