A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Carbonate rocks as fillers in blended cements: Physical and mechanical properties
https://orcid.org/0000-0001-8994-2616
https://orcid.org/0000-0002-4193-0066
https://orcid.org/0000-0003-4488-0014
Highlights The influence up to 30% of dolostone filler on the performance of blended cements was investigated and compared with the wide use of limestone filler. The packing density and the water film thickness of blended cements were evaluated. The stability of the dolostone filler in the cement blended cured at 40 °C for 365 days was studied. The compressive strength of mortars with dolostone and limestone filler was determined up to 365 days.
Abstract This study investigated the physical and chemical effects of dolostone (DF) as fillers (10 to 30% by weight) in blended portland cements (BPC) and compared with limestone (LF) ground with similar fineness. The addition of both fillers increases the packing density of BPC up to 40% replacement and the standard mortar, while thewater film thickness was greater than those corresponding to PC up to a w/cm ~ 0.45. For increasing filler replacement, themini-slump decreases, the setting time is in advance and the hydration heat curves show ashorter dormant period, acceleration of C3S-hydration and greater sulfate depletion.These phenomena were more significant for LF. The hydrated compounds and it apparition sequence were similar at 20 °C for DF and LF, but no sign of harmful dedolomitization reaction was foundat 40 °C during 365 days.The compressive strength of the mortar after 28 days depends on the percentage of filler replaced, regardless of its mineralogical composition. Results suggest that DF, as occurs with LF, is a suitable additionas main component to BPC withsatisfactory and stable properties.
Carbonate rocks as fillers in blended cements: Physical and mechanical properties
https://orcid.org/0000-0001-8994-2616
https://orcid.org/0000-0002-4193-0066
https://orcid.org/0000-0003-4488-0014
Highlights The influence up to 30% of dolostone filler on the performance of blended cements was investigated and compared with the wide use of limestone filler. The packing density and the water film thickness of blended cements were evaluated. The stability of the dolostone filler in the cement blended cured at 40 °C for 365 days was studied. The compressive strength of mortars with dolostone and limestone filler was determined up to 365 days.
Abstract This study investigated the physical and chemical effects of dolostone (DF) as fillers (10 to 30% by weight) in blended portland cements (BPC) and compared with limestone (LF) ground with similar fineness. The addition of both fillers increases the packing density of BPC up to 40% replacement and the standard mortar, while thewater film thickness was greater than those corresponding to PC up to a w/cm ~ 0.45. For increasing filler replacement, themini-slump decreases, the setting time is in advance and the hydration heat curves show ashorter dormant period, acceleration of C3S-hydration and greater sulfate depletion.These phenomena were more significant for LF. The hydrated compounds and it apparition sequence were similar at 20 °C for DF and LF, but no sign of harmful dedolomitization reaction was foundat 40 °C during 365 days.The compressive strength of the mortar after 28 days depends on the percentage of filler replaced, regardless of its mineralogical composition. Results suggest that DF, as occurs with LF, is a suitable additionas main component to BPC withsatisfactory and stable properties.
Carbonate rocks as fillers in blended cements: Physical and mechanical properties
https://orcid.org/0000-0001-8994-2616
https://orcid.org/0000-0002-4193-0066
https://orcid.org/0000-0003-4488-0014
Highlights The influence up to 30% of dolostone filler on the performance of blended cements was investigated and compared with the wide use of limestone filler. The packing density and the water film thickness of blended cements were evaluated. The stability of the dolostone filler in the cement blended cured at 40 °C for 365 days was studied. The compressive strength of mortars with dolostone and limestone filler was determined up to 365 days.
Abstract This study investigated the physical and chemical effects of dolostone (DF) as fillers (10 to 30% by weight) in blended portland cements (BPC) and compared with limestone (LF) ground with similar fineness. The addition of both fillers increases the packing density of BPC up to 40% replacement and the standard mortar, while thewater film thickness was greater than those corresponding to PC up to a w/cm ~ 0.45. For increasing filler replacement, themini-slump decreases, the setting time is in advance and the hydration heat curves show ashorter dormant period, acceleration of C3S-hydration and greater sulfate depletion.These phenomena were more significant for LF. The hydrated compounds and it apparition sequence were similar at 20 °C for DF and LF, but no sign of harmful dedolomitization reaction was foundat 40 °C during 365 days.The compressive strength of the mortar after 28 days depends on the percentage of filler replaced, regardless of its mineralogical composition. Results suggest that DF, as occurs with LF, is a suitable additionas main component to BPC withsatisfactory and stable properties.
Carbonate rocks as fillers in blended cements: Physical and mechanical properties
Di Salvo Barsi, Antonela (author) / Marchetti, Guillermina (author) / Trezza, Mónica A. (author) / Irassar, Edgardo F. (author)
2020-03-06
Article (Journal)
Electronic Resource
English
Role of Fillers on the Performance of Blended Cements
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