Quantitative study of triboemission kinetics from polymer fiber-reinforced mortar paving blocks: Unravelling the dynamics of nanoparticle aerosol release

IF 10.9 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement and Concrete Research Pub Date : 2024-08-27 DOI:10.1016/j.cemconres.2024.107650

F. Husanu , Á. Alonso , V. Calderón , M. Castellote , R. Nevshupa

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Abstract

Triboemission of nanoparticle aerosols from construction materials is a growing concern due to its potential impact on air quality and human health. In this study, we investigated the effect of aggregation of polyurethane fibers (PUFs) proceeding from waste on the kinetics of triboemission in cement mortars. A quantitative methodology was employed to assess the deposition rate, particle size distribution, and emissivity for the aerosols within the particle aerodynamic diameter range of 10–400 nm. The triboemission properties were correlated with the pore structure, morphology and tribochemical transformations of the particles and worn surfaces. Our results highlight the intricate influence of PUF aggregation on the kinetics of triboemission in cement mortars through both direct and indirect mechanisms and provide valuable insights into the mechanisms governing triboemission in construction materials.

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聚合物纤维加固砂浆铺路块的三重释放动力学定量研究：揭示纳米粒子气溶胶释放的动态过程

由于对空气质量和人类健康的潜在影响，建筑材料中纳米颗粒气溶胶的三重排放日益受到关注。在这项研究中，我们调查了从废弃物中提取的聚氨酯纤维（PUFs）的聚集对水泥砂浆中三溴排放动力学的影响。我们采用了一种定量方法来评估气溶胶的沉积率、粒径分布和发射率，气溶胶的颗粒空气动力学直径范围为 10-400 nm。三发射特性与颗粒和磨损表面的孔隙结构、形态和摩擦化学变化相关联。我们的研究结果凸显了 PUF 聚集通过直接和间接机制对水泥砂浆中三波发射动力学的复杂影响，并为研究建筑材料中三波发射的机制提供了宝贵的见解。

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来源期刊

Cement and Concrete Research 工程技术-材料科学：综合

CiteScore

20.90

自引率

12.30%

发文量

318

审稿时长

53 days

期刊介绍： Cement and Concrete Research is dedicated to publishing top-notch research on the materials science and engineering of cement, cement composites, mortars, concrete, and related materials incorporating cement or other mineral binders. The journal prioritizes reporting significant findings in research on the properties and performance of cementitious materials. It also covers novel experimental techniques, the latest analytical and modeling methods, examination and diagnosis of actual cement and concrete structures, and the exploration of potential improvements in materials.