摘 要 本文主要針對台灣骨材鹼反應潛能資料庫的建置，提供國內工程界使用良質骨材的參考，避免使用反應性骨材引發鹼-骨材反應的發生。在資料庫呈現上，以網頁製作為主軸，目的是希望藉由網際網路傳播功能，快速地將這方面的訊息傳遞出去，使國人能重視鹼-骨材反應可能帶來的危害。一般檢測骨材鹼反應性的標準試驗方法(如CNS13617或ASTM C295、CNS13618或ASTM C289、CNS13619或ASTM C227、ASTM C1105、ASTM C1260、ASTM C1293等)，往往需耗費三個月至六個月的時間，甚至長達一年，而本資料庫不但提供骨材鹼反應潛能試驗資料外，未來將增加部分地區之骨材，添加波索蘭材料(以台電飛灰與中鋼水淬爐石)抑制鹼-骨材反應之研究成果。讓不得已需使用具反應性骨材的情況下，提供可能的解決方法。此外，根據本研究補充調查的試驗成果指出，位於蘇花公路線上之南澳北溪(E03)與南澳溪(E04)骨材，在ASTM C1260與ASTM C1293(2.0%Na2Oeq.)試驗的膨脹量，超出相同試驗條件下之反應性骨材(海岸山脈斑狀安山岩悲極比例含量)之膨脹量，尤以南澳溪(E04)骨材為最。此現象在本研究33處取樣骨材中僅出現在這兩處骨材，代表意義非凡。再者，蘇花公路一帶與花東地區同屬於變質岩區，極有可能發現新的案例與反應性岩種。由於國內對於東部砂石骨材的依賴與日俱增，建議未來也應著重蘇花公路沿線骨材的研究，以避免混凝土工程誤用反應性骨才，導致建物損壞。 The Database for Potential Alkali Reactivity of Aggregates in Taiwan ABSTRACT The main goal of this article is to build up a database system which include data of aggregates potential reaction with alkali in Taiwan. Thus it could be reference materials to concrete constructions while the step of select good aggregates and prevent damage occurred by such reactions. Moreover , there are several advantages by using web technique to conduct the database , such as the convenience of use , the spread of this information we offer. We hope people in Taiwan could pay more attention to Alkali-Aggregate Reactions(AARs) by the establishment of this database. Although there are several methods(CNS13617 or ASTM C295 , CNS13618 or ASTM C289 , CNS13619 or ASTM C227 , ASTM C1105 , ASTM C1260 , ASTM C1293) could be used to evaluate the character of aggregate specimen in AARs , they are usually taken a lot of time to do. This situation may lead to cost raised and progress delayed on constructions. The database contain not only the test data of aggregates but also the inhibitory effects against AARs by using pozzolan materials(fly ash and slag). It could provide probable suggestions when reactive aggregates are misused. Furthermore , based on our results of the part named “supplemental investigate” in this article , we have observe an obvious change in AARs of aggregates from Nan-ao north river (E03) and Nan-ao river(E04) in ASTM C1260 and ASTM C1293. And their expansions are larger than that of andesite from coastal range(highly reactive aggregate) , aggregate from Nan-ao river especially. This kind of phenomena is unique in our results and it would be worth researching in depth. Because of they are located at metamorphic area , it is possible to find another type of reactive aggregates or injured cases. In order to prevent any damage occurred by AARs on concrete structures , we suggest to using conscientious method to research the change in AARs of aggregates from this area.
