直交集成板（CLT）近年在國內的應用日益廣泛，因此累積不同材種板材的耐火數據具有必要性。由於CLT牆板之間通常透過金屬連接件來傳遞應力，構件交接處的不連續區域及連接件的耐火保護措施，便成為耐火設計的關鍵。本研究設置兩組寬高為3公尺、含局部樓板之CLT牆板試體，依據現行規範要求之測試方法，以標準1小時燃燒試驗法測試牆板、牆板樓板接合部等位置的耐火性能，以及接合部連接件採用不同遮蓋方式的效果，實驗結果顯示歐洲雲杉牆板之平均有效炭化速率約為0.87 mm/min，日本柳杉牆板則約為0.96 mm/min，牆板間對接採用牆板中央填木並在外側以自攻螺絲鎖固方式，實驗中發生局部因填木與牆板間接觸不夠緊密，發生濃煙自其間隙竄流至非曝火面情形。外露型抗拉連接件外側以兩層15 mm厚一級耐燃石膏板遮蓋時發揮最好的防火效果，鐵件表面溫度最高僅為130度，採用25.4 mm厚石膏板次佳，而採19 mm厚石膏板遮蓋的連接件表面高溫達360度，導致周邊木材炭化，接合部勁度與強度僅約為健全試體的30 %與68 %，且曝火側連接件在受力初期強度幾乎為零。埋入型連接件採用19 mm厚石膏蓋板時內部鐵件溫度維持於110-140度，強度約維持健全試體的86 %。

This study evaluated the fire-resistant performance of the wall-slab joint of cross-laminated timber and the metal connectors that were covered with various protections by conducting a one-hour fire test. The two sets of test specimens used boards made of European spruce and Japanese cedar. According to the test results, the cedar wall panel’s average effective charring rate was approximately 0.96 mm/min, whereas the spruce wall panel’s was approximately 0.87 mm/min. The exposed-type hold-down connector, which is covered in two layers of 15 mm thick gypsum board, can keep the surface temperature of the iron parts to no more than 130 degrees. On the other hand, one covered with gypsum board that was 19 mm thick had surface temperatures that reached 360 degrees. For embedded-type connectors, using a 19 mm thick gypsum cover can also maintain the internal iron part temperature at 110-140 degrees and result in a residual strength up to 86% of that of the unfired connector.