نتایج جستجو برای: cold weather concrete

تعداد نتایج: 221050  

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2001

2013
Stuart Bryce Capstick Nicholas Frank Pidgeon

It has been argued that public doubts about climate change have been exacerbated by cold weather events seen as a form of disconfirming evidence for anticipated ‘warming’. Although a link between perceptions of climate and weather is well-established, such assumptions have not been empirically tested. Here we show, using nationally representative data, that directly following a period of severe...

2015
Kate Bassil Mark Kim Anabella Wainberg Karen Smith

Journal: :journal of occupational health and epidemiology 0
a esmaeili nadimi school of medicine, rafsanjan university of medical sciences, rafsanjan, iran m hasani rafsanjan university of medical sciences, rafsanjan, iran m allahtavakoli pharmacology-physiology research center, rafsanjan university of medical sciences, rafsanjan, iran e hakimizadeh pharmacology-physiology research center, rafsanjan university of medical sciences, rafsanjan, iran h bakhshi

background: the role of temperature changes, as an environmental risk factor, in the human health status has been investigated in recent studies. accordingly, the present two-year study was conducted to evaluate the incidence of myocardial infarction (mi) in warm and cold seasons in ali-ibn abi talib hospital, rafsanjan, iran. materials and methods: in this descriptive and cross-sectional study...

Journal: :تحقیقات مهندسی کشاورزی 0
رضا بهراملو دانشجوی دکتری سازه های آبی دانشکده کشاورزی دانشگاه بوعلی سینا همدان حسین بانژاد دانشیار گروه مهندسی آب دانشکده کشاورزی دانشگاه بوعلی سینا همدان

concrete is the most common material used to line irrigation canals and must maintain its durability for the lifetime of the canal. compressive strength has been used as an index to control the quality of concrete; concrete that remains durable under freeze-thaw conditions is that with high compressive strength. research has shown that concrete linings can show suitable compressive strength in ...

Journal: :Journal of microbiology, immunology, and infection = Wei mian yu gan ran za zhi 2006
Wei-Shien Tsai Yao-Hsu Yang Li-Chieh Wang Bor-Luen Chiang

BACKGROUND AND PURPOSE Juvenile rheumatoid arthritis (JRA) is the most common form of arthritis in children and affects both quality of life and school attendance. Weather and temperature conditions are believed to affect joint pains; however, very few studies have investigated this issue. This study examined the association between joint pain in JRA patients and weather conditions. METHODS T...

Journal: :Cement & Concrete Composites 2021

Cold weather (<0 °C) is known for its detrimental impacts on concrete, and thus expensive energy-consuming heating insulation systems are used in cold-weather concreting to prevent frost damage. Supplementary cementitious materials not recommended use because they slow down the setting time of concrete. In this study, one-part alkali-activated slag (AAS) was presented as an alternative environm...

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