How to calculate thermal creep stress filed of early-age concrete considering temperature effect by ANSYS software.
如何基于ANSYS软件平台进行考虑温度影响效应的混凝土结构早期温度徐变应力场的计算。
The polypropylene fiber can effectively control the length, width and number of the drying shrinkage crack of early-age concrete.
聚丙烯纤维可有效控制混凝土早期干缩裂缝的长度、宽度和数量。
The probability of concrete structure cracking at early age is estimated by cracking probability and critical cracking risk with probabilistic method for a real case of concrete wall.
利用概率的方法，确定开裂概率和临界开裂风险来评价混凝土结构的早龄期开裂的可能性大小，并在混凝土挡土墙工程中应用。
A mathematic model is set up by probabilistic method for analyzing concrete crack in early age, which is tested by the observation results of a concrete retaining wall case.
利用概率的方法，建立分析早龄期混凝土开裂的数学模型，并利用一实际的混凝土挡土墙工程观测结果进行验证。
Temperature deformation and autogenous deformation are the two major forms of deformation of hardening concrete in early age.
温度变形和自生变形是硬化混凝土在初龄期两种最主要的变形。
Various curing condition and different amount of water evaporated in early-age curing would lead to different strength of concrete.
早期养护条件不同，混凝土失水量不同，则混凝土中后期强度也不相同。
A finite difference model for predicting temperature fields in early age concrete is presented based on adiabatic test on concrete.
采用有限差分方法，建立了基于混凝土绝热温升试验的早龄期混凝土温度场计算模型。
In order to study durability, crack controlling of concrete structures and characteristics of concrete at early age in simulated environment, environmental simulation test technology is discussed.
为了在试验室人工模拟环境下进行混凝土早期特性、裂缝控制及耐久性的试验，需对混凝土结构环境模拟试验室技术进行研究。
Both the sealed curing and the fog curing can reduce early age shrinkage of concrete, but the initial curing age must be emphasized.
密封养护和喷雾养护均能减小混凝土的早期收缩，但必须要强调养护的“及时性”。
For the concrete which losing water is little at early-age, strengthen curing, the strength of concrete will be compensated.
对早期失水较少的混凝土，加强湿养护，混凝土强度能得到较大的补偿。
The results showed that the concrete cracking stress at the early age was associated with the creep and internal and external constraints directly.
研究表明，早龄期混凝土致裂应力主要与徐变和内外约束有关。
The reasons of cracking of large mass concrete construction in the early age are analysed and the technical thinking and ways of prevention of cracking are presented in this paper.
分析了大体积混凝土结构早期开裂的原因，提出了防裂技术思路与对策。
Complicated volume changes of high performance concrete (HPC) is one of significant causes which results in its early-age cracking.
高性能混凝土复杂的早期体积变化是导致其易发生早期开裂的重要原因之一。
The tensile stress induced by restrained thermal and autogenous shrinkage deformations was the main driving force of cracking in concrete at early age.
温度变形和自生收缩变形等受约束形成的拉应力，是引起混凝土早期开裂的主要驱动力；
The optimization of mix composition of concrete according the calculation of inner stress at early age may reduce the cracking risk of concrete structure.
早龄期时混凝土结构内应力的计算为优化混凝土材料的组成提供了依据，尽可能减少混凝土结构的开裂。
In order to solve the early age temperature field of concrete with the finite element method accurately, we discuss the finite element method about solving the temperature field in the third chapter.
之后讨论了混凝土的热物理参数的确定。为了能够正确合理的应用有限元方法求解早期混凝土温度场问题，第三章论述了求解温度场的有限元方法。
The uniaxial restraint testing methods are effective to evaluate the cracking sensitivity of concrete at early age in laboratories.
单轴约束试验是试验室评价混凝土早期开裂敏感性的有效方法。
The perfect wet curing follows the growing law of concrete at early age to prevent it from forming flaws.
混凝土浇筑成型后，其拌合水不可以损失，应采用完美湿养护，防止形成失水缺陷。
The autogenous shrinkage of HPC develops greatly and mainly during early age due to a low water binder ratio, but there is no standard test method for early autogenous shrinkage of the concrete.
高性能混凝土因水胶比低、自收缩大且主要发生在早期，而目前对于早期自收缩的测量还没有统一标准可依。
The cracking problem of early age concrete surface has aroused general concern in engineering circles.
低龄期混凝土表面开裂问题已成为工程界普遍关注的问题。
Early age cracking of concrete has re-emerged as an important issue all over the world in recent years.
近年来混凝土早期裂缝问题再次引起全球工程界的广泛关注。
So it is different from normal concrete in development of early age performance and durability.
本文主要用试验方法研究自密实混凝土早期性能。
The effects of this admixture on early-age shrinkage properties of concrete and cement mortar strength were investigated in this paper.
对混凝土减缩防水密实剂对混凝土的早期收缩性能及对水泥胶砂强度的影响进行了试验研究。
The results show that the early strength and the permeability of concrete can be improved effectively, and the hydration heat can be reduced and the hot peak value at the early age can be postponed.
结果表明：掺加激发剂能有效改善大掺量粉煤灰混凝土早期强度低的问题，而且可以在降低水泥水化热的同时，延缓混凝土早期放热峰值的出现，并使混凝土具有良好的抗渗性能。
Furthermore, the early age shrinkage of concrete would be reduced with the admixture of super-fine steel slag powder.
另外，掺入磨细钢渣矿粉可以降低混凝土的早期收缩。
Result show that the more the loss of water at early-age, the lower strength of concrete acquired.
研究结果表明，早期失水越多，混凝土中后期强度越低。
On the basis of spot sample and laboratory experiment, authors studied the time-variant probability model early age period mechanical properties of high-strength concrete.
通过现场试验建立了高强度混凝土早龄期力学性能的经时概率模型。
The accuracy of the curve is tested and verified by the practical engineering, and the curve can be used as the curve for early-age ground slag concrete strength by rebound method in Zhengzhou.
经工程实践验证了该曲线的测试精度，建议可作为郑州市早龄期磨细矿渣混凝土回弹法的专用测强曲线。
The influence of different water-cement ratio on early-age autogenous shrinkage and total shrinkage of concrete under dry condition is experimented in this paper.
进行了不同水灰比对混凝土早期自收缩及干燥条件下总收缩影响的试验研究。
The influence of different water-cement ratio on early-age autogenous shrinkage and total shrinkage of concrete under dry condition is experimented in this paper.
进行了不同水灰比对混凝土早期自收缩及干燥条件下总收缩影响的试验研究。
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