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Konfidenci
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Brittle Matrix Composites
The aim of the paper was to show the important aspect of treating waste additives as the main way to achieve sustainable development in the concrete technology. The author considers the effects of minimizing the use of cement replacing it with waste additives, on the concrete durability. The depth of carbonation is adopted as the possible measure of durability. Results of accelerated and natural tests of carbonation progress for concrete with normal and fluidal fly ash, silica fume and blast furnace slag are shown, influence on carbonation of the additive type, its content in concrete and its role (cement or aggregate substitution) is discussed. The important impact of early water curing on depth of carbonation is stated also.
Prefabrykacja
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Prefabrykacja
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Brittle Matrix Composites 9
The subjects of the symposia are on composite materials with matrices behaving as brittle in normal or special conditions. Brittle matrix composites are applied in various domains (civil engineering, mechanical equipment and machinery, vehicles, etc.) and in the last decades their importance is increasing together with their variety. Papers include: aggregate-binder composites (concretes, fibre concretes, rocks); sintered materials (ceramics); high strength composites with brittle matrices. In principle, the general problems of structures made of composite materials are not included in the papers. Various approaches to the material engineering problems are presented in the papers.
Justice as Prevention
Countries emerging from armed conflict or authoritarian rule face difficult questions about what to do with public employees who perpetrated past human rights abuses and the institutional structures that allowed such abuses to happen. Justice as Prevention: Vetting Public Employees in Transitional Societies examines the transitional reform known as "vetting"-the process by which abusive or corrupt employees are excluded from public office. More than a means of punishing individuals, vetting represents an important transitional justice measure aimed at reforming institutions and preventing the recurrence of abuses. The book is the culmination of a multiyear project headed by the International Center for Transitional Justice that included human rights lawyers, experts on police and judicial reform, and scholars of transitional justice and reconciliation. It features case studies of Argentina, Bosnia and Herzegovina, the Czech Republic, El Salvador, the former German Democratic Republic, Greece, Hungary, Poland, and South Africa, as well as chapters on due process, information management, and intersections between other institutional reforms.
