混凝土结构劣化原因分析

(1.252000;2.250014)::;;:U415.1:B()11.1(Ca(OH),,pH13):(1)CO:Ca(OH):CaCO,pH8.5pH11.5pH10Ca(OH):SO,,S0,,H,SpH(2)():;:2006-04-12:(1969-)1.2FeeOHFee'Fe(OH),1.3CO:;70%1.4()()22.12.1.12-3mm2.1.29%41:2.22.2.1(1);(2);(3);(4);(5);(6)2.2.22.3Ca(OH):2.3.1:C02+H2O---oH,CO,Ca(OH)2+CO:-oCaCO,+H,OCaC0,+H2CO,-oCa(HCO,)22.3.2()Ca(OH):2.3.3Ca(OH):CaC0,2.4:Ca(OH):pH11.5;Ca(OH)22.5Ca(OH)::Ca(OH)2+Mgso;-CaSO,+Mg(OH):Ca(OH)2+MgCl,-+CaCl2+Mg(OH)2Ca(OH)22.62.6.1C3A(3CaOA11033CaSO,31H20)2.6.2200mg/L2.7Ca(OH):2.7.1Ca(OH)::Ca(OH)Z+2NaC1--+CaC12+2NaOH2.7.2;422.8;;2.9NaOHKOHNa,CO,K,CO,NatCO,10H,OK,CO,15H,O2.10(K,O,Na,O);;20062(1);(2):()()()(3)Ca(OH):C,AC,AC's(4)(6):[1].M].:2001.[2].[M].:2004.[3.[M].:2004.[4].M].:2004.[5].M].:2004.