混凝土裂缝

• Along with the development of science and technology , new material , new technology and new craft constantly emerges , and lead to reasons of concrete crack to become complication , therefore predicting and controlling concrete crack constantly is faced with new problems and challenges
  随着科学技术的发展，新材料、新技术、新工艺不断涌现，导致混凝土开裂原因趋向于复杂化，因此，混凝土裂缝的预测与控制也不断面临新的问题和挑战。
• In this paper , the properties of fluid - modified epoxy resin containing different thinners , ethylamine anti plasticizer were tested and the effect of fluid - modified epoxy resin in repairing concrete crack through embedded pipe was compared with that of conventional grouting
  测试了不同稀释剂、固化剂及增韧剂综合改性的环氧树脂多组配方灌浆液的性能，对通过预埋玻璃管模拟灌浆修补混凝土裂缝的效果与通过缝面灌浆修补混凝土裂缝的效果进行了比较。
• My research result indicate : designing double - desk expansive agent and polymer , designing double - desk expansive agent and polypropylene fiber , with the right construction method is very good to resist concrete crazing . henceforth , the method can be introduced to the structure field
  本文的研究成果表明:设计合理抗裂组分的材料配比,再采取适当的施工和养护措施,对于降低混凝土工程中裂缝产生的几率非常有利,可以作为今后控制混凝土裂缝的技术参考方案。
• Used to concrete seam and arbitrarily shape seam in component . in the condition of the expanding being favorable limited , attain satisfied stop - water effect and manage the concrete interstitial leaking . at the same time , it can be also used to shipping and engine etcindustrial equipment
  适用于现场浇注的混凝土施工缝和嵌入构件任意形状的接缝内,在其膨胀受到良好限制的条件下达到满意的止水效果,治理混凝土裂缝的漏水,同时也用于船舶、机车等工业设备的防水密封。
• Based on practice and research made in past many years the author presents a crack tackling technology of “ comprehensive treatment through the combination of grouting , plugging , inserting and coating ” , discusses the cause of cracking and fissuring in concrete , the fissure trentment technology and relevant technigues and examples
  根据多年的实践经验和研究，提出了“灌、堵、嵌、涂相结合，综合治理”的裂缝治理技术，论述了混凝土裂缝产生的原因、裂缝治理技术及相应的施工工艺，并介绍了应用实例。
• The details are as following : 1 ) through the experiments of seventeen reinforced concrete plates with round openings , stress distributions of concrete and steel bars , concrete cracking , failure mechanism , and the influence of reinforcing bars with different amount and layouts on cracking and failure mechanism of the specimens are studied . the experimental study provides data not only for the validation of fea model and nonlinear fem program , but also for the research on new methodology of design for orifices
  本文的主要工作有： 1 )通过17块带圆孔钢筋混凝土板的试验，研究在荷载作用下孔口周围混凝土和钢筋的应力应变分布和孔口开裂、破坏规律，以及不同的配筋方式和数量对孔口混凝土裂缝的产生、发展及孔口破坏的影响，为验证有限元分析模型及非线性分析程序的可靠性提供试验依据，并为建立新的孔口配筋设计方法提供基本试验资料。
• For avoiding harmful cracks in concrete structures during construction , this paper analyzes the possible causes of concrete cracks in yangshan port project , proposes control measures for concrete cracks , and describes the inspection and repairing of concrete cracks , so as to ensure the concrete construction quality of yangshan deepwater port engineering , serving as a reference for field concrete construction
  摘要为尽可能避免混凝土构造物在施工阶段发生有害裂缝，对洋山港区工程混凝土裂缝的可能成因进行分析，提出控制混凝土裂缝的措施，并介绍混凝土裂缝的检测和修补工作，以确保洋山港区建设工程的混凝土质量，可供现场施工参考。
• Because concrete crack will greatly affect the security of concrete penstock in hydropower station , the paper applies the theory of global optimization method to predict the maximum concrete crack width in steel - lined reinforced concrete penstock and bring forward a predicting model based on the theory of artificial neural network ( ann )
  摘要基于人工神经网络的全局优化方法的基本理论，对钢衬钢筋混凝土压力管道外包混凝土结构裂缝预测进行了研究，提出了基于神经网络的管道混凝土裂缝预测模型。
• Reduction crack in the pumping transfer concrete during the megathermal climateit is a diffcult problem . the unit undertaking project of no : 4 pump station for diverting water from the south to the north make a beneficial explore form the design of mix proportionging , control and the concret placing temperature to control the crack extension those experience can be referenced by the unit in charge of large scale pumping station project
  摘要高温季节泵送混凝土裂缝控制的当前工程界一个难题，南水北调淮安四站工程建设中，建设单位科学安排、精心施工，从控制混凝土配合比、入仓温度等多方面着手，对混凝土裂缝控制技术进行了有益的探索，并取得了预期的效果，为混凝土抗裂技术积累了经验，对同类型泵站的施工具有重要的参考意义。
• The research , prevention and disposal of concrete crack is a long - term topic . it is necessary to analyze and discuss the cause of the concrete crack . in order to take efficiently measure to restrain the concrete cracks to hameful direction , it is supposed to patching the shaped cracks at the same time
  混凝土裂缝问题的研究、预防、处理,是一个长期的课题,对混凝土裂缝的成因进行分析、探讨,采取有效措施去抑制混凝土裂缝向有害方向发展是必要的,同时应该对已形成的裂缝进行修补,避免危害结构安全。