2015
DOI: 10.1016/j.clay.2015.06.043
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Effect of metakaolin addition and seawater mixing on the properties and hydration of concrete

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Cited by 108 publications
(33 citation statements)
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“…Based on the results presented here, it can be concluded that seawater has a noticeable effect on increasing the hydration rate in the early stages of hydration and that this effect is even more pronounced when seawater is mixed with NS. As has been reported by Li et al (2015) and Parthasarathy et al (2017), the formation of CH in the early stages is promoted as a result of the acceleration of the hydration process by the chlorides in seawater. CH is therefore consumed at the early stage of hydration, due to the very high pozzolanic activity of NS, resulting in the production of a C-S-H phase.…”
Section: Hydration Kineticssupporting
confidence: 65%
“…Based on the results presented here, it can be concluded that seawater has a noticeable effect on increasing the hydration rate in the early stages of hydration and that this effect is even more pronounced when seawater is mixed with NS. As has been reported by Li et al (2015) and Parthasarathy et al (2017), the formation of CH in the early stages is promoted as a result of the acceleration of the hydration process by the chlorides in seawater. CH is therefore consumed at the early stage of hydration, due to the very high pozzolanic activity of NS, resulting in the production of a C-S-H phase.…”
Section: Hydration Kineticssupporting
confidence: 65%
“…With a pH value of 7, water could not activate MK, which was activated later by calcium hydroxide formed during the hydration of cement in mortar. The improvement of compressive strength of mortar by MK was due to the accelerated hydration of cement, filler effect, and pore structure refinement by MK, as reported in previous studies (Li et al, 2015).…”
Section: Compressive Strengthsupporting
confidence: 81%
“…When MK was added into concrete, the compressive strength could be improved, permeability, and porosity could be decreased and pore structure could be refined due to the filler effect, acceleration of hydration, and pozzolanic reaction with CH to form C-S-H (Wild et al, 1996;Aquino et al, 2001;Lagier and Kurtis, 2007;Gueneyisi et al, 2008;Shui et al, 2010;Fernandez et al, 2011;Kadri et al, 2011). The compressive strength increased with the content of MK, and the maximum effect was reached at 28 days as observed by many researchers previously (Justice and Kurtis, 2007;Khatib, 2008Khatib, , 2009Arikan et al, 2009;Johari et al, 2011;Kadri et al, 2011;Antoni et al, 2012;Li et al, 2015). The early age (before 24 h) autogenous shrinkage of concrete decreased with the increase of content of MK due to the dilution effect of MK, although the longterm autogenous shrinkage of concrete containing MK could be higher than that of control specimen, due to the acceleration of Portland cement hydration, and pozzolanic reaction by MK with calcium hydroxide (Kinuthia et al, 2000;Brooks and Johari, 2001).…”
Section: Introductionmentioning
confidence: 68%
“…Many researchers have studied the properties of concrete hydration. Li et al studied the effects of substituting meta‐kaolin and mixing with seawater on the hydration properties of concrete. Meta‐kaolin improved compressive strength by modifying the pore structure.…”
Section: Introductionmentioning
confidence: 99%