发明名称 |
MOLDED CONCRETE PAVING MADE OF RECLAIMED WASTE CONCRETE |
摘要 |
<p>PROBLEM TO BE SOLVED: To provide a porous road paving with excellent permeability and water retentivity as a concrete molding using only waste concrete or the like as aggregate for the purpose of reclaiming a large amount of waste concrete produced in a large amount. SOLUTION: Cement of not less than 17 wt.% (in dry weight) nor more than 20 wt.% (in dry weight) is added to waste concrete grains obtained by crushing waste concrete, in which the content of grains with grain sizes of not more than 0.3 mm are 5 wt.% or less and the content of grains with grain sizes of 5 mm or more are 3 wt.% or less. Water of not less than 15% nor more than 25% is added to the weight of these solids and both high vibration and high compression are used to obtain a molding through an immediate demolding process. Thereafter, the molding is cured in a steam-saturated atmosphere for 24 hours or more. The molded concrete paving or a road boundary block is obtained having a permeability of 1.05×10<-2> cm/sec or more and being excellent in bending strength, compression strength and water retentivity.</p> |
申请公布号 |
JP2003041509(A) |
申请公布日期 |
2003.02.13 |
申请号 |
JP20010228791 |
申请日期 |
2001.07.27 |
申请人 |
EG CORPORATION:KK;EG JUNKAN KENKYUSHO:KK |
发明人 |
ECHIGO JUNICHI;ECHIGO KENICHI |
分类号 |
E01C5/06;(IPC1-7):E01C5/06 |
主分类号 |
E01C5/06 |
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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