Self-compacting　concrete　(SCC)　is　more　likely　to　crack　than　normal　concrete　due　to　its　greater　content　of　mineral　admixtures.　Wedge　splitting　method　was　used　in　this　work　to　conduct　fracture　tests　on　15　sets　of　SCC　specimens　and　one　set　of　normal　concrete　specimens,　and　the　fracture　behaviors　were　estimated　in　terms　of　double-K　fracture　parameters.　This　paper　focuses　on　the　influence　of　various　mineral　admixtures　on　SCC　fracturing,　including　cases　of　fly　ash　only,　fly　ash　and　slag,　and　fly　ash　and　silica　fume.　Results　showed　that　in　the　case　with　fly　ash　only,　the　initial　fracture　toughness　of　SCC　was　decreased　with　an　increase　in　the　admixture　content,　and　its　unstable　fracture　toughness　reached　the　highest　at　1.5534　MPa·m½　when　the　fly　ash　content　was　30%.　By　the　tests　with　two　admixtures,　total　admixture　content　of　30%　with　fly　ash-slag　proportion　of　3:7　was　a　condition　leading　to　the　best　fracture　property　of　SCC　with　an　unstable　fracture　toughness　of　1.7122　MPa·m½.　Doping　silica　fume　was　also　able　to　improve　the　fracture　property　of　SCC.　©　2017　All　right　reserved.