Ettringite Formation in Low C 3 a Portland Cement Exposed to Sodium Sulfate Solution

González, María Cristina García; Irassar, Edgardo F.

doi:10.1016/s0008-8846(97)00093-8

Cited by 85 publications

(23 citation statements)

References 12 publications

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“…However, a decrease in the compressive strength was observed after this duration (Fig. 7) and a drop of 11.51% for NM (27. This delay may be attributed to the formation of gypsum at the young age, a result which complied with that of Gonzfilez [38] and Santhanam [39]. According to Çavdar [1], the formation of gypsum contributes positively to the splitting tensile strength.…”

Section: Compressive and Splitting Tensile Strengthssupporting

confidence: 66%

Investigations for properties improvement of recycled PE polymer particles-reinforced mortars for repair practice

Aattache

Soltani

Mahi

2017

Construction and Building Materials

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Section: Compressive and Splitting Tensile Strengthssupporting

confidence: 66%

Investigations for properties improvement of recycled PE polymer particles-reinforced mortars for repair practice

Aattache

Soltani

Mahi

2017

Construction and Building Materials

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“…One possible pathway to ettringite formation with Na 2 SO 4 is via the formation of gypsum as an intermediary product . Such a reaction is given in Eqs.…”

Section: Discussionmentioning

confidence: 99%

Very High Volume Fly Ash Cements. Early Age Hydration Study Using Na₂SO₄ as an Activator

2013

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The early age ambient temperature hydration of a hybrid cement formulation containing very high volumes of coal fly ash (~80% by dry mass) and activated by Na2SO4 is presented. The Na2SO4 salt acts as a safe and convenient in situ source of alkali to activate fly ash glassy phases without undesirable effects on cement clinker hydration. Comparison to a reference paste with gypsum instead of sodium sulfate revealed that Na2SO4 reduced setting times, shortened the induction period, and increased early alite hydration and compressive strength development, but also restricted ettringite formation. When replacing the active fly ash component for milled sand of a similar particle size, the Na2SO4‐activated pastes set even quicker, no ettringite was observed, and early strengths were considerably reduced. Possible reaction mechanisms in the hybrid pastes are discussed.

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“…The formation of calcium-sulpho-aluminate in cement treated soils is not new (Kollman, 1978;Sherwood, 1995;Glasser, 1996;Gonzalez and Irasser, 1996;Nagataki and Gomi, 1998). The reaction mechanisms involved in the formation of ettringite and related effects in cement treated soils are similar to lime treated system.…”

Section: Soil-cement-sulphate Reactionsmentioning

confidence: 99%

Sulphate attack and ettringite formation in the lime and cement stabilized marine clays

Rajasekaran¹

2005

Ocean Engineering

215

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Ettringite Formation in Low C 3 a Portland Cement Exposed to Sodium Sulfate Solution

Cited by 85 publications

References 12 publications

Investigations for properties improvement of recycled PE polymer particles-reinforced mortars for repair practice

Investigations for properties improvement of recycled PE polymer particles-reinforced mortars for repair practice

Very High Volume Fly Ash Cements. Early Age Hydration Study Using Na₂SO₄ as an Activator

Sulphate attack and ettringite formation in the lime and cement stabilized marine clays

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Ettringite Formation in Low C 3 a Portland Cement Exposed to Sodium Sulfate Solution

Cited by 85 publications

References 12 publications

Investigations for properties improvement of recycled PE polymer particles-reinforced mortars for repair practice

Investigations for properties improvement of recycled PE polymer particles-reinforced mortars for repair practice

Very High Volume Fly Ash Cements. Early Age Hydration Study Using Na2SO4 as an Activator

Sulphate attack and ettringite formation in the lime and cement stabilized marine clays

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Product

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Very High Volume Fly Ash Cements. Early Age Hydration Study Using Na₂SO₄ as an Activator