介绍了防止混凝土裂缝的有效措施及施工方法。
The paper introduces effective measures and construction methods of preventing concrete -crack.
在大体积混凝土中掺入一定比例的粉煤炭可有效地防止混凝土裂缝。
It is effective to prevent concrete splitting open for coal ash to mix into big cubage concrete in proportion.
如何防止、处理混凝土裂缝的研究一直在进行中。
The research of how to prevent, handle the concrete crack has been in progress.
介绍了洋都家园基础大体积泵送混凝土在冬季低温条件下，如何防止裂缝出现的技术措施。
Combined with Yangdu home garden, how to the technology measures for preventing crack appearance of large volume pumping concrete under winter low temperature condition is introduced.
其次为使构件破坏时充分发挥预应力钢绞线的强度，防止弯曲裂缝出现在延伸长度之内，提出了先张预应力混凝土板在均布荷载作用下的最小板长。
Secondly, the least length of pretensioned prestressed concrete slab is defined to make the full use of steel strand strength and avoid flexural crack occurs within the development length.
介绍了旧水泥混凝土路面处理、防止反射裂缝措施、道路设计中纵断面设计和横坡确定。
Introduced hereby are the treatment of the old cement concrete pavement, measures to prevent reflective cracking and the profile design and transverse grade determination in road design.
因此，控制好内外温差和温度变形是防止大体积混凝土出现裂缝的重要方法。
Therefore well controlling of difference in temperature and temperature strain are important measures on concrete cracking control.
实践证明，聚丙烯纤维对防止混凝土早期非结构性裂缝具有较好的效果。
By practice, polypropylene concrete has good effect in preventing non-structure crack.
如何防止温差裂缝，是大体积混凝土的技术关键。
How to prevent the cracks caused by temperature difference is the technical key to a mass concrete.
江津观音岩长江大桥为结合梁桥，为防止桥面板湿接缝在约束条件下产生裂缝，该桥面板湿接缝要求采用微膨胀混凝土，以补偿混凝土的收缩、徐变。
In order to prevent the cracks that would be likely caused by restricted conditions of the wet-joint, the wet-joint demands using expansive concrete to compensate the shrinkage and creep.
在补强处理后旧水泥混凝土路面上加铺玻璃纤维格栅是防止反射裂缝的有效措施。
Resurfacing fiberglas grille on the cement concrete pavement is an effective measures to prevent reflection crack.
大体积混凝土的养护主要是控制混凝土中心和表面的温差，保持一定的湿度，防止产生裂缝。
The main point of bulky concrete curing is to control the temperature difference of the center and appearance of concrete, maintain a certain humidity and prevent cracking.
为了提高旧水泥混凝土路面的承载能力和防止出现反射裂缝，用热拌沥青混凝土罩面层并设置SAMI层的修补技术常被使用。
To improve the bearing capacity of old cement concrete pavement and prevent reflective cracking, HMA overlay with SAMI has been used in some highways.
表面保护是防止大体积混凝土表面温度裂缝的有效措施。
Surface protection is one of the effective measures for surface crack prevention. of mass concrete.
为了防止混凝土发生裂缝，许多大体积混凝土在设计中提出抗裂要求，干缩是混凝土抗裂能力的重要指标。
In order to prevent the crack of concrete, many mass concrete takes dry shrinkage as an important index of crack resistance.
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.
分析了高强混凝土非荷载裂缝产生的原因，并提出了如何防止高强混凝土结构产生这一类裂缝的措施。
The possible reasons of non-loaded cracks of high-strength concrete structures were discussed in this paper. In addition, corresponding cracks controlling measures are proposed.
通过热风炉基础施工，介绍了大体积混凝土的施工技术及防止混凝土温度裂缝的控制方法。
Based on the base construction of hot-blast stove the construction technique of large bulky concrete and method to control temperature crevice in concrete are introduced.
结合工程实践对大体积混凝土温度裂缝作了详细的分析和探讨，并总结出几项防止裂缝的技术措施。
According to engineering practice, the article discusses and analyses the crack for temperature action of mass concrete, and sums up some technical measures to be taken for crack resistance.
以实际工程为例，对温度收缩裂缝控制措施进行了综合运用，进一步来说明这些防止钢筋混凝土筏板基础裂缝技术的可行性和合理性。
The methods of controlling temperature shrink crack are applied in a practical concrete slab project, which shows the feasibility and rationality of these methods.
通过加铺层试验路观测与理论计算分析表明，大粒径沥青碎石裂缝缓解层可有效地防止或减缓水泥混凝土路面沥青加铺层的反射裂缝。
The investigations of testing highway and results of theoretic calculation indicate that the extra large-size asphalt macadam layer can prevents asphalt overlay from cracking effectively.
超长混凝土结构的设计和施工中可以采取设置后浇带、采用微膨胀——补偿收缩混凝土或设计无粘结预应力混凝士结构来防止温度收缩裂缝的产生。
The designer can set post-pouring belt, using UEA con- crete and designing pre-stressing concrete structure to avoid the crack caused by temperature and shrinkage.
在混凝土表面铺设一定厚度的保温板可以有效的降低混凝土表面的拉应力，防止裂缝的产生。
Laying certain thickness heated board can reduce the concrete surface tension stress effectively to prevent crack.
上述特性将有助于减小混凝土内部温度梯度，对于防止水工混凝土结构表面裂缝起到良好的作用。
This behavior will be helpful to decrease temperature gradient and to lessen surface thermal stress of concrete structure so as to prevent cracking of a structure.
采用何种防止反射裂缝的技术，应根据旧水泥混凝土路面的状况来选择。
Which measure to prevent reflecting cracks from happening is adopted rest with the condition of former concrete pavement.
混凝土在浇筑及静置过程中，应采取措施防止产生裂缝。
Concrete pouring and put it aside for at least the process should take measures to prevent cracks.
混凝土在浇筑及静置过程中，应采取措施防止产生裂缝。
Concrete pouring and put it aside for at least the process should take measures to prevent cracks.
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