将废旧塑料薄膜与水泥经螺杆挤出机共混挤出制备圆柱状塑料骨料,以塑料骨料等体积取代水泥砂浆中的砂子,测试了塑料骨料对砂浆流动性、干密度、抗弯强度、抗压强度的影响,发现随塑料骨料掺量的增加,砂浆流动性提高、密度减小、抗弯强度和抗压强度降低,并且试样的密实度与强度之间存在良好的线性关系.与空白塑料骨料相比,共混了水泥的塑料骨料可以减小砂浆抗弯强度、抗压强度降低的幅度.
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