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研究生：	阮黃明 Nguyen, Minh
論文名稱：	鹼激發稻殻灰膠结材之製程與性質 Manufacturing Process and Properties of Alkaline Activated Binders Made from Rice Husk Ash
指導教授：	黃忠信 Huang, Jong-Shin
學位類別：	碩士 Master
系所名稱：	工學院 - 土木工程學系 Department of Civil Engineering
論文出版年：	2019
畢業學年度：	108
語文別：	英文
論文頁數：	106
外文關鍵詞：	Rice husk ash, alkaline activated, binder, burning rice husk, amorphous silica, crystalline silica
相關次數：	點閱：180 下載：1
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Annular huge amount of waste rice husk becomes a severe ecology and environment problem that the Vietnam government has to deal with. Rice husk is the byproduct of agricultural paddy milling. Normally, it takes a long time for waste rice husk to decompose at ambient temperature. People in some regions of southern Vietnam, have trouble of lots of waste rice husk dumped arbitrarily in agricultural fields. The amount of waste rice husk is significantly increased after harvesting of crops, limiting the space available to living animals and human beings. Meanwhile, the emission of large amount of carbon dioxide in cement industry could lead to the greenhouse effect on earth. When both ecology and environment problems are taken into account, the feasibility for the replacement of Portland cement by using rice husk in the production of Portland cement binders needs to be investigated in detail. Because high proportion of silica is contained in waste rice husk, it can be used as a raw material in the production of alkaline activated binders. By conducting a series of tests, the most suitable burning temperature for making rice husk ash and the appropriate alkaline activator for producing alkaline activated binders were experimentally obtained. It is found that the burning temperature of 700oC is preferred to make the alkaline activated binder with the highest compressive strength when 100g rice husk is placed inside a sintering furnace with a volume of 0.174 m3. Besides, the most appropriate alkaline activator is AE%= 3.5%, Ms=0.8 and W/C=0.2 while the adequate mixing time is 5 minutes.

Abstract	I
Acknowledgements	II
Table of Content	IV
List of Tables	VII
List of Figures	IX
Chapter 1 INTRODUCTION	1
1.1	Problem statement	1
1.2	Aim of research	3
1.3	Scope of the research	4
1.4	Dissertation outline	5
Chapter 2 LITERATURE REVIEW	7
2.1	Alkaline activated binder	7
2.2	Burning process for rice husk ash	9
2.3	Chemical reaction in burning rice husk with enough oxygen	10
2.4	Chemical reaction in burning rice husk without enough oxygen	11
2.5	Mechanisms of alkaline activated reaction	12
2.5.1	Destruction	12
2.5.2	Condensation	13
2.5.3	 Crystallization	14
2.6	Effect of burning method	14
2.7	Alkaline activated reaction	17
2.7.1	Alkaline activated solution	17
2.7.2	Solid ingredient	20
Chapter 3 EXPERIMENTAL PROGRAM	28
3.1.	Summary of experiment	28
3.2.	Materials and equipment	29
3.2.1 Experimental materials	29
a. Rice husk ash	29
b. Blast-furnace slag	30
c. Sand	30
d. Sodium silicate (Na2SiO3)	31
e. Sodium hydroxide	31
f. Mixing water	31
3.2.2 Experimental equipment	32
a. High temperature sintering furnace	32
b. Sieves	32
c. Electronic scale	33
d. Electronic mixer	33
e. Cubic Mold	34
f. Mechanical testing machine	34
3.3.	Prepare group of sample	34
3.3.1 Alkaline activated specimens from different burning weight of rice husk ash	35
3.3.2. Alkaline activated specimens from different burning temperature of rice husk	36
3.3.3. Alkaline activated specimens from different proportion of rice husk ash	38
3.3.4. Alkaline activated specimens from different mixing time	39
3.3.5. Alkaline activated specimens from different particle size of rice husk	41
3.3.6. Alkaline activated specimens from different AE%	42
3.3.7. Alkaline activated specimens from different W/B	43
3.3.8. Alkaline activated specimens from different Ms	45
3.3.9. Effect of AE% on late compressive strength	46
3.4.	Experimental process	47
3.4.1. Preparation of alkaline activator solution	48
3.4.2. Preparation for solid ingredients	49
3.4.3. Manufacture of specimens	49
3.4.4. Compression test	50
Chapter 4 RESULT AND DISCUSSION	61
4.1.	Different burning amount of rice husk	61
4.2.	Different burning temperature	64
4.3.	Different proportion of RHA	66
4.4.	Different mixing time	68
4.5.	Different particle size	70
4.6.	Different AE%	71
4.7.	Different W/B	73
4.8.	Different Ms	75
4.9.	Effect of AE% on late compressive strength	76
Chapter 5 CONCLUSIONS AND SUGGESTION	86
5.1.	Conclusions	86
5.1.1 Burning method of rice husk ash	86
5.1.2 Alkaline activated solution	87
5.1.3 Alkaline activated rice husk ash binder	88
5.2.	Suggestion for further research	88
References	90
                                    

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