| 1. | The result indicated that , mix the mineral mixture of fly ash , flag into concrete can optimize the concrete pore structure , improve the concrete compressive strength and impermeability , and along with the age increment the improvement become more obviously ; after saturated freezing and thawing , the concrete pore structure changed apparently , total porosity increased , macro porous quantity rapid increased , small pore quantity reduced , mean radius and most probable aperture increased ; and the more saturated degree , the more obviously destructive effect
研究表明:在混凝土中掺加粉煤灰、矿渣等矿物掺合料优化了混凝土的孔结构,提高了混凝土的抗压强度和抗渗性能,且随龄期的延长这种改善作用更加明显;饱水冻融后混凝土的孔结构变化明显,总孔隙率增加,大孔数量急剧增大,小孔数量减小,平均孔径和最可几孔径增大;且饱水程度越大,这种破坏作用越明显。 |
