短切纤维增强改性磷酸盐水泥抗折性能研究  

Study on the Flexure Properties of Short Fiber Reinforced Phosphate Concrete

作　　者：张文生[1] 张春华[1] 傅鑫[1] 陈曰东 

机构地区：[1]哈尔滨工业大学化工学院,黑龙江哈尔滨150001 [2]二炮驻哈尔滨地区军事代表室,黑龙江哈尔滨150030

出　　处：《化学与粘合》2011年第6期18-21,共4页Chemistry and Adhesion

基　　金：哈尔滨工业大学大学生创新性实验计划项目

摘　　要：分别采用短切碳纤维和短切玻璃纤维对磷酸盐水泥进行了增强改性研究。采用羧甲基纤维素溶液做分散剂使短切纤维在水泥基体中得到了很好的分散;通过凝结时间及抗折强度测试,研究了纤维种类与掺量对磷酸盐水泥性能的影响。结果表明,短切纤维的加入对磷酸盐水泥的凝结时间影响不明显;两种短切纤维的加入都使磷酸盐水泥的抗折强度显著提高,磷酸盐水泥的抗折强度随着纤维掺量的增加(0%～1.5%)而增加,其中当纤维加入量为1.5%时,碳纤维改性磷酸盐水泥的抗折强度达到13.1MPa,玻璃纤维改性磷酸盐水泥的抗折强度达到12.8MPa,分别比素磷酸盐水泥提高了34.0%和30.0%。两种短切纤维增强改性的磷酸盐水泥的性能都达到了实际道路修补材料的要求。The flexure properties of phosphate concrete reinforced with short earbon fber and short glass fiber were studied, respectively. Carboxymethyl cellulose （CMC） was used as the dispersant to make the short fiber disperse well in the phosphate concrete. Setting time and flexural strength test were used to study the influence of fiber＇s varieties and volume content on the flexure properties of phosphate concrete. The result showed that the addition of short carbon fiber or short glass fiber had little effect on the setting time of phosphate concretes; it was expected that the flexural strengths of modified phosphate concretes by buth two kinds of short carbon fiber and short glass fiber were greatly increased, and the flexural strength of phosphate concrete increased with the increasing of volume cunteut of short fibers （0%-1.5%）. When the volume content of short fibers was 1.5%, the flexural strength of short carbon fiber reinforced phosphate concrete was 13.1MPa, the flexural strength of short glass fiber reintforced phosphate concrete was 12.8MPa, increased by 34.0% and 30.0%, respectively, compared with normal phosphate concrete. The flexure properties of short carbon fiber and glass fiber hybrid reinforced phosphate concrete were up to the required standard of road repairing materials in fact.

关 键 词：磷酸盐水泥 短切纤维 增强改性 凝结时间 抗折强度 

分 类 号：TU528.042[建筑科学—建筑技术科学]