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通过正交试验方法,研究掺砂量、砂的细度模数、水泥掺入比和土样含水率等因素对水泥砂浆桩无侧限抗压强度的影响,分析各因素的敏感性及各水平的效应。试验结果表明,水泥掺入比敏感性最大,其次是含水率,较小的是砂的细度模数和掺砂量。水泥砂浆桩无侧限抗压强度随着水泥掺入比的增大而增大,随着含水率增大而减小,掺砂量存在一个最优值。
By orthogonal test, the effects of sand content, fineness modulus of sand, cement mixing ratio and soil moisture content on unconfined compressive strength of cement mortar piles were studied, and the sensitivity of each factor Horizontal effect. The test results show that cement incorporates the most sensitive, followed by the moisture content, the smaller is the fineness modulus of sand and sand content. The unconfined compressive strength of cement mortar piles increases with the increase of cement incorporation ratio, decreases with the increase of water content, and there is an optimum value of sand incorporation.