透水舖面黏結層材料之研究

A study of permeable pavement adhesive layer materials

梁硯翔(Yen-Hsiang Liang)

指導教授 ： 鄭光炎 ； 張寬勇

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2009年)

摘要

由於都市開發密度愈高，都市不透水表面率愈高，地表逕流及洪水頻率相對增加，近年來，國內各縣市政府機關大力推廣在人行步道、學校或停車廣場施作透水性舖面，將原有不透水水泥舖面改為透水性舖面；但多數市區道路及人行道舖面，因地方政府單位顧慮舖設透水性舖面在降雨期間，雨水入滲沖刷路基導致路基被淘空造成路面沈陷，舖面底層仍採用混凝土打底，而失去透水舖面施作的意義。
一般人行道單元舖材施工方式有有軟底、硬底與軟面硬底三部份舖材施工方式，本研究探討以硬底施工採用透水磚為面層，中間則採用透水黏結材料固定透水磚，採用兩種黏結材料作為探討1.環氧樹脂拌和石英砂，2.石英砂拌和水泥摻加固化劑，藉由檢驗規定透水率需≧2×10-2cm/sec及拉拔強度需≧2 kgf/cm2，篩選出材料最適合配比，並探討透水黏結材之孔隙率、抗壓強度、剪力強度及砂漿流度；經本研究試驗得知環氧樹脂作為黏結材料，以重量比（環氧樹脂1:石英砂8）結果得到拉拔強度、透水率、孔隙率及剪力強度，皆符合規定要求，及抗壓強度可達170 kgf/cm2，物理性質與成本方面不亞於市面上販售的環保透水砂漿。

關鍵字

人行道舖面 ； 透水黏結層 ； 透水砂漿 ； 拉拔強度 ； 透水率

並列摘要

As the density of urban development increases, so does the percentage of impermeable surface in urban setting, and the surface runoff and frequency of floods grow as well. In recent years, governments of each level have been encouraging permeable surface pavement on sidewalks, in schools or parking lots, i.e. replacing the original impermeable concrete flooring with permeable pavement. However, for roads and sidewalks in urban areas, the authorities still prefer a concrete bedding beneath the permeable pavement, as they are concerned about that the water that goes through the permeable pavement may penetrate into substrate, erode it away and eventually sink the road surface during down pour, which, yet, misses the point of installing permeable pavement.
In general, sidewalk units are constructed in three configurations, soft bottom, hard bottom and soft top with hard bottom. The study investigated construction with hard bottom and permeable blocks as the top, while permeable blocks are secured with permeable bonding material between top and bottom. Two bonding materials were used for investigation, one being the mixture of epoxy and quartz sand, and the other being the mixture of quartz sand and cement with hardener. By examining the specimens, it was determined that the required permeability is ≧2×10-2cm/sec and pullout strength ≧2 kgf/cm2. Materials were screened for optimized formula, and the porous ratio, compression strength, shear strength and mortar flow were investigated for permeable bonding materials. It is found in the experiment that the use of epoxy as bonding material at the weight ratio of 1 part epoxy and 8 parts quartz sand provides the required performance in pull-out strength, permeability, porous ratio and shear strength, and the resulting compression strength reaches up to 170 kgf/cm2. The physical and economic properties of this formula are no less than those of environmentally friendly permeable mortar that is commercially available.

並列關鍵字

Sidewalk pavement ； permeable adhesive layer ； permeable mortar ； Pull-out strength ； permeability

參考文獻

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