Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites

Abstract Graphene oxides (GOs) nanosheets were prepared by oxidization and ultrasonic dispersion. Effects of GO nanosheets on microstructure and mechanical properties of cement composites were investigated by observing shape changes of cement hydration crystals and testing mechanical strength. The results indicated that GO nanosheets can regulate formation of flower-like crystals and remarkably increase the tensile/flexural strength of the corresponding cement composites. A possible regulation mechanism was proposed and thought GO nanosheets exhibited the template effect and contributed to the formation of flower-like crystals. The research provide a new pathway to significantly improving the toughness of cement composites by a simple method.

[1]  João Marciano Laredo dos Reis,et al.  FRACTURE AND FLEXURAL CHARACTERIZATION OF NATURAL FIBER-REINFORCED POLYMER CONCRETE , 2006 .

[2]  S. S. Kumar,et al.  An experimental study on cracking evolution in concrete and cement mortar by the b-value analysis of acoustic emission technique , 2012 .

[3]  R. Ruoff,et al.  Graphene and Graphene Oxide: Synthesis, Properties, and Applications , 2010, Advanced materials.

[4]  Ataullah Khan,et al.  DEVELOPMENT AND CHARACTERIZATION OF HYBRID POLYETHYLENE FIBER REINFORCED CEMENT COMPOSITES , 1993 .

[5]  Tae Sup Yun,et al.  Evaluation of pore structures and cracking in cement paste exposed to elevated temperatures by X-ray computed tomography , 2013 .

[6]  R. Ruoff,et al.  Graphene-based polymer nanocomposites , 2011 .

[7]  Nele De Belie,et al.  Acoustic emission analysis for the quantification of autonomous crack healing in concrete , 2012 .

[8]  Li Bo.  TECHNOLOGY RESEARCH ON OXIDATIVE DEGREE OF GRAPHITE OXIDE PREPARED BY HUMMERS METHOD , 2005 .

[9]  Ataullah Khan,et al.  Development and characterization of hybrid polyethylene-fibre-reinforced cement composites , 1993 .

[10]  Nawawi Chouw,et al.  Mechanical and dynamic properties of coconut fibre reinforced concrete , 2012 .

[11]  Nihat Morova,et al.  Investigation of usability of basalt fibers in hot mix asphalt concrete , 2013 .

[12]  A. S. M. Abdul Awal,et al.  Flexural response of hybrid carbon fiber thin cement composites , 2011 .

[13]  Jong-Pil Won,et al.  Durability characteristics of CO2-cured cellulose fiber reinforced cement composites , 2012 .

[14]  Jinyu Xu,et al.  Dynamic compressive behavior of ceramic fiber reinforced concrete under impact load , 2013 .

[15]  Sailong Xu,et al.  A General and Scalable Formulation of Pure CaAl-Layered Double Hydroxide via an Organic/Water Solution Route , 2011 .

[16]  Yingshu Yuan,et al.  Modeling corroded section configuration of steel bar in concrete structure , 2009 .

[17]  Aparna Roy,et al.  Effect of Jute as Fiber Reinforcement Controlling the Hydration Characteristics of Cement Matrix , 2013 .

[18]  S. Bose,et al.  Preparation of functionalized graphene/linear low density polyethylene composites by a solution mixing method , 2011 .