发明名称 |
FORMULATION AND USE OF A LIGHTWEIGHT STRUCTURAL CONCRETE AND METHOD OF OBTAINING IT |
摘要 |
<p>The invention relates to a lightweight structural concrete comprising at least: a hydraulic binder; effective water; a superplasticizer; and aggregates, said concrete having a density in the fresh state varying from 1.40 to a value Dmax calculated from the formula (I)Dmax = 1.58 + (a ´ MA) in which a represents a coefficient equal to 1, advantageously equal to 0.9 and preferably equal to 0.8 and MA represents the percentage by weight of amorphous matter contained in 1 m3 of fresh concrete; said concrete having a maximum density in the fresh state Dmax equal to or less than 1.85, advantageously equal to or less than 1.8 and preferably equal to or less than 1.7; said concrete having an Eeff/L ratio varying from 0.19 to 0.46, where Eeff represents the effective amount of water in kilograms per cubic metre of fresh concrete and L represents the amount of cement and additions in kilograms per cubic metre of fresh concrete; said concrete comprising an effective amount of water varying from 100 to 230 litres per cubic metre of fresh concrete; said concrete comprising an amount of Portland clinker equal to or greater than 150 kilograms per cubic metre of fresh concrete; said concrete comprising an amount of (Portland clinker + optional additions + optional silica fumes + optional calcined schists + optional calcined clays) equal to or greater than 300 kilograms per cubic metre of fresh concrete; and said concrete having a slurry volume equal to or greater than 300 l/m3 of fresh concrete. The invention also describes a method of producing such a concrete, the use of said concrete as building material, and a cured concrete object obtained from such a concrete.</p> |
申请公布号 |
WO2009083809(A4) |
申请公布日期 |
2009.12.30 |
申请号 |
WO2008IB03988 |
申请日期 |
2008.10.10 |
申请人 |
LAFARGE;MEILLE, SYLVAIN;BONNET, EMMANUEL;CHANVILLARD, GILLES;SCHWARTZENTRUBER, ARNAUD |
发明人 |
MEILLE, SYLVAIN;BONNET, EMMANUEL;CHANVILLARD, GILLES;SCHWARTZENTRUBER, ARNAUD |
分类号 |
C04B28/02;C04B28/04 |
主分类号 |
C04B28/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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