表層滲透塗封劑對混凝土特性影響之研究

Study of the Effect of Surface Penetrating Sealer on the Properties of Concrete

本研究主要探討使用滲透塗封劑（penetrating sealer, PS）對混凝土表層孔隙結構，力學性質及耐久性的影響。不同水灰比（w/c=0.35，0.45，0.55）的混凝土試體，分別用PS以不同噴塗時間及不同劑量進行表面處理。利用抗壓強度試驗評估PS對混凝土力學性質的影響及利用氯離子快速滲透試驗探討對混凝土耐久性的影響。試驗結果顯示噴塗PS對水泥基混凝土的力學性質及耐久性皆有正面的影響。利用SEM微觀觀測及EDS分析PS的滲透深度可達2cm，本研究試驗探討的滲透塗封劑可分類為深層滲透塗封劑（Deep penetrating sealer, DPS）。

The effect of penetrating sealer (PS) on the structure of surface pore, mechanical properties, and durability of concrete was studied. Concrete specimens with various water/cement ratios (w/c=0.35, 0.45, 0.55) were cast and treated surfaced with various amounts of PS at different ages, The effect of PS on the mechanical properties of concrete was assessed by compressive strength and the rapid chloride permeability test was also explored to test concrete durability. Test results indicate that the application of PS significantly improves concrete compressive strength and durability. By using SEM observation and EDS analysis, the penetrating depth of PS can be determined and is about 2 cm. The PS in this study may be categorized as deep penetrating sealer.