石灰石取代矿粉在路面基层水泥中的应用研究  

Study of Limestone Replacing Mineral Powder in the Cement for Road Base

作　　者：周晖 毛琛琛 王彩萍[2] 周明凯[2] 陆科奇 

机构地区：[1]衢州市交通工程质量安全监督站,衢州市324000 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉市430070 [3]中交三公司第一工程有限公司,北京市100012

出　　处：《公路》2015年第3期177-180,共4页Highway

摘　　要：利用石灰石等质取代矿粉制备路面基层专用水泥,研究了石灰石的掺量对路面基层专用水泥的凝结时间、胶砂流动度、力学性能和胀缩特性的影响。结果表明：适量石灰石的掺入对改善水泥的各项性能指标均有一定的作用。石灰石的掺量在0-6%的范围内可有效延长水泥的凝结时间;石灰石在掺量为4%的条件下,不仅可以小幅提升水泥的抗压强度,且可以有效改善水泥的膨胀性能。In order to replace the mineral powder by equivalent quality of limestone for preparing the special purpose cement for road base,the impact of limestone＇s dosage on setting time,fluidity,strength and swell-shrink characteristics of cement are studied.The results show that proper addition of some limestone can improve various indexes of cement;the setting time of the special purpose cement for road base is extended when the addition of lime stone ranges 0-6%;and when the addition of limestone is 4%,both the compressive strength and the swell-shrink property can be correspondingly enhanced slightly and significantly.

关 键 词：石灰石 路面基层专用水泥 凝结时间 力学性能 胀缩特性 

分 类 号：U414.01[交通运输工程—道路与铁道工程]