查詢結果分析
相關文獻
- 添加強塑劑及卜作嵐材料對水泥漿體早期行為之影響
- 添加強塑劑對水泥材料水化行為之影響
- 強塑劑添加時間對水泥吸附行為的影響
- 有機溶劑採樣中相對溼度對活性碳吸附管之影響
- 藥劑飽和點是混凝土使用強塑劑的關鍵因子
- 水泥與混凝土摻料簡介
- 活性碳纖布浸染銅離子及其對硫化氫吸附研究
- Adhesion and Adsorption of High Energy Wetting Colloids on Low Energy Polymers: Interfacial Thermodynamics versus Electrostatic Interactions
- Adsorption and Desorption of Lysozyme and Albumin to Cibacron Blue 3GA Using Gel Beads and Membrane Discs
- 超高層建築使用高性能混凝土之品質研究
頁籤選單縮合
題 名 | 添加強塑劑及卜作嵐材料對水泥漿體早期行為之影響=Effect of Superplasticizers on the Early Behavior of Cement Paste Containing Pozzolanic Materials |
---|---|
作 者 | 李釗; 郭文田; 陳忠元; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 11:3 1999.09[民88.09] |
頁 次 | 頁629-636 |
分類號 | 440.325 |
關鍵詞 | 強塑劑; 飽和點; 黏滯度; 吸附; Superplasticizer; Saturation point; Viscosity; Adsorption; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究藉進行迷你坍流面積、Marsh cone流動時間、黏滯度及吸附特性等試驗, 以探討強塑劑、卜作嵐材料對水泥漿體早期行為的影響。研究結果顯示,SNF和SMF強塑劑 的特性相似,在拌合後短時間內即可使漿體產生流動性,羧酸類強塑劑因作用機理不同,其 效益在 30min 後才顯現。水泥、卜作嵐材料強塑劑的吸附特性,與漿體的流動性有相當程度 的關係。迷你坍流度試驗和 Marsh cone 流動時間試驗可相互印證,即坍流度大,則 Marsh cone 流動時間減少。利用 Marsh cone 流動時間試驗,可量測 SNF 和 SMF 強塑劑的飽和 點,二者的飽和點均為 1.2%,羧酸類強塑劑因作用機理不同,不適合利用 Marsh cone 流 動時間試驗量測其飽和點。在各種不同卜作嵐材料使用策略中,以飛灰取代 15%、30% 水泥 會降低漿體的流動性。以水淬爐石粉取代 50% 水泥可增加漿體的流動性。 |
英文摘要 | This research is to study the effects of superplasticizers (SP) and pozzolanic materials on the early behavior of cement pastes by measuring the spread area of mini slump, the flow time of Marsh cone, and the rheological behavior of the pastes. The adsorption characteristics of SP on the cement, fly ash, and blast furnace slag particles are also investigated. Test results indicated that SNF and SMF SPs are equally effective in making the paste flowable within a few minutes. The polycarboxylic acid (PCA) SP added paste showed its flowability after 30 minutes of mixing. The flowability of the paste was closely related to the adsorption characteristics of SP on cement particles. A good correlation exists between the results of the mini slump test and these of the Marsh cone test. The increase in the spread area of the mini slump test was increased when the flow time was decreased in the Marsh cone test. The Marsh cone test was good for measuring the saturation points of SNF and SMF SPs both of which were 1.2%. It was not suitable for PCA SP. The use of fly ash to replace a portion of cement could reduce the flowability of the paste. However, the flowability was increased when blast furnace slag was used to replace 50% of cement. |
本系統中英文摘要資訊取自各篇刊載內容。