Chapter 3 Cement

§3.1 Introduction Advantages of cement Classification Summary

Introduction Portland cement was developed in the nineteenth century. It has become one of the most important building materials. It has complex chemical compositions, but the main cementing compound is calcium silicate hydrate. Ordinary Portland cement can be modified for high early strength, for sulfate resistance, for low heat production, or for use in masonry.

Introduction For architectural use, it can be formed white, black, or in various colors. High-alumina cement and magnesium-oxy-chloride cement are different from Portland cement in chemical compositions.

Introduction Classification Application General Cement Portland Cement Ordinary Portland Cement Portland Blast-Furnance-Slag Cement Portland Pozzlana Cement Portland Fly-Ash Cement Composite Portland Cement

Characteristic Cement Introduction Classification Special Cement Masonry cement Oil well cement Characteristic Cement Quick-hardening cement Expansive cement Sulfate resisting cement Modified cement

Sulfoaluminate Cement Introduction Classification Chemical Component Portland Cement Common engineering Aluminous Cement Sulfoaluminate Cement Rush- repairing project, earlier strength project, engineering constructing in winter, anti-corrosion and freezing resistance Earlier strength/Antisulfate/Rush-repairing project/Anchor/ underground engineering

Summary Among many types of cement used in China, Portland Cement accounts for more than90% of the products of cement. We should stress the study of the compound, technical property, and application of Portland Cement in cement learning.