干旱区生态环境知识资源中心(Arid): Hygrothermal performance of vernacular stone in a desert climate

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DOI	10.1016/j.conbuildmat.2019.04.244
	Hygrothermal performance of vernacular stone in a desert climate
	Makhlouf, Nahla N.1; Maskell, Daniel 2; Marsh, Alastair 3; Natarajan, Sukumar 2; Dabaieh, Marwa 4,5; Afify, Mohamed Moemen 1
通讯作者	Maskell, Daniel
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2019
卷号	216 页码:687-696
英文摘要	Remote desert communities are often the most vulnerable to temperature extremes, as lack of access to reliable electricity prevents the use of active cooling or heating. Hence, there is a need to investigate how the building envelope itself can be used to passively regulate indoor environments. Readily available vernacular building materials in such areas are thought to aid in not only attenuating temperature swings but also moisture regulation, which improves comfort in a dry climate. Thus, the aim of this research is to investigate the hygrothermal properties of three different stone types commonly used as building materials in the Western Desert of Egypt: sandstone, limestone and, uniquely, Karshif, a rock rich in sodium chloride. The materials' thermal conductivity, moisture sorption and buffering, water vapour resistance, porosity distribution and phase composition are experimentally investigated. Our results show that the local perception of limestone buildings having poor indoor comfort, despite the material's superior thermal conductivity and specific heat capacity is only explainable through the relative superiority of sandstone and Karshif in moisture buffering. Vernacular materials need to be tested in environmental conditions representative of their local climate, rather than standardised conditions, as the latter may paint an incorrect picture of performance which, in the case of Karshif, led to partial dissolution under relative humidity of greater than 80%. However, testing under typical desert conditions demonstrates that both Karshif and sandstone are viable building materials that exhibit excellent moisture regulation behaviour. Since building materials in desert conditions may have to withstand atypical weather extremes, including rain, local materials need to be utilised within carefully designed wall assemblies or treated wall sections and, in the case of Karshif, not used in areas where relative humidity regularly reaches 80%. These findings are an important contribution in validating the performance of vernacular stone, and more widely, in demonstrating the importance of selecting appropriate testing conditions. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Hygroscopic Hygrothermal Salt Dynamic vapour sorption Sorption-desorption isotherm Karshif Vernacular stone Desert architecture Western Desert of Egypt
类型	Article
语种	英语
国家	Egypt ; England ; Sweden ; Denmark
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000472697200058
WOS关键词	MOISTURE BUFFERING CAPACITY ; SORPTION ISOTHERMS ; SIWA OASIS ; ADSORPTION
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214981
作者单位	1.Cairo Univ, Fac Engn, Dept Architecture, Cairo, Egypt; 2.Univ Bath, Dept Architecture & Civil Engn, Bath, Avon, England; 3.Univ Leeds, Sch Civil Engn, Leeds, W Yorkshire, England; 4.Malmo Univ, Dept Urban Studies, Malmo, Sweden; 5.Aalborg Univ, Dept Architecture Design & Media Technol, Aalborg, Denmark
推荐引用方式 GB/T 7714	Makhlouf, Nahla N.,Maskell, Daniel,Marsh, Alastair,et al. Hygrothermal performance of vernacular stone in a desert climate[J],2019,216:687-696.
APA	Makhlouf, Nahla N.,Maskell, Daniel,Marsh, Alastair,Natarajan, Sukumar,Dabaieh, Marwa,&Afify, Mohamed Moemen.(2019).Hygrothermal performance of vernacular stone in a desert climate.CONSTRUCTION AND BUILDING MATERIALS,216,687-696.
MLA	Makhlouf, Nahla N.,et al."Hygrothermal performance of vernacular stone in a desert climate".CONSTRUCTION AND BUILDING MATERIALS 216(2019):687-696.