| 摘要 |
<p>1. Hydraulic concrete, particularly fitted for the realization of foundations and pavements by substitution for various conventional layers of foundations and coating, of type comprising granular fillers, a cement and fly as acting as binder, this concrete being characterized by the fact it comprises a mixture, prepared extemporarily, containing for 1 000 parts (weight) of finished concrete : 100 to 200 parts (weight) of binder constituted, for 100 parts weight, by : 40 to 70 parts of Portland cement without addition selected on the group constituted by CPA 350 to 500 ; 20 to 50 parts of fly ashes ; possibly up to 15 parts of an setting activer for ashes ; and a total quantity of water comprised between 3,5 and 6 % of final concrete in weight.</p> |
