Railway sleepers made of alkali activated fly ash concrete

Palomo, A.; Jiménez, Ana Fernández; Hombrados, Cecilio López; Lleyda, José Luis

doi:10.4067/s0718-50732007000200001

Cited by 63 publications

(33 citation statements)

References 6 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many years of practical experience have been acquired by the pioneering Kiev school, while others (the Spanish (114) and Australian (116) schools in particular) have also gained a good deal of hands-on experience. More recent contributions have likewise been forthcoming from academic institutions scattered around the world and private companies such as Zeobond and Ceratech, which have clearly placed their stakes on alkaline activation-based innovation.…”

Section: The Industry and Alkaline Cements Brief Considerations On Cmentioning

confidence: 99%

“…The efficiency and potential of these cements have been amply proven by the exhaustive research conducted in the interim in countries such as Russia, Ukraine, Poland, Finland, Japan, China, United States, Canada, India, Australia, Spain, United Kingdom and many others (108)(109)(110)(111)(112)(113)(114)(115).…”

Section: The Industry and Alkaline Cements Brief Considerations On Cmentioning

confidence: 99%

See 1 more Smart Citation

A review on alkaline activation: new analytical perspectives

et al. 2014

View full text Add to dashboard Cite

For many years now the idea of including alkalis in a Portland cement matrix has been regarded as a daft or inexcusably erroneous proposition: despite its absurdity, that opinion has been widely accepted as a basic premise by the scientific and technical community working in the area of the chemistry of cement. In 1957 Glukhovsky proposed a working hypothesis in which he established a close relationship between alkalis and cementitious materials. That hypothesis has become consolidated and has served as a basis for developing a new type of binders, initially called "alkaline cements". The present paper reviews the most significant theoretical interpretations of the role played by alkalis in the formation of the "stony" structure of cement. It ends with a broad overview of the versatility of this type of materials for industrial applications and a discussion of the possibility of building on the existing legislation to meet the need for the future regulation of alkaline cement and concrete manufacture. RESUMEN: Activación alcalina: Revisión y nuevas perspectivas de análisis.Hace algunos años, la sola idea de la presencia de álcalis en una matriz de cemento Portland se consideraba casi como una aberración, o como un error imperdonable; convirtiéndose en un postulado básico (absurdo) ampliamente aceptado por la comunidad científica y técnica vinculada a la química de los cementos. En 1957 Glukhovsky propuso una hipótesis en la que se establecía una estrecha relación entre los álcalis y los materiales cementantes. Hoy día nadie duda de que dicha hipótesis ha servido de base para el desarrollo de una nueva clase de materiales cementantes: "cementos alcalinos". En el presente trabajo se hace una revisión sobre los aspectos teóricos más relevantes del papel de los álcalis en la formación de estos conglomerantes. También se da una visión genérica de su versatilidad, desarrollo industrial y estado de la normativa actual para regular en el futuro la fabricación de cementos y hormigones alcalinos.

show abstract

Section: The Industry and Alkaline Cements Brief Considerations On Cmentioning

confidence: 99%

Section: The Industry and Alkaline Cements Brief Considerations On Cmentioning

confidence: 99%

A review on alkaline activation: new analytical perspectives

et al. 2014

View full text Add to dashboard Cite

show abstract

“…This consumes huge amounts of energy, in particular, arising from the calcination of raw materials at around 1500 o C and the grinding of raw materials, cement clinker and gypsum [1]. The energy demand associated with Portland cement (PC) production is about 1700-1800 MJ/tonne clinker [2], which is the third largest use of energy, after that of the aluminium and steel manufacturing industries [3]. In addition, nearly 0.85 tonnes of CO 2 are released to the atmosphere per tonne of PC clinker produced.…”

Section: -Introductionmentioning

confidence: 99%

Hydration and properties of sodium sulfate activated slag

Rashad

Bai

Basheer

et al. 2013

Cement and Concrete Composites

258

103

View full text Add to dashboard Cite

“…El Ca es un elemento minoritario en las cenizas tipo F usadas en los nuevos hormigones alcalinos. No obstante, nuestra propia experiencia nos ha demostrado que los aditivos de naturaleza sulfonada pueden tener efectos positivos en estos sistemas (27,28).…”

Section: Liquid / Binder Ratiounclassified

“…Yet Ca is a minority element in the F type ash used in new alkaline concrete. Nonetheless, the authors' own experience has shown that sulphonated admixtures many have beneficial effects on such systems (27,28).…”

Section: Liquid / Binder Ratiomentioning

confidence: 99%