Search Results - "Bernal, Susan A."

Geopolymers and Related Alkali-Activated Materials by Provis, John L, Bernal, Susan A

“…The development of new, sustainable, low-CO 2 construction materials is essential if the global construction industry is to reduce the environmental footprint…”
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Chloride-induced corrosion of steel rebars in simulated pore solutions of alkali-activated concretes by Mundra, Shishir, Criado, Maria, Bernal, Susan A., Provis, John L.

“…The passivation and chloride-induced depassivation of steel rebars immersed in varying alkaline environments (0.80M, 1.12M and 1.36M NaOH solutions),…”
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Generalized Structural Description of Calcium–Sodium Aluminosilicate Hydrate Gels: The Cross-Linked Substituted Tobermorite Model by Myers, Rupert J, Bernal, Susan A, San Nicolas, Rackel, Provis, John L

“…Structural models for the primary strength and durability-giving reaction product in modern cements, a calcium (alumino)silicate hydrate gel, have previously…”
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Evolution of binder structure in sodium silicate-activated slag-metakaolin blends by Bernal, Susan A, Provis, John L, Rose, Volker, De Gutierrez, Ruby Mejia

“…Structural evolution in pastes produced from alkali silicate-activated granulated blast furnace slag (GBFS)/metakaolin (MK) blends is assessed. In the initial…”
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Management and valorisation of wastes through use in producing alkali-activated cement materials by Bernal, Susan A, Rodríguez, Erich D, Kirchheim, Ana Paula, Provis, John L

“…There is growing global interest in maximising the re‐use and recycling of waste, to minimise the environmental impacts associated with waste treatment and…”
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Evaluation of the potential improvement in the environmental footprint of geopolymers using waste-derived activators by Passuello, Ana, Rodríguez, Erich D., Hirt, Eduardo, Longhi, Márlon, Bernal, Susan A., Provis, John L., Kirchheim, Ana Paula

“…Geopolymers produced from an aluminosilicate precursor and an alkaline activating solution have emerged as low carbon alternative binders which can substitute…”
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The Role of Al in Cross-Linking of Alkali-Activated Slag Cements by Myers, Rupert J., Bernal, Susan A., Gehman, John D., van Deventer, Jannie S.J., Provis, John L.

“…The structural development of a calcium (sodium) aluminosilicate hydrate (C–(N‐)A–S–H) gel system, obtained through the reaction of sodium metasilicate and…”
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Influence of fly ash on the water and chloride permeability of alkali-activated slag mortars and concretes by Ismail, Idawati, Bernal, Susan A., Provis, John L., San Nicolas, Rackel, Brice, David G., Kilcullen, Adam R., Hamdan, Sinin, van Deventer, Jannie S.J.

“…•Addition of fly ash to alkali-activated slag mortars and concretes increases porosity and chloride permeability.•High-temperature pre-conditioning of samples…”
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MgO content of slag controls phase evolution and structural changes induced by accelerated carbonation in alkali-activated binders by Bernal, Susan A., San Nicolas, Rackel, Myers, Rupert J., Mejía de Gutiérrez, Ruby, Puertas, Francisca, van Deventer, Jannie S.J., Provis, John L.

“…The structural development and carbonation resistance of three silicate-activated slags (AAS) with varying MgO contents (<7.5wt.%) are reported. AAS with lower…”
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Gel nanostructure in alkali-activated binders based on slag and fly ash, and effects of accelerated carbonation by Bernal, Susan A., Provis, John L., Walkley, Brant, San Nicolas, Rackel, Gehman, John D., Brice, David G., Kilcullen, Adam R., Duxson, Peter, van Deventer, Jannie S.J.

“…Binders formed through alkali-activation of slags and fly ashes, including ‘fly ash geopolymers’, provide appealing properties as binders for low-emissions…”
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Accelerated carbonation testing of alkali-activated binders significantly underestimates service life: The role of pore solution chemistry by Bernal, Susan A., Provis, John L., Brice, David G., Kilcullen, Adam, Duxson, Peter, van Deventer, Jannie S.J.

