The greening of the concrete industry

Meyer, Christian

doi:10.1016/j.cemconcomp.2008.12.010

Cited by 1,187 publications

(478 citation statements)

References 4 publications

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“…Cement production figures amount to about 8-12% of concrete production, which leads to between 28 and 43 billion tons concrete produced in 2011. The production of cement has been linked to a high CO 2 emission, this industry being estimated to generate $7% of all liberated CO 2 [2]. Besides this, the cement industry is known to consume both energy and natural resources (water and mineral raw materials) in large amounts.…”

Section: Introductionmentioning

confidence: 99%

Activation of liberated concrete fines and their application in mortars

Florea

Ning

Brouwers

2014

Construction and Building Materials

109

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Section: Introductionmentioning

confidence: 99%

Activation of liberated concrete fines and their application in mortars

Florea

Ning

Brouwers

2014

Construction and Building Materials

109

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“…Thus, while cement made with fly ash cementitious additives uses waste from coal-fired power stations and can have useful properties fitting it for a range of uses like mass structures its relatively slow rate of strength development can make it not suitable for high early strength applications. Similarly, concrete made from recycled aggregate may have lower densities than concrete made from naturally occurring aggregate because some mortar remains attached to it and resulting larger water absorption than naturally occurring material [28]. There is also the risk that flies ash may become less readily available as the world moves away from coal-fired power stations.…”

Section: Developments In Engineering Materialsmentioning

confidence: 99%

Meeting the Challenges of Engineering a Sustainable Future

Thorpe¹

2018

GEOMATE

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Engineers have a significant role in the sustainable development and management of resources. This responsibility encompasses the three generally accepted dimensions of sustainability -environment, economic and social -and applies to engineering projects throughout their life cycle. Sustainable engineering practice is supported by professional engineering associations, such as Engineers Australia, which includes the promotion of sustainability as a principle of its Code of Ethics. It has also been given impetus by the recent Paris Agreement on climate change. However, while there has been considerable progress in this field, there is much work required to achieve a truly sustainable future. While the industry has a major role in promoting and encouraging sustainable practices in engineering projects, educators also have a significant role in this process, through developing and fostering the knowledge and skills of sustainability in engineers. At the undergraduate level, this task is normally undertaken through courses that teach the principles of sustainable engineering practice. A major challenge for educators, however, is the ongoing development of the knowledge and skills of sustainable engineering taught in such courses. While postgraduate courses can achieve this objective, the majority of practicing engineers are unlikely to be able to undertake the detailed formal study. Meeting this gap between sustainable engineering knowledge and its implementation, therefore, presents challenges to educators. Possible options proposed include an ongoing commitment by government and society to sustainability in engineering projects, ongoing implementation of innovative sustainable engineering practices, and lifelong learning in sustainable engineering practices by professional engineers.

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“…As a result of this, OPC annual consumption is reported to contribute about 5-7% of global atmospheric and anthropogenic CO 2 emission (Huntzinger and Eatmon 2009;Meyer 2009). Therefore, there is need to cut short the consumption of OPC by reducing its utilization in the construction industry.…”

Section: Introductionmentioning

confidence: 99%

Performance of Different Grades of Palm Oil Fuel Ash with Ground Slag as Base Materials in the Synthesis of Alkaline Activated Mortar

Yusuf

Johari

Ahmad

et al. 2014

ACT

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This study examined the alkaline activated ground slag (GS) blended with different grades of palm oil fuel ash (POFA), namely: ground POFA (GPOFA), treated or calcined GPOFA (TPOFA) and ground TPOFA or ultrafine POFA (UPOFA) in the synthesis of alkaline activated GS-POFA mortar (AAG-POFA). The AAG-POFA mortars were prepared with 8M-NaOH aq and Na 2 SiO 3aq (Ms = SiO 2 /Na 2 O = 3.3) activators, and then cured at 60 o C for 24 h. The findings showed that the grinding and calcination of POFA reduced the carbon content, loss on ignition, enhanced its fineness and increased the mineral (oxide) compositions. The grades of POFA used for the synthesis of AAG-POFA products impacted the morphologies of its microstructures, compressive strength, carbonation and amorphousity. TPOFA and UPOFA could be successfully used for the synthesis of AAG-POFA mortar with considerable structural strength. While AAG-UPOFA produced the highest mortar strength, the production of AAG-TPOFA mortar was more energy conservative. Finally, GPOFA was practically unsuitable for the synthesis of AAG-POFA as it resulted in low strength products while its mixture was characterized with low consistency, and poor dissolution or hydroxylation upon reacting with the alkaline activators.

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The greening of the concrete industry

Cited by 1,187 publications

References 4 publications

Activation of liberated concrete fines and their application in mortars

Activation of liberated concrete fines and their application in mortars

Meeting the Challenges of Engineering a Sustainable Future

Performance of Different Grades of Palm Oil Fuel Ash with Ground Slag as Base Materials in the Synthesis of Alkaline Activated Mortar

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