粉煤灰特性及其对气泡轻质土性能影响研究

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中图分类号：TU528.2 文献标志码：A 文章编号：1005-8249（2025）03-0028-08

DOI：10.19860/j.cnki.issn1005-8249.2025.03.006

Abstract：Thevariabilityinthequalityofflyashrestrictsthelarge-scalepromotionandapplicationofflyashlightweight foamedconcrete.Torevealtheefectsofflyashwithdiferenttypesandcontentsonthepropertiesoflightweightfoamed concrete，systematicallreviewsthe particlecharacteristics，chemicalcomposition，and pozzolanicactivityofflyash，and deeplydiscuses theactionmechanismsofflyashonthephysical，mechanical，anddurabilitypropertiesoflightweightfoamed concrete.Theresult show thatadinganappropriate amountofflyashcanreduce thewaterabsorption，drydensity，and porosityof lightweight foamed concrete，whichisbeneficialforimproving workabilityandpore structure.Aditionall，itcan furtherenhancetheunconfinedcompressive strength，sulfateresistance，and freze-thawresistance ofthe material.The findings establish a detabase to support extensive application offly ash in arated lightweight soil systems.

Key words：fly ash； lightweight foamed concrete；physical properties；mechanical properties；durability

0 引言

我国的能源消费结构以煤炭为主，煤炭行业每年产生大量的工业固废，其中粉煤灰占 70% 左右[1]粉煤灰的累计堆积量逐年增长，但综合利用率较低，未处理的粉煤灰占用大量土地资源且易造成大气污染，同时也是一种资源的浪费。（剩余12594字）