Environmental CRIteria for CEMent based products ECRICEM Phase I: Ordinary Portland Cements Phase II: Blended Cements EXECUTIVE SUMMARY
نویسنده
چکیده
منابع مشابه
Center for By-products Utilization Development of Manufacturing Technology for Low-cost, High-performance Blended Cement in Wisconsin Volume Ii: Experimental Investigation
Despite the well-known economical, technical, and environmental benefits achieved by the use of the blended cements, its production has been slow to develop in the U.S.. The major aim of this project was to establish blended cement production technology through laboratory investigations. This involved production and evaluation of blended cement in the laboratory, in order to define materials, p...
متن کاملInfluence of Blended Cements with Calcareous Fly Ash on Chloride Ion Migration and Carbonation Resistance of Concrete for Durable Structures
The objective of this paper is to examine the possible use of new blended cements containing calcareous fly ash in structural concrete, potentially adequate for structural elements of nuclear power plants. The investigation included five new cements made with different contents of non-clinker constituents: calcareous fly ash, siliceous fly ash, ground granulated blastfurnace slag, and a referen...
متن کاملInternal Curing of High-Performance Blended Cement Mortars:
In the twenty-first century, most high-performance concretes, and many other ordinary concretes, are now based on blended cements that contain silica fume, slag, and/or fly ash additions. Because the chemical shrinkage accompanying the pozzolanic and hydraulic reactions of these mineral admixtures is generally much greater than that accompanying conventional portland cement hydration, these ble...
متن کاملAlpha radioactivity in Indian cement samples
ABSTRACT Background: The essential constituents of cements like lime, silica and alumina are derived from earth’s crust in which radioactive elements like uranium, thorium etc are also present in varying amounts almost everywhere. These two elements are considered as the parent elements of uranium and thorium radioactive decay series in which radon and thoron are produced respectively as decay...
متن کاملNano-scale hydrogen-bond network improves the durability of greener cements
More than ever before, the world's increasing need for new infrastructure demands the construction of efficient, sustainable and durable buildings, requiring minimal climate-changing gas-generation in their production. Maintenance-free "greener" building materials made from blended cements have advantages over ordinary Portland cements, as they are cheaper, generate less carbon dioxide and are ...
متن کامل