骨材堆積對高性能混凝土耐久性質之研究

The Effect of Densified Aggregate on the Engineering Property of High Performance Concrete

王和源(Her-Yuan Wang) ； 湛淵源(Yuan-Yuan Chen) ； 方裕欽(Yu-Chin Fang)

《防蝕工程》 16卷3期 (2002/09) Pp. 191-199

https://doi.org/10.6376/JCCE.200209.0191

摘要

本研究參考法國活性粉混凝土(RPC)之強度提昇理論，配合優生混凝土(EC)配比邏輯，以骨材顆粒緻密堆積為主架構，分別探討不同水泥漿質與量變化，不同級配型態，添加鋼纖維及不同養護環境下之工程性質。結果顯示緻密優生混凝土為一高流動性（符合坍度=250±20mm；坍流度=600±100mm）；高強度、高電阻、低電滲、低乾縮之高品質混凝土。經優生緻密配比邏輯設計之優生混凝土，即使因粒徑降低，導致表面積增加，亦能使之具高流動性，且將傳統的水泥強度效益由10psi/kg提昇至60psi/kg，印證骨材堆積愈緻密，有助於提昇工程性質。

關鍵字

骨材緻密堆積 ； 優生混凝土 ； 級配 ； 水泥效益 ； 氯離子電滲量

並列摘要

This research is to discuss the construction properties of concrete with different water-cementitious ratio, different water amount, different aggregate grading, and different curing conditions and the increase of steel fiber based on the strength improvement theory in reactive power concrete (RPC) in France, and the mixture logic in eugenic concrete. The main structure of the research is aggregate compacked accumulation; the voide among aggregate decide the volume of cement paste. The result shows that compacted eugenic concrete is equipped with high flowing (slump=230-270mm, slump flow=500-700mm), high strength, high electric resistivity, low chloride ion penetration, and low dry shrinkage. Eugenic concrete produced according to eugenic compacted mixture theory still possesses high flowing even though the granular diameter decreases and result in the increase of surface area. The strength efficiency of cement can even be promoted from 10 psi/kg to 60 psi/kg. This proves that aggregate compaction can increase engineering property.

並列關鍵字

aggregate dense packing ； eugenic concrete ； grading ； cement efficiency ； chloride ion penetrability