Investigation of hydraulic activity of ground granulated blast furnace slag in concrete

Pal, Sarvesh; Mukherjee, Abhijit; Pathak, Santanu

doi:10.1016/s0008-8846(03)00062-0

Cited by 351 publications

(136 citation statements)

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“…No direct relationship between reactivity and vitreous phase content has been proven, however. Hence, while some authors (49) deem that the vitreous phase content should be over 90% for slag activation to be highly effective, others (50) conclude that slag with a low vitreous content (30 to 65%) may be suitable for these purposes. In any event, slag reactivity is largely described by a parameter known as degree of polymerisation (DP, see Eq.…”

Section: Fundamentals Of Alkaline Activation In Calcium-rich Systems:mentioning

confidence: 99%

A review on alkaline activation: new analytical perspectives

et al. 2014

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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.

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Section: Fundamentals Of Alkaline Activation In Calcium-rich Systems:mentioning

confidence: 99%

A review on alkaline activation: new analytical perspectives

et al. 2014

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“…The hydraulic activity of the GGBFS was evaluated by the chemical indexes recommended by different standards, as well as those developed in literature [18,19] (Table 3). Among the calculated indexes for the slag used, three indexes are out of the recommended values.…”

Section: Hydraulic Activity Of Slagmentioning

confidence: 99%

Durability of mortar and concretes containing slag with low hydraulic activity

Hadjsadok

Kenaï

Courard

et al. 2012

Cement and Concrete Composites

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a b s t r a c tGranulated blast furnace slag has been widely used as a partial substitute for Portland cement in many applications because of advantages which include cost reduction, reduction in heat evolution and improvement of durability properties. However, the effectiveness of slag depends on its hydraulic reactivity. In this paper, the results of an experimental study on the effect of slag with low hydraulicity on the mechanical and durability properties of concrete and the performance of mortar under sulfate attack are discussed. Special attention is given to gas permeability and water absorption of slag concrete. The durability of slag concrete is improved at long term at low Water/Binder ratio. Sulfate resistance of mortar is improved by slag replacement up to 30%.

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“…Pal et al [10] investigated the relationship between the hydraulic index (HI) of slag and the influencing factors of slag, including glass content, fineness, and chemical composition. Zhao et al [11] studied the particle characteristics and hydration activity of GGBFS containing industrial crude glycerol-based milling aids.…”

Section: Introductionmentioning

confidence: 99%

Influences of Ultrafine Slag Slurry Prepared by Wet Ball Milling on the Properties of Concrete

Dai

et al. 2018

Advances in Materials Science and Engineering

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e application of ultrafine ground-granulated blast-furnace slag (GGBFS) in concrete becomes widely used for high performance and environmental sustainability. e form of ultrafine slag (UFS) used in concrete is powder for convenience of transport and store. Drying-grinding-drying processes are needed before the application for wet emission. is paper aims at exploring the performances of concrete blended with GGBFS in form of slurry. e ultrafine slag slurry (UFSS) was obtained by the process of grinding the original slag in a wet ball mill, which was mixed in concrete directly. e durations of grinding were 20 min, 40 min, and 60 min which were used to replace Portland cement with different percentages, namely, 20, 35, and 50, and were designed to compare cement with original slag concrete. e workability was investigated in terms of fluidity. Microstructure and pore structure were evaluated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and mercury intrusion porosimetry (MIP). e fluidity of concrete mixed with UFSS is deteriorated slightly. e microstructure and early strength were obviously improved with the grind duration extended.

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Investigation of hydraulic activity of ground granulated blast furnace slag in concrete

Cited by 351 publications

References 1 publication

A review on alkaline activation: new analytical perspectives

A review on alkaline activation: new analytical perspectives

Durability of mortar and concretes containing slag with low hydraulic activity

Influences of Ultrafine Slag Slurry Prepared by Wet Ball Milling on the Properties of Concrete

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