Influence of packing density and water film thickness on early-age properties of cement pasteswith limestone filler and metakaolin

Marchetti, Guillermina; Rahhal, Viviana Fátima; Irassar, Edgardo F.

doi:10.1617/s11527-016-0979-1

Cited by 42 publications

(15 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Lawrence et al concluded that a compressive strength increase with the addition of fine limestone was due to the enabling of heterogeneous nucleation (filler effect) rather than any particle packing effect [49]. We think this effect is also likely to apply for both dolomite and for the metakaolin [50,51], which was already present in the CM before any carbonate addition.…”

Section: The Effect Of Dolomite Addition At 20 °Cmentioning

confidence: 89%

Portland metakaolin cement containing dolomite or limestone – Similarities and differences in phase assemblage and compressive strength

Machner

Zając

Haha

et al. 2017

Construction and Building Materials

View full text Add to dashboard Cite

The scarceness of high-quality limestone obliges the cement industry to consider alternative supplementary cementitious materials (SCMs) for the production of blended cements. This study investigated the potential usage of dolomite instead of limestone as an addition to Portland metakaolin cement by measuring the development of the compressive strength and phase assemblages at 5 °C, 20 °C or 38 °C. Laboratory grade materials were used to identify potential differences in the impact of the carbonate on the phase assemblages. As with limestone, a strength increase was observed when dolomite is added at temperatures >5 °C due to the formation of additional carbonate AFm phases and the stabilization of ettringite. Differences were observed in the amount and type of the carbonate AFm and AFt phases formed. Thermodynamic modelling in combination with the experimental results indicate that the dolomite and limestone affect Portland metakaolin cement in a similar way, with the reactivity being the major difference between the two carbonate sources. This indicates that with regard to the strength development up to 90 days dolomite can be used instead of limestone to replace parts of a Portland metakaolin cement.

show abstract

Section: The Effect Of Dolomite Addition At 20 °Cmentioning

confidence: 89%

Portland metakaolin cement containing dolomite or limestone – Similarities and differences in phase assemblage and compressive strength

Machner

Zając

Haha

et al. 2017

Construction and Building Materials

View full text Add to dashboard Cite

show abstract

“…According to Table 1 and Figure 1, C has high density and particle size distribution with large volume of particles, bigger than the S and the G. Glass powder has the smallest ones. Having different particle size distribution favors packaging of mixtures, reducing empty spaces and increasing packing density (12). Management of these parameters is vital to obtain more resistant and more durable concretes.…”

Section: Methodsmentioning

confidence: 99%

Self-activation of slag-cements with glass waste powder

Trezza¹,

Rahhal²

2019

Mater. construcc.

View full text Add to dashboard Cite

The aim of this study is to evaluate the behavior of glass powder waste as alkaline activator of slag when both are used in blended cement. The slag blended cement was prepared with 70% slag, and then the slag was replaced with 10-20% glass powder by mass. The self-activation concept is here introduced. Ground glass releases alkalis through dissolution in a slow and sustained way over time. This would activate slag. Ground glass improves fluidity of mortars and the compressive strength overcomes dilution and increases with age due to the combined pozzolanic action of slag and glass. The proposed blended cement has better mechanical properties than slag-cement. The proposed blended cement has better mechanical properties than slag-cement and due to less use of slag, it becomes more sustainable and it contributes to waste management.

show abstract

“…LF is receiving increasing attention in the literature as a SCM since it seems to promote cement hydration [ 30 , 31 , 32 ]. A combination of SCMs in ternary systems is often proposed since there seems to be some synergy between alternative materials of different chemical composition and of different fineness [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of High Calcium Fly Ash, Ladle Furnace Slag, and Limestone Filler on Packing Density, Consistency, and Strength of Cement Pastes

Anastasiou¹

2021

Materials

View full text Add to dashboard Cite

Environmental considerations and technical benefits have directed research towards reducing cement clinker content in concrete, and one of the best ways to do this is to replace cement with supplementary cementitious materials. High calcium fly ash, ladle furnace slag, and limestone filler were investigated as supplementary cementitious materials in cement pastes, and binary mixtures were produced at 10%, 20%, and 30% cement replacement rates for each material. The water requirement for maximum packing and for normal consistency were obtained for each paste, and strength development was determined at 3, 7, 28, and 90 days for the 20% replacement rate. Furthermore, two ternary mixtures at 30% cement replacement were also prepared for maximum packing density and tested for compressive strength development. The results showed that high calcium fly ash decreased cement paste packing and increased water demand but contributed to strength development through reactivity. Ladle furnace slag and limestone filler, on the other hand, were less reactive and seemed to contribute to strength development through the filler effect. The ternary paste with 70% cement, 20% high calcium fly ash, and 10% limestone filler showed equivalent strength development to that of the reference cement paste.

show abstract

Influence of packing density and water film thickness on early-age properties of cement pasteswith limestone filler and metakaolin

Cited by 42 publications

References 25 publications

Portland metakaolin cement containing dolomite or limestone – Similarities and differences in phase assemblage and compressive strength

Portland metakaolin cement containing dolomite or limestone – Similarities and differences in phase assemblage and compressive strength

Self-activation of slag-cements with glass waste powder

Effect of High Calcium Fly Ash, Ladle Furnace Slag, and Limestone Filler on Packing Density, Consistency, and Strength of Cement Pastes

Contact Info

Product

Resources

About