Concrete and Cement

常见的materials 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 spectroscopyanalyzes solids and liquids, whether organic or inorganic. It is easy to use and is generally non-destructive. Especially if organic additives are added, or for production of functional building materials, FT-IR is the ideal tool.

具体适用下可以持续数千年e conditions. Nowadays we frequently find images of cracked and weathered concrete. As concrete is a mixture of many complex chemical compounds its durability depends on environmental conditions. Saltwater, for example, leads to chemical reactions that change the volume and lead to stress and strain in the concrete structure. Chlorine (Cl) is one of the most important elements to understand the aging and deterioration of modern concrete surfaces, as an increase in Cl leads to an expansion of the matrix, forming cracks and resulting in a loss of stability in any construction over time. Consequently, it is desirable to detect even small amounts of Cl in the matrix.

Micro-XRF has developed into a powerful technique to analyse concrete by elemental mapping of the surface of a drill core using theM4 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.Read more