Novel Cements and Cement Products for Applications in the 21st Century

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Title: Novel Cements and Cement Products for Applications in the 21st Century

Author(s): D. M. Roy and M. R. Silsbee

Publication: Special Publication

Volume: 144

Issue:

Appears on pages(s): 349-382

Keywords: cement pastes; cements; ceramics; flexural strength; high-early-strength cements; moisture; novel cements; porosity; silica fume; strength; waste management; General

Date: 3/1/1994

Abstract:
Novel cements used in the making of very strong or otherwise high-performance cementitious materials are discussed. These include chemically bonded ceramics (CBC), a generic term describing ceramic-like materials formed by chemical reactions at ordinary temperatures. Innovations in chemistry, as well as processing, are responsible for the major improvements. MDF and DSP cements are discussed briefly, as are rapid-setting belite-sulfoaluminate and related cements. Applications of certain cements in waste management are also discussed. These include alkali-activated cements, which generate very high early strength, develop a working strength in about 4 hr, have relatively low porosity, and consequently have low permeability. A summary is included of the current status of the materials and their applications, limitations, and potential for further innovations, with a view to applications in the 21st century.