新旧混凝土界面性能的研究
|
摘要
随着旧有建筑物的逐步老化，一个新的问题摆在了工程人员面前—对旧有建筑物的加固。自20世纪70年代以后大量使用混凝土作为建筑材料，现在，这些建筑物大多数需要加固处理，在加固处理时不可避免的要涉及到加固时的薄弱环节—新旧混凝土界面过渡区，另一方面，在平时混凝土施工中先浇注的混凝土和后浇注的混凝土也存在界面问题，即常见的施工缝。本文从这一问题入手，以试验为手段，对新旧混凝土界面区进行了研究，在试验过程中我们研制了两种界面剂作为加固新旧混凝土时使用。
在试验过程中，我们采用了正交试验设计，大大减少了试验的数量而并没有影响试验的全面性。为了对比研究界面剂的粘结效果，我们在试验时同步进行了两种市售界面剂的试验，对试验结果我们采用了正交直观分析、延性分析、方差分析等分析方法，以全面考察我们研制的界面剂的性能。在试验和分析后，我们发现，对于无机材料，影响界面粘结的主要因素是硅灰，他的界面活性以及对界面的改性性能能够改善界面区性能，提高界面区的粘结能力；而对于有机材料，界面剂中掺入水对粘结能力是致命的，因此，不能在界面剂中掺入水，但，实际的施工面则允许有水，在有机界面剂中固化剂的掺量是至关重要的，它必须采用一个合适的掺量，才能使粘结效果达到最佳。
通过对有机、无机材料两种界面剂的试验研究和分析，我们发现有机材料的粘结效果可以达到工程的需要，无机材料的粘结效果要差一些。同时，通过对试验结果的分析，我们发现了影响无机、有机界面剂粘结性能的因素，这就给我们今后对界面剂的研制提供了参考。
With the old building gradually aging, The repair and strengthening of old building has become an important engineering domain. From 1970's, the engineering use large quantity concrete for building. Now, most of the buildinges needs to reinforcement and strengthening. But when we repair or reinforce the old building, we have to face to the frail zoo ?new to old concrete interfacial transition zone. The other side, in normal construction, the formerly cast concrete and later cast concrete also exsits interface problem, i.e. construction crack. The text commences from the problem, regarding experimenting as the means, proceeding the research to the new to old concrete interfacial transition zone. In experiment process, we researched two kinds of bonding-agent and use it to reinforce the new to old concrete structure.
In experiment process, we adopted orthognal experiment. It reduced the experiment's quantity consumedly, while didn't influence the experiment comprehensive. In order to study bonding-agent's gluing result, at the same time, we make some experiments about two kinds of selling bonding-agents. and, we adopted some analyzing methods for the experimenting rusult, such as analysis of orthognal experiment, analysis of ductility, analysis of variance, for completely investigating the two kinds of bonding-agents' capacity, which we researched it. To inorganic material, after experi- menting and analyzing, we discovered the main factor was silicon ash, it affected interfacial bondage. Silicon ash's interfacial activity can improve property of ITZ (interfacial transition zone), and improve ITZ's bonding cappacity. Then in organism material, water in the bonding-agent is fatal. So, you can't mix water with organism material bonding-agent. But the constructional face allows have some water. To organism material bonding-
agent, the measure of stagnate agent is very important. Only it must adopt a fit measures, you can get the best bonding result.
Based on the experiments and analysis about the organism, inorganic material bonding-agents, we found that organism material bonding-agent can satisfy engineering, but inorganic material bonding-agents is badly to it. At the same time, based on the analysis the experiment's result, we discovered the factors that influenceing the two kinds of bonding--agents' property. This provide some consults to research bonding-agent in the future.
在试验过程中，我们采用了正交试验设计，大大减少了试验的数量而并没有影响试验的全面性。为了对比研究界面剂的粘结效果，我们在试验时同步进行了两种市售界面剂的试验，对试验结果我们采用了正交直观分析、延性分析、方差分析等分析方法，以全面考察我们研制的界面剂的性能。在试验和分析后，我们发现，对于无机材料，影响界面粘结的主要因素是硅灰，他的界面活性以及对界面的改性性能能够改善界面区性能，提高界面区的粘结能力；而对于有机材料，界面剂中掺入水对粘结能力是致命的，因此，不能在界面剂中掺入水，但，实际的施工面则允许有水，在有机界面剂中固化剂的掺量是至关重要的，它必须采用一个合适的掺量，才能使粘结效果达到最佳。
通过对有机、无机材料两种界面剂的试验研究和分析，我们发现有机材料的粘结效果可以达到工程的需要，无机材料的粘结效果要差一些。同时，通过对试验结果的分析，我们发现了影响无机、有机界面剂粘结性能的因素，这就给我们今后对界面剂的研制提供了参考。
With the old building gradually aging, The repair and strengthening of old building has become an important engineering domain. From 1970's, the engineering use large quantity concrete for building. Now, most of the buildinges needs to reinforcement and strengthening. But when we repair or reinforce the old building, we have to face to the frail zoo ?new to old concrete interfacial transition zone. The other side, in normal construction, the formerly cast concrete and later cast concrete also exsits interface problem, i.e. construction crack. The text commences from the problem, regarding experimenting as the means, proceeding the research to the new to old concrete interfacial transition zone. In experiment process, we researched two kinds of bonding-agent and use it to reinforce the new to old concrete structure.
