sulfate contents in fine aggregate to concrete

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  Sulfate Attack on Concrete: A Holistic Perspective

  201785 · Aluminate phases in some supplementary cementitious materials (SCM), such as in some Class C fly ash10, or higher alumina content in slag cement11, can contribute to sulfate attack. Permeability of concrete – Water-soluble sulfates penetrate concrete by a combination of capillary sorption and diffusion. Concrete mixtures with a …

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  Analysis of total chloride content in concrete - ScienceDirect

  2015121 · The results obtained suggest that the effect of chloride content in mixing water has minimal to moderate influence upon the chloride content of concrete up to w / c equal to 0.4. It also shows that aggregate is the critical ingredient in terms of determining the presence of chloride in concrete.

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  Behavior of High Performance Concrete Exposed to …

  202394 · Four sulfate contents (0.5, 1.5, 2.0, and 2.5 %) in fine aggregate were studied. Metakaolin was used as a pozzolanic material, which has proved itself as a good active one.

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  The sulfate transfer characteristics in recycled aggregate concrete ...

  Abstract Recycled aggregate concrete (RAC) has multiple interface transition zones (ITZs) due to its complex composition, providing convenient ion transfer channels. Therefore, it is significant to explore the changes of the internal pore structure in RAC under ion erosion conditions for quantifying and predicting ion transfer mechanisms. This paper innovatively …

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  Investigation of the durability of eco-friendly concrete …

  2021121 · Semantic Scholar extracted view of "Investigation of the durability of eco-friendly concrete material incorporating artificial lightweight fine aggregate and pozzolanic minerals under dual sulfate attack" by Yating Zhang et al.

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  QUALITATIVE EVALUATION OF FINE …

  In order to study the flexural fatigue resistance of calcium sulfate whisker-modified recycled fine aggregate concrete (RFAC), flexural fatigue cyclic loading tests at different stress levels (0.6, 0.7, and 0.9) considering a calcium sulfate whisker (CSW) admixture as the main influencing factor were designed. Furthermore, the fatigue life was analyzed, and fatigue …

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  Solving high sulfate content of sand used in concrete by …

  202111 · Protection against sulfate attack requires improving the concrete microstructure [11], and this is the target of this research by using magnetic water technology to treat fine aggregate (sand) from the sulfate.

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  Limiting total internal sulphates in 15–75 MPa concrete in …

  201011 · The sulfate content of aggregates used in concrete works is determined by test No.5 of the British Standard BS 1337-2018 and then compare the results with the limit of the British standard BS 882: ...

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  Sulfate resistance of ultrahigh-performance concrete with recycled fine ...

  The effect of sulfate attack (SA) on the strength of ultrahigh-performance concrete (UHPC) made with different replacements (0%, 50% and 100% by weight) of natural fine aggregate with recycled fine aggregate (RFA) was investigated.

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