通过对再生粗骨料取代率为60％，分别掺入矿粉、粉煤灰以及矿粉与粉煤灰（1：1）双掺为10％，20％，30％的混凝土试件进行抗压强度试验，应用超声回弹检测其抗压强度，推出了超声回弹测强回归式，推动了再生混凝土无损检测技术的研究发展。%The paper undertakes the compressive strength test on the concrete specimen by mixing the mineral powder, the fly ash, and the min- eral powder and fly ash（ 1 ： 1 ） whose the double mixing are respectively 10% , 20% and 30%, and replacement ratio of regenerated coarse aggre- gate is 60%, adopts the supersonic rebound method to test its compressive strength, points out the strength-measuring regression equation, and the research development of the nondestruction test of the regenerated concrete.
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