利用廢棄瀝青粒料拌製多功能再生混凝土之研究

Application Study of Muliple-Purpose Concrete Using Recycled Asphalt Material

張士旺(Shih-Wang Chang)

指導教授 ： 張子修

朝陽科技大學/理工學院/營建工程系/碩士(2011年)

摘要

本研究利用回收再利用材料(再生瀝青混凝土原料、砂性土讓)，以不同水灰比及不同之砂性土讓與再生瀝青混凝土原料比例製作成控制性低強度再生混凝土材料，探討其對於控制性低強度再生混凝土材料的抗壓強度影響。研究結果顯示水灰比降低則試體強度增高，顯示控制性低強度再生混凝土材料抗壓強度主要還是取決於配比中水灰比之高低，抗壓強度與水灰比成反比之關係，尤其當水灰比小於1.41～1.71時強度明顯提高。實驗結果亦顯示添加再生瀝青混凝土原料會使強度增加，而初步推論添加再生瀝青混凝土原料比例若超過40％～60％時則強度增加幅度會明顯趨於平緩。由實驗結果初步推論當水灰比小於2.18時，則可適量提高再生瀝青混凝土原料之比例，有助於強度的發展，此水灰比有待進一步驗證。由實驗結果本研究建議依工程實務狀況水灰比可選擇在1.41～2.18之間，添加再生瀝青混凝土原料之比例可選擇在20％～60％之間，則可符合目前我國對控制性低強度再生混凝土材料之強度及工作度的要求。

關鍵字

控制性低強度再生混凝土材料 ； 營建廢棄物 ； 再生瀝青混凝土原料

並列摘要

The research was conducted to study the mechanic properties of concrete using recycled construction material with 3 water cement ratios. Two types of recycled construction material (crushed asphalt pavement and trench excavation soils) were used for preparing the concrete specimens to better understand their application in practical projects such as multiple-purpose concrete and controlled low strength material. A series of tests were designed and performed to investigate the influence of water/cement ratio and percentage of aggregate of the recycled construction material used on the mechanical properties including compression strength, ductility and anti-abrasion characteristics.

Results of the study indicate that compression strength increases with decreasing water/cement ratio used for the concrete mix, and specifically, the increase is more significant for water/cement ratio less than about 1.7. In addition, Results of study exhibit that compression strength also generally increases with increasing percentage of crushed asphalt pavement used as coarse aggregate, however, the increase becomes less significant when greater than about 40%.

Preliminarily, results of tests in the study conclude that increasing percentage of crushed asphalt pavement used as coarse aggregate could help enhance the compression strength development for water/cement ratio less than about 2.1. In practical application, the concrete mixed with the aggregate of recycled pavement material used in the study may be acceptable both in terms of compression strength and ductility characteristics depending on specification and technical requirement of the projects, for instance, as a CLSM (controlled low strength material) when the water/cement ratio and asphalt pavement percentage are in the range of about 1.4 to 2.1, and 20-60%, respectively.

並列關鍵字

construction waste material ； CLSM ； recycled asphalt concrete

參考文獻

9. 柴希文，「CLSM材料簡介簡報內容」，財團法人台灣營建研究院，89年。

8. ACI 229R-99﹐〝Controlled Low Strength Material（CLSM）〞

10. M. A .Gabr﹐and John J.Bowders﹐ 〝Controlled low-strengthmaterial using fly ash and AMD sludge〞﹐ Journal of HazardousMaterials﹐Vol. 76 (2000) ﹐pp.251-263﹒

12. 柴希文、陳振川、詹穎雯、謝佩昌，「協助國內傳統工業技術升級計劃－高性能低強度材料之開發與輔導」，財團法人台灣營建研究院，88年。

參考文獻