It is shown that the strength and water-resistance of the soil are largely improv ed through the laboratory test.The field test shows that the mud pumping of roadbed is effectively abated.

• 对改良土样的抗水性及强度室内试验表明，改性脲醛树酯能够显著提高土体的强度及抗水性，对翻浆冒泥路基基床的现场灌浆试验表明，改性脲醛树酯能够明显减少基床的翻浆冒泥病害。