1.1 本试验方法涵盖了土壤石灰和其他石灰处理材料的实验室压实试样的制备、养护和测试程序( 注1 )用于确定无侧限抗压强度。根据直径与高度之比，为在最大单位重量和最佳含水量下制备的试样，或为在其他目标单位重量和含水量水平下制备试样，制定了两种确定压实土-石灰混合物无侧限抗压强度的程序。其他应用见第节 5. 关于意义和用途。 注1: 除商用生石灰和熟石灰外，石灰基产品也用于细粒粘性土壤的石灰处理。石灰窑粉尘（LKD）通过旋风除尘器、静电除尘器或袋式除尘系统从窑废气中收集。一些石灰生产商将LKD和生石灰的各种混合物水合以生产石灰- 基于产品。 1.2 土壤石灰取芯试样应按照试验方法进行试验 D2166/D2166米 . 1.3 提供了两种替代程序: 1.3.1 程序A描述了制备和测试高径比在2.00和2.50之间的压实土-石灰试样的程序。该试验方法提供了抗压强度的标准测量方法。 1.3.2 程序B描述了使用试验方法制备和测试压实土-石灰样品的程序 D698 压实设备和模具通常可用于大多数土壤测试实验室。程序B被认为提供了一组试样中单个试样的相对测量值，而不是标准抗压强度值。由于圆柱体的高径比（1.15）较小，因此程序B确定的抗压强度通常大于程序A确定的强度。 1.3.3 使用程序B进行的无侧限抗压强度试验的结果不应与使用程序A获得的结果直接进行比较。 1.4 所有观测值和计算值应符合实践中制定的有效数字和四舍五入指南 D6026 . 1.4.1 本标准中用于规定如何收集、计算或记录数据的方法与数据在设计或其他用途中应用的准确性或两者都不直接相关。如何应用使用本标准获得的结果超出了其范围。 1.5 石灰并不是对所有土壤都有效的稳定剂。一些土壤成分，如硫酸盐、磷酸盐、有机物等，会对土壤-石灰反应产生不利影响，并可能影响使用该方法的测试结果。 1.6 单位-- 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1.6.1 处理英寸磅单位时使用英寸磅单位的重力系统。在这个系统中，磅（lbf）表示力（重量）的单位，而质量的单位是蛞蝓。除非涉及动态（F=ma）计算，否则未给出合理的段塞单元。 1.6.2 工程/建筑行业的常见做法是同时使用磅来表示质量单位（lbm）和力单位（lbf）。这隐含地结合了两个独立的单位系统；即绝对系统和引力系统。在一个标准中同时使用两套独立的英寸磅单位在科学上是不可取的。如前所述，本标准包括以英寸-磅为单位的重力系统，不使用/表示段塞质量单位。但是，使用天平或天平记录质量磅（lbm）或以lbm/ft为单位记录密度 3. 不应被视为不符合本标准。 1.7 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 有关具体的预防说明，请参阅第节 8. . 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 对土-石灰试样进行压缩试验，以确定固化土-石灰-水混合物的无侧限抗压强度，从而确定混合物是否适用于路面基层和底基层、稳定路基和结构填料等用途。 5.2 抗压强度数据用于土壤-石灰混合料设计程序:( 一 )以确定添加石灰后土壤的强度是否会显著增加；( b )将土壤-石灰混合物分为强度等级；( c )研究石灰百分比、容重、含水量、养护时间、养护温度等变量的影响。；和 d )以估计土壤-石灰混合物的其他工程性质。 5.3 石灰通常分为钙质或白云质。通常在土壤稳定中，使用高钙石灰[CaO]或白云质石灰[CaO+MgO]。石灰从氧化物转变为氢氧化物形式[[Ca（OH） 2. 或[Ca（OH） 2. +Mg（OH） 2. ]]通过在土壤、泥浆罐或制造设施中添加水。石灰可以提高粘性土的强度。石灰的类型与土壤类型相结合会影响最终的抗压强度。 注2: 执行此测试方法的机构可以根据实践进行评估 D3740 尽管本方法中有关于精度和偏差的说明:本试验方法的精度取决于执行人员的能力以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常被认为能够胜任和客观的测试。该试验方法的使用者应注意遵守规程 D3740 本身并不能确保可靠的测试。可靠的测试取决于许多因素；实践 D3740 提供了评估其中一些因素的方法。

1.1 This test method covers procedures for preparing, curing, and testing laboratory-compacted specimens of soil-lime and other lime-treated materials ( Note 1 ) for determining unconfined compressive strength. Depending on the diameter to height ratio, two procedures for determining the unconfined compressive strength of compacted soil-lime mixtures have been developed for specimens prepared at the maximum unit weight and optimum water content, or for specimens prepared at other target unit weight and water content levels. Other applications are given in Section 5 on Significance and Use. Note 1: Lime-based products other than commercial quicklime and hydrated lime are also used in the lime treatment of fine-grained cohesive soils. Lime kiln dust (LKD) is collected from the kiln exhaust gases by cyclone, electrostatic, or baghouse-type collection systems. Some lime producers hydrate various blends of LKD plus quicklime to produce a lime-based product. 1.2 Cored specimens of soil-lime should be tested in accordance with Test Methods D2166/D2166M . 1.3 Two alternative procedures are provided: 1.3.1 Procedure A describes procedures for preparing and testing compacted soil-lime specimens having height-to-diameter ratios between 2.00 and 2.50. This test method provides the standard measure of compressive strength. 