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公开(公告)号：EP0060950A1
公开(公告)日：1982-09-29
申请号：EP81304769.3
申请日：1981-10-13
发明人： Hodson, Ralph , Davies, Kenneth John , Brown, Glen John Lewis , Carroll, William , Noble, Robert
摘要： Lightweight concrete incorporating expanded polystyrene beads is made by first coating the expanded beads with an aqueous surfactant solution, which preferably contains a substantive cationic surfactant, e.g. a substituted or ethoxylated quaternary ammonium compound containing a C 10 to C, 8 alkyl substituent or an ethoxylated primary or secondary amine having a C 10 to C 18 alkyl substituent, and a non-ionic surfactant such as an ethoxylated primary or secondary alcohol or a nonylphenol - ethylene oxide condensate. The wet beads are coated with dry cement and then mixed with a further supply of cement, water and sand or aggregate to complete the concrete mix.
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公开(公告)号：EP0060950B1
公开(公告)日：1985-09-18
申请号：EP81304769.3
申请日：1981-10-13
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