纖維鹼激發玻璃砂漿之工程性質

Abstract

This study uses the principle of alkali activation and utilizes soda-lime glass as a raw material for inorganic polymeric binders. An aging process was employed in the production of alkali-activated glass inorganic binders (AAGIB) to find out the relationship between water solid ratio (W/S), aging condition and the compressive strength.

Then, proceed the production of alkali- activated glass inorganic mortar (AAGIM)

and find out a mixture which has good workability and meet the standard of compressive strength for engineering applications. To improve the disadvantage of having a high compressive strength but low bending strength, polypropylene fibers, basalt fibers and PET fibers are added into AAGIM randomly or setting in the bottom of the specimens to imitating the steel placement in reinforced concrete to improve bending strength and toughness of the AAGIM specimens. The test results show that basalt fibers can improve the bending strength of the specimen to a maximum extent, but the effect of improving the toughness is poor. Polypropylene and PET fibers have good effect on improving both the bending strength and toughness of the specimens. It shows that polypropylene fibers and PET fibers have great potential for engineering application.This study successfully replaces Portland cement with the AAGIB, and improves the brittle material properties of AAGIM by the method of adding fibers. The use of waste glass and plastic bottles not only achieve the goal of saving energy and reuse of waste but also reduce the preprocessing cost of recycling those waste.本研究將鈉石灰容器玻璃,利用鹼激發 技術應用為無機聚合物之原料,採用陳化製 程(Aging process)試驗得不同水固比與陳 化條件下,強度發展至最佳的膠結材配比, 依此最佳膠結材再行拌合成為鹼激發玻璃砂 漿,得具有良好工作性及滿足工程應用強度 之全玻璃砂漿試體。 為改善鹼激發玻璃砂漿同一般高強度水 泥砂漿具有高抗壓強度但低抗彎強度的特 性,本研究透過添加聚丙烯、玄武岩與切削 寶特瓶所得 PET 纖維,以均勻隨機分布及模 擬鋼筋埋置等擺置方式,嘗試提高鹼激發玻 璃砂漿試體之抗彎強度及韌性。試驗結果得 知,玄武岩纖維可最大幅度提高試體抗彎強 度,但提升韌性之效果較差。聚丙烯及 PET 纖維對試體抗彎強度具良好提升效果,並於 模擬鋼筋埋置的擺置方式下有效提升試體韌 性,可知聚丙烯纖維及 PET 纖維在工程應用 上具有發展潛力。 本研究所製作無機膠結材砂漿,並添加 纖維的方式得強度佳並且改善脆性材料特性 之全玻璃砂漿試體。不僅於廢玻璃與寶特瓶 的使用,達到節能減碳與廢棄物再利用之重 要目的,更降低廢棄物再利用的前處理成本。