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1985年8月建成的俄勒冈州的盖尔斯维勒坝和1987年8月建成的犹他州的上静水坝,是碾压混凝土设计方法不同的两座碾压混凝土重力坝。本文根据垦务局混凝土与结构试验所丹佛分所对直径150mm钻芯试样进行试验所得出的成果,对硬化混凝上的特性进行评价,论述的内容包括混凝土的密度、抗压强度、直接抗拉强度和直接抗剪强度。接缝的粘结性能也根据接缝的施工记录(龄期和环境温度)作了论述。拌合料的设计是成功的,混凝土具有所希望的性能,其设计经验将在结语中论述。
The Gersweiler Dam in Oregon constructed in August 1985 and the Upper Jingjing Dam in Utah in August 1987 are two RCC gravity dam with different RCC design methods. This paper evaluates the properties of hardened and coagulated concrete according to the results obtained from the test of 150mm diameter core samples by the Denver Branch of the Bureau of Concrete and Structural Reclamation of Reclamation Bureau. The contents of the discussion include the density of concrete, compressive strength, Tensile strength and direct shear strength. The bond performance of the seams is also based on the seams’ construction history (age and ambient temperature). The design of the mix is successful, concrete has the desired properties, and its design experience is discussed in the concluding remarks.