添加強塑劑對CFB副產石灰-水淬爐石粉膠結系統工作性影響之研究

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Title:	添加強塑劑對CFB副產石灰-水淬爐石粉膠結系統工作性影響之研究
Authors:	徐仲豪;Xu,Zhong-Hao
Contributors:	土木工程學系
Keywords:	CFB 副產石灰;水淬爐石粉;強塑劑
Date:	2015-01-27
Issue Date:	2015-03-16 15:08:13 (UTC+8)
Publisher:	國立中央大學
Abstract:	循環式流體化床鍋爐(Circulating Fluidized Bed Boiler，簡稱 CFB)，以燃燒石油焦來發電，為避免燃燒高含硫量之燃料產生硫氧化物之過量排放，故混合石灰石進行脫硫，其製程所產生之工業副產物，即為 CFB 副產石灰。本研究係添加三種不同強塑劑於 CFB 副產石灰-水淬爐石-水泥粉系統中，對水泥漿進行流度錐與迷你坍流度試驗，以尋求最佳之強塑劑與劑量。後續將此強塑劑應用於砂漿及混凝土，以了解強塑劑對於此一膠結系統中所能提供的工作性。另外為了改善凝結時間的問題，導入鹼活化系統於此類系統中。研究結果顯示，於水泥漿試驗中添加三種不同強塑劑於 CFB 副產石灰-水淬爐石粉系統，均能有效提升工作性，依各強塑劑的組成不同對此一系統的飽和點均不相同。三種強塑劑中以高分子聚合羧酸所提供之工作性最好，劑量在 0.55%時即達到飽和效果。後續添加高分子聚合羧酸 0.55% 於砂漿與混凝土進行試驗，試驗結果顯示 CFB 副產石灰-水淬爐石粉系統添加高分子聚合羧酸能有效提升工作性，其工作性趨近於 OPC 組。添加鹼活化能有效改善凝結時間之問題，並提升早期之抗壓強度。 ;Circulating Fluidized Bed (CFB) Boiler is a means of energygenerating process by burning petroleum coke. In order to avoid blazed petroleum coke with high sulfur content from emitting overdosed sulfur dioxide, limestone is introduced in the boiler for desulfuration. The residue collected from the boiler is called CFB Byproduct Lime. In this study, three different superplasticizers added to CFB byproduct lime - granulated blast furnace slag system, the proposed a technique to find the optimal dosage of superplasticizer with the flowing-slump and mini-slump test. Follow-up applied to mortar and concrete, in order to understand the superplasticizer for this system can provide workability. Furthermore, in order to improve the problem of setting time, the introduction of an alkaline-activated systems to such systems. The results show a superplasticizer added three different paste test in CFB byproduct lime - granulated blast furnace slag system can effectively enhance the work of, according to the composition of each superplasticizer a different saturation point of this system are not the same. Three superplasticizer plasticizers to the polycarboxyic acid sodium salt by the work of the best acid dose when 0.55% is reached saturation effect. Adding subsequent high polymer acid 0.55% in mortar and concrete test, the test results show CFB byproduct lime - granulated blast furnace slag acid polymer powder added to the system can effectively enhance the work of its working group of close to OPC.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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