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- Early age strength of concrete 混凝土早期强度
- THERMODYNAMIC ANALYSIS OF THE EARLY AGE STRENGTH IMPROVEMENT OF CONCRETE WITH SEED CRISTAL 晶种提高混凝土早期强度的热力学分析
- The results show that the hydration heat model of concrete is acceptable, and the thermal stress may make concrete wall crack at early age. 结果表明:引入Arrhenius公式的混凝土水化放热模型可以用于计算混凝土结构早龄期时的温度场;早龄期时温度应力可以引起混凝土长墙的开裂.
- The research indicates that the deformation development process of concrete can be divided into three phases: early age contraction, expansion and contraction. 研究表明：混凝土的变形发展可以分为早期收缩、膨胀、收缩至开裂三个阶段；
- The transitory bearing structure of concrete building during construction is varying with time, namely time dependent structure.It consists of formwork shores and early age concrete structure. 摘要现浇混凝土建筑结构施工期间，临时承载结构是由模板支撑和早龄期混凝土结构组成的时变结构。
- 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。
- The nonlinear mapping from mixture proportion of high performance concrete to self-desiccation shrinkage of concrete at early age is established by using artificial neural network. 采用人工神经网络方法,建立高性能混凝土原材料配合比与其早龄期自干燥收缩之间的非线性映射关系。
- The application of steam curing process for precast segmental beams of Humin Elevated Project has increased the early strength of concrete and met the requirements of construction progress. 沪闵高架工程预制节段梁采用蒸汽养护的工艺,使混凝土早期强度增长,满足了施工进度要求。
- In order to study durability, crack controlling of concrete structu res and characteristics of concrete at early age in simulated environment, envir onmental 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。
- The long war of attrition exhausted the strength of both countries. 这场长期的消耗战耗尽了两国的力量。
- Phosphate can hinder the formation of pure mineral C 4A 3 S . When the amount of P 2O 5 is more than 0.5%,the content of main mine ral C 4A 3 S and C 3S remarkably decrease,free lime increase,and the various age strength of the cements obviously decrease. 磷阻碍C4A3S单矿物的形成，当P2O5达0.;5%25以上时，系统的C4A3S及C3S形成量明显减少，f－CaO升高，水泥各龄期强度均显著降低。
- CS-SP1 consists of a water solution containing acrylic copolymers, which can efficiently disperse the cement particles and increase the compressive strength of concrete in early and later ages. 超塑化剂CS-SP1是高性能聚羧酸系水溶液，该减水剂可有效地分散水泥颗粒，并能有效提高混凝土的早期和后期强度。
- He come to the fore as a physicist at an early age. 他在早年就成了杰出的物理学家。
- A ring setup instrument with strain gages was used to evaluate the tensile behaviors of concrete at early ages. 试验采用了一套装有应变计的环形装置来分析混凝土在早龄期受拉时的力学行为。
- I also learned the strength of the collective. 我还认识到了集体的力量。
- The orphan at an early age had to deal with all problems of life by himself. 那个孤儿年岁很小就要单独解决问题。
- Conversely, fly ash has higher contribution to strength of concrete at low W/B but lower contribution at high W/B. 飞灰刚好相反，对低水胶比的贡献大，但对高水胶比的贡献小。
- Compressive strength of concrete was also influenced by the orientation of steel fibers. 钢纤维分布形式的不同对混凝土抗压强度也有一定影响。
- She's wanted to go on the stage from an early age. 她从小就想当演员。
- The machine rests on a bed of concrete. 机器安装在混凝土基座上。
