The results showed that compressive strength of sand mixture was markedly raised by using the silane coupling agent which can improve the surface contact state between sand and the binder.

• 试验结果表明，硅烷偶联剂可以改善黏结剂与砂粒表面的接触状态，极大地提高碱酚醛树脂砂的黏结强度。