名 |
王憲輝(Xian-Hui Wang) |
電子郵件信箱 |
E-mail 資料不公開 |
畢業系所 |
營建工程系碩士班(Department and Graduate Institute of Constrction
Engineering) |
畢業學位 |
碩士(Master) |
畢業時期 |
95學年第2學期 |
論文名稱(中) |
結構拆除廢棄石材用於新澆置混凝土強度影響研究 |
論文名稱(英) |
The
Study of Compression Strength of Concrete Using Recycled
Aggregates from Building Demolition Wastes |
檔案 |
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|
論文使用權限 |
校內外完全公開 |
論文語文/頁數 |
中文/77 |
摘要(中) |
台灣地區施工產生營建剩餘土石方數量龐大,若能推展營建剩餘土石方妥善再生利用,必能降低營建剩餘土石方產量對環境的衝擊。
本研究利用不同的再生材料(混凝土碎塊、磚碎塊)、舊新骨材比例(100/0、70/30、30/70、0/100)、混凝土配比(1:2:4、1:3:5)以及再生骨材表面的淨化程度,透過一系列試驗探討其對於再生混凝土的強度影響。本研究結果發現,再生混凝土強度隨再生骨材之比例增加而降低,完全使用100%再生混凝土碎塊及磚碎塊骨材混凝土強度分別為使用全新天然骨材之混凝土強度79%及70%。實驗結果顯示,當再生骨材比例超過65%(水泥配比1:2:4)與55%(水泥配比1:3:5)時,再生混凝土強度開始顯著下降,故本研究認為在任何情況下,混凝土使用再生骨材的比例不應超過60%。此外,敞若將再生混凝土骨材表面處理乾淨,其所澆置的混凝土強度與天然骨材所澆置的混凝土強度相當,因此若能將再生骨材淨化乾淨則可將其視為天然骨材使用。
一般而言,本研究認為營建廢棄物再生骨材經適當處理後,依工程強度需求及目的,應為可利用之材料。 |
摘要(英) |
The
recycling use of the tremendous amount of construction
demolition wastes produced from various types of construction
has recently become an important issue in practice for reducing
its negative impacts on the environment in Taiwan.
The study used 2 types of recycled aggregate from construction
demolition wastes (crushed concrete and crushed masonry block)
to study the compression strength of concrete at 2 mix ratios
(1:2:4 and 1:3:5) thru a series of tests conducted with 2
selected parameters: recycle/new ratio and surface cleansing of
the recycled aggregate. The results of the study revealed that,
in general, the compression strength of the concrete decreases
with increasing ratio of recycled aggregate used. The
compression strength of concrete with 100% use of the recycled
crushed concrete and crushed masonry block was 79% and 70%
respectively of that of concrete mixed only with natural new
aggregate. The results also indicated that, when the ratio of
recycled aggregate used reached ~65% for mix ratio 1:2:4 and
~55% for mix ratio 1:3:5, the strength of the concrete started
to decrease more rapidly with increasing recycled aggregate
ratio. The study concluded that the recycled aggregate ratio
used should never exceed 60% to avoid poor quality of the
concretes using recycled aggregate under any
circumstances. Also, if the surface is completely cleaned and
washed, the recycled aggregates from crushed concrete can be
used as natural new aggregate for mixing concrete.
In general, the results of the study suggested that, the
recycled aggregates produced from construction demolition wastes
can be a useful material for mixing concrete provided an
appropriate engineering process is designed and conducted
depending upon the strength requirements and purposes of the
constructions. |
關鍵字(中) |
再生骨材
再生混凝土
抗壓強度
營建廢棄物
|
關鍵字(英) |
concrete
compression strength
recycled aggregate
construction demolition waste
|
口試委員 |
紀子文 - 召集委員
蔡佩勳 - 委員
張子修 - 指導教授
|
口試日期 |
2007-07-13 |
繳交日期 |
2007-07-18 |