臺灣博碩士論文加值系統

摘要 本文利用實驗室內抗壓試驗後的圓柱試體,強度由2000psi
至5000psi,經加以碎化充當再生粗骨材,進行配比設計及再生混凝土的製
造.然後測試再生之新拌混凝 土性質及硬固混凝土各項工程及力學性質,
並與相同配比下的普通混凝土比較之. 試驗結果顯示, 由廢棄混凝土
碎化後所得之再生粗骨材,其粒形及各項物理性質都能達到一般混凝土骨
材的基本要求.以適當級配的再生骨材也能順利的拌製成合宜的混凝土.對
水灰比介於0.5至0.7的再生混凝土,進行各項工程及力學性質測析後發現,
雖然其性質較控制組的普通混凝土差,但差距有限,因此可推論出,採用再
生粗骨材拌製混凝土有相當的可行性.

Abstract The use of recycled coarse aggregates in processing
mix design and production of recycled aggregate concrete were
prepared by the crushing of tested concrete cylinders of
compressivestrength from 2000psi to 5000psi in the laboratory.
Then,we test the properties of fresh recycled aggregate concrete
and physical and mechanical properties of harden concrete in
contrastto natural aggregate concrete in the same mix
proportion. The test results showed,the shape and physical
properties of recycled coarse aggregates can reach the basic
requirement of normal concrete coarse aggregates after the
crushing. Proper grading recycled aggregate can produce
reasonable concrete smoothly.After processingtesrs of variant
physical and mechanical properties of recycled aggregate
concretewhich water-cement ratio from 0.5 to 0.7,it was found
that although its properties were worse than natural aggregate
concrete which is the control set,but the differenceis limited.
So,we''ve got a conclusion that it is suitable acceptability to
adopt recycledcoarse aggregate in the concrete production.