USA SSURGO - Corrosion Potential for Concrete

Concrete, metals and other materials gradually deteriorate through chemical reactions with their environment. This process, known as corrosion, occurs slowly in some soils and more quickly in others. When in contact with the soil, concrete can deteriorate due to a chemical reaction between a base (concrete) and a weak acid (wet soil). This layer classifies soils with low, moderate, and high rates of corrosion of concrete based on the soil texture, organic content, pH, and chemical composition. For more information on the classification system, see the National Soil Survey Handbook Part 618.80 Guides for Estimating Risk of Corrosion Potential for Uncoated Steel. Dataset Summary Phenomenon Mapped: Corrosion of concrete Geographic Extent: Contiguous United States, Alaska, Hawaii, Puerto Rico, Guam, US Virgin Islands, Northern Mariana Islands, Republic of Palau, Republic of the Marshall Islands, Federated States of Micronesia, and American Samoa. Projection: Web Mercator Auxiliary Sphere Data Coordinate System: WKID 5070 USA Contiguous Albers Equal Area Conic USGS version (contiguous US, Puerto Rico, US Virgin Islands), WKID 3338 WGS 1984 Albers (Alaska), WKID 4326 WGS 1984 Decimal Degrees (Guam, Republic of the Marshall Islands, Northern Mariana Islands, Republic of Palau, Federated States of Micronesia, American Samoa, and Hawaii). Units: Three classes - low, medium, and high Cell Size: 30 meters Source Type: Discrete Pixel Type: Unsigned integer Source: Natural Resources Conservation Service Update Frequency: Annual Publication Date: December 2025 Data from the gNATSGO database was used to create the layer. This layer is derived from the 30m rasters produced by the Natural Resources Conservation Service (NRCS). The value for concrete corrosion is derived from the gSSURGO component table field Corrosion Concrete (corcon). The value in this layer is the dominant condition found within the map unit. What can you do with this layer? This layer is suitable for both visualization and analysis acrossthe ArcGIS system. This layer can be combined with your data and other layers from the ArcGIS Living Atlas of the World in ArcGIS Online and ArcGIS Pro to create powerful web maps that can be used alone or in a story map or other application. Read more in our blogs: Analyzing Soil Capability for Agriculture in the Living Atlas of the World Working with Soil Data from the Living Atlas in ArcGIS Pro Because this layer is part of the ArcGIS Living Atlas of the World it is easy to add to your map: In ArcGIS Online, you can add this layer to a map by selectingAddthenBrowse Living Atlas Layers. A window will open. Type "concrete corrosion" in the search box and browse to the layer. Select the layer then clickAdd to Map. In ArcGIS Pro, open a map and selectAdd Datafrom the Map Tab. SelectDataat the top of the drop down menu. The Add Data dialog box will open on the left side of the box, expandPortalif necessary, then selectLiving Atlas. Type "concrete corrosion" in the search box, browse to the layer then click OK. In ArcGIS Pro you can use the built-in raster functions or create your own to create custom extracts of the data. Imagery layers provide fast, powerful inputs to geoprocessing tools, models, or Python scripts in Pro. The ArcGIS Living Atlas of the World provides an easy way to explore many otherbeautiful and authoritative maps on hundreds of topics like this one. Questions? Please leave a comment below if you have a question about this layer, and we will get back to you as soon as possible.混凝土、金属及其他材料会随与周围环境发生化学反应而逐渐劣化，这一过程被称为腐蚀（corrosion）。在部分土壤中该进程进展缓慢，而在另一些土壤中则更为迅速。当混凝土与土壤接触时，会因碱性物质（混凝土）与弱酸（湿润土壤）之间的化学反应而发生劣化。本图层依据土壤质地、有机质含量、pH值及化学成分，将土壤的混凝土腐蚀等级划分为低、中、高三类。如需了解该分类体系的更多信息，请参阅《国家土壤调查手册》第618.80部分：《未涂层钢材腐蚀潜力风险评估指南》。 ### 数据集概览 制图覆盖现象：混凝土腐蚀 地理覆盖范围：美国本土、阿拉斯加、夏威夷、波多黎各、关岛、美属维尔京群岛、北马里亚纳群岛、帕劳共和国、马绍尔群岛共和国、密克罗尼西亚联邦和美属萨摩亚。 投影：Web墨卡托辅助球体（Web Mercator Auxiliary Sphere） 数据坐标系：针对美国本土、波多黎各、美属维尔京群岛采用WKID 5070（美国本土阿尔伯斯等面积圆锥投影，美国地质调查局版本）；针对阿拉斯加采用WKID 3338（WGS 1984阿尔伯斯投影）；针对关岛、马绍尔群岛共和国、北马里亚纳群岛、帕劳共和国、密克罗尼西亚联邦、美属萨摩亚及夏威夷采用WKID 4326（WGS 1984十进制度坐标系）。 分级单位：低、中、高三个等级 像元尺寸：30米 源数据类型：离散型 像元类型：无符号整数 数据源：美国自然资源保护局（Natural Resources Conservation Service, NRCS） 更新频率：年度更新 发布日期：2025年12月 本图层基于gNATSGO数据库的数据制作，源自美国自然资源保护局（NRCS）生成的30米分辨率栅格（raster）数据。混凝土腐蚀等级数值取自gSSURGO要素属性表中的Corrosion Concrete（corcon）字段，本图层中每个图斑的取值为该图斑内占主导地位的腐蚀等级。 #### 本图层可实现的应用场景 本图层适用于ArcGIS生态系统内的可视化与分析工作。您可将其与自有数据及ArcGIS世界生活地图集（ArcGIS Living Atlas of the World）中的其他图层在ArcGIS Online或ArcGIS Pro中进行融合，制作可独立使用、或用于故事地图及其他应用场景的专业Web地图。更多详情可参阅官方博客：《世界生活地图集中的农业土壤能力分析》《在ArcGIS Pro中使用生活地图集的土壤数据》。 由于本图层属于ArcGIS世界生活地图集（ArcGIS Living Atlas of the World）的一部分，您可轻松将其添加至地图中： 1. 在ArcGIS Online中：依次选择「添加」→「浏览生活地图集图层」，弹出窗口后在搜索框中输入"concrete corrosion"，找到目标图层后点击「添加至地图」即可。 2. 在ArcGIS Pro中：打开地图后，点击「地图」选项卡中的「添加数据」，在下拉菜单顶部选择「数据」，左侧弹出的添加数据对话框中，按需展开「门户」选项并选择「生活地图集」，在搜索框中输入"concrete corrosion"，找到目标图层后点击「确定」即可。在ArcGIS Pro中，您可使用内置栅格工具或自定义工具，对数据进行定制化提取。影像图层可为地理处理（geoprocessing）工具、模型或Python脚本（Python scripts）提供高效且强大的输入数据源。 ArcGIS世界生活地图集（ArcGIS Living Atlas of the World）还提供了便捷途径，可让您探索数百个主题下的众多优质权威地图，本图层即为其中一例。 如有疑问？请在下方留言，我们将尽快为您解答。