【摘要】 研究了石灰石粉及其与锂渣复合掺加对混凝土强度的影响。研究表明,石灰石粉掺量在10%以下时有利于抗压强度的发展,在20%以下时有利于抗折强度的发展。10%的石灰石粉和10%的锂渣复合显示出优良的复合效应,当单位水泥用量为464kg/m3时,7d抗压强度达到了105MPa。28d强度达到了124MPa,60d强度达到了132MPa。可代替矿渣、硅灰制备超早强高强超高强混凝土。更多还原

【Abstract】 The effect of super-fine limestone powder and lithium slag on the strength of c oncrete was studied in paper.Studies show that it is favorable to compressive st rength when the amount of limestone powder is below 10%and is favorable to flexu ral tensile strength when it is mixed into concrete below 20%. The compound of 1 0% limestone powder and 10% lithium slag can exert good effect. When cement cont ents are 464 kg/m3 , the compressive strength attained 105MPa at 7 days, 124MP a at 28 days and 132MPa at 60 days. This kind of additives can replace slag、sil ica to make super early-strength,high-strength concrete.更多还原