Long-Term Properties of Hoover Dam Mass Concrete
Long-Term Properties of Hoover Dam Mass Concrete
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DOI：
10.1061/41141(390)6
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发表时间：
2010-10
期刊：
影响因子：
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通讯作者：
Katie Bartojay;Westin T. Joy
中科院分区：
文献类型：
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作者：
Katie Bartojay;Westin T. Joy
胡佛水坝最初于 1931 年至 1936 年建造，仅大坝就使用了超过 325 万立方码的混凝土。大坝的大部分混凝土是由最大尺寸骨料 (MSA) 高达 9 英寸的大体积混凝土。最初为保证施工期间的质量而进行的 28 天抗压强度测试结果显示在 3,500 磅/英寸的范围内。 1995 年，垦务局材料工程和研究实验室完成了一项测试计划，以评估胡佛水坝混凝土的长期性能。此时的抗压强度平均为 7,230 磅/英寸。讨论将包括岩心样本位置以及本研究的压缩、拉伸和剪切强度测试结果，以及确定岩心测试计划需求的讨论。
Hoover Dam, at its original construction in 1931-1936, was constructed with over 3.25 million cubic yards of concrete in the dam alone. Most of the concrete for the dam was mass concrete made with up to 9-inch maximum size aggregate (MSA). The original 28-day compressive strength tests performed for quality assurance during construction were found to be in the 3,500 lb/in range. In 1995, the Bureau of Reclamation’s Materials Engineering and Research Laboratory completed a testing program to evaluate the long term properties of the Hoover Dam concrete. Compressive strengths at this time were found to average 7,230 lb/in. Discussions will include the core sample locations and compressive, tensile and shear strength test results from this study, along with a discussion of determining the need for the core testing program.