不同掺量的粉煤灰对水泥土力学性能的影响  

Effect of Fly Ash Content on Mechanical Properties of Cemented Soil

作　　者：任素琴 

机构地区：[1]内蒙古交通设计研究院有限责任公司,内蒙古呼和浩特010010

出　　处：《筑路机械与施工机械化》2017年第1期39-42,共4页Road Machinery & Construction Mechanization

基　　金：国家自然科学基金项目(51308062)

摘　　要：为了研究粉煤灰掺量对水泥土强度的影响,对4组不同掺量的粉煤灰进行了无侧限抗压强度试验,并在水泥掺量和粉煤灰掺量均为9%的试样中掺入不同粒径的天然鹅卵石和破碎花岗岩,分析掺粉煤灰水泥土与砾石的联合作用。结果表明:随着粉煤灰掺量增大,无侧限抗压强度增大;当粉煤灰掺量高于水泥掺量,强度增长不明显;掺砾试样抗压强度大于未掺砾试样强度,且掺入天然鹅卵石试样比掺人工破碎灰岩强度低。In order to study the effect of fly ash content on the strength of cemented soil,the unconfined compressive strength tests were carried out on four sets of fly ash with different contents.The pebbles and crushed granite with different grain sizes were added to the samples that contain 9% of cement and 9% of fly ash to analyze the combined effect of cemented soil mixed with fly ash and gravel.The results show that with the increase of fly ash content,unconfined compressive strength increases;when the amount of fly ash is higher than the cement,the strength growth is not obvious;the compressive strength of gravel sample is greater than that of unbonded sample,and the strength of sample mixed with pebbles is lower than that with artificially crushed limestone.

关 键 词：水泥土 粉煤灰 砾石 掺量 

分 类 号：U414.1[交通运输工程—道路与铁道工程]