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Properties of Nanoclay Modified High-Performance Concrete Undergoing Freeze-Thaw Cycles in Salt Lake Brine

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In view of the obvious invalidity of high-performance concrete in the salt lake regions, nanoclay was added in high-performance concrete as an active admixture to withstand the terrible environment of salt lake regions. The properties (compressive strength and mass loss rate) of concrete modified with nanoclay undergoing freeze-thaw cycles in simulative salt lake brine were investigated, and the microstructures of the concrete were analyzed by XRD and SEM-EDS in detail. The results showed that nanoclay gave great rise to the performance of concrete after freeze-thaw cycles in simulative salt lake brine, owning to the denser microstructure of concrete with nanoclay, the invasion difficulties of Mg2+ from the salt lake brine into concrete with nanoclay, and the restriction of the dissolution of Ca(OH)2 and formation of CaSO4 ยท 2H2O.
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Keywords: FREEZE-THAW CYCLE; HIGH-PERFORMANCE CONCRETE; NANOCLAY; PROPERTIES; SALT LAKE BRINE

Document Type: Research Article

Publication date: September 1, 2019

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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