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C60 high performance concrete prepared from manufactured sand with a high content of microfines
The workability, strength and modulus of elasticity, drying shrinkage and creep, and chloride ion permeability as well as freeze-thaw resistance of the C60 HPCs (high Performance concretes) with MS (manufactured sand) containing crushed limestone dust in percents ranging from 3.5 % to 14 % were experimentally investigated The lesults were compared with those of RS (river sand) concrete. In addition, the effect of clay amounts at 3 % and 5 % in MS on properties of C60 HPCs was also investigated. The results showed that excect for the creep, the other performances of C60 MS-HPCs with crushed limestone dust content of 7 % to 10.5 % were excellent or compared favorably with those of C60 RS-HPCs. The increment of clay content in MS obviously decreased workability, increased dry shrinkage and accelerated freeze-thaw destruction of C60 MS-HPCs, but didn't affect compressive strength and chloride ion permeability of the concrete. It was concluded that C60 HPC can be made with MS with a high content of crushed limestone dust but the amount of clay in MS should be controlled to a low limit.
C60 high performance concrete prepared from manufactured sand with a high content of microfines
The workability, strength and modulus of elasticity, drying shrinkage and creep, and chloride ion permeability as well as freeze-thaw resistance of the C60 HPCs (high Performance concretes) with MS (manufactured sand) containing crushed limestone dust in percents ranging from 3.5 % to 14 % were experimentally investigated The lesults were compared with those of RS (river sand) concrete. In addition, the effect of clay amounts at 3 % and 5 % in MS on properties of C60 HPCs was also investigated. The results showed that excect for the creep, the other performances of C60 MS-HPCs with crushed limestone dust content of 7 % to 10.5 % were excellent or compared favorably with those of C60 RS-HPCs. The increment of clay content in MS obviously decreased workability, increased dry shrinkage and accelerated freeze-thaw destruction of C60 MS-HPCs, but didn't affect compressive strength and chloride ion permeability of the concrete. It was concluded that C60 HPC can be made with MS with a high content of crushed limestone dust but the amount of clay in MS should be controlled to a low limit.
C60 high performance concrete prepared from manufactured sand with a high content of microfines
Herstellung von C60 Hochleistungsbeton mit aufbereitetem Sand und einem hohen Gehalt einen mikrofeinen Zuschlagstoffen
Li, Bei-Xing (author) / Wang, Ji-Liang (author) / Zhou, Ming-Kai (author)
2009
8 Seiten, 1 Bild, 7 Tabellen, 10 Quellen
Conference paper
English
feines Pulver , Additiv , Hochleistungsbeton , Verarbeitungseigenschaft , Elastizitätsmodul , Schrumpfung , Kriechen (Werkstoff) , Chlorbeständigkeit , Frostbeständigkeit , Frost-Tau-Test , Kalkstein , Sand , Sandaufbereitung , Ton (Mineral) , Flugasche , Flugaschenzement , Schlacke , Schlackenzement , Druckfestigkeit , Trockenschwindung
C60 High Performance Concrete Prepared from Manufactured Sand with a High Content of Microfines
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