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A platform for research: civil engineering, architecture and urbanism
Reactivity and performance of blastfurnace slags of differing origin
AbstractThe performance of an Algerian blastfurnace slag has been assessed by examining the parameters influencing reactivity in a comparative study of two slags from different origins. These parameters include chemical composition, glass content, particle size distribution, heat of hydration and microstructural development. Three cement paste systems were investigated; OPC as a control, and two blended cements; 50% OPC-50% Algerian slag and 50% OPC-50% UK slag. All samples were made with a water/binder ratio of 0.4 and cured at 20°C for up to 90days. The specimens were tested using calorimetry, thermogravimetry, X-ray diffraction, selective dissolution, back-scattered electron microscopy and compressive strength. The chemical composition of the slag has a profound influence on strength development. The heat evolved appears to be proportional to the strength development and may be used as an important indicator of the reactivity of slag. A relationship was established between the amount of calcium silicate hydrate formed and compressive strength.
Reactivity and performance of blastfurnace slags of differing origin
AbstractThe performance of an Algerian blastfurnace slag has been assessed by examining the parameters influencing reactivity in a comparative study of two slags from different origins. These parameters include chemical composition, glass content, particle size distribution, heat of hydration and microstructural development. Three cement paste systems were investigated; OPC as a control, and two blended cements; 50% OPC-50% Algerian slag and 50% OPC-50% UK slag. All samples were made with a water/binder ratio of 0.4 and cured at 20°C for up to 90days. The specimens were tested using calorimetry, thermogravimetry, X-ray diffraction, selective dissolution, back-scattered electron microscopy and compressive strength. The chemical composition of the slag has a profound influence on strength development. The heat evolved appears to be proportional to the strength development and may be used as an important indicator of the reactivity of slag. A relationship was established between the amount of calcium silicate hydrate formed and compressive strength.
Reactivity and performance of blastfurnace slags of differing origin
Bougara, A. (author) / Lynsdale, C. (author) / Milestone, N.B. (author)
Cement and Concrete Composites ; 32 ; 319-324
2009-12-07
6 pages
Article (Journal)
Electronic Resource
English
Reactivity and performance of blastfurnace slags of differing origin
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