The　growth　of　construction　industry　has　escalated　demands　on　building　material　supplies,　leading　to　the　accumulation　of　construction　waste.　Addressing　these　issues,　our　study　proposes　a　novel　approach　that　utilizes　alkali　activation　and　slag　solid　waste　to　prepare　binary　geopolymer.　This　technique　notably　enhances　the　utilization　of　low-activity　recycled　powders,　which　are　typically　underutilized　from　construction　waste.　To　validate　its　engineering　applicability,　we　comprehensively　examine　how　recycled　powder　content　influences　the　properties　of　recycled　powder-slag　based　geopolymers　(RPSG),　employing　the　critical　factor　of　alkali　equivalent　for　property　regulation.　Our　research　primarily　focuses　on　investigating　drying　shrinkage　behavior　RPSG　and　elucidating　the　microstructure　through　XRD,　TG,　MIP,　and　SEM　analyses.　The　experimental　results　indicate　that　the　incorporation　of　RP,　due　to　its　higher　water　absorption　and　rougher　particles,　leads　to　a　decrease　in　the　workability　of　geopolymers.　The　presence　of　inert　quartz　and　calcite　in　the　RP　also　slows　down　the　hydration　reaction　rate,　resulting　in　a　looser　microstructure　and　increased　porosity.　This　diminishes　the　mechanical　properties　of　RPSG,　and　exacerbates　drying　shrinkage　and　mass　loss.　These　effects　become　more　pronounced　with　a　mix　proportion　exceeding　30　%.　At　a　40　%　mix　proportion,　the　flowability　of　RPSG　decreases　by　15.5　%,　the　28-day　compressive　strength　is　reduced　by　21.0　%,　and　the　drying　shrinkage　increases　by　39.26　%.　Although　raising　the　alkali　equivalent　can　improve　workability　and　mechanical　properties,　it　also　intensifies　drying　shrinkage　and　mass　loss.　An　alkali　equivalent　of　5　%　yields　the　best　overall　performance.　The　study　underscores　the　importance　of　maintaining　RP　content　below　30　%　and　selecting　a　suitable　alkali　equivalent　to　optimize　RPSG＇s　overall　performance.　©　2024　The　Authors