泡沫轻质土抗冻性试验研究  

Experimental study on frost resistance of foamed lightweight soil

作　　者：李连志[1] 杨士斌 潘玲 王剑英[1] 周宪伟[1] Li Lianzhi;Yang Shibin;Pan Ling;Wang Jianying;Zhou Xianwei(Heilongjiang Institute of Technology,Harbin 150050,China;Ji-Hei Highway Shanhe to Harbin Section Project Office,Harbin 150001,China;Heilongjiang Highway Construction Cost Management Station,Harbin 150008,China)

机构地区：[1]黑龙江工程学院,黑龙江哈尔滨150050 [2]吉黑高速山河至哈尔滨段工程项目办,黑龙江哈尔滨150001 [3]黑龙江省公路工程造价管理总站,黑龙江哈尔滨150008

出　　处：《山西建筑》2021年第21期67-68,73,共3页Shanxi Architecture

基　　金：黑龙江省交通运输厅科技项目(2021年):泡沫轻质土在季冻区新建公路工程中的应用研究。

摘　　要：泡沫轻质土是一种具有闭孔孔结构的轻质多孔混凝土,通过试验研究,分析得出泡沫轻质土的冻融破坏主要由于冻融作用促使泡沫轻质土的开放孔隙周围发育出了新的裂隙,使试件内部原本封闭的孔隙与外部开放孔隙连通,增加了渗透路径,周而复始,这些裂隙逐渐发育,在泡沫轻质土内部形成大量连通的破裂面,最终发生破坏。并据此提出了泡沫轻质土在季冻区的工程应用对策,为泡沫轻质土在季冻区的应用提供参考。Foamed lightweight soil is a kind of lightweight porous concrete with closed pore structure.Through experimental research,it is concluded that the freeze-thaw damage of foamed lightweight soil is mainly due to the freeze-thaw effect,which promotes the development of new cracks around the open pores of foamed lightweight soil,so that the originally closed pores in the specimen are connected with the external open pores,and the permeability path is increased.From the beginning to the end,these cracks gradually develop,and a large number of connected fracture surfaces are formed inside the foamed lightweight soil,failure occurs.Based on this,the engineering application countermeasures of foamed lightweight soil in seasonal frozen area are put forward to provide reference for the application of foamed lightweight soil in seasonal frozen area.

关 键 词：泡沫轻质土 抗冻性 试验研究 

分 类 号：TU411[建筑科学—岩土工程]