1) old concrete
高龄混凝土
1.
The paper surveys a great deal of old concrete buildings which were built eighty years ago,measures the rebound value of old concrete components that bear differ stress,and designs a simulated experiment on aging concrete components,in order to analyze the cause of surface carbonization of old concrete.
对多栋在役80年的混凝土建筑进行调查,检测了不同受力状态下的高龄混凝土构件的表面回弹值,并设计了一组混凝土构件老化室内模拟实验,用以分析高龄混凝土结构表面碳化发展机理。
2.
The paper analyses the cause of the old concrete s crack spreading by survey and experiment to many old buildings.
因高龄混凝土表面碳化,破坏了钢筋周围的钝化膜以及碳化层(CaCO3),随时间推移逐渐由脆性转为塑性,塑性裂纹扩展导致钢筋锈蚀,从而使得混凝土结构承载能力降低。
2) Early-age high strength concrete
早龄期高强混凝土
3) Age of concrete
混凝土龄期
1.
With a significant varied range at the age of concrete (3 to 54days), the relations between the strength and the age of concrete was neglect.
在天津永基花园工程中的超声波管法检测中，因桩身混凝土龄期变幅很大（3天～54天）。
4) concrete at early age
早龄期混凝土
1.
Development of internal humidity in concrete at early ages;
早龄期混凝土内部湿度发展特征
2.
Analysis on surface protection time for concrete at early age in winter;
冬季早龄期混凝土表面保护时刻分析
5) early-age concrete
早龄期混凝土
1.
Numerical simulation of cracking of early-age concrete three-point beams;
早龄期混凝土三点弯曲试验梁断裂的数值分析
2.
Numerical analysis of softening relationship for early-age concrete
早龄期混凝土软化关系的数值分析
3.
By analysis,the recurrence interval is found about design wind velocity in construction of cooling tower;and then,by using research findings of characteristics of early-age concrete obtained by scholars,and considering construction method of tower wall,the analysis of tower wall strength and local stability of a large hyperbolic cooling tower in construction time,is made.
依据相关设计规范,对冷却塔施工期计算风速的选取进行了分析论证;在此基础上,利用其他学者对早龄期混凝土物理力学性能的研究成果,结合冷却塔风筒的常规施工工艺,对某大型钢筋混凝土冷却塔的风筒在施工期的强度及局部稳定进行了计算,并得出了相应的结果,可为类似工程的设计提供参考。
6) early age concrete
早龄期混凝土
1.
Calculation of moisture diffusion coefficient in early age concrete from interior humidity tests;
基于内部湿度试验的早龄期混凝土水分扩散系数求解
2.
To deal with the properties of early age concrete while allowing for the influence of curing temperature on the strength development rate and on ultimate mechanical behavior of concrete, the concept of “aging degree” is introduced.
为合理确定早龄期混凝土的性能,考虑养护温度对混凝土力学性能的发展过程及终值的影响,引入了龄期度法,并以某高层大体积混凝土基础底板的温度场和应力场的有限元计算为例,讨论了应用龄期度法对早龄期混凝土结构温度应力计算问题。
3.
A methodology to calculate stress-dependent strains form the very beginning of concrete placing is developed, which can be done directly by vibrating wire strain readings without the efforts to identify time dependent parameters such as expansion coefficients of early age concrete.
由理论分析提出一套自浇注入模起计算混凝土应力相关应变的方法,该方法摒弃了随龄期变化的参数,直接由应变读数计算混凝土应力相关应变,因而适合自混凝土入模起的早龄期混凝土。
补充资料：泵送混凝土
分子式：
CAS号：
性质：可用混凝土泵通过管道输送拌和物的混凝土。要求其流动性好，骨料粒径一般不大于管径的四分之一，需加入防止混凝土拌合物在泵送管道中离析和堵塞的泵送剂，以及使混凝土拌和物能在泵压下顺利通行的外加剂，减水剂、塑化剂、加气剂以及增稠剂等均可用作泵送剂。加入适量的混合材料(如粉煤灰等)，可避免混凝土施工中拌和料分层离析、泌水和堵塞输送管道。
CAS号：
性质：可用混凝土泵通过管道输送拌和物的混凝土。要求其流动性好，骨料粒径一般不大于管径的四分之一，需加入防止混凝土拌合物在泵送管道中离析和堵塞的泵送剂，以及使混凝土拌和物能在泵压下顺利通行的外加剂，减水剂、塑化剂、加气剂以及增稠剂等均可用作泵送剂。加入适量的混合材料(如粉煤灰等)，可避免混凝土施工中拌和料分层离析、泌水和堵塞输送管道。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条