The interface between new and old concrete is often weak.
新老混凝土界面往往是混凝土结构的薄弱界面。
Old concrete surface must be cleaned by water and then coated.
旧的混凝土面必须先用清水冲洗干净，晾干后涂刷。
The asphalt overlay on old concrete pavement is one of the major rehabilitation ways.
在旧水泥混凝土路面上加铺沥青面层是旧路改造的主要形式之一。
The research on adherence of the new-to-old concrete has become profound significance.
对新老混凝土的粘结问题的研究具有深远的现实意义。
General measures of interface between new and old concrete throughout the world were studied.
研究了国内外新老混凝土结合面一般采取的措施。
The bonding quality of new to old concrete has a direct effect in the quality of the construction.
新旧混凝土结合的质量直接影响维修加固成果的质量。
The freezing deteriorate mechanism of concrete itself and adherence of new-old concrete were discussed.
并对新老混凝土粘结面冻融损伤机理进行了探讨。
Finally, the differential method which estimates the bending damage of old concrete pavement is presented.
并建议了确定旧道面板弯曲损伤度的差分方法。
The research results of this thesis have reference and guidance to the modification of old concrete buildings.
本文的研究成果对旧混凝土建筑改造具有指导和借鉴价值。
In the article, the old concrete surface above the shop the new concrete surface of the relevant technologies.
文中介绍了旧水泥混凝土面层之上加铺新的水泥混凝土面层的有关技术。
The design method of new to old concrete with cutting groove is given, and this is applied to the project strengthening.
给出了沟槽式新老混凝土粘结的设计思路，并且应用于实际工程。
The architects left the raw character of the old concrete facility intact, and suspended the pool above, at the top of the hill.
建筑师保留下了山顶上旧混凝土设施的原始特征，完好无损，并在上面悬浮设计水池。
The landscape at the Danish north sea-coast is full of old concrete bunkers. So I changed the materials from the original a bit.
丹麦北海的景观都是古老的混凝土沙丘，所以我从材料的本质上进行了一些改变。
Because of the advantages of asphalt pavement, the way of paving asphalt surface on city old concrete roads are more and more popular.
由于沥青路面的诸多优点，城市旧混凝土路面加铺沥青面层的旧路处理方式越来越受到青睐。
The stress distribution law of adherence of young on old concrete under splitting-tension load is studied as viewed from stress analysis.
从应力分析角度研究在劈拉荷载作用下，新老混凝土粘结的应力分布规律。
The test results show that, the fracture properties of adherence of new and old concrete are evidence lower than the new concrete itself.
试验结果表明，新老混凝土粘结断裂性能明显低于新混凝土整体试件的断裂性能。
The result demonstrates that the roughness of old concrete and adhesive agent have important influence on bond splitting tensile strength.
结果表明，老混凝土表面粗糙度、界面剂对粘结强度有较大影响。
Launch old concrete road surface is it spread pitch layer is it reflect research of crack to prevent and cure to add, it is very necessary.
开展旧混凝土路面上加铺沥青面层防治反射裂缝的研究，是很有必要的。
Thus, this paper bring forward a young method to make up the lack of felt capacity-use mechanical joint element to link young and old concrete.
因此，本文研究的是加强新老混凝土结合，弥补粘结力不足的一种新方法，即采用机械连接件将新老混凝土结合在一起的方法。
The treating methods for the interfacial roughness of new to old concrete are summarized, and the advantages of cutting groove method are given.
总结了新老混凝土粘结面粗糙度处理及评定方法，阐述了沟槽法处理老混凝土表面的优越性。
The micro mechanism of new old concrete bond is analyzed firstly, and the new old concrete is considered as a kind of layered composite material.
对新老混凝土粘结的微观机理进行了分析，认为新老混凝土粘结层呈叠层结构。
The BP artificial neural network prediction model is established for forecasting the shearing strength of new to old concrete with cutting groove.
利用BP人工神经网络对沟槽式新老混凝土的抗剪强度进行了模拟和预报。
Ih this test, the bond between new and old concrete in the repaids beams are good. The strength of repaids beams is higher than that of original beams.
在本试验条件下，修复后梁上新旧混凝土结合性能良好，修复后梁的承载力比原梁有所提高。
Firstly, the quantization study on surface roughness of old concrete which is the key control point of bonding quality was carried on by roughness test.
本文首先通过粗糙度试验对粘结界面质量检验的关键控制点——老混凝土表面粗糙度进行了量化研究。
The Windows of larger buildings were smashed and the tile roofs of houses had crumbled to the ground, while old concrete-block walls were reduced to rubble.
稍大一些的建筑物的窗户被震得粉碎，瓦房屋顶也崩塌到地面，而旧的混凝土砖墙也成了碎石。
The research on adherence of young on old concrete has important theoretical and practical meanings for the repair and strengthening of concrete structures.
新老混凝土粘结问题的研究，对混凝土结构的修补和加固具有重要的理论和实际意义。
So to establish a large-size asphalt treated base between asphalt overlay and old concrete pavement provides a new method to solve the problem mentioned above.
在旧水泥混凝土路面与沥青加铺层之间设置大粒径的沥青稳定碎石中间夹层，为这一问题的解决提供了新的方向。
Based on the adhesive fracture test results of new and old concrete of the authors, a toughness model of adhesive interface of new and old concrete is put forward.
在新老混凝土粘结面断裂性能试验的基础上，建立了新老混凝土粘结面断裂破坏模式，分析讨论了界面层特性及界面微裂缝扩展对新老混凝土粘结面断裂性能的影响。
It is not allowed to repair by normal ways when construction defects happened to some old concrete engineering or new-built ones, eg pavement, bridge, tunnel, etc.
有些老混凝土工程或新建混凝土工程出现施工缺陷，客观条件下不允许按常规方法修补，如公路路面、桥梁、隧道等。
It is not allowed to repair by normal ways when construction defects happened to some old concrete engineering or new-built ones, eg pavement, bridge, tunnel, etc.
有些老混凝土工程或新建混凝土工程出现施工缺陷，客观条件下不允许按常规方法修补，如公路路面、桥梁、隧道等。
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