台灣中部山區風化岩崩積土作為特殊混凝土骨材之先期研究

Preliminary Study of Non-standard Concrete Properties Using Weathered-rock Soils from Mountain Areas in Central Taiwan

黃永週(Yung-Chou Huang)

指導教授 ： 張子修

朝陽科技大學/理工學院/營建工程系/碩士(2010年)

摘要

近年來台灣受颱風、暴雨不斷侵襲，造成山崩、土石等災害頻傳，致政府常需支付龐大資金清理及相關之建設，不敷成本。本研究於南投縣仁愛鄉所取樣之崩積土，於試驗室進行粒徑分析，再以不同水灰比製模完成3天、7天、28天之抗壓強度試驗、基本物理性質試驗、工作度試驗、耐磨試驗，所得數據、圖表再與一般正常骨材所得之數據比較後，本研究實驗結果當現場使用此崩積土水灰比1.5、1.0及0.5之混凝土，其28天強度仍分別可達標準混凝土之11%～66%（31kg/cm2～194kg/cm2），一般而言仍可應用於非制式之混凝土材料，供工程使用。建議可使用於現場之次要結構、重力式擋土牆設計、CLSM（低強度混凝土之回填材料）及當地寬度小於3m之產業道路、農路剛性路面設計等；如此可將清理土石之經費省下，可使工程成本降低，現地取材現地使用，達到減少成本及廢棄土方。

關鍵字

非制式混凝土 ； 再生材料 ； 營建廢棄物

並列摘要

The local and central governments of Taiwan have been spending a great deal of budget and resource on emergency relief and infrastructure recovery due to increasing occurrence of typhone and severe storm in many areas especially in mountain and along major rivers where landslide and flood are frequent natural hazards in the region. The study was conducted to investigate the feasibility of using the weathered-rock debris soils from landslide along several rivers in the Nantou area as recycled aggregate material for making concrete products that are the most common material for construction in Taiwan.
A series of laboratory tests for water/cement ratio of 1.5,1, 0.5 were designed and conducted to investigate concrete properties including physical properties and compression strength of the concrete specimen cylinder at 3, 7 and 28 days after pouring. In addition, the laboratory tests also include workability/slump test and abrasion test from which the results were studied and compared with that of standard concrete specimen using ordinary aggregate in the industry to better understand the possible application of the studied landslide debris soils for some specific construction purposes, especially in remote areas.
The results of the study revealed that the concrete specimens using the recycled aggregate have a 28-day compression strength ranging from 31 kg/cm2 to 194 kg/cm2, about 11% to 66% of the ordinary standard concrete. In general, the study results preliminarily conclude that the concrete using the weathered-rock debris soils from landslide can be used for construction projects such as secondary structural element, controlled low strength material (CLSM), gravity-type retaining wall, rigid pavement in farm field, and some industrial passage with a width less than 3 meters. The results of the study provide useful information not only for better use of the studied recycled construction material but also for reducing the cost of cleaning landslide debris along rivers due to natural hazards in central Taiwan.

並列關鍵字

recycled material ； landslide debris ； non-standard concrete

參考文獻

【5】行政院環境保護署，法規，http://www.epa.gov.tw/

【1】田哲榮，「土石竄流之島 台灣的永續災防路」，經典雜誌，第133期，2009。

【2】詹錢登，「土石流發生與降雨特性之關係」，山崩與土石流專題，

2001。http://email.ncku.edu.tw/~em50190/ncku/196/b/b1.htm

【3】謝正倫，「921震後災區土石流二次災害防治之研究」，山崩與土石流專題，2001。http://email.ncku.edu.tw/~em50190/ncku/196/b/b1.htm