In experiment process, we adopted orthognal experiment. It reduced the experiment's quantity consumedly, while didn't influence the experiment comprehensive. In order to study bonding-agent's gluing result, at the same time, we make some experiments about two kinds of selling bonding-agents. and, we adopted some analyzing methods for the experimenting rusult, such as analysis of orthognal experiment, analysis of ductility, analysis of variance, for completely investigating the two kinds of bonding-agents' capacity, which we researched it. To inorganic material, after experi- menting and analyzing, we discovered the main factor was silicon ash, it affected interfacial bondage. Silicon ash's interfacial activity can improve property of ITZ (interfacial transition zone), and improve ITZ's bonding cappacity. Then in organism material, water in the bonding-agent is fatal. So, you can't mix water with organism material bonding-agent. But the constructional face allows have some water. To organism material bonding-
agent, the measure of stagnate agent is very important. Only it must adopt a fit measures, you can get the best bonding result.
Based on the experiments and analysis about the organism, inorganic material bonding-agents, we found that organism material bonding-agent can satisfy engineering, but inorganic material bonding-agents is badly to it. At the same time, based on the analysis the experiment's result, we discovered the factors that influenceing the two kinds of bonding--agents' property. This provide some consults to research bonding-agent in the future.
引文
1 Metha, P. K. Durability of Concrete-Fifty Years of Progress. ACISP-126. 1991, 1～31
2 熊光晶，姜浩，陈立强，刘金伟，谢慧才．新老混凝土修补界面层粘结质量的改善途径．工业建筑．2001，11
3 韩菊红，袁群，张雷顺．新老混凝土粘结面粗糙度处理实用方法探讨．工业建筑．2001，2
4 赵志方，于跃海，赵国藩．测量新老混凝土粘结面粗糙度的方法．建筑结构．2000，1
5 Ichiro. ADACHI, Shigemi SAKODA, Teruo.YAHIRO,An Experimental Study of The Treatment of Construction Joints in Concrete Structures Using Water Jet Method, 4th PRICWJT. 1995
6 M.h.Fiebich, Influence of the Surface Roughness on the Adherence Between Concrete and Gunite Mortar Overlays, Adherence of Young on old Concrete. Edited by Folder H. wittmann, AEDIFICATIO Vwrlag, Untereng stringer. 1994
7 冯浩，朱清江．混凝土外加剂工程应用手册．中国建筑工业出版社．1999，2
8 方开泰，马长兴．正交与均匀试验设计．科学出版社．2001，9
9 刘健．新老混凝土粘结的力学性能研究．大连理工大学博士论文．2000，6
10 王传志，滕智明．钢筋混凝土结构理论．中国建筑工业出版社．1985，3
11 湖南大学，天津大学，同济大学，东南大学．建筑材料．中国建筑工业出版社．1997，6
12 蔡正咏，王足献，李秀英，李云秀．数理统计在混凝土试验中的应用．中国铁道出版社．1988，3
13 高丹莹，刘建秀．钢纤维混凝土基本理论．科学技术文献出版社．1993
14 王建伟．高温后新老混凝土粘结劈拉强度试验研究．郑州大学硕士学位论文．2002，5
15 WALL J S, Shrive N G. Factors affecting bond between new and old concrete. ACI Mater, 998, 95(1), 117～125
16 Bijien and Salt t. Adherence of Young Concrete to Old Concrete Development of Tools for Engineering. Adherence of Young on Old Concrete. Edited by Folker H. W.
17 Frebrich M. H. Scientific Aspects of Phenomena in the interface Mineral Substrate-polmers. Adherence of Young on Old Concrete. Edited by Folker H. W.
