摘要
经氢氧化钠(NaOH),四氯化碳(CCl4),聚乙烯醇(PVA)三种溶液改性后的橡胶颗粒加入到水泥砂浆中可改善橡胶颗粒与水泥基体的界面,使橡胶颗粒在水泥砂浆中达到较好的使用效果.试验研究表明,CCl4溶液改性的效果较好,其次是NaOH饱和溶液.综合考虑压折比、抗冲击性能和经济性等因素,在工程中建议使用NaOH饱和溶液对橡胶颗粒进行改性.NaOH饱和溶液改性的40目橡胶颗粒掺量为20%时橡胶集料水泥砂浆的力学性能最好.
Adding rubber particles modified by the sodium hydroxide （NaOH） saturated solution, carbon tetrachloride （ CC1a ） and polyvinyl alcohol （PVA） to cement mortar can improve the interface between rubber particles and cement matrix, and make better use of rubber particles in cement mortar. Experimental studies show that CC14 solution has a better effect on modification, and NaOH saturated solution is in the next place. Taking the C/F, impact resistance and economy, etc. , into consideration, it is recommended that NaOH saturated solution be used to modify the rubber particles in engineering. The mechanical properties of crumb rubber cement mortar are the best when the content of 40 mesh rubber particles modified by NaOH saturated solution is 20%.
出处
《内蒙古科技大学学报》
CAS
2013年第1期84-87,共4页
Journal of Inner Mongolia University of Science and Technology
基金
内蒙古自然科学基金资助项目(2011MS0716)
内蒙古科技大学创新基金资助项目(2010NC053)
关键词
橡胶颗粒改性
砂浆
力学性能
抗冲击性
modified rubber particles
mortar
mechanical properties
impact resistance
