Toward Green Concrete for Better Sustainable Environment
By B. Suhendro. 2014
352 citations recorded by the source corpus.
Abstract Eight to 10 percent of the world's total CO 2 emissions come from manufacturing cement. The global warming gas is released when limestone and clays are crushed and heated to high temperatures. Green concrete is defined as a concrete which uses waste material as at least one of its components, or its production process does not lead to environmental destruction, or it has high performance and life cycle sustainability. Various efforts have been conducted by researchers to arrive at some alternatives that are able to significantly reduce high energy consumed and environmental impacts during fabrication process of cement, including implementing the concept of industrial ecology and green chemistry as well as nanoengineering that study the behavior of the structure and organization of nanoparticles of cement in the mix for achieving higher performance. The cleaner technologies in concrete production, such as substituting relatively high percentage of cement by fly ash (up to 100%), the use of other natural pozzolans, development of concrete with recycling or waste materials, and developing nanoconcrete by integrating CNT's or self sensing CNT's in the concrete mix for higher performance in terms of strength, stiffness, and durability, have been developed and are addressed in this paper. Several efforts that have been done so far in implementing the concept of green concrete and material development of nanosilica in Indonesia is discussed. Finally, problems in the realization of and potential barriers to green concrete as well as political scenarios that have been adopted by several countries through implementation of various priorities and deregulation in various fields are also discussed.
Subfields: Civil and Structural Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/01bc5588d36f2b43134e6cdeefbe52a4383867ab
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Citations in the corpus
- Characterisation of reactive magnesia and sodium carbonate-activated fly ash/slag paste blends (2015, background): “0 tonne of CO2 is emitted per tonne of cement 53 clinker produced [3], which is responsible for 8-10% of the total man-made CO2 emissions 54 [4].”
- Measurement of tensile bond strength of 3D printed geopolymer mortar (2018, background): “materials, especially, ordinary Portland Cement (OPC) as a printable material is creating negative environmental impact by directly releasing CO2 into the atmosphere [4].”