18 Komarneni S. Roy D. M. Cem. Core. Res. 1981, 616(11), 789
19 Bruyne N. A. the Extent of Contact betwwen Glue and Adherence. Aero Research Tech. Buletin 168, Dunford, Cambridge, 1956
20 Smorjai G. A. Chemical Bindungen Zwischen Glasfaster and polymer. Angewandte Chemie. 1977, 89
21 李庚英，谢慧才，熊光晶．混凝土修补界面的微观结构及与宏观力学性能的关系．国家攀登计划(B)“新老混凝土粘结机理与测试方法研究”98年度研究报告
22 姜浩．新老混凝土粘结界面层微细观结构的改善方法和机理．汕头大学硕士学位论文．2001，5
23 王新友，吴科如．聚合物砂浆与混凝土粘结界面的断裂性能研究．混凝土与水泥制品．1995，2，1～11
24 凤凌云．掺硅灰高强混凝土的研究．西南交通大学．1987，9
25 赵文俞，王勤燕，陈文怡．聚合物共混物对水泥石—石英界面结构影响的机理．建筑材料学报．2001，1
26 管大庆，陈章洪，石韫珠．界面处理对新老混凝土粘结性能的影响．混凝土．1994，5
27 祁玲．混凝土中界面的某些力学特性．广西工学院学报．1996，1
28 黄国兴，惠荣炎．混凝土的收缩．中国铁道出版社，1990，6
29 刘健，赵国藩．新老混凝土粘结收缩性能研究．大连理工大学学报．2001，4
30 吴礼贤编译．水泥混凝土断裂机理及断裂参数测试．国外建筑科学
31 韩菊红，毕苏萍，张启明，徐伟．粗糙度对新老混凝土粘结性能的影响．郑州工业大学学报．2001，3
32 万墨林．混凝土结构加固技术．中国建筑工业出版社．1992
33 吴文飞，高作平．混凝土界面处理技术．云南建筑．1997，4
《关于新旧混凝土界面性能的探索》四川建筑，Vol，23，No，6，2003，已录用。
2 熊光晶，姜浩，陈立强，刘金伟，谢慧才．新老混凝土修补界面层粘结质量的改善途径．工业建筑．2001，11
3 韩菊红，袁群，张雷顺．新老混凝土粘结面粗糙度处理实用方法探讨．工业建筑．2001，2
4 赵志方，于跃海，赵国藩．测量新老混凝土粘结面粗糙度的方法．建筑结构．2000，1
5 Ichiro. ADACHI, Shigemi SAKODA, Teruo.YAHIRO,An Experimental Study of The Treatment of Construction Joints in Concrete Structures Using Water Jet Method, 4th PRICWJT. 1995
6 M.h.Fiebich, Influence of the Surface Roughness on the Adherence Between Concrete and Gunite Mortar Overlays, Adherence of Young on old Concrete. Edited by Folder H. wittmann, AEDIFICATIO Vwrlag, Untereng stringer. 1994
7 冯浩，朱清江．混凝土外加剂工程应用手册．中国建筑工业出版社．1999，2
8 方开泰，马长兴．正交与均匀试验设计．科学出版社．2001，9
9 刘健．新老混凝土粘结的力学性能研究．大连理工大学博士论文．2000，6
10 王传志，滕智明．钢筋混凝土结构理论．中国建筑工业出版社．1985，3
11 湖南大学，天津大学，同济大学，东南大学．建筑材料．中国建筑工业出版社．1997，6
12 蔡正咏，王足献，李秀英，李云秀．数理统计在混凝土试验中的应用．中国铁道出版社．1988，3
13 高丹莹，刘建秀．钢纤维混凝土基本理论．科学技术文献出版社．1993
14 王建伟．高温后新老混凝土粘结劈拉强度试验研究．郑州大学硕士学位论文．2002，5
15 WALL J S, Shrive N G. Factors affecting bond between new and old concrete. ACI Mater, 998, 95(1), 117～125
16 Bijien and Salt t. Adherence of Young Concrete to Old Concrete Development of Tools for Engineering. Adherence of Young on Old Concrete. Edited by Folker H. W.
17 Frebrich M. H. Scientific Aspects of Phenomena in the interface Mineral Substrate-polmers. Adherence of Young on Old Concrete. Edited by Folker H. W.
18 Komarneni S. Roy D. M. Cem. Core. Res. 1981, 616(11), 789
19 Bruyne N. A. the Extent of Contact betwwen Glue and Adherence. Aero Research Tech. Buletin 168, Dunford, Cambridge, 1956
20 Smorjai G. A. Chemical Bindungen Zwischen Glasfaster and polymer. Angewandte Chemie. 1977, 89
21 李庚英，谢慧才，熊光晶．混凝土修补界面的微观结构及与宏观力学性能的关系．国家攀登计划(B)“新老混凝土粘结机理与测试方法研究”98年度研究报告
22 姜浩．新老混凝土粘结界面层微细观结构的改善方法和机理．汕头大学硕士学位论文．2001，5
23 王新友，吴科如．聚合物砂浆与混凝土粘结界面的断裂性能研究．混凝土与水泥制品．1995，2，1～11
24 凤凌云．掺硅灰高强混凝土的研究．西南交通大学．1987，9
25 赵文俞，王勤燕，陈文怡．聚合物共混物对水泥石—石英界面结构影响的机理．建筑材料学报．2001，1
26 管大庆，陈章洪，石韫珠．界面处理对新老混凝土粘结性能的影响．混凝土．1994，5
27 祁玲．混凝土中界面的某些力学特性．广西工学院学报．1996，1
28 黄国兴，惠荣炎．混凝土的收缩．中国铁道出版社，1990，6
29 刘健，赵国藩．新老混凝土粘结收缩性能研究．大连理工大学学报．2001，4
30 吴礼贤编译．水泥混凝土断裂机理及断裂参数测试．国外建筑科学
31 韩菊红，毕苏萍，张启明，徐伟．粗糙度对新老混凝土粘结性能的影响．郑州工业大学学报．2001，3
32 万墨林．混凝土结构加固技术．中国建筑工业出版社．1992
33 吴文飞，高作平．混凝土界面处理技术．云南建筑．1997，4
《关于新旧混凝土界面性能的探索》四川建筑，Vol，23，No，6，2003，已录用。