大体积混凝土温度实测与芯部的力学性能发展规律

TEMPERATURE OF MASS CONCRETE MEASURED AND RULE OF DEVELOPMENT OF CORE CONCRETE MECHANICAL PROPERTY

通过对千岛湖一号特大桥拱座大体积混凝土的温度实测,得到混凝土温度场数据。根据实测的温度发展规律,在实验室内进行温度匹配养护,测试混凝土的力学性能。实验结果表明,匹配养护的混凝土的强度较标养下早期发展速度快很多,匹配养护的混凝土后期强度趋势发展平缓;弹性模量与强度的发展规律相似。

According to having measured the rule of temperature development, the specimens were cured under matching curing system. Mechanical property of concrete was tested.The experimental result show that increasing rate of the specimens strength under the matching curing system more fast than under the standard curing system, later strength of the concrete specimens under matching curing develop very slowly; also static elastic modulus has the similar rule.