TY - JOUR
T1 - Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness
AU - Bondar, Dali
AU - Nanukuttan, Sreejith
AU - Provis, John L.
AU - Soutsos, Marios
PY - 2019/5/1
Y1 - 2019/5/1
N2 - Many studies have been dedicated to the properties of alkali-activated slag concretes as a form of low-carbon high performance concrete, but less work has been focused on the application of mix design procedures to have a dense, durable and cost-efficient alkali-activated concrete. This study proposes a method for selecting the mix proportions of alkali-activated concretes based on the packing fraction of materials. The design method is based on the selection of the volumetric proportions of sand and coarse aggregate according to an ideal particle gradation curve. To validate this method, trial castings were carried out for concrete mixes containing alkali activated slag (AAS) with different paste contents to suggest the most cost-efficient concrete for different classes of workability and applications. Compaction and pore structure of these mixes studied by optical microscopy have shown that the design of AAS concretes based on the proposed method resulted in a dense and workable mix.
AB - Many studies have been dedicated to the properties of alkali-activated slag concretes as a form of low-carbon high performance concrete, but less work has been focused on the application of mix design procedures to have a dense, durable and cost-efficient alkali-activated concrete. This study proposes a method for selecting the mix proportions of alkali-activated concretes based on the packing fraction of materials. The design method is based on the selection of the volumetric proportions of sand and coarse aggregate according to an ideal particle gradation curve. To validate this method, trial castings were carried out for concrete mixes containing alkali activated slag (AAS) with different paste contents to suggest the most cost-efficient concrete for different classes of workability and applications. Compaction and pore structure of these mixes studied by optical microscopy have shown that the design of AAS concretes based on the proposed method resulted in a dense and workable mix.
KW - Alkali activated slag concrete
KW - Efficient mix design
KW - Packing fraction
UR - http://www.mendeley.com/research/efficient-mix-design-alkali-activated-slag-concretes-based-packing-fraction-ingredients-paste-thickn
U2 - 10.1016/j.jclepro.2019.01.332
DO - 10.1016/j.jclepro.2019.01.332
M3 - Article
SN - 0959-6526
VL - 218
SP - 438
EP - 449
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -