1.1 本规程涵盖了使用铸造砂作为路堤和结构填料的方法。 1.2 本实践包括建议的施工（第 5. )，压实控制（第 6. )和冻融耐久性（第 7. )实践。 1.3 工程师应意识到铸造砂是金属铸造行业的副产品。如果铸造砂用作替代路堤或填充材料，则可能适用各种地方、州/省/地区或国家/联邦环境法律和法规。建议铸造砂用户联系适当的环境监管机构，以确定可能存在的要求或限制。 1.4 本标准主要适用于绿色铸造砂，也通常适用于化学结合铸造砂。 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本实践提供了一组用于执行一个或多个特定操作的说明。本文件不能取代教育或经验，应与专业判断一起使用。并非本指南的所有方面都适用于所有情况。本ASTM标准不代表或取代必须根据其判断给定专业服务的充分性的谨慎标准，也不应在不考虑项目的许多独特方面的情况下应用本文件。本文件标题中的“标准”一词仅表示该文件已通过ASTM共识程序获得批准。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 与公路建设相关的土方工程为铸造业丢弃的绿色铸造砂的大量再利用提供了机会。本规程涵盖了使用铸造砂作为路堤和结构填料的方法和建议。 4.2 本规程描述了可能适用于铸造砂的独特施工注意事项。由于材料的特定成分和当地条件，行为可能会有所不同。 4.3 在路堤和结构填料中使用铸造砂可能受到地方、州/省/地区或国家/联邦法规的管制。应参考这些法规。

1.1 This practice covers methods to use foundry sand as embankment and structural fill. 1.2 This practice includes recommended construction (Section 5 ), compaction control (Section 6 ), and freeze-thaw durability (Section 7 ) practices. 1.3 The engineer should be aware that foundry sand is a by-product of metal casting industries. Various local, state/provincial/regional, or national/federal environmental laws and regulations may apply if foundry sand is used as an alternative embankment or fill material. It is advised that foundry sand users contact appropriate environmental regulators to determine what requirements or limitations may exist. 1.4 This standard primarily applies to green foundry sand and also generally to chemically bonded foundry sand. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Earthwork associated with highway construction provides an opportunity for high volume reuse of green foundry sands discarded by the foundry industry. This practice covers methods and recommendations to use of foundry sand as embankment and structural fill. 4.2 This practice describes the unique construction considerations that may apply to foundry sands. The behavior may vary due to specific composition of the material and local conditions. 4.3 The use of foundry sand in embankment and structural fill may be regulated by local, state/provincial/regional, or national/federal regulations. These regulations should be consulted.