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燥热环境中混凝土工作性改善的试验研究 被引量:2
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作者 李晶 王力尚 +3 位作者 刘仍光 杨建伟 周康 王建英 《建材世界》 2012年第6期12-15,共4页
对于中东地区燥热环境下,混凝土坍落度损失快的特点,采取在混凝土中掺入预先吸水的超吸水树脂(Super absorbent polymer,简称SAP)、增加减水剂用量等措施改善混凝土坍落度经时损失。结果表明:掺SAP和增加减水剂用量对当地的两种配合比... 对于中东地区燥热环境下,混凝土坍落度损失快的特点,采取在混凝土中掺入预先吸水的超吸水树脂(Super absorbent polymer,简称SAP)、增加减水剂用量等措施改善混凝土坍落度经时损失。结果表明:掺SAP和增加减水剂用量对当地的两种配合比混凝土坍落度损失有显著改善作用。 展开更多
关键词 中东地区 燥热环境 坍落度损失 SAP 减水剂
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Extreme Adaptation to Extreme Environments in Hot Dry, Hot Sub-humid and Hot Humid Climates in Mexico
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作者 Luis Gabriel Gomez-Azpeitia Gonzalo Bojorquez-Morales +3 位作者 Raul Pavel Ruiz Irene Marincic Eduardo Gonzalez Adalberto Tejeda 《Journal of Civil Engineering and Architecture》 2014年第8期929-942,共14页
The paper discusses the results of a field study carried out in four cities in Mexico: Hermosillo, Mexicali, Merida and Colima, during the warmest seasons of 2006-2007. The survey is according to the adaptive approac... The paper discusses the results of a field study carried out in four cities in Mexico: Hermosillo, Mexicali, Merida and Colima, during the warmest seasons of 2006-2007. The survey is according to the adaptive approach of thermal comfort. The cities' climates are hot dry, hot sub-humid and hot humid. The respondents were inhabitants of low cost housings without air conditioning. The research was performed during warm seasons and according to ISO 10551. The measurements were processed by the common method of linear regression and also by alternative methods, useful for asymmetric climates. Individuals declared comfort at very high temperatures, either high or low humidity, therefore, the resulting neutral temperatures are higher than 30 ℃, except in Colima (28.8 ℃). The upper limits of comfort ranges achieved temperatures up to 35 ℃. The results suggest how great is the capacity of humans to adapt to conditions as extreme as those measured in the study. 展开更多
关键词 ACCLIMATION thermal comfort adaptive approach field studies
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