Seawater and sea sand are widely used in marine concrete to overcome the shortage of freshwater and river sand. However, the effect of the various salts in seawater and sea sand on the performance of anti-washout underwater concrete (AWC) is unclear. In this study, the influence of seawater and sea sand, as well as the aggressive ions in seawater, on the anti-washout ability, mechanical performance, and microscopic structure of AWC mortar are studied systematically. The AWC mortar molded in seawater has a lower compressive strength even though its indicators of anti-washout ability perform better than that in freshwater. This is because Mg2+ in seawater chemically binds with OH- in cement to form Mg(OH)2 film absorbed by anti-washout admixture(AWA), which inhibits the release of substances in AWC while also introducing more defects in AWC. This study lays the foundation for promoting the application of seawater and sea sand AWC in marine engineering.
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EDACS Int, Ohrid 6000, North MacedoniaChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
Baluch, Sher Q.
Yang, Hyung-Sik
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Chonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South KoreaChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
Yang, Hyung-Sik
Kim, Jung-Gyu
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Chonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South KoreaChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
Kim, Jung-Gyu
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Kim, Jong-Gwan
Qaisrani, Saeed
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COMSATS Univ, Dept Environm Sci, Islamabad 61000, PakistanChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
机构:
EDACS Int, Ohrid 6000, North MacedoniaChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
Baluch, Sher Q.
Yang, Hyung-Sik
论文数: 0引用数: 0
h-index: 0
机构:
Chonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South KoreaChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
Yang, Hyung-Sik
Kim, Jung-Gyu
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h-index: 0
机构:
Chonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South KoreaChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea
Kim, Jung-Gyu
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机构:
Kim, Jong-Gwan
Qaisrani, Saeed
论文数: 0引用数: 0
h-index: 0
机构:
COMSATS Univ, Dept Environm Sci, Islamabad 61000, PakistanChonnam Natl Univ, Grad Sch, Dept Energy & Resources Engn, Gwangju 61186, South Korea