Soluble salt content is one of the most basic and important characteristics of saline soils. It dominates the physical properties of saline soils and governs the selection of remedial measures on the sites. Failing to determine the total salt content of coarse-grained soils may bring potential salt-induced problems in railway and highway infrastructures. However, the existing measurement methods of salt content fail to determine the total salt content of gravel, consequently hindering the theoretical analysis of the mechanisms associated with salt content in the gravel. To address the need for determining the total salt content of gravel, a relationship between the partial and total salt content of gravel has been developed through a theoretical model, which has then been simplified to make it more readily applicable. Gravel samples with different types of soluble salts (sodium sulfate, sodium chloride, magnesium sulfate, and potassium chloride), fine pure soil content (15%, 25%, 35%, and 45%), and sieving attributes (sieve size = 1, 2, and 5 mm), were tested for partial salt content using ion chromatography. The test results show that the partial and total salt contents are significantly correlated, and that a sieve with a pore size of 5 mm exhibits the most conducive results. The occurrences of sodium sulfate and sodium chloride have limited influence on the distribution and measurement of each other as the total salt content is relatively small. The calculated ratio z of the salt passing rate to that of fine pure soil lies within a relatively narrow band with varying salt types, fine pure soil content, and sieve sizes. For a known partial salt content, the total salt content of the gravel can be approximately estimated by the theoretical model through empirical values of z, or more accurately predicted by the proposed new calibration method.

可溶性盐含量是盐渍土最基本，最重要的特征之一。它支配着盐渍土壤的物理特性，并控制着场地补救措施的选择。无法确定粗粒土壤的总盐含量可能会在铁路和公路基础设施中带来潜在的盐引发问题。然而，现有的盐分含量测量方法无法确定砾石的总盐分含量，因此妨碍了对与砾石中盐分含量相关的机理的理论分析。为了满足确定砾石总盐含量的需要，已经通过理论模型建立了砾石的部分盐含量和总盐含量之间的关系，然后对其进行了简化以使其更易于应用。含有不同类型的可溶性盐（硫酸钠，氯化钠，硫酸镁和氯化钾），纯净土壤细度（15％，25％，35％和45％）和筛分属性（筛分= 1）的碎石样品，2和5毫米）使用离子色谱法测试了部分盐含量。测试结果表明，部分和总盐含量显着相关，孔径为5 mm的筛网显示出最有利的结果。由于总盐含量相对较小，因此硫酸钠和氯化钠的出现对彼此的分布和测量的影响有限。计算比率 使用离子色谱法测试部分盐含量（5 mm和5 mm）。测试结果表明，部分和总盐含量显着相关，孔径为5 mm的筛网显示出最有利的结果。由于总盐含量相对较小，因此硫酸钠和氯化钠的出现对彼此的分布和测量的影响有限。计算比率 使用离子色谱法测试部分盐含量（5 mm和5 mm）。测试结果表明，部分和总盐含量显着相关，孔径为5 mm的筛网显示出最有利的结果。由于总盐含量相对较小，因此硫酸钠和氯化钠的出现对彼此的分布和测量的影响有限。计算比率盐通过率与纯净土壤的通过率z处于相对狭窄的范围内，具有不同的盐类，纯净土壤含量和筛子尺寸。对于已知的部分盐含量，砾石的总盐含量可以通过理论模型通过z的经验值近似估算，或者通过建议的新校准方法更准确地预测。