聚丙烯纖維混凝土應用在水中结構物之研究

Study on the Polypropylene Fiber Concrete for Submerged Structures

詹榮鑑(Jung-Chien Chan) ； 楊紹洋(Shaw-Yang Yang) ； 陳獻(Shinne Chen)

《農業工程學報》 54卷4期 (2008/12) Pp. 44-57

https://doi.org/10.29974/JTAE.200812.0004

摘要

本文研究針對廢棄物資材化再利用爲題，將聚丙烯棄邊絲添加於混凝土中，探討混擬土組成材料耐麿的基本行爲，以及應用在水中結構物之可行性。考慮試驗變數包括聚丙烯棄邊絲添加量、水灰比及材齡等，依據AC1211.1規範設計混凝土配比，測試混凝土之力學性質和耐麿耗等。研究結果顯示，0.5~1%聚丙烯棄邊絲添加量可提高混凝土之抗壓、抗變及劈裂等強度，且混凝土耐麿耗、抗衝擊及水中麿耗等性質隨聚丙烯棄邊絲添加量增加而增強。藉由微觀分析得知，掃描式電子顯微鏡(SEM)分析顯示，添加聚丙烯棄邊絲和爐石粉混凝土界面處珠早齡期水化物以Ca(HO)2較多，晚齡期則以C-S-H和C-A-H等較多。X光能譜儀分析(EDXA)顯示，混凝土主要元素爲Ca和Si，次要元素爲K和Fe，綜合以上試驗結果得知，混凝土中添加適量聚丙烯棄邊絲和爐石粉等，可提升混凝土之力學性質和耐麿性質，有利於應用在農田水利之水中結構物。

關鍵字

生態混凝土 ； 聚丙烯棄邊絲 ； 爐石粉 ； 耐麿耗

並列摘要

The study is focusing on the reuse and resource cycling of the discarding garbage, and investigating the basic behaviors of the ecological concrete. The feasibility of the polypropylene fiber concrete applied on the submerged structures is also investigated, The factors of the polypropylene (PP) fiber, water-to-cement ratio, and time period are considered as following test design. This study is based on the rule of material composition, and follows the specification of AC12211.1, then establishes the mixture design algorithm of the ecological concrete and can be referred to the engineering design. The cylinder made of ecological concrete is tested to obtain the properties of the engineering and abrasion. The research results indicate that the concrete added 0.5~1% PP fiber can be enhanced the engineering properties. In addition, the properties of the abrasion, pound, and attrition in water for the ecological concrete increase with PP fiber. The SEM analysis indicates that the hydrate of ecological concrete transition zone contains Ca(OH)2 mainly at early period, however the hydrate contains C-S-H and C-A-H mainly at later period, The EDXA indicates that the main aggregate elements are Si and Ca and the minor aggregate elements are K and Fe. Concluding the test results of each item, the properties of ecological concrete added the slag powder and PP fiber behaves better that using cement as bonding material only. This ecological concrete can be utilized for the submerged structures on the irrigation and drainage engineering.

並列關鍵字

Ecological concreter ； Polypropylene PP fiber ； Slag powder ； Abrasion