Dispersion effect of nano-structure pyrolytic carbon on mechanical,electrical,and microstructural characteristics of cement mortar composite  

作　　者：N.K.Karthikeyan S.Elavenil 

机构地区：[1]School of Civil Engineering,Vellore Institute of Technology,Chennai,India

出　　处：《International Journal of Smart and Nano Materials》2024年第3期534-578,共45页国际智能和纳米材料杂志（英文）

摘　　要：In material science,converting waste into nanomaterials by green technologies highlights the interest in producing sus-tainable carbon nanomaterial(SCN).This study first-ever uti-lized tyre-char as a Nano-Structure Pyrolytic Carbon(NSPC)to develop electrically conductive composites.Unlike other car-bon nanomaterials,the efficiency of NSPC particle as an SCN in developing electrically conductive composites was investi-gated in terms of dispersion,mechanical,water absorption,electrical resistivity,and microstructure.The results of sedi-mentation and zeta potential(-19 mV)showed the excellent dispersion of NSPC particle in water with the combined effect of superplasticizer and ultrasonication.The compressive(40.37%)and flexural strength(10.76%)than that of plain cement mortar composite(CMC)is achieved with 2 wt.%and 1.5 wt.%of NSPC particle,respectively.The water absorption rate and volume of permeable voids were reduced,exhibiting less agglomerations.The percolation zone of AC and DC resis-tivity of NSPC composite ranges between 1 and 2 wt.%,and the established percolation threshold is at 2 wt.%.XRD analysis showed C-S-H formation consistently increased with curing age,and HR-SEM with EDAX analysis exhibits the dense micro-structure and well-distributed NSPC particle at the nanoscale.These experimental outcomes significantly enhanced the relia-bility and provided a framework for tailoring NSPC particle as SCN for developing electrically conductive composite.

关 键 词：Sustainable nanomaterial DISPERSION mechanical properties electrical resistivity microstructure analysis 

分 类 号：TB383[一般工业技术—材料科学与工程] TB33