发明名称 |
DUST REDUCTION AGENT FOR WET SPRAY CONCRETE, AND WET SPRAY CONCRETE |
摘要 |
<P>PROBLEM TO BE SOLVED: To always obtain dust reduction effects at a certain high level by suppressing the change with time of the flowability of concrete after mixing, and thereby stabilizing spray conditions for a dust reduction agent for wet spray concrete. <P>SOLUTION: The dust reduction agent for the wet spray concrete contains a water-soluble cellulose ether and a polyethylene oxide. The dust reduction agent is characterized in that a particulate polyethylene oxide containing particles having particle diameters of ≤150 μm in an amount of ≥70 wt.%, preferably particles having particle diameters of ≤250 μm in an amount of ≥90 wt.% is used. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
申请公布号 |
JP2004189529(A) |
申请公布日期 |
2004.07.08 |
申请号 |
JP20020358761 |
申请日期 |
2002.12.10 |
申请人 |
DAI ICHI KOGYO SEIYAKU CO LTD |
发明人 |
HORI YUJI;HAYASHI TAKAYUKI |
分类号 |
E21D11/10;C04B24/32;C04B24/38;C04B28/02;C04B103/00;C04B103/44 |
主分类号 |
E21D11/10 |
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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