C60 concrete based on thickness of mortar wrapping coarse aggregates and mix proportion design method of C60 concrete
The invention discloses C60 concrete based on the thickness of mortar wrapping coarse aggregates and a mix proportion design method of the C60 concrete. The design method comprises the following steps: 1) determining water powder ratio; 2) calculating surface area of stones in absolute volume being...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses C60 concrete based on the thickness of mortar wrapping coarse aggregates and a mix proportion design method of the C60 concrete. The design method comprises the following steps: 1) determining water powder ratio; 2) calculating surface area of stones in absolute volume being 1 m ; 3) determining the thickness of a mortar film wrapping the coarse aggregates, and calculating the use amount of stones for concrete in a single square; 4) calculating the use amount of sand for the concrete in the single square; 5) calculating the use amount of water for the concrete in thesingle square; 6) calculating the use amount of a cementing material for the concrete in the single square; 7) measuring rheological parameters of cement paste by using a rotational viscometer, and adjusting and determining the mixing amount of an additive; and 8) determining a mix proportion parameter through fitting and fine adjustment. The workability index parameters are controlled by the thickness of the surface mortar |
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