镍渣改性橡胶水泥砂浆性能试验研究

打开文本图片集

中图分类号：TU528 文献标志码：A 文章编号：1005-8249（2025）02-0037-07

DOI： 10.19860/j.cnki.issn1005-8249.2025.02.007

Abstract：Theefectsof nickel slagonthemechanicalproperties，durability，andmicroscopicpropertiesofrubberparticle cement mortarwasstudiedbyartificial aceleratedaging，nano-indentation，RCMandother testing methods.Theresults showedthattheadditionofnickel slagandacceleratedagingcanimprove thecompressvestrength，flexural strength， compressionbendingratio，anddynamic elastic modulus of rubbercement mortar，andaceleratedaging hasasignificant mpact onthe dynamic elastic modulusof high rubbercontentcementmortar；Nickelslagcan improve the wearresistanceof rubber cement mortar. When the volume fraction of nickel slag is 5 % and the volume fraction of rubber is 1 5 % ，the length of the grindingpit is minimized；Nickelslagimprovesthelasticmodulusandhardnessofthemicro interfaceareaofrubbercement mortar，enhancingthe micro mechanical propertiesof theinterfacearea；Nickelslag hasagoodrestrainingefectontheearlydryingshrinkageofrubbercementmortar，andalsohelpstoimprovetheresistanceofcementmortartochlorideionpenetration. When the volume fraction of nickel slag is 1 5 % and the volume fraction of rubber particles is 5 % ，the chloride ion diffusion coefficient of cement mortar is the smallest.

Key words：nickel slag；modification；rubber cement mortar；nano-indentation；artificial accelerated aging

0 引言

镍渣是电炉工艺生产镍合金时产生的固废，其主要成分为 、 M g O 、 等，综合利用率不高。（剩余7558字）