溫度處理對水泥結合稻殼與木材粒片之複合漿體性質之影響

Effect of Temperature Treatment on the Properties of the Cement Bonded Composite from Rice Husk and Wood Particles

陳載永(Tsai-Yung Chen) ； 施志鴻(Chih-Hung Shih) ； 許逸玫(Yi-Mei Hsu)

《林產工業》 16卷2期 (1997/06) Pp. 249-264

https://doi.org/10.6561/FPI.1997.16(2).9

摘要

本研究之目的係探討溫度處理對利用水泥結合稻殼與木材粒片之影響，試驗範圍涵蓋溫度變化、材料及其重量配比、藥品摻加、與養生時間等對複合水泥漿性質之影響等，其結果摘要如下：依本文之材料混合比，木材水泥試體的終凝時間均超過CNS 785規定最大的600分鐘。在溫度23±1.7°C、相對濕度95%以上的恆溫恆濕室內養生之試體，其稻殼及木材粒片經過100°C熱水煮沸4小時者，可縮短其初凝和終凝時間。稻殼粒片經過熱水煮沸處理，明顯地可改善稻殼水泥試體的抗壓強度，並且以拌合水溫23±1.7°C添加1.5%氯化鈣之製造條件者，其強度最佳。重量配比（稻殼：木材：水泥）1：1：12稻殼－木材粒片水泥和（木材：水泥）1：6木材粒片水泥抗壓試體，在不同溫度養生28天後的強度高低順序為23±1.7°C＞38°C＞100°C＞65°C。抗壓強度以其材料分析，養生28天後稻殼水泥試體的強度，除了65°C和100°C水浴槽養生者外，在其它條件養生下之試體均較稻殼－木材粒片水泥者強度高。重量配比1：6，粒片未經熱水煮沸處理之木材粒片水泥試體抗壓強度，小於稻殼粒片水泥者。

關鍵字

複合水泥漿 ； 溫度處理 ； 初凝及終凝 ； 試體強度

並列摘要

The purpose of this study is to investigate the effect of temperature treatment on the cement bonded rice husk particles and wood particles. The test variable included curing temperature, materials and its mix proportions, chemicals admixtures, and curing time. The important results are summarized as: For the mix proportions adopted in the researches, all of the final setting times of cement bonded wood particles were longer than the maximum value of CNS (600 min.) The specimens were cured under 23±1.7°C (and a relative humidity of higher than 95%. The compressive strength of cement bonded rice husk and the wood particles that treat with the boiling water for 4 hours. The compressive strength of cement bonded rice husk particles would be improved obviously by the boiling treatment, and the maximum strength can be obtained by the mixing water of 23±1.7°C and the addition of 1.5% CaCl_2 .The 28 days comppressive strength of cement bonded rice husk-wood particles (mix proportion=1:1:12, rice husk:wood:cement) and cement bonded wood particles (mix proportion=1:6, wood:cement) for various curing temperature were found to be 23 ± 1.7°C ＞38°C ＞100°C ＞65°C ain series. All of the compressive strength of cement bonded rice husk particles specimen were higher than that of cement bonded rice husk-wood particles, except those cured at 65 °C and 100 °C in the water-bath. The compressive strength of cement bonded wood particles (weight ratio=1:6) are lower than that of the cement bonded rice husk particles.

並列關鍵字

Cement composite ； Temperature treatment ； Initial setting and final setting ； Compressive strength