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Lecture

Microstructure and chloride ingress

Description

This lecture covers the analysis of microstructure and chloride ingress in cementitious materials, including mechanisms, binding capacity, and transport properties. It discusses the porosity, hydration degree, and different types of binding, such as chemical and physical binding. The lecture also explores the concept of solid solutions in cementitious materials and their significance in understanding diffusion. Additionally, it delves into XRD and SEM-EDX analyses to study the formation of solid solutions and the binding of chloride in C-S-H. The lecture concludes by examining the transport properties, including resistivity and conductivity, and the impact of porosity on the microstructure.

In MOOC

Sorption and transport in cementitious materials

Official source

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Ceramography is the art and science of preparation, examination and evaluation of ceramic microstructures. Ceramography can be thought of as the metallography of ceramics. The microstructure is the structure level of approximately 0.1 to 100 μm, between the minimum wavelength of visible light and the resolution limit of the naked eye. The microstructure includes most grains, secondary phases, grain boundaries, pores, micro-cracks and hardness microindentations.

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Formulation is a term used in various senses in various applications, both the material and the abstract or formal. Its fundamental meaning is the putting together of components in appropriate relationships or structures, according to a formula. Etymologically formula is the diminutive of the Latin forma, meaning shape. In that sense a formulation is created according to the standard for the product. Disciplines in which one might use the word formulation in the abstract sense include logic, mathematics, linguistics, legal theory, and computer science.

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