Scholarlink

<p>This study investigates the physical and mechanical features&#xa0;of cement composites&#xa0;that contain nano-ZnO (NZ) particles. It focuses on how these particles affect the microstructure, react to water, and how long it takes to set. Cement pastes were formulated with different concentrations of NZ at 0.0, 1.0, 1.5, 2.0, 2.5, and 3.0 wt% to investigate hydration over 1 to 1440&#xa0;min. Findings demonstrate that adding NZ markedly affects early hydration, with increased concentrations prolonging setting times. The 2.0 wt% NZ sample had a dense microstructure and better pore size distribution. The NZ particles worked well as nano-fillers to reduce harmful pores and improve the structure of the pores. The X-ray diffraction (XRD) study revealed a link between rapid peak development and hydrated products, underscoring NZ’s ability to enhance the physical properties of cement. The ordinary Portland cement (OPC) paste containing 3.0 wt% NZ demonstrated enhanced resistance and stability across the samples. The altered cement pastes with NZ exhibited extended start and final setting durations relative to the control. Response surface methodology (RSM) further examined the impact of NZ content on average pore diameter, spread, and setting time, underscoring optimization studies as an essential instrument for improving cement systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced cement properties through nano-ZnO: a comprehensive analysis using ANOVA and DOE techniques

  • 期刊论文

  • 发表日期：

    2025年10月10日

查看全文
  • Ahmed Hamed El-Sayed Salama,
  • Ghalia A. Gaber,
  • Abbas Metawea,
  • Majdi Bisharah

摘要

This study investigates the physical and mechanical features of cement composites that contain nano-ZnO (NZ) particles. It focuses on how these particles affect the microstructure, react to water, and how long it takes to set. Cement pastes were formulated with different concentrations of NZ at 0.0, 1.0, 1.5, 2.0, 2.5, and 3.0 wt% to investigate hydration over 1 to 1440 min. Findings demonstrate that adding NZ markedly affects early hydration, with increased concentrations prolonging setting times. The 2.0 wt% NZ sample had a dense microstructure and better pore size distribution. The NZ particles worked well as nano-fillers to reduce harmful pores and improve the structure of the pores. The X-ray diffraction (XRD) study revealed a link between rapid peak development and hydrated products, underscoring NZ’s ability to enhance the physical properties of cement. The ordinary Portland cement (OPC) paste containing 3.0 wt% NZ demonstrated enhanced resistance and stability across the samples. The altered cement pastes with NZ exhibited extended start and final setting durations relative to the control. Response surface methodology (RSM) further examined the impact of NZ content on average pore diameter, spread, and setting time, underscoring optimization studies as an essential instrument for improving cement systems.