Concrete and Cement
Raw Materials
Verification of Raw Materials in Cement Production by FT-IR
常见的马特里als used to manufacture cement include limestone, shells, and chalk or marl combined with shale, clay, slate, blast furnace slag, silica sand, and iron ore.
The identity and quality of the ingredients used must be clearly established in order to deliver the optimal product. Since so many different raw materials are used, a truly universal analysis technique is required.
FT-IR光谱法分析固体和液体，无论是有机的还是无机的。它易于使用，通常是无损的。特别是如果添加了有机添加剂或用于生产功能性建筑材料，FT-IR是理想的工具。必威手机客户端
Sealants
Evaluating Surface Functionalization and Coatings of Concrete via FT-IR
The surface of concrete can be exposed to many harmful influences. These include environmental stress, moisture, but also graffiti. When surface refinements are applied to concrete, they must be verified and evaluated.
FT-IR spectroscopy用于新型混凝土涂层的开发和质量控制，以测试其功能并优化涂料过程。
The analytical method is based purely on the反射的红外线. Therefore, the sample does not have to be prepared or damaged to examine the coating on the concrete. On top of that compact spectrometers can be used on site, even by untrained personnel. Interested?
元素分布和浓度
混凝土的风化
混凝土在适当的条件下可以持续数千年。如今，我们经常发现破裂和风化混凝土的图像。由于混凝土是许多复杂化合物的混合物，其耐用性取决于环境条件。例如，盐水会导致化学反应，从而改变体积并导致混凝土结构中的压力和应变。氯（CL）是了解现代混凝土表面老化和恶化的最重要因素之一，因为CL的增加导致基质的扩展，形成裂纹并导致任何构造随着时间的推移而失去稳定性。因此，希望在矩阵中检测到少量CL。
Micro-XRF已发展为一种强大的技术，可以使用钻头芯表面的元素映射来分析混凝土M4 TORNADO PLUSmicro-XRF spectrometer. It allows fast measurment of large areas, with high resolution in short times and provides compositional information as well as phase analysis for quick estimation of cement to aggregate ratio.阅读更多
Understanding Cement Microstructure
Often the concentration on cement and concrete analysis is surface related, but what happens inside is just as important. Distribution of aggregate, internal fractures and adherence to underlying substrate all are key to ensuring that the installation meets requirements. X-ray Microscopy allows the visualization of cement and concrete slugs for the aforementioned defects.
化学分类
化学分类on Smallest Scales
波特兰水泥是建筑行业的基本材料之一。必威手机客户端波特兰水泥的主要成分是熟料。根据水泥命名法，熟料包含两个硅酸盐阶段：CA3Sio5(alite) and Ca2Sio4(belite), as well as aluminate and ferrite. The alite to belite ratio is responsible for the strength of Portland cement in cement clinker. The ability of determining this ratio already during the burning phase is essential for the evaluation of the cement’s final strength.
高速映射QUANTAX EDS在很短的时间内传达用于化学分类和图像解释的必要信息。
阶段分析
水泥的XRD相分析
制造过程及其最终水泥产品的质量和制造过程的性能主要由阶段（或矿物学）组成定义。在过去的十年中，XRD已成为真实相敏分析的标准，目前是晶体和无定形阶段定量分析的最直接和最可靠的分析技术。最重要的是，XRD分析在不到5分钟的时间内进行，因此超出了使用间接参数或简化模型（例如Bogue方程）等过时的技术，例如显微镜计数或滴定或概念。
