Foam　concrete　is　widely　used　in　the　construction　industry　due　to　its　low　weight,good　sound　insulation,heat　insulation,and　seismic　performance.　Traditional　foam　concrete　uses　cement　as　the　binder,which　results　in　high　carbon　emissions.　To　reduce　carbon　emissions,municipal　solid　waste　incineration　bottom　ash　(MIBA)is　partially　used　to　replace　cement　to　prepare　MIBA　foam　concrete　(MIBAFC).　Based　on　the　optimal　foaming　agent,alkali-activated　technology　is　further　used　to　improve　the　performance　of　foam　concrete.　The　effects　of　different　types　of　activators　on　the　mechanical　properties,water　absorption　rate,and　drying　shrinkage　of　MIBAFC　were　studied,and　the　microstructure　and　hydration　characteristics　of　alkali-activated　MIBAFC　were　tested　using　BSE,SEM,TG-DTG,and　XRD.　The　results　show　that　CaO+Na2　CO3(CN),NaOH　(NH),water　glass+K2　CO3(SK),and　water　glass　(NS)can　all　undergo　polymerization　reaction　with　the　active　components　such　as　SiO2　and　Al2　O3　in　MIBA,which　improves　the　degree　of　hydration　reaction　and　the　pore　structure　of　the　hardened　slurry.　This　significantly　improves　the　setting　time,water　absorption　rate,mechanical　properties,and　drying　shrinkage　of　MIBAFC.　Among　the　four　activators,NS　has　the　best　overall　modification　effect,while　CN　has　no　significant　effect.　©　2024　Cailiao　Daobaoshe/　Materials　Review.　All　rights　reserved.