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Pemanfaatan Limbah Gelas Plastik Sebagai Bahan Dasar Pembuatan Paving Block Di Desa Mootilango

PRODUKTIVITAS SERASAH MANGROVE DI DESA POPALO GORONTALO UTARA

Pembangunan Tempat Sampah Sementara Di Desa Bolihutuo Kecamatan Botumioto Kabupaten Boalemo

Sustainable Self-Compacting Concrete: The Role of Limestone Powder as A Cement Replacement

The excessive use of cement in concrete production contributes significantly to environmental impacts, particularly CO? emissions. One potential solution is the partial replacement of cement with limestone powder in self-compacting concrete (SCC). This study aimed to investigate the effect of limestone powder as a partial cement replacement on the fresh properties and compressive strength of SCC. Limestone powder was used at replacement levels of 0%, 6%, 9%, 12%, and 15% by weight of cement. The fresh properties of SCC were evaluated using slump flow, V-funnel, and L-box tests, while compressive strength tests were conducted to assess hardened performance. The results showed that SCC mixtures containing up to 9% limestone powder satisfied the SCC workability requirements. The optimum performance was achieved at 6% limestone powder replacement, which produced a slump flow diameter of 600 mm and compressive strength of 29.58 MPa, exceeding the design strength target of 25 MPa. Higher replacement levels reduced both workability and compressive strength, with the 15% mixture failing to meet acceptable performance criteria. These findings indicate that limestone powder can be effectively utilized as a sustainable partial cement replacement in SCC at moderate replacement levels while maintaining satisfactory fresh and hardened properties.

Pemberdayaan Masyarakat melalui Pelatihan Produksi Arang Tempurung Kelapa sebagai Strategi Pengembangan UMKM di Desa Bube Baru

FACTORS AFFECTING WASTE MANAGEMENT IN NORTH BUNTULIA VILLAGE, POHUWATO DISTRICT

The fact remains that waste management is still not given proper attention and is inadequately handled by various parties, despite being a shared responsibility. Improper waste management can lead to numerous environmental issues such as flooding, global warming, and the outbreak of various diseases. This article aims to identify and describe the factors influencing waste management in North Buntulia Village, Pohuwato District. The research method employed is qualitative, utilizing an interactive model analysis for data analysis. This model consists of three components: 1) Data reduction, 2) Data presentation, and 3) Data verification and conclusion drawing. The findings indicate that the factors influencing waste management include: 1) the size of the organization, 2) management style, 3) the complexity of the business environment, 4) the production process, and 5) the characteristics of the problems faced and the objectives of planning. This study recommends that the Regional Government of Pohuwato Regency.