實驗室內之Clegg衝擊錘與間接張力試驗關聯性研究-以冷拌再生發泡瀝青混凝土;The study of Relationship between Clegg Impact Hammer and Indirect Tensile Strength in laboratory – taking Cold Recycled Foam Asphalt Concrete as a sample

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题名:	實驗室內之Clegg衝擊錘與間接張力試驗關聯性研究-以冷拌再生發泡瀝青混凝土;The study of Relationship between Clegg Impact Hammer and Indirect Tensile Strength in laboratory – taking Cold Recycled Foam Asphalt Concrete as a sample
作者:	卓世淇;Zhuo, Shi-Qi
贡献者:	土木工程學系
关键词:	冷拌再生發泡瀝青混凝土;Clegg衝擊錘;間接張力強度;Cold-mix foamed asphalt concrete;Clegg impact hammer;indirect tensile strength
日期:	2022-07-28
上传时间:	2022-10-04 10:45:49 (UTC+8)
出版者:	國立中央大學
摘要:	冷拌再生發泡瀝青混凝土有齡期強度發展趨勢且受水分蒸發影響，而國內施工綱要第02727章冷拌再生瀝青混凝土規定現地驗收以Clegg衝擊錘進行，冷拌發泡瀝青混凝土Cleeg衝擊錘CIV值與間接張力強度之關係尚未建立。本研究目的為探討冷拌再生發泡瀝青混凝土CIV值與間接張力之關聯性，首先會蒐集台灣氣候資料作為儲存環境模擬依據，並根據各國施工規範決定實驗室斷面配置，並於不同養治時間測量間接張力強度、含水量及CIV值。試驗結果顯示含水量與間接張力呈高度對數關係，斷面CIV值與間接張力呈高度指數關係，且實驗室與現地斷面有強度發展差異。綜合上述所敘，實驗室試體與現地斷面可能因含水量有強度發展之差異；；以CIV值預測冷拌發泡瀝青混凝土間接張力強度是可行的且Clegg衝擊錘適合用於現地品質控制；本研究之實驗室強度展可依CIV值50分為前期與後期，前期冷拌發泡瀝青混凝土性質類似水泥土壤，後期冷拌發泡瀝青混凝土開始有瀝青混凝土性質，整體來說Clegg衝擊錘可立即測量鋪面強度故可進一步使用及研究。;The strength of cold-mix foamed asphalt concrete was increasing by time and it is influenced by the moisture evaporation. The Clegg impact hammer is adopted to control the field quality of cold-mix foamed asphalt concrete by Construction and Planning Agency, Ministry of The Interior in Taiwan. there are a few studies of the relationship between the CIV of Clegg impact hammer and the indirect tensile strength. The objective of this study is to explore the relationship between CIV and indirect tensile strength of Cold-mix foamed asphalt concrete. Storage conditions are referenced the weather condition of Taiwan, and the section design is based on the construction specification. The CIV, the indirect tensile strength, and water content were measured at various curing time. Based on the results, there was high positive logarithmic correlative between water content and indirect tensile strength. There was high positive exponential correlative between indirect tensile strength and CIV of section, and the development of the lab. and field section strength was different. Based on above, the strength development different could be the water content of lab. specimen and field section. It is feasible to adopt CIV to predict indirect tensile strength of Cold-mix foamed asphalt concrete and Clegg impact hammer is the good quality control in filed. The strength development of lab. section also was separated into early period and late period by CIV 50 in this study. At the early period, the behavior of cold-mix foamed asphalt concrete was similar to cement treated soil. At the late period, the cold-mix foamed asphalt concrete property was closed to asphalt concrete behavior. Both of the early and late period, the Clegg impact hammer is the immediately equipment to evaluate the pavement strength, it worthy of further studying and application.
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