Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/66155
標題: 石膏結合農林廢料複合材之研究
Study on Gypsum Bonded Agro-Forest-Waste Composites
作者: 徐俊雄
Hsu, Chun-Hsiung
關鍵字: Gypsum;石膏;Agro-Forest-Waste;Hydration;Hydration Temperature;Composite;Betel-nut particles;農林廢料;水合作用;水合溫度;複合材;檳榔幹粒片
出版社: 森林學系
摘要: 
【摘要】
1. 本研究以農林廢料為原料,且以熟石膏(Plaster)為結合劑,製作石膏結合農林廢料複合材。測試純石膏漿之水合溫度,結果顯示其水合作用時間完成在40∼53min之間,而水合溫度高峰範圍為47℃∼55℃。而石膏的水合現象,可分為4階段;A.鑄型時間需1′14〞,B.初凝時間需22′55〞,C.外觀凝結時間需39′37〞,D.終凝時間需52′18〞,石膏漿之含水率也逐漸從A階段之73.39%降到D階段之17.92%。水合溫度隨水膏比之降低及石膏漿計量之增加而上升。
2. 不同等級的石膏其水合作用最高溫度分別為TST:55℃,TSG:54℃及SSS:52℃。農林廢料粒片與石膏混合比愈高者,水合溫度愈低,甚至會延長水合作用時間。
3. 農林廢料與石膏之混合比為5:95(5%)、15:85(15%)及25:75(25%)三種,圓柱試體(直徑7㎝、用量150g、水膏比0.65)之水合溫度結果顯示,水合作用最迅速進行者為稻殼粒片(38∼58min、水合溫度43℃∼50℃),其次為木材粒片(64∼119min、水合溫度40℃∼52℃),再其次者為竹材鉋花型粒片(115∼125min、水合溫度45℃∼53℃),最緩慢者是檳榔幹粒片(75∼195min、水合溫度39℃∼45℃)。且熟石膏用量愈多,其水合溫度愈高。
4. 材料複合後之彎曲強度因混合比或農林廢料種類不同而異。石膏結合農林廢料複合材之最佳混合比為木材粒片佔15%之混合比其彎曲載重(34.15 kgf)最高。而稻殼粒片則以5%之混合比為佳,其彎曲載重最大,載重值為27.17 kgf。同時竹材鉋花型粒片亦以混合比5%最佳,其最大彎曲載重為33.21 kgf。石膏結合檳榔幹粒片之最大彎曲載重為38.54 kgf,其檳榔幹粒片佔15%。
5. 所有成板耐燃性質均通過建築物室內裝修材料之耐燃性試驗法的耐燃Ⅱ級測試。

【英文摘要】
1. In this study manufacture the gypsum bonded agro-forest-waste composites, the raw material is agro-forest-waste and the plaster is used as binder. To take the examine their hydration temperature of pure gypsum slurry, the results showed the hydration time between 40 and 53 minute, the peak temperature 47℃∼55℃. As to testable the hydration phenomenon, can be differentiate defined as 4 steps: A-stage is the forming time that need used to 1′14〞, B-stage is the start-bonding time that need used to 22′55〞, C-stage is the surface-curing time that need used to 39′37〞, D- stage is the end-bonding time that need used to 52′18〞, the moisture content of gypsum slurry showed 73.4% at A-stage and 17.92% at D-stage. The hydration temperature increased when the Water-Gypsum Ratio decreased and the slurry amount increased.
2. The changing of the hydration temperature depended on the gypsum kinds, the TST is 55℃, the TSG is 54℃ and the SSS is 52℃.
3. There are three kinds of mixed ratio as 5:95(5%), 15:85(15%) and 25:75(25%) from agro-forest-waste to gypsum, the cylinderic testing samples (diameter: 7 cm, amount: 150g, Water-Gypsum Ratio: 0.65) the hydration temperature of showed that rice hull particles is the fastest one for hydration (38 to 58 minute, the hydration temperature between 43℃ and 50℃), The second one is wood particles (64 ∼ 119 minute, the hydration temperature 40℃ ∼ 52℃), The third one is the bamboo shaving particles (115 ∼ 125 minute, the hydration temperature 45℃ ∼ 53℃), and the last one is the betel-nut stem particles (75 ∼ 195 minute, the hydration temperature 39℃∼ 45℃). The hydration temperature increased when the slurry amount increased.
4. The bending strength of composites depended on the species of agro-forest-waste and the Water-Gypsum Ratio. The mixed-ratio of the wood particles to gypsum 15% showed the best bending strength (34.15 kg), when the mixed-ratio of rice hull particles, bamboo shaving particles and betel-nut particles to gypsum were 5%, 5% and 15% respectively, their maximal loading showed 27.17 kgf, 33.21 kgf and 38.54 kgf respectively.
1. All agro-forest-waste composites could pass the as NO.Ⅱ of method of test for incombustibility of interior finish material of buildings.
URI: http://hdl.handle.net/11455/66155
Appears in Collections:森林學系

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