本文關(guān)鍵詞：溫度升高20～50℃對混凝土彈性模量的影響探究　出處：《硅酸鹽通報》2016年12期 　論文類型：期刊論文

  更多相關(guān)文章： 混凝土結(jié)構(gòu) 彈性模量 溫度變化 試驗測定

【摘要】：彈性模量是混凝土的重要力學(xué)指標(biāo),是混凝土結(jié)構(gòu)計算分析中的關(guān)鍵參數(shù),不同溫度下混凝土彈性模量如何變化一直是人們比較關(guān)心的問題。本文采用一種加熱保溫裝置,給混凝土試件施加均勻溫度場,在不同溫度下給試件施加壓力;用壓力傳感器測量試件承受壓力,應(yīng)變計測量試件變形,根據(jù)不同溫度下的應(yīng)力和應(yīng)變計算了試件的彈性模量,分析了不同溫度下混凝土彈性模量的變化規(guī)律。試驗結(jié)果表明,常溫下當(dāng)溫度升高為20~50℃時,混凝土彈性模量隨溫度變化不明顯,可以近似按常數(shù)處理。
[Abstract]:Elastic modulus is an important mechanical index of concrete and a key parameter in the calculation and analysis of concrete structure. How to change the modulus of elasticity of concrete at different temperatures is always an issue of concern. In this paper, a kind of heating and heat preservation device is used to apply uniform temperature field to the concrete specimen, and to apply pressure to the specimen at different temperature. The elastic modulus of the specimen was calculated according to the stress and strain at different temperature by using pressure sensor to measure the specimen under pressure and the strain gauge to measure the deformation of the specimen. The variation of elastic modulus of concrete at different temperatures is analyzed. The experimental results show that when the temperature rises to 20 ~ 50 鈩，

本文編號：1426837