Influence of multi-scale three-dimensional pore characteristics on the mechanical properties of graphene oxide and carbon nanotube incorporated cement paste
{"title":"Influence of multi-scale three-dimensional pore characteristics on the mechanical properties of graphene oxide and carbon nanotube incorporated cement paste","authors":"Heongwon Suh, Seongmin Cho, Sungwun Her, Sungchul Bae","doi":"10.1016/j.cemconres.2023.107326","DOIUrl":null,"url":null,"abstract":"<div><p>The correlation between the three-dimensional pore characteristics and mechanical properties<span> of graphene oxide<span><span> (GO)-and carbon nanotube (CNT)-incorporated cement pastes were investigated. The nano and micro-scale pore characteristics were evaluated by analyzing </span>pore shapes<span><span> and spatial distribution properties using a radial distribution function<span> (RDF). As a result of the nucleation sites effect, blade-like and plate-like pores were primarily formed in the GO-incorporated samples and rod-like pores in the CNT-incorporated samples, as compared to the plain samples without </span></span>nanomaterials. In addition, the pore scattering, instead of the pore clustering property, was improved in the nanomaterial-incorporated samples. Notably, results obtained from X-ray nanoimaging and micro-CT analyses revealed a strong positive linear correlation between the strengths (compressive and splitting tensile strengths) of the composites and the degree of pore scattering.</span></span></span></p></div>","PeriodicalId":266,"journal":{"name":"Cement and Concrete Research","volume":"174 ","pages":"Article 107326"},"PeriodicalIF":10.9000,"publicationDate":"2023-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cement and Concrete Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0008884623002405","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
The correlation between the three-dimensional pore characteristics and mechanical properties of graphene oxide (GO)-and carbon nanotube (CNT)-incorporated cement pastes were investigated. The nano and micro-scale pore characteristics were evaluated by analyzing pore shapes and spatial distribution properties using a radial distribution function (RDF). As a result of the nucleation sites effect, blade-like and plate-like pores were primarily formed in the GO-incorporated samples and rod-like pores in the CNT-incorporated samples, as compared to the plain samples without nanomaterials. In addition, the pore scattering, instead of the pore clustering property, was improved in the nanomaterial-incorporated samples. Notably, results obtained from X-ray nanoimaging and micro-CT analyses revealed a strong positive linear correlation between the strengths (compressive and splitting tensile strengths) of the composites and the degree of pore scattering.
期刊介绍：
Cement and Concrete Research is dedicated to publishing top-notch research on the materials science and engineering of cement, cement composites, mortars, concrete, and related materials incorporating cement or other mineral binders. The journal prioritizes reporting significant findings in research on the properties and performance of cementitious materials. It also covers novel experimental techniques, the latest analytical and modeling methods, examination and diagnosis of actual cement and concrete structures, and the exploration of potential improvements in materials.
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