%0 Journal Article
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%D 2015
%R 10.15961/j.jsuese.2015.04.010
%X ÖÐÎÄÕªÒª: ÎªÑÐ¾¿»ÆºÓÌØÏ¸É°ËÜÐÔ»ìÄýÍÁÉøÍ¸ÐÔÄÜ£¬Í¨¹ýÏà¶ÔÉøÍ¸ÐÔÊÔÑé£¬Ì½ÌÖÁË»ÆºÓÌØÏ¸É°È¡´úÂÊ£¨ R£©¡¢Ë®»Ò±È£¨ W/C£©¡¢ð¤ÍÁÕ¼½ºÄý²ÄÁÏµÄÖÊÁ¿±È£¨ c 1£©ºÍË®ÄàÕ¼½ºÄý²ÄÁÏµÄÖÊÁ¿±È£¨ c 2£©µÈÒòËØ¸Ä±äÊ±»ÆºÓÌØÏ¸É°ËÜÐÔ»ìÄýÍÁÏà¶ÔÉøÍ¸ÏµÊý£¨ K r£©µÄ±ä»¯¹æÂÉ£¬²¢ÔÚ·ÖÎöÊÔÑé½á¹ûµÄ»ù´¡ÉÏ½¨Á¢ÁË¶àÒòËØÓ°ÏìÏÂ K rµÄ¼ÆËãÄ£Ê½¡£½á¹û±íÃ÷£º R¶Ô»ÆºÓÌØÏ¸É°ËÜÐÔ»ìÄýÍÁÏ¸¹ÇÁÏ¿ÅÁ£¼¶ÅäÓ°ÏìÏÔÖø£¬½ø¶øÓ°Ïì K r£»Ëæ×Å RÔö¼Ó£¬ K r³Ê¼õÐ¡Ç÷ÊÆ£¬ R=25%ÊÇ¿¹ÉøÐÔÄÜÏÔÖø±ä»¯µÄ½çµã£¬ R=50%Îª×î¼ÑÈ¡´úÂÊ£» W/ CÏÔÖøÓ°Ïì¿¹ÉøÐÔÄÜ£¬Ëæ×Å W/ CÔö¼Ó£¬ K rÖð½¥Ôö¼Ó£»ð¤ÍÁ¼°Ë®Äà²ôÁ¿¾ù¶Ô K rÓÐÓ°Ïì£¬ K rËæ£¨ c 1£©¡¢£¨ c 2£©Ôö¼õ±ä»¯¹æÂÉ²»¾¡ÏàÍ¬¡£&lt;/br&gt;Abstract:Through£–the£–relative£–permeability£–test£–on£–the£–truncated£–cone£–specimens£–of£–yellow£–river£–superfine£–sand£–plastic£–concrete£–(YRSSPC),£–effects£–of£–influencing£–factors£–including£–the£–replacement£–rate£–superfine£–sand£–( R),water cement£–ratio£–( W/C),ª«the£–percentage£–of£–clay£–in£–the£–cementitious£–material£–( c 1)£–and£–the£–percentage£–of£–cement£–in£–the£–cementitious£–material£–( c 2)£–upon£–the£–relative£–permeability£–coefficient£–of£–YRSSPC£–( K r)£–were£–studied.Based£–on£–the£–experimental£–results,a£–computational£–model£–was£–proposed£–to£–calculate£– K rª§of£–YRSSPC.The£–results£–showed£–that£– R£–has£–significant£–effect£–on£–the£–grain£–composition£–of£–fine£–aggregate,and£–then£–it£–has£–effect£–onª§ K r. K r£–tends£–to£–decrease£–as R£–increases.When£– Rª«is£–over£–25%,the£–permeability£–of£–YRSSPC£–is£–changed£–significantly,so£–25%£–is£–the£–critical£–point.The£–best£– R£–is£–50%. W/C£–has£–significant£–effect£–on£– K r. K r£–increases£–with the increase of£– W/C.The£–clay£–content£–and£–the£–cement£–content£–have£–effects£–on£– K r. K r decreases£–first,and£–then£–increases£–with the decrease of c 1. K rª§decreases£–with the increase of c 2.ªª
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%K replacement£–rate£–superfine£–sand water-cement£–ratio clay£–content cement£–content relative£–permeability£–coefficient plastic£–concrete
%U http://jsuese.ijournals.cn/jsuese_cn/ch/reader/view_abstract.aspx?file_no=201401215&flag=1