CAJ | 학술논문

采用Hummers法和超声剥离制备了氧化石墨烯（GO）纳米片层分散液，再与萘系减水剂（NS）复合得到NS／GO复合材料．研究了NS／GO复合材料对水泥净浆流动性和水泥石抗压耐折强度的影响．研究结果表明，当NS／GO的掺量为4．8g／0．06g（每100g水泥）时，净浆流动度可以达到204mm ，所得水泥石的抗压强度为65．4 MPa，且耐折强度达到10．6 MPa，分别比对照样品提高了29．3％和41．4％．SEM 形貌结果表明，GO能够促使水泥水化反应形成致密的片层状结构．这些结果对于提高混凝土的抗压耐折强度，以及抗裂性和耐久性等具有重要的意义。
채용Hummers법화초성박리제비료양화석묵희（GO）납미편층분산액，재여내계감수제（NS）복합득도NS／GO복합재료．연구료NS／GO복합재료대수니정장류동성화수니석항압내절강도적영향．연구결과표명，당NS／GO적참량위4．8g／0．06g（매100g수니）시，정장류동도가이체도204mm ，소득수니석적항압강도위65．4 MPa，차내절강도체도10．6 MPa，분별비대조양품제고료29．3％화41．4％．SEM 형모결과표명，GO능구촉사수니수화반응형성치밀적편층상결구．저사결과대우제고혼응토적항압내절강도，이급항렬성화내구성등구유중요적의의。
Graphite oxide nanosheets dispersion liquid was prepared by Hummers method and ultrasonic exfoliation .Then naphthalene superplasticizer (NS)/graphene oxide (GO) com-posite was achieved by mixing of naphthalene superplasticizer and GO .The effects of NS/GO composite on the fluidity of fresh cement paste and compressive and flexural strength of hardened cement paste were investigated .The results indicated that the fluidity of cement paste could reach 204 mm and compressive and flexural strength could reach 65 .4 MPa and 10 .6 M Pa w hen dosage of 4 .8 g/0 .06 g (100 g cement ) in the composite ,w hich increased 29 .3% and 41 .4% than control sample .SEM images showed that GO could promot the ce-ment hydration reaction to produce a dense structure .The results are important for impro-ving the strength and crack resistance and durability .