不同木粉对氯氧镁水泥水化放热特性的影响  

Effect of different wood powder on heat of hydration of Magnesium Oxychloride Cement

作　　者：黄皓哲[1] 马灵飞[1] 

机构地区：[1]浙江农林大学木材工程技术研究所,浙江临安311300

出　　处：《木材加工机械》2010年第5期18-21,28,共5页Wood Processing Machinery

摘　　要：以速生人工林木材杉木、杨木、马尾松和毛竹为原料,利用热导式测试仪研究了这些木粉对氯氧镁水泥24 h内水化历程和水化放热特性的影响。结果表明:掺入木粉的水泥试样24 h内水化历程可划分为4个阶段;杉木和马尾松木粉的掺入,缩短诱导期持续的时间,提高了水化开始时的放热速率,使放热峰的出现提前;杨木木粉的掺入对诱导期持续时间和放热峰的出现时间无明显影响;毛竹粉的掺入使诱导期延长,使放热峰滞后出现;4种木粉掺入的氯氧镁水泥24h内的累计水化放热总量比对照低些。The effect of different wood powders on the hydration process and heat of hydration of Portland cement during24 hours were studied.The results show that the hydration process of the sample containing different wood powders during 24 hours can be divided into four periods and the presence of Cunninghamia lanceolata and Pinus massoniana wood powders shortens duration of the dormant period,increases the rate of exothermic hydration in the early period,puts ahead the emergence of peak.The presence of populus Linn wood powders has no obvious effects on duration of the dormant period and the emergence of peak.The presence of Phyllostachys edulis wood powders extends duration of the dormant period and puts off the emergence of peak.The presence of the four wood powders decreases heat evolution during 24 hours.

关 键 词：木粉 氯氧镁水泥 水化热 

分 类 号：TS653[轻工技术与工程]