Experimental Study on the Creep Behavior of Alkali-Silica Reaction (ASR) Damaged Concrete with Slow/Late Aggregates
Experimental Study on the Creep Behavior of Alkali-Silica Reaction (ASR) Damaged Concrete with Slow/Late Aggregates
复制标题
慢/晚集料碱硅反应（ASR）损伤混凝土徐变性能试验研究
DOI：
10.1061/9780784479346.183
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Mielich
中科院分区：
文献类型：
--
作者：
Özkan;Reinhardt;Mielich
在许多情况下，因碱硅反应（ASR）而损坏的混凝土仍可使用较长时间。为了计算 ASR 损坏结构的残余强度和变形，需要了解强度、弹性模量和蠕变的知识。大多数研究 [ICAAR] 的重点是发生膨胀、裂纹形成和短期强度下降的损伤机制。此外，在大多数情况下，所研究的混凝土不是用慢速/晚期骨料制成的。该研究项目的目标是研究慢速/晚期骨料混凝土的徐变。这些仅在长期（10 至 20 年）后才会发生反应。慢/晚期骨料源自莱茵河上游的石英斑岩（流纹岩）、杂砂岩、石英岩、花岗岩、安山岩和高品位碎砾石。本研究的结果包括采用不同骨料的混凝土，即树碱敏感骨料（来自下哈尔茨的杂砂岩、来自哈勒斑岩杂岩的石英斑岩和来自上莱茵河谷的碎砾石）和一种碱不敏感骨料（来自黑森林的石英斑岩）。
Concrete that has been damaged by alkali-silica reaction (ASR) is used in many cases still for a longer period of time. To calculate the residual strength and the deformation of ASR-damaged structures knowledge of the strength, of the elastic modulus and creep are required. The focus of most studies [ICAAR] is put on the damage mechanisms of expansion occurring, the crack formation and decreasing short-term strength. In addition, the concretes investigated were not made with slow/late aggregates in most cases. The research project has the goal to investigate the creep of concrete with slow/late aggregates. These react only after long-term (10 to 20 years). The slow/late aggregates stem from quartz porphyries (rhyolites), greywacke, quartzite, granite, andesite and high-grade crushed gravel from the Upper Rhine. The results presented in this study include concrete with different aggregates, namely tree alkali-sensitive ones (greywacke from the Lower Harz, quartz porphyry from the Halle Porphyry Complex and crushed gravel from the Upper Rhine valley) and one alkali-insensitive aggregate (quartz porphyry from the Black Forest).
硅质骨料潜在碱反应性的加速测试方法
影响因子：
11.4
作者：
R. Oberholster;G. Davies
通讯作者：
G. Davies