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《河口村水库1^#泄洪洞抗冲磨材料对比研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第36卷第1期人民黄河Vo1.36.No.12014年1月YELL0WRIVERJan.,2014【水利水电工程】河口村水库1#泄洪洞抗冲磨材料对比研究甘继胜,翟春明,王茹(1.河南省水利第二工程局,河南郑州450016;2.河南科源水利建设工程检测有限公司,河南郑州450003)摘要:为了优选沁河河口村水库1泄洪洞的抗冲磨混凝土方案,对比了硅粉混凝土、HF混凝土和NSF一Ⅱ混凝土的力学性能、抗冲磨性能、变形性能。结果表明:NSF一Ⅱ混凝土的黏度低、施工性能好,其28d抗压强度低于硅粉混凝土,90d二者相当,其抗冲磨强度优于硅粉混凝土,硅粉混凝土干缩率大幅减小,HF混凝土的黏度大、施工性能
2、较差,28d、90d抗压强度与硅粉混凝土相当,其抗冲磨强度与硅粉混凝土接近,在胶凝材料总量与硅粉混凝土相同时,其干缩率要比硅粉混凝土大,充分发挥其减水效果、降低胶材用量时,干缩率可能小于硅粉混凝土;NSF一Ⅱ混凝土的综合性能较优。关键词:抗冲磨;泄洪洞;HF;NSF;硅粉;河口村水库中图分类号:TV41文献标志码:Adoi:10.3969/j.issn.1000·1379.2014.01.042StudyontheAbrasionResistanceMaterialsforNo.1SpillwayTunnelofHekoucunReservoirGANji.sheng,ZHAIChun.m
3、ing,WANGRu(1.HenanNo.2HydraulicEnsineefingBureau,Zhengzhou450016,China;2.HenanKeyuanWaterResourcesDevelopmentEngineeringInspectionCo.Ltd,Zhengzhou450003,China)Abstract:Inordertoselecttheoptimalabrasion—resistantconcreteofNo.1spillwayofHekoucunReservoironQinheRiver.comparativestudyWasmadeonthemecha
4、nicalproperties,abrasion·resistantpropertiesanddeformationpropertiesofthesilicafumeconcrete,HFconcreteandNSF-I1concreteandyieldshearstressandplasticviscosityweretestedwithrheometer.TestresultsindicatethatNSF.Ⅱconcretehaslowerviscosityandgoodworkability,and28dcompressivestrengthlowerthanthatofthesi
5、licafumeconcrete,while90dcompressivestrengthofNSF—IIconcreteandsilicafumeconcretemakenomuchdiference;abrasion—resistantpropertiesofNSF.IIconcreteisbettertllanthatofthesilicafumeconcrete.thedryingshrinkagevaluereducesobviouslycomparingwithsilicafumeconcrete.HFconcretehashigherviscosityandpoorerwork
6、ability,the28dand90dcompressivestrengthandabrasion—resistantpropertiesofHFconcreteisthesameassilicafumeconcrete,thedryingshrinkageofHFcon·creteismoreobviousthanthesilicafumeconcreteonconditionthatthefixedtotalcementitiousmaterialissameasthesilicafumeconcrete.Ⅱtak-ingtheadvantageofwater—reducingeff
7、ectandreducingcementitiousmaterialcontentthedryingshrinkageofHFconcretemightbesmallerthanthesilicafumeconcrete.TheresultsindicatetIlatNSF.Ⅱconcretehavebettercomprehensiveproperties.Keywords:abrasionresistance;spi
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