Article(id=1319222716868187036, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222668956643677, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20220816, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1664467200000, receivedDateStr=2022-09-30, revisedDate=1664985600000, revisedDateStr=2022-10-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1792456805673, onlineDateStr=2026-10-20, pubDate=1684512000000, pubDateStr=2023-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792456805673, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792456805673, creator=13701087609, updateTime=1792456805673, updator=13701087609, issue=Issue{id=1319222668956643677, tenantId=1146029695717560320, journalId=1263187385517883426, year='2023', volume='51', issue='5', pageStart='1091', pageEnd='1372', issueExtLink='null', onlineDate='null', pubDate='1684512000000', pubDateStr='2023-05-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1792456794251, creator='13701087609', updateTime=1792456976356, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319223432827490920, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222668956643677, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319223432827490921, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222668956643677, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1104, endPage=1114, ext={EN=ArticleExt(id=1319222717090485149, articleId=1319222716868187036, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Moisture Transfer Characteristics of Hardened Cement Pastes in Low Air Pressure, columnId=1321891041012200067, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Progress on Cement-Based Materials—Research Articles, runingTitle=null, highlight=null, articleAbstract=

The isothermal exposure tests for 270 d at different air pressure (i.e., 101 kPa, 60 kPa, and 20 kPa) and relative humidities (i.e., 43%, and 98%) were carried out for hardened cement pastes. Effect of air pressure on the moisture content and the chemically bound water content in hardened cement pastes was investigated. The moisture transfer characteristics at different low air pressures were analyzed by a proposed numerical model. The results show that a low air pressure promotes the water loss within the hardened cement pastes during the isothermal drying process, resulting in a slight decrease in the chemically bound water content. Under the isothermal wetting condition, the mass of hardened cement paste grows at a logarithmic rule due to the moisture diffusion into the pore network, the decrease of air pressure significantly improve the early-stage mass growth rate and the final mass gain. The numerical approach on the moisture transfer indicates that the increases of water vapor diffusion coefficient, mass transfer coefficient, and intrinsic permeability of hardened cement paste are the main causes of moisture transfer behavior during the isothermal drying and wetting processes.

, authors=Shenghao ZUO^{1, 2}, Qiang YUAN^{1, 2}, Tingjie HUANG^{1, 2}, Kai ZHANG^{1, 2}, Ruonan CHEN^{1, 2}, Yanbin TAN³, authorsList=Shenghao ZUO, Qiang YUAN, Tingjie HUANG, Kai ZHANG, Ruonan CHEN, Yanbin TAN, authorCompany=null, correspAuthors=Qiang YUAN, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319222717367309214, articleId=1319222716868187036, tenantId=1146029695717560320, journalId=1263187385517883426, language=CN, title=低气压环境下硬化水泥浆体的水分传输特性, columnId=1321891041192555140, journalTitle=硅酸盐学报, columnName=水泥基材料研究新进展—研究论文, runingTitle=null, highlight=null, articleAbstract=

高原地区的低气压环境对水泥基材料的干燥收缩与抗冻融性能等均有不利影响，该环境下水分传输特性的改变是重要的影响因素。对不同水灰比的硬化水泥浆体开展了不同气压（101、60 kPa和20 kPa）与相对湿度（43%、98%）环境中270 d的等温暴露试验，研究了低气压环境对硬化浆体中含湿量及化学结合水含量的影响，并建立数值模型分析了低气压环境对水分传输特性的影响。结果表明：在等温干燥环境中，低气压环境会促进硬化浆体中水分散失，并导致化学结合水含量的轻微下降；在等温润湿环境中，水分逐渐扩散进入硬化水泥浆体中，使试件质量随暴露龄期呈对数增长，环境气压降低会明显提升早期的质量增长速率与最终质量增加值。水分传输的数值模拟结果说明了低气压环境中水蒸气扩散系数、对流传质系数与硬化浆体的本征渗透率的增大是导致等温干燥和润湿过程水分传输行为的主要原因。

, authors=左胜浩^{1, 2}, 元强^{1, 2}, 黄庭杰^{1, 2}, 张凯^{1, 2}, 陈若楠^{1, 2}, 谭盐宾³, authorsList=左胜浩, 元强, 黄庭杰, 张凯, 陈若楠, 谭盐宾, authorCompany=null, correspAuthors=元强, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=anKbZqtr9NdiySNy05KL8g==, magXml=Qdw3U/jZlBSgR22EP6A/bw==, pdfUrl=null, pdf=tQTjde6ofYjKBj6sSS/5Ng==, pdfFileSize=1180958, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=t4JyoCzxnwQ/F+NT/Tzchg==, mapNumber=null, fund=null)}, authors=[Author(id=1322521350783225890, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1319222716868187036, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=zuosh93@csu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322521351156518949, tenantId=1146029695717560320, journalId=1263187385517883426, articleId=1319222716868187036, authorId=1322521350783225890, language=EN, stringName=Shenghao ZUO, firstName=Shenghao, middleName=null, lastName=ZUO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=^1.School of Civil Engineering, Central South University, Changsha 410075, China
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ZUO Shenghao (1993-), male, Doctoral candidate. E-mail: zuosh93@csu.edu.cn

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ZUO Shenghao (1993-), male, Doctoral candidate. E-mail: zuosh93@csu.edu.cn

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左胜浩（1993—），男，博士研究生。

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左胜浩（1993—），男，博士研究生。

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