Artificial Polymer Lightweight Aggregate Concrete With Coal Fly Ash for Biomedical Infrastructure: Mechanical, Physical, and Microstructural Investigation DOI Creative Commons
Ani Firda, Rosmalinda Permatasari, Hendrik Jimmyanto

и другие.

Engineering Reports, Год журнала: 2025, Номер 7(6)

Опубликована: Май 29, 2025

ABSTRACT Aggregates constitute ~60%–80% of concrete volume and play a crucial role in determining its mechanical durability properties. In the context sustainable construction, artificial aggregates derived from industrial by‐products are gaining prominence as environmentally responsible alternatives to natural aggregates. This study presents development performance evaluation novel lightweight incorporating polymer aggregate synthesized coal fly ash (CFA), epoxy resin, hardener varying CFA‐to‐resin ratios (70:30, 74:26, 80:20 by weight). The proposed mix design aims address increasing demand for lightweight, durable, materials suitable biomedical infrastructure applications, which require enhanced thermal insulation, fire resistance, seismic performance. Concrete mixtures were designed achieve target compressive strengths 17.5, 20, 30 MPa, with both (BR series) normal weight (BN formulations evaluated. Results demonstrated that incorporation reduced bulk density up 15.36%, while meeting or exceeding required strength thresholds BR_17.5 BR_20 mixtures. Although BR_30 did not meet strength, aggregate‐based exhibited significantly improved flexural (up 60.57% higher than conventional mixes) chemical when exposed acidic saline environments. However, resistance elevated temperatures was lower compared concrete. findings suggest offers promising material solution other applications demanding thermally efficient construction materials. utilization waste production only contributes environmental conservation but also advances next‐generation building aligned circular economy principles.

Язык: Английский

Design and Construction Control of Warm Mix Epoxy Asphalt Mixture with Low Epoxy Content for Service Area Pavements DOI Creative Commons
Bo Chen, Kai Chen, Xuetang Xiong

и другие.

Buildings, Год журнала: 2025, Номер 15(10), С. 1673 - 1673

Опубликована: Май 15, 2025

Highway service area pavements are exposed to severe conditions such as heavy traffic, oil infiltration, and temperature fluctuations, which lead issues like rutting cracking in conventional asphalt mixtures. Although warm mix epoxy mixtures have high strength corrosion resistance, their content stringent construction requirements limit engineering applications. To address these challenges, a design method for with low (≤20%) was proposed. The mineral aggregate gradation optimized using the CAVF volumetric method, impact of different asphalt-aggregate ratios analyzed through various performance tests, including Marshall stability, high-temperature low-temperature bending, resistance tests. available time determined viscosity process parameters were based on infrared thermography real-time compaction monitoring. results show that 5.4% ratio yields best overall performance, significantly better dynamic tensile strain, compared SBS-modified recommended parameters, control process, ensure optimal durability. proposed methods provide essential technical support effective application pavements.

Язык: Английский

Процитировано

0
Artificial Polymer Lightweight Aggregate Concrete With Coal Fly Ash for Biomedical Infrastructure: Mechanical, Physical, and Microstructural Investigation DOI Creative Commons
Ani Firda, Rosmalinda Permatasari, Hendrik Jimmyanto

и другие.

Engineering Reports, Год журнала: 2025, Номер 7(6)

Опубликована: Май 29, 2025

ABSTRACT Aggregates constitute ~60%–80% of concrete volume and play a crucial role in determining its mechanical durability properties. In the context sustainable construction, artificial aggregates derived from industrial by‐products are gaining prominence as environmentally responsible alternatives to natural aggregates. This study presents development performance evaluation novel lightweight incorporating polymer aggregate synthesized coal fly ash (CFA), epoxy resin, hardener varying CFA‐to‐resin ratios (70:30, 74:26, 80:20 by weight). The proposed mix design aims address increasing demand for lightweight, durable, materials suitable biomedical infrastructure applications, which require enhanced thermal insulation, fire resistance, seismic performance. Concrete mixtures were designed achieve target compressive strengths 17.5, 20, 30 MPa, with both (BR series) normal weight (BN formulations evaluated. Results demonstrated that incorporation reduced bulk density up 15.36%, while meeting or exceeding required strength thresholds BR_17.5 BR_20 mixtures. Although BR_30 did not meet strength, aggregate‐based exhibited significantly improved flexural (up 60.57% higher than conventional mixes) chemical when exposed acidic saline environments. However, resistance elevated temperatures was lower compared concrete. findings suggest offers promising material solution other applications demanding thermally efficient construction materials. utilization waste production only contributes environmental conservation but also advances next‐generation building aligned circular economy principles.

Язык: Английский

Процитировано

0