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由于膨胀土中含水量变化所引起的隆胀问题,已经试图应用加筋土原理解决。膨胀压力本身在各个方向上扩展,由于它作用在加筋上的法向分力,这将动用土和加筋接触面上的摩擦力。这说明了,这种摩擦力在平行于加筋的方向上抵销膨胀压力从而减少膨胀。有限的试验结果已经证实了上述的可能性。而且,也说明了,在膨胀土中,提供一个砂层包裹加筋,或者使用表面硬脂酸脂的加筋,可以增大摩擦系数。
The swelling problem caused by the change in water content in expansive soils has been attempted to be solved using the principle of reinforced soil. The expansion pressure itself expands in all directions, because it acts on the normal component of the reinforcement, which will use the friction on the soil and reinforced contact surfaces. This shows that this frictional force counteracts the expansion pressure in the direction parallel to the reinforcement and reduces the expansion. Limited test results have confirmed the above possibilities. Moreover, it has also been demonstrated that, in expansive soils, providing a sand layer for reinforcement, or the use of surface stearic acid for reinforcement, can increase the coefficient of friction.