1、 cI|: 0451- 0712(2006)07- 0149- 06 ms |: TU528.042. 3 DS M : B 4T # C r ?Y王振军1, 何廷树2(1.v+ y u L i g 710064;2.y S/vy g 710055)K 1: s,| 4s 4 4 , ?; 4 4T ; 4 r HW、T ? r )(Na5P3O10) )(Na6P4O13) )(Na3PO4 H2O) _=)(Na2HPO4 2H2O)= _ )(NaH2PO42H2O)(H3PO4)。 ): x , ,、 、 , + 1440+ 1440(24h):“+ ”V U C HW,/。 F (C
2、H)2(OH)2(COOH)2)# F K )(KNaC4H4O6 6H2):i x , Y?, r 、h !、 4 r, a 151 2006 M 7 + S : 4T # C r ?YV6 4 r HWY /% HW/min 、 W( b) 0 440 610 160!0.3 630 835 202! )0.3 570 735 1650.3 1135 1435 3000.05 685 890 215$0.1 690 1090 400 0.1 1225 1480 255 F 0.2 890 1340 450 )0.1 590 990 400Y?0.1 480 670 190J8 0.05 5
3、90 895 305S =, r ( VB, ? 4 9F79v,V74 ( , r* l C 。 r B, “ 9F, A 。 r H, C , r V HW ,4 r ,h r* l # , ,nV7。s 4 Bh rT, r M aR f /, v, r , 1l, r4 , P C QV .T, , V , r 。yN,4 4 H s I n r W a、 1、 、y , 4 # HW, P H e 4 。 4 F r , P r HW= ; P 4 C HW,w rC HW,; Ps4 r,hl 1,4 r 0。 Ll, 8 f # P 4 “,4 a # 。(2) P4 4。 #
4、HA Q Ah ,y7 H rT,AFv 。7?、 4C3S Q sMYl, V iM。(3) HW1 p4 4。153 2006 M 7 + S : 4T # C r ?Y! , F| r 。 4 ,T A, F9 r 9 , P Hi。(4)YV k a 。P 4 H, Y5 r k ,9 A , F1 2 P| P r HW %, v H, .r ,/ Y#。(5) 4 P - C a k。 rF ? 4, H rL C,yN 4 P -,A C a k,Z ? P, P 4 H,+Y i。(6) 4R P。v 4 rT M7 3$,C r HW % !9 Y#, 4 P H,R ?F4
5、 P, rT。 ID:1 S . rF4M.: S/ ,2003.2 :,B , +S. 4 C r?YJ.q v,2001,23(2).3 f3 ,f . rF4 #/ M.Z: Z S/ D,1990.4 ,.V M.:Sy,1985.5 y . rF4 #M.:S9,1997.6 v,l. rF4M.:,2002.FunctionMechanism of Retarding Agent and Its Influences onProperties of Cement ConcreteWANG Zhen-jun1, HE Ting-shu2(1.Key Laboratory for Hi
6、ghway Engineering inSpecialRegionof Ministryof Education, ChanganUniversity, Xian710064, China;2. Instituteof Building Materials, XianUniversity of Architectureand Technology, Xian710055, China)Abstract: According to differentchemicalcomponents of retarding agent, the retarding agents aredivided int
7、o inorganic retarding agent and organic retarding agent; properties of their typical kindsintroduced; function mechanism of the two kinds discussed; their influences on setting time andworkability offreshconcreteand strength anddurability ofhardenedconcretestudiedandnoticeitemsinroadcementconcreteengineering using retarding agents putforward.Keywords: road engineering; retarding agent; mechanism; cementconcrete; property154 2006 M 7
