三峡风化砂压实质量快速控制图的制作与应用

Drawing and Application of Compacting Quality Control Figure for San Gorge Weathered Sand

三峡风化砂由花岗岩风化而成，由于风化程度不一，其颗粒级配不稳定，属不均匀性材料。通过对风化砂击实试验研究，建立了风化砂击实最大于密度ρdmax与粗粒（粒径＞5mm）含量ρ5的数学模型，并以此为基础建立了压实度D、现场干密度ρd、ρ5三因素关系图（即压实质量控制图），经过三年来的工程实际应用，该图查阅快捷、准确，为快速机械化施工创造了条件。

The weathered sand is weathered from the granite in the San GOrge. Because of the different weathered degrees and the unstable particulate grade, it belongs to a kind of inhomogeneous material. The mathematical model for its maximum dry unit weight ρd max and the content ρ5 of coarse particle is established through the compacting test on the weathered sand. The figure of the three-factors, namely, compactnessd D, in - situ dry density ρd and content ρ5 of coarse particle is given. Through the engineering application in the past three years the good result has been obtained.