Interfacial transition zone in cementitious materials

The effects of aggregate properties on lightweight concrete

Mechanism of drying-induced change in the physical properties of concrete: A mesoscale simulation study

This paper offers a brief review of the present use of scanning electron microscopy (SEM) in concrete studies, from the perspective of how research in materials science is translated into applications in construction engineering It describes the scope of present use of the method, and attempts a prospective for the near future in areas where more work could make productive use of the technology Selected case studies have also been discussed The electron microscope has been used as a research tool in understanding the root cause of the differing performance of various types of concrete under various conditions, a development tool in making better concrete, and a diagnosis tool on problems like cracking of concrete The paper also explains how sample preparation affects the type and quality of information which the SEM can produce

Use of scanning electron microscopy in concrete studies

Impact of the porosity and moisture state of coarse aggregates, and binder nature on the structure of the paste-aggregate interface: Elementary model study

Concrete is a composite material, consisting of hardened cement paste (HCP), aggregate and pores. The interfacial bond between HCP and aggregate is very important in determining some of the properties of concrete, such as the mechanical behaviour and durability. Recently, the microstructure of the transition zones between different aggregates and HCP has been studied and a mechanism for the formation of the transitional zone has been proposed by Maso. The objective of the present work has been to study the relationship between interfacial bond and mechanical behaviour of concrete in the light of both theoretical and experimental research on the microstructure of the interfacial zone.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1946427400416799

Wang Jian Guo

Papers

Effect of Bond Strength Between Aggregate and Cement Paste on the Mechanical Behaviour of Concrete