Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance of metakaolin and Portland cements in ettringite formation as determined by ASTM C 452-68: Kinetic and morphological differences
The performance of metakaolin and portland cement in ettringite formation determined by ASTM C 452-68 was analyzed. ASTM C 452-68 testing was conducted on 40 cements, 10 portland cements-6 OPC and 4 SRPC and 30 blended cements containing 20%, 30% and 40% metakaolin. ASTM C 452-68 specimens were manufactured with all cements, and the daily length growth rate was calculated by dividing the measured increase in length, by the number of days lapsing since the preceding measurement. The results showed that in ASTM C 452-68, the pozzolanic reactions involving the reactive alumina present in pozzolans took place during the first 28 days of age, and ettringite from both reactive alumina and C3 were the reaction products in all cases.
Performance of metakaolin and Portland cements in ettringite formation as determined by ASTM C 452-68: Kinetic and morphological differences
The performance of metakaolin and portland cement in ettringite formation determined by ASTM C 452-68 was analyzed. ASTM C 452-68 testing was conducted on 40 cements, 10 portland cements-6 OPC and 4 SRPC and 30 blended cements containing 20%, 30% and 40% metakaolin. ASTM C 452-68 specimens were manufactured with all cements, and the daily length growth rate was calculated by dividing the measured increase in length, by the number of days lapsing since the preceding measurement. The results showed that in ASTM C 452-68, the pozzolanic reactions involving the reactive alumina present in pozzolans took place during the first 28 days of age, and ettringite from both reactive alumina and C3 were the reaction products in all cases.
Performance of metakaolin and Portland cements in ettringite formation as determined by ASTM C 452-68: Kinetic and morphological differences
Talero, Rafael (Autor:in)
Cement and Concrete Research ; 35 ; 1269-1284
2005
16 Seiten, 88 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2005
Initial hydration reactions and mechanisms of delayed ettringite formation in Portland cements
| Online Contents | 1996