粉煤灰特性及其對(duì)氣泡輕質(zhì)土性能影響研究

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中圖分類號(hào)：TU528.2 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：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

我國(guó)的能源消費(fèi)結(jié)構(gòu)以煤炭為主，煤炭行業(yè)每年產(chǎn)生大量的工業(yè)固廢，其中粉煤灰占 70% 左右[1]粉煤灰的累計(jì)堆積量逐年增長(zhǎng)，但綜合利用率較低，未處理的粉煤灰占用大量土地資源且易造成大氣污染，同時(shí)也是一種資源的浪費(fèi)。（剩余12594字）