垃圾焚化爐底渣應用於透水性MRC之配比研究

A Study on Proportion of Pervious Multi-functional Regeneration Concrete with Waste Incinerator Bottom Ash.

劉昀松(Yun-Song Liu)

指導教授 ： 王弘祐 ； 林金炳

國立屏東科技大學/工學院/土木工程系所/碩士(2011年)

https://doi.org/10.6346/NPUST.2011.00070

摘要

本研究以多功能再生混凝土(Multi-functional Regeneration Concrete；MRC)為觀點，利用垃圾焚化爐底渣、水泥及水組合出透水性MRC。因透水性MRC結構大部分為底渣，故先進行底渣作基本物性試驗，並尋找出適當拌合方式以達成品之一致性。配比設計為固定水灰比皆為0.42，水泥用量為130㎏/m3，粒料總用量皆相同為1600㎏/m3，細粒料所佔比例分別有25％、20％、15％、10％、0％，並以20％及0％之配比提升水泥用量至200㎏/m3作比較，利用齡期3天、7天、28天、56天之抗壓強度試驗、齡期28天抗彎強度試驗，孔隙率試驗、實驗室透水係數試驗、硬固透水性MRC單位重、現地透水試驗，分析探討不同比例底渣粗細粒料用量對透水性MRC性質影響。
研究結果顯示，28天抗壓強度在11.69～52.28㎏f/㎝2範圍，水泥用量130㎏/m3各齡期抗壓強度發展變化較水泥用量200㎏/m3小，28天抗彎強度4.01～10.91㎏f/㎝2範圍，抗彎強度約為抗壓強度的21％至35％，透水係數在9.81×10-2～1.11×10-1cm/sec範圍，現地透水量在1304～1500 ml/15sec範圍。因底渣具高吸水率之特性，拌合方式對透水性MRC成品具有相當之影響，原預期細粒料用量所佔比例愈高強度愈高，但細粒料使用量多容易集中產生弱面影響強度，抗壓強度與抗彎強度皆是如此，而垃圾焚化爐底渣含有玻璃與陶瓷磁磚較扁平，皆會影響各試驗數據。整體而言底渣具有質輕多孔之特性，適合作為透水性MRC鋪面之粒料，但建議拌合方式及底渣中具扁平粒料須加以探討。

關鍵字

多功能再生混凝土 ； 垃圾焚化爐底渣 ； 透水性

並列摘要

In this study, waste incinerator bottom ash is used as aggregate of the pervious concrete, based on the Multi-functional Regeneration Concrete (MRC) concept. Since bottom ash is the main ingredient of pervious MRC, properties of bottom ash are firstly tested, the appropriate mixing processes to reach consistency of the product are also studied. The proportion used are water-cement ratio 0.42, cement 130 kg/m3, and the total weight of aggregates 1600 kg / m3. Weight percentages of fine aggregates are 25%, 20%, 15%, 10%, and 0% of toteel aggregate weight respectively. Furthermore, a comparison between fine percentage of 20% and 0% concrete specimens with increasing cement dosage form 130 kg/m3 to 200 kg/m3 is also mede. The compressive strength of pervious MRC are tested at ages of 3 days, 7 days, 28 days, and 56 days. Tensile strength, porosity, laboratory permeability coefficient, unit weight, and the in situ permeability tests are performed at the age of 28 days .

The results showed that the range of compressive strength is 11.69 ~ 52.28 kg f/cm 2 at age of 28 days. The compressive strength of concrete with 130 kg/m3 cement are smaller than ones of concrete with 200 kg/m3 cement. The range of tensile strength at age of 28 days is 4.01～10.91kg f / cm2, which is about 21%～35% of compression strength at age of 28 days. Permeability coefficient of the concrete specimes are 9.81×10-2～1.11×10-1cm/sec, and the results of the in situ permeability tests are between 1304～1500 ml/15sec. Since bottom ash has great absorsion potential, mixing process has significant influence on the product of pervious MRC. It is expected that the compressive strength of the specimens will increase as the proportion of fine aggregate increases, but over used fine aggregate tend concentrate easily and produce weak zones which could cause lower the compressive strength and the tensile strength. Flat glass and ceramic tile fragments commonly found in bottom ash have negative influence in properties of the pervious concrete. Generally, bottom ash is light and porous, and it fits requirement of pervious MRC pavement. The mixing process of the bottom ash pervious concrete and the effects caused by flat fragments in the bottom ash aggregate should be further studied.

並列關鍵字

Multi-functional Regeneration Concrete ； waste incinerator bottom ash ； pervious

參考文獻

29. 行政院環境保護署，2010，「垃圾焚化灰渣再利用推動計畫」。

3. 吳建璋，2007，活性粉多孔隙混凝土應用於道路面層之工程性質研究，碩士論文，淡江大學，土木工程學系研究所，台北。

39. Park,S.B.,D.S.Seo,and J.Lee, 2005, “Studies on the Sound Absorption Characteristics of Porous Concrete Based om the Content of Recycled Aggregate and Target Void Ratio,” cement and concrete Research.

42. R, Brough, C.M, Dobson, I.G, Richardson, and G.W, Groves, 1995, “A Study ofPozzolanic Reaction by Solid-state 29Si Nuclear Magnetic ReasonanceUsing Selective Isotopic Enrichment,” J. Materials Science, Vol.30,pp.1671-1678.

43. Yang, J. and G. Jiang, 2003, “Experimental Study on Properties of Pervious Concrete Pavement Materials,” Cement and Concrete Research, Vol.33,Issue.3, pp. 381-386.