INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
capítulos de libros
Título:
Energy Efficiency as a driver for materials innovations
Autor/es:
CAGGIANO A.,; UKRAINCZYK N.,; KOENDERS E.A.B.,; GILKA-BÖTZOW A.,
Libro:
VIELFALT IM MASSIVBAU
Editorial:
Ernst & Sohn
Referencias:
Año: 2018; p. 789 - 805
Resumen:
Encouraging innovations and developments in the field of construction and building materials can be achieved by embracing energy efficiency as the key parameter, and while aiming for a holistic approach that leads to an improved sustainability perspective. Energy efficiency can be obtained by an unbiased reevaluation of prevailing concepts, or by reconsidering accepted solutions for most frequently used construction materials. In this respect, international research efforts are tending towards finding alternative solutions that enhance the carbon footprint of cement. This supports the development of so called ?ecological cements? (or Ökozement in German), with the aim to drive its image from ?grey to greener?. This development may commence from the raw materials as well as from the end-product side. In this, secular materials originating from waste sources may be considered as an alternative source of raw materials for construction as well. Main question is on the reactivity of waste products and on the possible alternative use of such secular materials. A potential development in this direction, which tends to give an answer to ecological binders, is represented by alkali-activated binders or the more explicit one called geopolymer. With these binders, cement is fully replaced by pozzolanic materials which are activated by added alkalis. In this paper, the backgrounds and possibilities of geopolymers will be briefly discussed with some features presented. After that, heat storage materials are presented where phase change materials are used to make a concrete more susceptible to heat accumulation and liberation with the aim to balance out the daily temperature variations in a building. Finally, ultra-light cementitious foams are presented and discussed showing different pore morphologies and a model to design the foam structure and thermal performance.