本文介绍了泵送混凝土塑性裂缝产生的原因及预防和处理方法，对提高泵送混凝土施工水平具有重要的指导意义。
In this paper, the causes of the concrete plastic cracking are introduced, and the methods of its precautions and curing are provided.
以粉煤灰的火山灰效应、微集料效应分析为基础，分析研究了粉煤灰对混凝土塑性收缩、干缩、自缩和温度收缩裂缝的影响。
Based on analyzing the eruption and tiny aggregate effect of fly ash, the influence of fly ash on the shrinkage fissure of concrete is studied, caused by the plastic deformation, dry or temperature.
土料须具有足够的塑性，使之能适应坝体及坝基的变形而不致产生裂缝。
The material must have enough plasticity for avoiding cracks while dam and its foundation become deformed.
应用弹塑性理论分析屋面水箱的含裂缝承重墙体，得到临界荷载的计算公式，计算出的临界荷载远此砖砌体的局部抗压强度低。
When elastoplastic theory is used to analyses the brick wall with cracks bearing weight of water box on the roof of a building, a critical load formula is derived.
它们的成因和防范措施以及对已硬化塑性混凝土裂缝的处理。
It also states their cause and prevention measures as well as the treatment of hardened plastic concrete cracks.
将粘弹塑性统一本构理论引入程序中，同时采用了已经比较成熟的破坏准则和裂缝模型。
In this program the author adopt the viscoelastic-plastic unified constitutive theory, at the same time adopting the Kupfer-Gerstle destroy rule and mixed crack model.
根据混凝土面板产生裂缝的原因，并结合工程区的气候特点，认为控制面板的塑性收缩、干缩与冷缩裂缝是防止裂缝产生的重点。
According to the causes of crack occurrence and the weather characteristics in the project area, it is key to prevent the cracks such as the plastic crack, dry crack and cold shrinkage crack.
将引起混凝土裂缝的类型归纳为塑性收缩开裂 ，干燥收缩开裂 ，水化热开裂三种 ，并对其表象及成因进行了阐述。
The types of those cracks are summarized as three kinds: plastic shrinkage cracking, dry shrinkage cracking and hydration heat cracking.
本文简单分析了砼裂缝类型及成因，并通过水泥砂浆抗塑性干缩开裂试验说明聚丙烯纤维在水泥基材料抗塑性干缩开裂能力方面的作用。
This text has analyzed the concrete crack type and the cause of the crack in brief, and given an experiment on the cement sa.
目前关于塑性收缩裂缝的研究几乎都集中在中粗砂混凝土，对于特细砂混凝土塑性收缩裂缝及其相关问题的研究几乎没有。
But almost all the attention of the plastic shrinkage crack are focus on the medium and coarse sand concrete and the study of super fine one not found.
由于这种裂缝是由于混凝土塑性收缩引起，所以称之为塑性收缩裂缝。
The capillary pressure which is the effect of the water loss from the concrete surface, is the origin of the plastic shrinkage in concrete cracking.
由于这种裂缝是由于混凝土塑性收缩引起，所以称之为塑性收缩裂缝。
The capillary pressure which is the effect of the water loss from the concrete surface, is the origin of the plastic shrinkage in concrete cracking.
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