1.1 本指南涵盖了使用燃煤产品（CCP）设计和建造工程结构填料的程序，包括但不限于飞灰、底灰、锅炉炉渣或其他能够满足本文所述工程填料要求的CCP。CCP可单独使用或与土壤或其他合适材料混合使用，以达到所需的岩土特性。 1.2 本指南描述了独特的设计和施工注意事项，这些注意事项可能适用于使用CCPs建造的工程结构填料，这些CCPs已被充分描述为适合此有益用途。 1.3 符合本标准的CCP的有益利用保护了土地、自然资源和环境 1.4 本指南仅适用于主要由煤炭燃烧产生的CCP。 1.5 煤灰填充物的测试、工程和施工实践类似于天然土壤填充物的公认实践。 煤灰结构填料的设计应采用公认的工程实践。然而，当CCP用于池塘或蓄水等饱和条件时，可能需要考虑液化的可能性。 1.6 管理煤灰使用的法律法规因州而异。本指南的用户有责任确定并遵守适用的要求。 1.7 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.8 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。 1.9 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 概述: 4.1.1 许多CCP是工程结构填料施工的合适材料。CCP可用作:建筑场地和基础的结构填料；公路和铁路路堤、路基、堤防和堤防；以及任何其他需要压实填料的应用。其单位重量低、抗剪强度相对较高、易于搬运和压实，使CCP可用作填充材料。然而，这些材料的具体工程和环境特性可能因来源而异，必须针对工程结构填料所用的每种材料或材料组合进行评估。 指南中包含的信息 D5759 可能适用于工程结构填料中使用的一些CCP。AASHTO标准实施规程PP059-09-UL还涉及在路堤中使用燃煤飞灰。可用于特定工程结构填料的CCP类型的要求也可能因当地现场条件或填料的预期用途或两者而有所不同。第节讨论了环境因素 5. . 4.1.2 CCP可以是一种经济高效的填充材料。在许多地区，它们可以以合理的成本批量供应。CCP的使用节省了其他资源，并减少了购买、许可和操作取土坑所需的支出。CCP通常可以在接近最佳含水量的情况下交付至施工现场，与可比的天然材料相比，通常不需要额外的破碎、筛选或加工。 4.1.3 CCP的使用通过避免提取或开采土壤、骨料或类似填充材料来保护自然资源，这些材料也可以节约能源并减少温室气体排放。 4.1.4 受益使用的CCP的体积保留了宝贵的填埋空间。 4.2 监管框架: 4.2.1 联邦- 目前，没有联邦法规解决 有益使用 中央对手方清算所。州和地方司法机构对CCP管理和 有益使用 本国境内的活动 4.2.2 州和地方司法管辖区- 关于CCP使用的法律法规因州和地方管辖区而异。项目业主和设计师有责任确定与CCP使用有关的任何地方或州指导、政策或法规。

1.1 This guide covers procedures for the design and construction of engineered structural fills using coal combustion products (CCPs) including but not limited to fly ash, bottom ash, boiler slag or other CCPs that can meet the requirements of an engineered fill as described herein. CCPs may be used alone or blended with soils or other suitable materials to achieve desired geotechnical properties. 1.2 This guide describes the unique design and construction considerations that may apply to engineered structural fills constructed of with CCPs that have been adequately characterized as being suitable for this beneficial use. 1.3 Beneficial utilization of CCPs consistent with this standard conserves land, natural resources, and 1.4 This guide applies only to CCPs produced primarily by the combustion of coal. 1.5 The testing, engineering, and construction practices for coal ash fills are similar to generally accepted practices for natural soil fills. Coal ash structural fills should be designed using generally accepted engineering practices. However, when CCPs are used in saturated conditions such as ponds or impoundments, the potential for liquefaction may need to be considered. 1.6 Laws and regulations governing the use of coal ash vary by state. The user of this guide has the responsibility to determine and comply with applicable requirements. 1.7 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.8 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. 1.9 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 General: 4.1.1 Many CCPs are suitable materials for the construction of engineered structural fills. CCPs may be used as: structural fill for building sites and foundations; embankments for highways and railroads, road bases, dikes, and levees; and in any other application requiring a compacted fill material. Their low unit weight, relatively high shear strength, ease of handling, and compaction make CCPs useful as fill material. However, the specific engineering and environmental properties of these materials can vary from source to source and must be evaluated for each material, or combination of materials, to be used for an engineered structural fill. Information contained in Guide D5759 may be applicable to some CCPs to be used in engineered structural fills. AASHTO Standard Practice PP059-09-UL also addresses the use of coal combustion fly ash in embankments. The requirements for the type of CCPs that can be used for specific engineered structural fills may also vary because of local site conditions or the intended use of the fill, or both. Environmental considerations are addressed in Section 5 . 4.1.2 CCPs can be a cost-effective fill material. In many areas, they are available in bulk quantities at a reasonable cost. The use of CCPs conserves other resources and reduces the expenditures required for the purchase, permitting, and operation of a soil borrow pit. CCPs often can be delivered to a job site at near optimum moisture content and generally do not require additional crushing, screening, or processing as compared to comparable native materials. 4.1.3 Use of CCPs conserves natural resources by avoiding extraction or mining of soils, aggregates, or similar fill material that also conserves energy and reduces greenhouse gas emissions. 4.1.4 The volume of beneficially used CCPs preserves valuable landfill space. 4.2 Regulatory Framework: 4.2.1 Federal— Currently, there are no federal regulations addressing the beneficial use of CCPs. States and local jurisdictions have oversight of CCP management and beneficial use activities within their states 4.2.2 State and Local Jurisdictions— Laws and regulations regarding the use of CCPs vary by state and local jurisdictions. It is incumbent upon the project owner and designer to determine any local or state guidance, policies, or regulations pertaining to the use of CCPs.