Towards More Sustainable And
Environmentally-friendly Concretes:
The Use Of Silica Fume
Author(s)
A. Kanellopoulos, I. Ioannou & M. F. Petrou
Abstract
Concrete is the most widely used construction material. At the same time,
however, the concrete industry is a major CO2 emitter thus contributing towards
global warming. While enhanced efficiency in the production of concrete is not
likely to dramatically reduce the CO2 emissions, cement replacement by a
supplementary material or mineral additive, such as silica fume, which is not
associated with CO2 emission, can substantially reduce the aforementioned
problem. The present work discusses the benefits of incorporating mineral
additives in concrete and shows that these additives can improve both the
mechanical and physical properties of the end-product, and hence its durability,
albeit with a reduction in cement content.
Keywords: mineral additives, concrete, sustainability, durability, mechanical
properties.
1 Introduction
Concrete is the most widely used construction material with annual production
exceeding 6.4 billion cubic metres [1]. At the same time, however, the concrete
industry is a major CO2 emitter thus contributing towards global warming. The
production of cement alone contributes about 5% to the global anthropogenic
CO2 emissions [2]. The average intensity of CO2 emissions from total global
cement production is 222 kg per ton of cement. In terms of conventional
concrete mixtures, this is equivalent to more than 100 kg of CO2 emissions per
cubic metre of concrete. While enhanced efficiency in the production of concrete
Keywords
mineral additives, concrete, sustainability, durability, mechanical
properties.
Related Book
Other papers in this volume
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