Results 81 to 90 of about 900,629 (184)

H2 production under gamma irradiation of a calcium aluminate cement: an experimental study on both cement pastes and its stable hydrates

, 2021
International audienceThe objective of this paper is to investigate the use of calcium aluminate cements as alternative cements within the context of nuclear waste stabilization by solidification. Using an external 60 Co source, the effect of γ-radiation
de Noirfontaine, Marie-Noëlle, Dannoux- Papin, Adeline, Courtial, Mireille, Gorse -Pomonti, Dominique, Acher, Loren, Dunstetter, Frédéric, Cavani, Olivier, Tusseau-Nenez, Sandrine, Haas, Jérémy, Chartier, David, Dominique Gorse – Pomonti, Mireille Courtial, Adeline Dannoux-Papin, Dannoux-Papin, Adeline, Gorse–pomonti, Dominique, Jérémy Haas, David Chartier, Sandrine Tusseau-Nenez, Loren Acher, Olivier Cavani, Frédéric Dunstetter, Marie-Noëlle de Noirfontaine   +21 more
core   +1 more source

Enhancing the performance of calcium aluminate cement using Vitamin-C as a multifunctional admixture

Case Studies in Construction Materials
Vitamin-C (VC) is a water-soluble vitamin abundantly found in various plants. In this work, VC is explored as a green and multifunctional admixture for enhancing the performance of calcium aluminate cement (CAC).
Yingyao Qin, Maimai Qiao, Chunning Pei
doaj   +1 more source

Potential of Saudi Arabian bauxite to produce low-carbon cement

Cement
To produce calcium aluminate cement (CAC), bauxites are usually fused with lime/limestone at high temperature (1600 °C). At this temperature, the bauxite´s hydrates of alumina break down - dehydroxylation - and combine with calcium forming monocalcium ...
S. Pavia, O. Alelweet
doaj   +1 more source

Influence of Calcium Aluminate Cement Addition on the Hydration and Strength of Limestone Calcined Clay Cement

Limestone calcined clay cement (LC3) is an alternative cement that allows reduction by up to 40% of the CO2 emissions per ton of cement produced. With this green binder, it is possible to replace 50% or more of Portland cement (PC) while maintaining ...
Lothenbach, Barbara, Housseini, Sarra El, Scrivener, Karen, El Housseini, Sarra (author), Scrivener, Karen (author), Lothenbach, Barbara (author)   +5 more
core   +1 more source

Effect of CaSO4 on hydration and phase conversion of calcium aluminate cement

, 2019
Conversion from metastable phase to stable phase in calcium aluminate cement (CAC) causes volumetric instability, resulting in loss of compressive strength.
Son, H. M., Kim, H. Y., Seo, J. H., Lee, Haeng-Ki, Park, Sol Moi   +4 more
core   +1 more source

Shrinkage behaviour and related corrosion performance of low-pH cementitious materials based on OPC or CAC

Materiales de Construccion, 2016
Prior to using low-pH cementitious materials in underground repositories for high level waste, the characteristics determining their long-term durability must be analysed in depth.
J. L. García-Calvo, M. Sánchez, L. Fernández-Luco, M. C. Alonso   +3 more
doaj   +1 more source

Effect of Polycarboxylate–Ether Admixtures on Calcium Aluminate Cement Pastes. Part 2: Hydration Studies

, 2016
In part 1, the effect of different polycarboxylate ether (PCE) admixtures with Portland-based binder (OPC) and calcium aluminate cement (CAC) pastes has been studied; indicating a low CAC–PCEs compatibility.
María del Mar Alonso (1872034), Francisca Puertas (1872040), Marta Palacios (1872037)   +2 more
core   +1 more source

Thermomechanical evaluation of self-flowing refractory castables with and without the addition of aluminate cement [PDF]

, 2012
Much has been discussed about the advantages regarding the thermomechanical performance of self-flow refractory castables (SFRC), with very little or no addition of calcium aluminate cement (CAC) when compared to conventional composites with cement ...
Pinto, Deesy G., Devezas, Tessaleno, Silva, Abílio P., Segadães, A M   +3 more
core   +1 more source

Durability of ternary binders based on Portland cement, calcium aluminate cement and calcium sulfate [PDF]

, 2005
The applications of systems based on Portland Cement (PC), Calcium Aluminate Cement (CAC) and Calcium Sulphate (C$) are usually limited to indoor uses in the field of Building Chemistry because no durability data exist on the outdoor uses.
Lamberet, Séverine
core   +2 more sources

Tailoring the hardening performance and microstructure of calcium aluminate cement through carbonation curing

Case Studies in Construction Materials
The hydration of calcium aluminate cement (CAC) generates metastable phases such as CAH10 and C2AH8, which subsequently transform into more stable products, leading to a reduction in strength and causing volumetric instability.
Huaqiang Sun, Changfan Cai, Tianzhu Lin, Jingzhen Huang, Shusen Zhuang, Congcong Ma   +5 more
doaj   +1 more source