负温环境下混凝土力学性能及水化特征研究
发布时间：2019-03-08 10:27
【摘要】：研究了负温养护、交变温度养护下混凝土力学性能的发展情况,揭示了负温混凝土抗压强度、动弹性模量随龄期的变化规律,并利用微观测试方法分析了水泥水化特征和水化产物微观结构形貌.结果表明:在-10℃时,不掺防冻剂的混凝土早期强度极低,甚至由于试件不能成型而无强度;防冻剂可有效减少混凝土早期负温养护引起的微裂缝.
[Abstract]:The development of the mechanical properties of concrete under the maintenance of negative temperature and alternating temperature is studied. The change of the compressive strength of the negative temperature concrete and the dynamic elastic modulus with the age is revealed. The micro-structure of the hydration and the micro-structure of the hydration product is analyzed by the micro-test method. The results show that at -10 鈩，
本文编号：2436714
[Abstract]:The development of the mechanical properties of concrete under the maintenance of negative temperature and alternating temperature is studied. The change of the compressive strength of the negative temperature concrete and the dynamic elastic modulus with the age is revealed. The micro-structure of the hydration and the micro-structure of the hydration product is analyzed by the micro-test method. The results show that at -10 鈩，
本文编号：2436714
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