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Supervisor of Master's Candidates
Title : 大连理工大学(土木水力学院) 建筑材料研究所 所长 大连理工大学建筑能源技术研究中心 主任 辽宁省复合材料学会常务副理事长兼秘书长 政协辽宁省委员会委员 “建筑技术与应用”“混凝土”和“国外连建材科技“等杂志编委
Title of Paper:Slag-Clay Foam Cement as Roof Material for Passive Evaporative Cooling
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Date of Publication:2011-04-09
Included Journals:EI、CPCI-S、Scopus
Volume:194-196
Page Number:890-894
Key Words:Slag; Clay; Roof; Foam Cement; Evaporative Cooling; Heat Flux
Abstract:The objective of this study is to propose a light weight and suitable strength material as roof surface which can detain rainwater during rainy day and lower room temperature in sunny day by passive evaporative cooling. So blast furnace slag was used as the main raw material and clay as the subordinate ingredient to synthesize an alkali-activated cement matrix at room temperature. Furthermore the cement matrix were made into porosity by injecting prepared foam and attempted to improve strength by incorporation of short polypropylene fiber. Finally, the dry density of 453 kg/m(3) and compressive strength of 4.5MPa porous roof material (slag-clay porous material) was gained. Variations of room temperature and heat flux transfer across porous material roof slab have been measured. The results showed that roof covered with slag-clay porous material can satisfactorily lower room temperature and reduce heat flux, as compared with OPC (ordinary Portland cement) roof layer simply. Covering slag-clay porous material layer as roof surface can create a more effective cooling system by utilizing its water absorption and evaporation capability during canicule, which provides a new approach to low carbon and energy saving technological development.
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