1.3.2 Procedure B describes procedures for preparing and testing compacted soil-lime specimens using Test Methods D698 compaction equipment and molds commonly available in most soil testing laboratories. Procedure B is considered to provide relative measures of individual specimens in a suite of test specimens rather than standard compressive strength values. Because of the lesser height-to-diameter ratio (1.15) of the cylinders, compressive strength determined by Procedure B will normally be greater than that by Procedure A. 1.3.3 Results of unconfined compressive strength tests using Procedure B should not be directly compared to those obtained using Procedure A. 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . 1.4.1 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope. 1.5 Lime is not an effective stabilizing agent for all soils. Some soil components such as sulfates, phosphates, organics, etc. can adversely affect soil-lime reactions and may affect the test results using this method. 1.6 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.6.1 The gravitational system of inch-pound units is used when dealing with inch-pound units. In this system, the pound (lbf) represents a unit of force (weight), while the unit for mass is slugs. The rationalized slug unit is not given, unless dynamic (F = ma) calculations are involved. 1.6.2 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass (lbm) and of force (lbf). This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this standard includes the gravitational system of inch-pound units and does not use/present the slug unit for mass. However, the use of balances or scales recording pounds of mass (lbm) or recording density in lbm/ft 3 shall not be regarded as non-conformance with this standard. 1.7 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. For specific precautionary statements, see Section 8 . 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 ====== 5.1 Compression testing of soil-lime specimens is performed to determine unconfined compressive strength of the cured soil-lime-water mixture to determine the suitability of the mixture for uses such as in pavement bases and subbases, stabilized subgrades, and structural fills. 5.2 Compressive strength data are used in soil-lime mix design procedures: ( a ) to determine if a soil will achieve a significant strength increase with the addition of lime; ( b ) to group soil-lime mixtures into strength classes; ( c ) to study the effects of variables such as lime percentage, unit weight, water content, curing time, curing temperature, etc.; and ( d ) to estimate other engineering properties of soil-lime mixtures. 5.3 Lime is generally classified as calcitic or dolomitic. Usually in soil stabilization, high-calcium lime [CaO] or dolomitic lime [CaO + MgO] are used. The lime is transformed from oxide to hydroxide form [[Ca(OH) 2 or [Ca(OH) 2 + Mg(OH) 2 ]] by the addition of water in the soil, a slurry tank, or at a manufacturing facility. Lime may increase the strength of cohesive soil. The type of lime in combination with soil type influences the resulting compressive strength. Note 2: The agency performing this test method can be evaluated in accordance with Practice D3740 . Notwithstanding statements on precision and bias contained in this method: The precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facility used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing. Users of this test method are cautioned that compliance with Practice D3740 does not, in itself, ensure reliable testing. Reliable testing depends on many factors; Practice D3740 provides a means of evaluating some of these factors.