“…The carbonation resistance of alkali-activated binders is often tested via accelerated test protocols designed for Portland cements, without questioning…”
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Effect of binder content on the performance of alkali-activated slag concretes by Bernal, Susan A., Mejía de Gutiérrez, Ruby, Pedraza, Alba L., Provis, John L., Rodriguez, Erich D., Delvasto, Silvio

“…This paper assesses the mechanical and durability performance of concretes produced using alkali silicate-activated ground granulated blast furnace slag as…”
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Influence of slag composition on the stability of steel in alkali-activated cementitious materials by Criado, Maria, Bernal, Susan A., Garcia-Triñanes, Pablo, Provis, John L.

“…Among the minor elements found in metallurgical slags, sulfur and manganese can potentially influence the corrosion process of steel embedded in…”
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Corrosion of steel bars induced by accelerated carbonation in low and high calcium fly ash geopolymer concretes by Sufian Badar, Md, Kupwade-Patil, Kunal, Bernal, Susan A., Provis, John L., Allouche, Erez N.

“…•Ca content influences the durability of class F fly ash geopolymer concretes.•Low-Ca class F fly ash geopolymer concrete is suitable for structural…”
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Drying-induced changes in the structure of alkali-activated pastes by Ismail, Idawati, Bernal, Susan A., Provis, John L., Hamdan, Sinin, van Deventer, Jannie S. J.

“…Drying of cement paste, mortar, or concrete specimens is usually required as a pre-conditioning step prior to the determination of permeability-related…”
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Effect of nanosilica-based activators on the performance of an alkali-activated fly ash binder by Rodríguez, Erich D., Bernal, Susan A., Provis, John L., Paya, Jordi, Monzo, José M., Borrachero, María Victoria

“…This paper assesses the effect of the use of an alternative activator based on nanosilica/MOH (M=K+ or Na+) blended solutions on the performance of…”
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Characterization of supplementary cementitious materials by thermal analysis by Bernal, Susan A., Juenger, Maria C. G., Ke, Xinyuan, Matthes, Winnie, Lothenbach, Barbara, De Belie, Nele, Provis, John L.

“…Working Group 1 of RILEM TC 238-SCM ‘Hydration and microstructure of concrete with supplementary cementitious materials (SCMs)’ is defining best practices for…”
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Outcomes of the RILEM round robin on degree of reaction of slag and fly ash in blended cements by Durdziński, Paweł T., Ben Haha, Mohsen, Bernal, Susan A., De Belie, Nele, Gruyaert, Elke, Lothenbach, Barbara, Menéndez Méndez, Esperanza, Provis, John L., Schöler, Axel, Stabler, Christopher, Tan, Zhijun, Villagrán Zaccardi, Yury, Vollpracht, Anya, Winnefeld, Frank, Zając, Maciej, Scrivener, Karen L.

“…Working group 2 of the RILEM TC 238-SCM undertook a comparison of laboratories and techniques for the quantification of the degree of reaction of supplementary…”
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Determination of particle size, surface area, and shape of supplementary cementitious materials by different techniques by Arvaniti, Eleni C., Juenger, Maria C. G., Bernal, Susan A., Duchesne, Josée, Courard, Luc, Leroy, Sophie, Provis, John L., Klemm, Agnieszka, De Belie, Nele

“…The particle size distribution, surface area and shape are fundamental characteristics of supplementary cementitious materials (SCMs). Accurate measurement of…”
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RILEM TC 247-DTA round robin test: carbonation and chloride penetration testing of alkali-activated concretes by Gluth, Gregor J. G., Arbi, Kamel, Bernal, Susan A., Bondar, Dali, Castel, Arnaud, Chithiraputhiran, Sundararaman, Dehghan, Alireza, Dombrowski-Daube, Katja, Dubey, Ashish, Ducman, Vilma, Peterson, Karl, Pipilikaki, Penny, Valcke, Siska L. A., Ye, Guang, Zuo, Yibing, Provis, John L.

“…Many standardised durability testing methods have been developed for Portland cement-based concretes, but require validation to determine whether they are also…”
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