海砂的鉴定方法研究  

Research on the identification methods of sea sand

作　　者：沈平 SHEN Ping(China Certification&Inspection Group Fujian Co.,Ltd.,Fuzhou 350015,China)

机构地区：[1]中国检验认证集团福建有限公司,福州350015

出　　处：《实验室检测》2024年第9期111-114,共4页Laboratory Testing

摘　　要：目的开发一种科学的海砂鉴定方法,以区分海砂与河砂。方法通过海砂的感官特征、显微特征、化学和物理特征、方量测量等方法对海砂进行定性和定量分析。结果化学分析表明,海砂有别于河砂,具有高氯化物含量(≥0.01%)、高贝壳含量(≥0.1%)的特点;物理特性检测发现海砂的电导率显著高于河砂;定量分析方面,本研究提出的海砂重量计算方法,相对偏差在0.25%~0.87%,此偏差值已接近汽车衡重允许±0.3%的误差。结论本研究提出的鉴定方法能快速、有效地辨别海砂,对于确保建筑材料安全性具有重要意义。Objective To develop a scientific method for identifying sea sand to differentiate it from river sand.Methods Qualitative and quantitative analysis of sea sand is conducted through its sensory characteristics,microscopic features,chemical and physical properties,and volumetric measurement methods.Results The chemical analysis shows that sea sand is different from river sand with high chloride content(≥0.01%)and high shell content(≥0.1%).The electrical conductivity of sea sand is significantly higher than that of river sand.In terms of quantitative analysis,the relative deviation of the sea sand weight calculation method proposed in this study is 0.25%~0.87%,which is close to the allowable error of±0.3%of the truck scale.Conclusion The identification method proposed in this study can quickly and effectively distinguish sea sand,which is of great significance in ensuring the safety of building materials.

关 键 词：海砂 河砂 氯化物 电导率 测量 

分 类 号：TU521.1[建筑科学—建筑技术科学]