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首页> 美国卫生研究院文献>Materials >Properties of a Steel Slag–Permeable Asphalt Mixture and the Reaction of the Steel Slag–Asphalt Interface
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Properties of a Steel Slag–Permeable Asphalt Mixture and the Reaction of the Steel Slag–Asphalt Interface

机译：钢渣-渗透性沥青混合料的性质及钢渣-沥青界面的反应

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摘要

Steel slag is an industrial solid waste with the largest output in the world. It has the characteristics of wear resistance, good particle shape, large porosity, etc. At the same time, it has good adhesion characteristics with asphalt. If steel slag is used in asphalt pavement, it not only solves the problem of insufficient quality aggregates in asphalt concrete, but can also give full play to the high hardness and high wear resistance of steel slag to improve the performance of asphalt pavement. In this study, a steel slag aggregate was mixed with road petroleum asphalt to prepare a permeable steel slag–asphalt mixture, which was then compared with the permeable limestone–asphalt mixture. According to the Technical Regulations for Permeable Asphalt Pavement (CJJT 190-2012), the permeability, water stability, and Marshall stability of the prepared asphalt mixtures were tested and analyzed. In addition, the high-temperature stability and expansibility were analyzed according to the Experimental Regulations for Highway Engineering Asphalt and Asphalt Mixture (JTG E20-2011). The chemical composition of the steel slag was tested and analyzed by X-ray fluorescence spectrometer (XRF). The mineral composition of the steel slag was tested and analyzed by X-ray diffractometer (XRD). The asphalt was analyzed by Fourier transform infrared spectroscopy (FTIR). The results show that the steel slag asphalt permeable mixture had good permeability, water stability, and Marshall stability, as well as good high-temperature stability and a low expansion rate. The main mineral composition was ferroferric oxide, the RO phase (RO phase is a broad solid solution formed by melting FeO, MgO, and other divalent metal oxides such as MnO), dicalcium silicate, and tricalcium silicate. In the main chemical composition of steel slag, there was no chemical reaction between aluminum oxide, calcium oxide, silicon dioxide, and asphalt, while ferric oxide chemically reacted with asphalt and formed new organosilicon compounds. The main mineral composition of the steel slag (i.e., triiron tetroxide, dicalcium silicate, and tricalcium silicate) reacted chemically with the asphalt and produced new substances. There was no chemical reaction between the RO phase and asphalt.
机译：钢渣是世界上产量最大的工业固体废物。它具有耐磨性，颗粒形状好，孔隙率大等特点。同时，它与沥青的粘结性也很好。如果将钢渣用于沥青路面，不仅解决了沥青混凝土中质量骨料不足的问题，而且可以充分发挥钢渣的高硬度和高耐磨性，从而改善沥青路面的性能。在这项研究中，将钢渣骨料与道路石油沥青混合，制备出可渗透的钢渣-沥青混合物，然后将其与可渗透的石灰石-沥青混合物进行比较。根据渗透性沥青路面技术法规（CJJT 190-2012），对所制备的沥青混合料的渗透性，水稳定性和马歇尔稳定性进行测试和分析。此外，根据《公路工程沥青和沥青混合料试验规程》（JTG E20-2011）对高温稳定性和膨胀性进行了分析。通过X射线荧光光谱仪（XRF）对钢渣的化学成分进行了测试和分析。通过X射线衍射仪（XRD）对钢渣的矿物成分进行了测试和分析。通过傅立叶变换红外光谱法（FTIR）分析沥青。结果表明，钢渣沥青可渗透混合物具有良好的渗透性，水稳定性和马歇尔稳定性，以及良好的高温稳定性和低膨胀率。主要的矿物成分是三氧化二铁，RO相（RO相是通过熔融FeO，MgO和其他二价金属氧化物（如MnO）形成的宽固溶体），硅酸二钙和硅酸三钙。在钢渣的主要化学组成中，氧化铝，氧化钙，二氧化硅和沥青之间没有化学反应，而三氧化二铁与沥青化学反应并形成了新的有机硅化合物。钢渣的主要矿物成分（即四氧化三铁，硅酸二钙和硅酸三钙）与沥青发生化学反应并生成新物质。 RO相和沥青之间没有化学反应。

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