shrinkage stress

Estimate and investigation of concrete's maximum temperature shrinkage stress of large scale foundation base plate

大型基础底板最大温度收缩应力的估算与验证

Trends thermal shrinkage and dynamic internal stress of pet POY

涤纶POY的热收缩和动态内应力

Marly crack and deterioration of many bridge deck overlays have been attributed to the traffic load, nature factor and high thermal or shrinkage stress development in the concrete.

混凝土桥面铺装在交通荷载、自然因素、温度与收缩应力综合作用下，普遍出现了早期开裂与破坏。

To solve this problem, this article analyzed the through cracks most among all kinds of roof cracks in early-age construction, and pointed out the temperature shrinkage stress caused by concrete shrinkage and temperature's changes is the main cause for cracking.

针对这一现象，分析了早期贯穿裂缝的原因，指出混凝土的收缩和使用环境温度的变化在屋面板中所引起的温度收缩应力是开裂的主要因素。

Effects of reinforcement bar on shrinkage stress of concrete

钢筋对混凝土收缩应力的影响

The changing features of shrinkage stress for Sugi ( Cryptomeria japonica D. Don) wood specimens were studied when dried with radial restraint using superheated steam at 120~ 180 ℃, and the effects of temperature and relative humidity on radial shrinkage stress were analyzed.

试验研究了日本柳杉在120～180℃高温高压过热蒸汽条件下，干燥过程中所伴随的收缩应力的发生发展特征，以及温度和相对湿度对径向收缩应力的影响。

The analysis shows that when same thick glass sheet is produced in same forming conditions, the transverse shrinkage stress caused by surface tension and longitudinal dragging has little effects on shrinkage of glass ribbon behind the last pair of top rollers.

分析表明，生产同一厚度玻璃，在成形条件相同时，表面张力与玻璃纵向拉引产生的横向收缩对末对拉边机后玻璃带收缩率的影响不大。

The study was taken an oil sump as an example to analyze crack defect of permanent mold aluminum casting with thin thickness, deep cavity and large plane, and two causes, thermal stress and shrinkage stress during casting solidification.

以油底壳为例，分析了壁薄、深型腔、大平面铝合金金属型重力铸件，产生裂纹缺陷的原因，确定是合金凝固时期的热应力和收缩应力所致。

The effect of hydrothermal treatment on drying rate, ratio of tangential shrinkage to radial shrinkage and drying stress is discussed.

讨论了热湿处理与干燥速度、弦径向干缩比和干燥应力之间的关系。

A Computation Method of Thermal Shrinkage Stress of Long Think Raft in the Drop of Temperature

厚长混凝土筏板降温阶段温度收缩应力的计算及其实例

The moving laser thermal resource, which energy distribution is Gauss one, made the non-uniform temperature distribution. So the shrinkage and expansion are non-uniform and thermal stress is produced which induced final deformation and warp of component.

能量呈高斯分布的移动热源使温度场分布很不均匀，使得各区域收缩或膨胀不一致，从而产生了热应力，并最终导致制件发生变形翘曲。

The mechanism of early-age cracking should be studied combining the investigation of setting and hardening, shrinkage, shrinkage stress, tensile creep and cracking resistance.

结合早期凝结硬化、收缩变形、收缩应力、拉伸徐变、弹性模量及抗裂阻力观测，研究早期开裂机理；建立科学合理的开裂判据，较为准确的进行开裂预测。

Reduce the shrinkage and temperature stress in concrete through proper construction measures

谈降低混凝土收缩与温度应力的措施

It is probable to removing shrinkage stress thoroughly using expansive monomer on the principle of copolymerization.

利用膨胀单体共聚有可能根本消除收缩应力.

In order to resolve this difficulty effectively, we have to find means to calculate the thermal stress. The factor of concrete shrinkage and creep could not be ignored on strain test of main beam.

混凝土收缩、徐变对应力测试的影响不容忽视；

The mathematic expressions of temperature stress and dry shrinkage stress are deduced. The time-varying model based on multiple factors of concrete face stress is established.

推导了温度应力分量和收缩应力分量的数学表达式，建立了面板应力多因素时变分析模型；

Shrinkage stress was found to increase linearly with cure temperature.

我们发现收缩应力随固化温度直线增加.