多元矿物掺合料对机制砂自密实混凝土性能的影响

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中图分类号：TU528 文献标志码：A 文章编号：2095-2945（2025）24-0073-05

Abstract：Self-compacting concreteis widelyusedinengineering practice，butduetoitslargeamountofcementitious materialsandstrictagregaterequirements，itspreparationcostishighInthisstudy，machine-madesandwasusedasraw materialtoprepareself-compactingconcrete.Atthesametime，theefectofmulti-componentsolidwastemineraladmixtureson theworkingperformanceandcompresivestrengthofmachine-madesandself-compactingconcretewasexplored，andthe corresponding microscopic mechanism wasanalyzedusing scaning electronmicroscope.Theresearchresultsshowthatading （20号 15% limestone powder +10% flyash +5% mineral powder to replace cement can effectively improve the working performance andcompresivestrengthofmachine-madesandself-compactingconcreteandimprovethecompactnessofthematrix.Thisstudy provides guidance for the application of mineral admixtures in machine-made sand self-compacting concrete.

Keywords：mineraladmixture;machine-madesand;self-compactingconcrete;workabilty；mechanicalproperty；microstructure

建材生产是建筑活动中最主要的碳排放来源之一，占整个建筑碳排放总量的 60% 以上。（剩余5199字）