Performance of RC Columns Affected by ASR. I: Accelerated Exposure and Damage
Performance of RC Columns Affected by ASR. I: Accelerated Exposure and Damage
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受 ASR 影响的 RC 柱性能。
DOI：
10.1061/(asce)be.1943-5592.0000655
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发表时间：
2015
影响因子：
3.6
通讯作者：
D. Trejo
中科院分区：
文献类型：
--
作者：
M. Olave;J. Bracci;P. Gardoni;D. Trejo
摘要在德克萨斯州，许多钢筋混凝土桥梁已经出现早期开裂。大多数这种恶化已被确定或怀疑是从碱-硅反应（ASR），并在某些情况下从延迟钙矾石形成（DEF）。德克萨斯州交通部关注的一个领域是柱的性能，特别是它们的搭接区域，这些区域的裂缝程度不同，主要来自ASR，但也可能来自DEF。因此，进行了一项研究计划：（1）在不同程度的混凝土过早劣化条件下，使用大型试件评估典型柱的试验性能;（2）开发一种分析模型，该模型可以基于与实验行为的校准来评估色谱柱的行为。本文简要介绍了ASR和DEF;记录了16个大型试件的设计、施工、养护条件和仪器;并介绍了在试验过程中发生的试件尺寸变化和开裂的结果。
AbstractIn Texas, a number of RC bridges have developed early cracking. Most of this deterioration has been identified or suspected to be from alkali-silica reaction (ASR), and in some cases from delayed ettringite formation (DEF). An area of concern for the Texas DOT is the performance of columns, and specifically their lap-splice regions, which have varying levels of cracking primarily from ASR but also possibly from DEF. Therefore, a research program was carried out (1) to evaluate the experimental behavior of a typical column using large-scale specimens under varying levels of premature concrete deterioration and (2) to develop an analytical model that can evaluate the behavior of the column based on calibration with the experimental behavior. This paper provides a brief overview of ASR and DEF; documents the design, construction, curing conditions, and instrumentation of 16 large-scale specimens; and presents the findings on the specimen dimensional changes and cracking that occurred during the deter...
受 ASR 影响的混凝土与钢筋之间的粘结性能
DOI：
--
发表时间：
2012
期刊：
Proc. of Symposium on Concrete Structures for Sustainable Comminity
影响因子：
--
作者：
Takashi Ishikawa;Takashi Yamamoto;Satoshi Takaya and Toyo Miyagawa
通讯作者：
Satoshi Takaya and Toyo Miyagawa