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Zhixin Wang¹, Shaoping Wang², Wei Li¹

¹College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.

Materials (Basel, Switzerland)

|June 13, 2025

概括

对于耐用混凝土而言,精确量化聚合物中的硫化铁,如酸盐和酸盐,至关重要. 本研究引入了一种具有成本效益的现场方法,用于精确测量这些硫化物,从而使含硫聚合物的使用更安全.

科学领域:

材料科学材料科学材料科学
地质化学地质化学
土木工程土木工程是指土木工程.

背景情况:

混凝土聚合物的硫化铁可以氧化,形成硫酸盐,导致酸腐蚀和内部硫酸盐攻击 (ISA).
现有的聚合物中硫化铁的量化方法是不准确的,并且经常忽略了 pyrrhotite.
缺乏标准化的方法和指导方针限制了使用含硫化物聚合物的使用.

研究的目的:

开发和验证一个现场的,成本效益高的量化程序,用于聚合物中的酸盐和酸盐.
优化选择性化学溶解条件,以准确测量硫化物.
为了促进含硫聚合物的实际应用在混凝土生产中.

主要方法:

设计了一个直角实验,以优化溶解条件 (颗粒大小,温度,酸度,时间).
采用选择性化学溶解过程来量化矿和矿.
使用XRD内部标准方法对pyrite验证了定量结果.

主要成果:

开发的方法实现了高精度的pyrrhotite (RSD 3.60%,误差3.19%) 和pyrite (RSD 3.11%,误差4.70%).
当通过XRD进行验证时,pyrite量化误差小于0.6%.
该程序被优化为现场应用,降低成本和复杂性.

结论:

拟议的现场量化程序可以准确地确定聚合物中的化和化含量.
这种方法可以有效地监测和管理硫化物含量,提高混凝土的耐用性.
这项研究促进了建筑中含硫聚合物的更广泛和更安全的使用.

关键词:

总的来说,它们是聚合的.皮里特酸盐是一种酸盐.定量分析量化分析选择性溶解是一种选择性溶解.

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