本研究主要探討利用過氧化氫(雙氧水)作為發泡劑而生產之冷結型飛灰輕質粒料製程，並且在部分輕質粒料上進行了表面處理。而製程之發泡輕質粒料則作為自充填混凝土(SCC)之粗粒料，本研究進行了各項試驗，如單位重、比重、吸水率、抗裂及筒壓試驗，以評估使用發泡劑及表面處理後之冷結型輕質粒料之物理特性，而自充填混凝土(SCC)之工作性能、力學性能及耐久性能都是根據相應之標準來進行測定。試驗結果顯示，以飛灰80％、爐石20％及發泡劑濃度7％之配比所製成發泡冷結型輕質粒料最輕，測得比重為1.27。研究顯示，進行表面處理後之輕質粒料可以降低29~33%之吸水率，但會增加破裂強度17~25%及筒壓強度15~27%，全部組數之配比，經由8種輕質粒料組合而成，表現出優異之工作性能，並能在流動性、黏滯性及穿透性能上，滿足EFNARC及歐洲聯盟規範之要求，研究結果也顯示了發泡劑和表面處理之方法，將會對自充填混凝土之力學及耐久性造成相當之影響。

This research investigated manufacture of cold bonded fly ash lightweight aggregate (LWA) with addition of hydrogen peroxide as foaming agent. Furthermore, some types of LWAs are surface treated. Afterward, the foamed lightweight aggregate (FLWA) was used as coarse aggregate to produce self-consolidating concrete (SCC). The various tests were conducted to evaluate effects of foaming agent and surface treatment on properties of cold-bonded LWA such as unit weight, specific gravity, water absorption, crushing strength, and particle crushing strength. The workability, mechanical properties and durability of SCC are determined according to corresponding standards. The tests resulted that the lowest specific gravity of FLWA is 1.27 for binary mixture of 80% fly ash and 20% slag at optimum foaming agent concentration of 7%. Surface treatment could reduce water absorption in range of 29-33% but increase crushing strength, particle crushing strength varied from 17 to 25% and from 15 to 27%, respectively. All SCC mixtures made with 8 types of LWA exhibited excellent workability with the good parameters such as flowability, viscosity, and passing ability satisfying to requirement of EFNARC and European Federations Guidelines. The findings also indicated that foaming agent and surface modification affected remarkably on mechanic properties and durability of SCC.

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