针对云南典型红土,考虑掺合红土含量和养护时间的影响,通过比重、颗粒分析、直剪、压缩等试验,研究了掺合红土的物理和力学特性.试验结果表明:红土中掺入仿瓷粉、砂后,比重降低;随掺入含量的增大,红土颗粒中砂粒的含量逐渐增大,黏粒含量逐渐降低;红土中掺入还原铁粉后,比重显著增大,随掺入含量的增大,红土颗粒中砂粒的含量逐渐增大,黏粒含量逐渐降低.随掺入仿瓷粉含量的增加,养护时间的延长,总体上,红土的抗剪强度呈减小趋势,压缩系数呈增大趋势;随掺砂含量的增加,红土的抗剪强度呈增大趋势,压缩系数呈降低趋势,且变化存在一个合理的掺砂含量,尤其掺砂含量在10％～20％时,抗剪强度出现峰值,压缩系数出现谷值,养护时间对掺砂红土影响不明显.随掺入还原铁粉含量的增加,红土的抗剪强度逐渐增大、压缩系数逐渐减小,随养护时间的延长,其抗剪强度呈减小趋势,压缩系数没有明显的变化规律.%Yunnan typical laterite, considering the effect of blending laterite content and maintenance time, through specific gravity, grain composition, direct shea, compression test, the physical and mechanical properties of blending laterite is studied. The test results show that: the laterite mixed with Imitation ceramic powder, sand, specific gravity reduce, increase with the incorporation of the content, sand content of laterite particles gradually increasing, clay content gradually reduced. After the laterite blend in reduced iron powder, the significant increase in the specific gravity of laterite, with the incorporation of content increases, sand content of laterite particles gradually increasing, clay content gradually decreased . with the content of Imitation ceramic powder - doped increasing gradually extended maintenance time. Overall, latente shear strength of a decreasing trend, compression coethcient tended to increase, with the content of sand-doped increasing,Tended to increase the shear strength of laterite, the compression factor is decreasing, but there is a reasonable sand-doped content changes, especially sand-doped content in the range of 10% to 20% , shear strength emerge peak value,compression coefficient emerge valley value, the effect of maintenance time to sand -doped laterite is not obvious. With the content of reduced iron powder- doped increasing, the shear strength of the laterite is gradually increased, the compression coefficient is gradually reduced , increase of maintenance time, the shear strength of a decreasing trend, compression coefficient is not significant variation.
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