Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Use of Portland PFA cement in combination with superplasticizing admixtures
The results of a test programme undertaken to achieve parity between concretes made with Portland cement (PC, Class 42.5 N) to BS 12 and Portland pulverized-fuel ash cement (PPFAC) to BS 6588 at equivalent cement content, by controlling the water content of the mix and the use of a superplasticizing admixture are described. With 27% PFA as a Constituent of the cement, parity at 28 days was achieved at water contents of between 145 and 160 kg/m3, depending on the cement content. A mix design chart is developed from the data to illustrate how the water and PPFAC contents of concrete can be adjusted to achieve a particular design strength. Issues relating to practical aspects of use are also considered.
Use of Portland PFA cement in combination with superplasticizing admixtures
The results of a test programme undertaken to achieve parity between concretes made with Portland cement (PC, Class 42.5 N) to BS 12 and Portland pulverized-fuel ash cement (PPFAC) to BS 6588 at equivalent cement content, by controlling the water content of the mix and the use of a superplasticizing admixture are described. With 27% PFA as a Constituent of the cement, parity at 28 days was achieved at water contents of between 145 and 160 kg/m3, depending on the cement content. A mix design chart is developed from the data to illustrate how the water and PPFAC contents of concrete can be adjusted to achieve a particular design strength. Issues relating to practical aspects of use are also considered.
Use of Portland PFA cement in combination with superplasticizing admixtures
Dhir, R.K. (Autor:in) / Zhu, W.Z. (Autor:in) / McCarthy, M.J. (Autor:in)
Cement and Concrete Research ; 28 ; 1209-1216
1998
8 Seiten, 19 Quellen
Aufsatz (Zeitschrift)
Englisch
Use of Portland PFA Cement in Combination with Superplasticizing Admixtures
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Use of Portland PFA Cement in Combination with Superplasticizing Admixtures
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