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Green recycled aggregate concrete

Authorized Users Only
2013
Authors
Radonjanin, Vlastimir
Malešev, Mirjana
Marinković, Snežana
Al Malty, Ali Emhemd Saed
Article (Published version)
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Abstract
The paper presents results of experimental investigation of concrete made with recycled concrete aggregate, low cement content and high content of different mineral supplements. Such concretes belong to "green" or "eco" concretes, since they have less impact on the environment, help in solving the problem of construction and industrial waste disposal, and contribute to the conservation of natural resources. For green recycled aggregate concrete (GRAC) production fine river aggregate and coarse recycled aggregate were used and 50% of cement by weight was replaced by a variety of inert, pozzolanic, and highly reactive mineral admixtures: milled limestone, fly ash, silica fume and metakaolin. Basic properties of ten different concrete mixtures were tested, compared and classified in terms of possible applications. Test results showed that the optimal combination of different mineral admixtures can reduce the basic disadvantage of concrete with high content of mineral supplements - the rel...atively low strength in the period up to 28-day age, which allows certain structural applications of this type of "green" concrete.

Keywords:
Recycled aggregate concrete / Mineral admixture / Hydration temperature / Compressive strength / Tensile strength / Modulus of elasticity / Water penetration / Application
Source:
Construction and Building Materials, 2013, 47, 1503-1511
Projects:
  • Utilization of by-products and recycled waste materials in concrete composites in the scope of sustainable construction development in Serbia: investigation and environmental assessment of possible applications (RS-36017)

DOI: 10.1016/j.conbuildmat.2013.06.076

ISSN: 0950-0618

WoS: 000325232600167

Scopus: 2-s2.0-84880532460
[ Google Scholar ]
72
54
URI
http://grafar.grf.bg.ac.rs/handle/123456789/527
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  • Radovi istraživača / Researcher's publications
  • Катедра за материјале и конструкције
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