Effect of very fine particles on workability and strength of concrete made with dune sand
By F. Luo, L. He, Z. Pan, Wenhui Duan, Xiao Ling Zhao, F. Collins. 2013
210 citations recorded by the source corpus.
abstract This paper presents the study on the properties of concrete made with dune sand from Australian desert.With constant water–cement ratio of 0.5, dune sand concrete (DSC) and the corresponding referencesamples (concrete made with river sand) were prepared with sand–cement (S/C) ratio ranging from0.91 to 2.28. In comparison to river sand, dune sand possesses a higher amount of very fine particles(VFPs) with grain size smaller than 175 l m. These VFPs are found to modify the properties of concreteby different mechanisms depending on the level of S/C ratio. At low level of S/C ratio (S/C 1.41), excessive VFPs absorb largequantities of water on their surface and lead to the reduction in workability for DSC. As a result, moreair bubbles are introduced during compaction, leading to higher air content in DSC compared to RSC.The air bubbles increase porous space in cement paste and thereby reducing the strength of DSC. 2013 Elsevier Ltd. All rights reserved.
Subfields: Building and Construction, Civil and Structural Engineering
View Paper: https://www.semanticscholar.org/paper/22680fc58b339df8a240d80e5de8a5099920970d
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Citations in the corpus
- Sand, gravel, and UN Sustainable Development Goals: Conflicts, synergies, and pathways forward (2021, unknown): “17,18 While current global aggregate consumption of 32–50 billion tonnes per year 19,20 is dominated by high (per capita) production in North America and China (Figure 1A), the greatest relative increase in production is projected to occur in LMICs.”
- Effect of process parameters on the performance of fly ash/GGBS blended geopolymer composites (2018, background): “However, if the mixture proportioning was optimized, dune sand may interact with hydrous and anhydrous cementitious components to improve the strength [26].”