In this paper, the causes of the concrete plastic cracking are introduced, and the methods of its precautions and curing are provided.
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。
Plastic cracking, temperature cracking and dry shrinkage cracking are always occurred during construction and application of the ready mix concrete.
塑性开裂、温度开裂以及收缩开裂是混凝土施工应用中经常出现的质量通病。
Filling the pores in the aerogel with plastic should remove its fragility and, conversely, the network of clay molecules in the aerogel will stop the plastic cracking.
并且对应地，在气凝胶内部的粘土分子网络还会阻止塑料破裂。
The experimental results show that with the increase of content and fineness of fly ash used in high strength concrete, the total areas of plastic cracking decrease.
本文主要就环境因素变化对高强混凝土塑性收缩开裂的影响趋势进行专门试验研究，并就其影响机理及相关的问题进行了分析和阐述。
Filling the pores in the aerogel with plastic should remove its fragility and, conversely, the network of clay molecules in the aerogel will stop the plastic cracking.
用塑料填充气凝胶的微孔应该会去掉它的易碎性。并且对应地，在气凝胶内部的粘土分子网络还会阻止塑料破裂。
Anyway, no matter is the use of water or oil cultivation methods, can rise to prevent the plastic rockery stone cracking, can not be repaired.
总之，不管是采用水养方法，还是油养方法，都只能起到防止塑石假山开裂的作用，不能修复。
Plastic cement solves cracking problem of cement sheath successfully. With high strength fiber added in, not only the strength, but also the flexibility is increased.
塑性水泥可以很好地解决水泥环的脆裂问题，它通过掺入高强度纤维，不仅可增加水泥石的强度，而且可改变水泥石的弹性。
Along the cladding direction, plastic tension strain appears which is the main cause of cladding layer cracking.
熔覆层材料沿熔覆方向发生的塑性拉伸变形，是造成熔覆层开裂的主要原因。
Besides, la with high water content is beneficial to restraining the plastic shrinkage cracking of LWAC.
此外，高含水率轻骨料更有利于抑制混凝土早期塑性收缩开裂。
Therefore, the technology combining steel fiber with expensive agent is appropriate to the plastic shrinkage and cracking of concretes.
因此，采用膨胀剂与钢纤维的复合技术是防止混凝土发生塑性收缩开裂的比较理想的技术措施。
The front impact roller causes transverse plastic compression strain in the weld which is in the brittle temperature range, which counteracts the tensile strain which leads to hot cracking.
前轮对处于脆性温度区间的焊缝金属施加一个横向挤压塑性应变，减小甚至抵消致裂的拉伸应变，防止了焊接热裂纹的产生。
Some plastic regions could be found and some dimples had been observed on the fracture surfaces of the solidification cracking of austenitic-ferritic weld metals.
少量铁素体的焊缝凝固裂纹断口上有许多小塑性区，有明显的韧窝。
Rising demand for naphtha results from the rapid growth of ethylene cracking capacity, along with that of the broader petrochemical and plastic industries.
对粗汽油需求量的不断增加，除更为广泛的石油化工和塑料工业快速增长之外，还起因于乙烯裂解能力的迅速增大。
Properties of anti-cracking of rubberized mortar were studied at plastic stage and hard stage by the method of board and ring devices respectively.
分别用平板法及圆环法测试研究了不同代砂率的橡胶砂浆在塑性阶段及硬化早期阶段的收缩开裂性能。
The types of those cracks are summarized as three kinds: plastic shrinkage cracking, dry shrinkage cracking and hydration heat cracking.
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 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 second picture is impressive. In early summer, it is not rare to see in the Northwest of China that plastic covering moisturizes sprouts grown in the cracking fields.
第二幅照片最令人难忘，大块干裂的田地里，塑料薄膜为禾苗供给着水分，这在初夏的西北并不少见。
This product can improve the performance of heat insulating board as well as the bonding strength of anti-cracking mortar. It is suitable for surface treatment of plastic extruded board.
本产品能够改善保温板性能，提高抗裂砂浆的粘结强度，适用于挤塑板的面层处理。
This paper introduces the influence of the polyropylene fiber on plastic shrinkage and anti-permeability of concrete, and the analysis of anti-cracking and impermeability mechanism.
介绍了聚丙烯纤维对混凝土塑性收缩及抗渗性能的影响，并进行机理分析，最后展望了聚丙烯纤维混凝土在渠道防渗工程中的应用前景。
This paper introduces the influence of the polyropylene fiber on plastic shrinkage and anti-permeability of concrete, and the analysis of anti-cracking and impermeability mechanism.
介绍了聚丙烯纤维对混凝土塑性收缩及抗渗性能的影响，并进行机理分析，最后展望了聚丙烯纤维混凝土在渠道防渗工程中的应用前景。
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