Рубрика: Eco-efficient construction and building materials

Some Pratical Cases

Several European associations of the concrete industry (BIBM, ERMCO, UEPG, EUROFER, and CEMBUREAU EFCA), in collaboration with the Dutch envi­ronmental consultant INTRON BV studied the possibility of minimizing the environmental impacts of concrete elements. One of the objectives of this study, was to develop the tool EcoConcrete, in order to evaluate the environmental impact associated […]

Eco-Labels and Environmental Product Declarations

Eco-labels were created to favor the choice of products with enhanced environ­mental performance and provide a guarantee for a certain environmental perfor­mance certified by an independent entity. Since they are quite simple and their meaning is unambiguous these labels have obvious advantages when compared to LCA. Although the advantages of eco-labels are clear, it is […]

LCA of Construction and Building Materials

The LCA ‘‘includes the complete life cycle of the product, process or activity, i. e., the extraction and processing of raw materials, manufacturing, transportation and distribution, use, maintenance, recycling, reuse and final disposal’’ (Setac 1993). The application of LCA has been regulated internationally since 1996 under ISO14040, ISO14041, ISO14042 and ISO14043. Some of the biggest […]

Bactericidal Capacity

One of the most important applications of materials with photocatalytical prop­erties concerns the destruction of fungi and bacteria. Indoor fungi and bacteria proliferation are one of the main causes responsible for construction materials degradation and also for health problems (Zyska 2001; Santucci et al. 2007; Wiszniewska et al. 2009; Bolashikov and Melikov 2009) because fungi […]

Photocatalytic Applications

The most known application of nanomaterials in the construction industry relates to the photocatalytic capacity of semiconductor materials. Several semiconductors materials, such as TiO2, ZnO, Fe2O3, WO3 and CdSe, possess photocatalytic capacity (Makowski and Wardas 2001). However, TiO2 is the most used of all because of its low toxicity and stability (Djebbar and Sehili, 1998). […]

Composites with Nanoparticles

Nanoparticles have a high-surface area to volume ratio providing high-chemical reactivity. They act as nucleation centers, contributing to the development of the hydration of Portland cement. Most investigations use nanosilica while some already used nano-Fe2O3. The production of nanoparticles can be obtained either through a high-milling energy (Sobolev and Ferrada-Gutierrez 2005) or by chemical synthesis […]

Cementitious Composites with Enhanced Strength and Durability

10.2.1 Investigation of Portland Cement Hydration Products Concrete is the most used construction material on Planet Earth and presents a higher permeability that allows water and other aggressive elements to enter, leading to carbonation and chloride ion attack, resulting in steel corrosion problems. Therefore, the nanoscale study of the hydration products (C-S-H, calcium hydroxide, ettringite, […]