Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/13533
標題: 以縱波波速評估高性能混凝土強度之研究
A Study on Evaluation of High-Performance Concrete Strength Using the P-Wave Speed
作者: 張范宏
Changfan, Hung
關鍵字: HPC;高性能混凝土;impact-echo method;ultrasonic;compressive strength;p-wave;敲擊回音法;超音波;抗壓強度;應力波
出版社: 土木工程學系
摘要: 
本論文主要目的是要研究高性能混凝土抗壓強度與應力波速度之間
的關係,並探討以應力波速度來評估高性能混凝土抗壓強度的可行性。過
去的研究指出由於普通混凝土的抗壓強度是由水泥砂漿強度所控制,而應
力波波速則主要受粗骨材品質與含量所影響,因此不同配比的普通混凝土
其抗壓強度-應力波速度關係並不理想。但由於高性能混凝土中的水泥砂
漿強度已可達到骨材之強度,可將所受應力有效分散傳遞至各部份,使其
物理行為更接近理想的複合材料,據此應可推測高性能混凝土之抗壓強度
和應力波速度間的關係應會比普通混凝土更為良好。本研究即針對不同水
膠比、骨材含量、養護溫度等條件的高性能混凝土,以敲擊回音法和超音
波法進行應力波速度之量測,並與圓柱試體抗壓強度作比較,探討二者間
之關係,以期在高性能混凝土應用愈來愈廣泛的今日,能建立高性能混凝
土強度-波速關係的基本資料,作為日後現場非破壞性檢測高性能混凝土
品質及相關研究之參考。研究結果顯示,在不同材齡、配比和養護條件下
,高性能混凝土抗壓強度和應力波速度間依然呈現良好的關係,且與普通
混凝土相較之下,高性能混凝土之抗壓強度-應力波速度關係具有很小的
變異性,在對多種不同配比的高性能混凝土作實際測試後,證實以應力波
速度來評估高性能混凝土抗壓強度確實是一深具可行性的方法。

The objective of this thesis was to investigate the
relationship between compressive strength and P-wave velocity of
high-performance concrete (HPC) and to evaluate the feasibility
of using P-wave velocity as a measure of HPC compressive
strength. Past researches have shown that owing to the fact that
the compressive strength of normal strength concrete (NSC) is
controlled by the strength of mortar but P-wave velocity is
influenced significantly by the quality and amount of coarse
aggregate, various NSC mixtures produce a poor strength-velocity
relationship. Unlike NSC, HPC behaves more like an ideal
composite material because the strength of mortar can be as high
as aggregate and the stress can be shared by the aggregate and
mortar. It is believed that the strength-velocity relationship
for HPC can be much better than that for NSC. In order to
establish the strength-velocity relationship for HPC, the
studies measured the P-wave velocity of HPC cylinders with
various water/cementitious material ratio (w/(c+p)), aggregate
content and curing temperatures by impact-echo method and
ultrasonic method first, then compared with their compressive
strengths obtained by uniaxial compression test. The results of
these studies show that the variation in the strength-velocity
relationship for HPC is much smaller then that for NSC,
therefore, the use of the P-wave velocity for on-site evaluation
of high-performance concrete strength is promising.
URI: http://hdl.handle.net/11455/13533
Appears in Collections:土木工程學系所

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