台灣反應性粒料之反應行為及抑制研究

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林奕佐(Yi-Zuo Lin) 查詢紙本館藏

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土木工程學系

論文名稱

台灣反應性粒料之反應行為及抑制研究

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摘要(中)

2014年ASTM發佈ASTM C1778降低鹼質粒料反應危害風險指引，主要係對鹼質粒料反應的檢測、減緩之方法，以使危害性膨脹發生之可能降至最低。其中降低鹼-氧化矽反應的方法有方法有二，其一為以ASTM C1567或ASTM C1293進行試驗之性能基準法，其二為處方法，而此兩法對於台灣反應性粒料之有效性仍有待驗證。
本文針對常用之台灣砂石進行ASTM C1260及ASTM C1293試驗，以評估ASTM C1567是否適用於特定粒料防制對策之決定。此外，針對台灣典型之反應性粒料，分別以性能基準法及處方法決定輔助膠結材(Supplementary Cementitious Material, SCM)之取代量。在性能基準法方面，利用ASTM C1567試驗，決定台電飛灰及中聯爐石粉之有效取代量。在處方法方面，根據粒料反應等級，考慮一般性結構物及使用環境，決定SCM取代量，並比較兩法決定SCM取代量。
本文研究結果顯示：（1）台灣常用粒料可採用ASTM C1567進行試驗，且獲致偏保守之防制措施。（2）針對台灣典型反應性粒料及台灣常見用之SCM，採用處方法得到的取代量較採用性能基準法之取代量為高，亦即利用處方法決定的防制措施較性能基準法保守，故在台灣採用處方法防制鹼質粒料反應為保守且有效之途徑。

摘要(英)

ASTM C1778 was introduced in 2014 to reduce the risk of deleterious alkali-aggregate reaction in Concrete. Two types of approaches, performance-based and prescriptive, are used for selecting appropriate preventive measures.
In this thesis, ASTM C1293 and ASTM C1260 are conducted with aggregates from major basins in Taiwan to validate if ASTM C1567 is applicable to evaluate the SCM replacement amount under the requirement of performance-based approach in ASTM C1778. Three types of aggregates are evaluated with ASTM C1778 to get the requied amounts of SCM replacement with both performance-based and prescriptive approaches.
Results show that ASTM C1567 can be applied with most aggregates in Taiwan and conservative mitigating measures are suggested. For common types of SCM in Taiwan, the suggested value from prescriptive approach gives higher values than performance-based approach. Therefore, prescriptive approach is effective and applicable in Taiwan for AAR mitigation.

關鍵字(中)

★ 鹼質粒料反應
★ 鹼-氧化矽反應
★ 輔助膠結材
★ ASTM C1260
★ ASTM C1293
★ ASTM C1567
★ ASTM C1778

關鍵字(英)

★ Alkali-Aggregate Reaction
★ Alkali-Silica Reaction
★ SCM
★ ASTM C1260
★ ASTM C1293
★ ASTM C1567
★ ASTM C1778

論文目次

圖目錄 VI
表目錄 IX
第一章緒論 1
1.1 研究動機與目的 1
1.2 研究範圍 2
1.3 研究方法 2
1.4 論文內容及架構 3
第二章文獻回顧 4
2.1 鹼質粒料反應（ALKALI-AGGREGATE REACTION）概論 4
2.1.1 定義 4
2.1.2 鹼-氧化矽反應發生機制 5
2.1.3 鹼-氧化矽反應之要素 7
2.2 鹼質粒料反應之特徵 15
2.2.1 特定的開裂(Cracking)模式 15
2.2.2 膨脹導致變形、相對位移 20
2.2.3 表面爆出(Pop-outs) 22
2.2.4 變色和膠體 24
2.3 預防鹼質粒料反應之方法 28
2.4 輔助膠結材 32
2.4.1 輔助膠結材對混凝土膨脹之影響 32
2.4.2 SCM控制ASR之機制 36
2.5 鹼質粒料試驗方法 39
2.5.1 ASR之粒料反應性試驗方法 39
2.5.2 ASR之抑制成效評估方法 44
2.5.3 試驗比較 44
2.6 降低鹼質粒料反應危害風險指引 (ASTM C1778 ) 47
2.6.1 處方法詳細流程 49
第三章研究方法 56
3.1 實驗規畫 56
3.2 實驗材料 58
3.2.1 水泥 58
3.2.2 粒料 58
3.2.3 輔助膠結材 61
3.3 實驗方法及步驟 64
3.3.1 加速水泥砂漿棒試驗 (ASTM C1260) 64
3.3.2 加速水泥砂漿棒膨脹抑制試驗 (ASTM C1567) 68
3.3.3 混凝土角柱試驗（ASTM C1293） 69
3.3.4 膨脹量測量 75
3.3.5 微觀分析 76
第四章試驗結果與討論 78
4.1 試驗結果 78
4.1.1 ASTM C1260、ASTM C1293試驗結果 78
4.1.2 ASTM C1567試驗結果 94
4.1.3 微觀分析結果 101
4.2 ASTM C1293、ASTM1260試驗結果之解讀 107
4.2.1 試驗結果與現地鹼質粒料案例之比較 108
4.2.2 試驗結果依粒料來源位置進行比較 111
4.2.3 試驗結果與前人試驗數值之比較 113
4.2.4 所選粒料對ASTM C1567之適用性 117
4.3 ASTM C1567試驗結果之解讀 124
4.3.1 建議使用之SCM最低取代量 124
4.3.2 不同SCM之試驗結果差異 127
4.4 ASTM C1778中性能基準法與處方法之比較 129
4.4.1 以和平溪、南澳溪所產粒料進行比較 131
4.4.2 以海岸山脈安山岩進行比較 132
第五章結論與建議 133
5.1 結論 133
5.2 參考文獻 135

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指導教授

田永銘(Yun-ming Tien)

審核日期

2017-1-25

推文