CAJ | 학술논문

通过氧化反应和超声波分散作用制备了不同含氧量氧化石墨烯(GO)纳米分散液，研究了 GO 氧含量、用量和水化时间对水泥基复合材料微观结构和力学性能的影响。研究结果表明GO 能够调控水泥水化产物的形状，促使水泥水化反应形成规整的花状晶体，使得水泥基复合材料的强度特别是拉伸强度和抗折强度显著提高。研究结果证实了GO 在水泥复合材料水化过程中起到模板作用，能够调控水泥水化产物的微观结构及提高水泥基复合材料的韧性，同时提出了GO 调控水泥基复合材料微观结构的作用机理。本文结果提供了一种可显著增强增韧水泥基复合材料的新方法，具有潜在的应用前景。
통과양화반응화초성파분산작용제비료불동함양량양화석묵희(GO)납미분산액，연구료 GO 양함량、용량화수화시간대수니기복합재료미관결구화역학성능적영향。연구결과표명GO 능구조공수니수화산물적형상，촉사수니수화반응형성규정적화상정체，사득수니기복합재료적강도특별시랍신강도화항절강도현저제고。연구결과증실료GO 재수니복합재료수화과정중기도모판작용，능구조공수니수화산물적미관결구급제고수니기복합재료적인성，동시제출료GO 조공수니기복합재료미관결구적작용궤리。본문결과제공료일충가현저증강증인수니기복합재료적신방법，구유잠재적응용전경。
Graphene oxides (GO)with different oxygen content were prepared by oxidization and ultrasonic dis-persion.The effect of oxygen content and dosage of GO and hydration time on microstructure and mechanical properties of cement composites were investigated.The results indicated that GO can regulate formation of flower-like hydration crystals and increase remarkably the tensile and folding strength of the corresponding ce-ment composites.The results suggested that GO has template role in forming cement hydration crystals,which can regulate the microstructure of cement hydration products and improve toughness of cement composites.A possible mechanism of GO mediated formation of flower-like crystals was also presented in this paper.The re-search result provides a new pathway to significantly improving the toughness of hardened cement paste and has significant practical applications.