论碱矿渣水泥及混凝土的缓凝问题及缓凝方法

(630045);,;,,,TQ528.0421,,[1][2]:1):,60150MPa,68MPa,,100%200%(28)2):,17%22%,,,3):3.64.0MPa,4.0MPa,4):1/21/3,,5):1%2%MgSO4,PH=2(),,,30011506):,,,7):,-15:1996-01-09.,1965,.183Vol.18No.319969JournalofChongqingJianzhuUniversitySep.19966818,,,,,,,,,,,,,,,,1988,22,40MPa[3],,,,,,,,,2R2O-MO-Me2O3-H2O,,,,,,,:;;,,,,,,,;,,GB17592;,,,,,,,515min,,,,,1989(TY67-1020-89,198945):,30min,12h;,20min,12h,,3,,,:3.1(min)5101520A0-403-005-5-B0-150-350-452-30C0-100-200-301-202(-)[4](min)67101218224250526214020048525660120140:S=330m2/kg;/=0.27.3.1.1,801002h,(1),,3.1.2,:,4,,3.1.3(2),,,,,,,,3.2,(1),,,,310.1-74,,,,,,,,B.D.TVYXOBCKUU1[4]3:693[4]7018(min)02431-110.062939-100.06455401520-110.064553-100.06405301723-110.069099-100.065470101114,(3),OCT,,41986,,,,,,:,,,,;,,,YP-3,22h(4),(5),,YP-3,(6),,YP-3,,,,:,S=580m2/kg,T=290KYP-3(%)03.503.754.004.254.50(-)0-141-472-495-309-1521-47(-)0-212-163-387-4515-2029-054YP-3[5]5YP-3(MPa)[5](%)()3728073.9/1.0074.8/1.0090.3/1.00YP-34.063.1/0.8572.2/0.9692.7/1.036.059.2/0.8068.4/0.9188.8/0.9855.1,,,,,5.2,(),,5.3,,,;,,,,,3:71:,;(%)(mm)(MPa)3d7d28d1016073.377.582.323.7512min16060.573.185.233.751h16062.877.182.843.752h16064.472.785.56YP-3[6]1.(JK)().,19872.(JK)().,19913V.Glukhovskij,Slaq-AlkalineCementsandConcrete-Structure,Properities,TechnoloqicalandEconomicalAspectsoftheUse.SilicatesIndustrels,1983,104....19815..,1990,126..1994,37218(:)AReviewofSet-retardingandRetardingMeasuresofAlkali-slagCementandConcreteYangChang-huiPuXin-cheng(Dept.ofMaterialsScienceandEngineering,ChongqingJianzhuUniversity)AbstractInthispaper,theinfluenceofset-retardingonapplicationsofalkali-slagce2mentandconcreteisanalysed.Setcharacterofalkali-slagcementandsuitabilityofmea2suresusedathomeandabtordarediscussed.Onthebasisofabovementioned,itisproposedthattheonlywaytosolvethefast-setproblemofalkali-slagcementisbyincorporatingeffi2cientretarders,andresearchesonmechanismofretardersalongwithdevelopingnewcompos2iteretardersarethemostimportanttopicsintheresearchfieldofalkali-slagcementandcon2crete.KeyWordsalkali-slagcement,retarder,settingtime,initialset