【作者】 吕坚； 叶列平；

【Author】 LV Jian YE Lieping (Department of Civil Engineering, Tsinghua University, Beijing, P. R. China 100084)

【机构】 北京清华大学土木工程系；

【摘要】 <正>一、概述为缩短施工周期,现代工程建设中,如大坝、港工建筑物、地下室底板以及很多大型设备的基础承台等大体积混凝土结构,往往需要利用混凝土的早期强度。无论是控制大体积混凝土结构由于温度应力引起的开裂,还是确定混凝土结构的拆模和施加预应力的时间, 都需要确定早龄期混凝土结构的力学性质及其应力状态。成熟度方法和水化度方法在确定早龄期混凝土结构的热学、力学性质方面得到了广泛更多还原

【Abstract】 Maturity method and degree of hydration concept are powerful in dealing with properties of early age concrete. In this paper the harmony of the two methods is shown and accounting for the influences of the curing temperature on the final mechanical behavior of concrete, a concept "aging degree" is introduced to modify the degree of hydration concept. Taking a mass concrete soleplate as example, the application of aging degree method in finite element analysis is discussed in detail.更多还原