1、粗细集料细筛的标准测试方法1. Scope*1.1 This test method covers the determination of the particlesize distribution of fine and coarse aggregates by sieving.这中测试方法涵盖了粗、细集料在筛分中的颗粒尺寸分布。1.2 Some specifications for aggregates which reference thistest method contain grading requirements including bothcoarse and fine fr
2、actions. Instructions are included for sieveanalysis of such aggregates.一些关于骨料的规范是参照这种测试方法的，这种方法包含了粗、细粒级的分级要求。这种集料筛析包括了说明。1.3 The values stated in SI units are to be regarded as thestandard. The values in parentheses are provided for informationpurposes only. Specification E 11 designates the size o
3、fsieve frames with inch units as standard, but in this test methodthe frame size is designated in SI units exactly equivalent to theinch units.本标准采用国际单位，括号内给出的值仅供参考。规范 E 11 指定了筛框架的英寸尺寸标准，但是在这种测试方法中，框架尺寸是指定的完全等同于英寸单位的国际标准单位。1.4 This standard does not purport to address all of thesafety concerns, if a
4、ny, associated with its use. It is theresponsibility of the user of this standard to establish appropriatesafety and health practices and determine the applicabilityof regulatory limitations prior to use.这一标准不是处理所有的安全问题，如果有的话，与其使用相关。本标准的使用者在使用本标准时，应先制定适当的安全预防措施和健康保护措施，并判断调整具体的限制，这是使用者的责任2. Reference
5、d Documents2.1 ASTM Standards:C 117 Test Method for Materials Finer than 75-m (No. 200) Sieve in Mineral Aggregates by WashingC 125 Terminology Relating to Concrete and Concrete AggregatesC 637 Specification for Aggregates for Radiation-Shielding ConcreteC 670 Practice for Preparing Precision and Bi
6、as Statements for Test Methods for Construction MaterialsC 702 Practice for Reducing Samples of Aggregate to Testing SizeD 75 Practice for Sampling AggregatesE 11 Specification for Wire Cloth and Sieves for Testing Purposes2.2 AASHTO Standard:AASHTO No. T 27 Sieve Analysis of Fine and Coarse Aggrega
7、tes3. Terminology3.1 DefinitionsFor definitions of terms used in this standard refer to Terminology C 125.4. Summary of Test Method4.1 A sample of dry aggregate of known mass is separated through a series of sieves of progressively smaller openings for determination of particle size distribution.已知数
8、量的干燥集料是通过一系列依次变小的孔来测定粒度分布的。5. Significance and Use5.1 This test method is used primarily to determine the grading of materials proposed for use as aggregates or being used as aggregates. The results are used to determine compliance of the particle size distribution with applicable specification requ
9、irements and to provide necessary data for control of the production of various aggregate products and mixtures containing aggregates. The data may also be useful in developing relationships concerning porosity and packing.这种测试方法起初是用于确定作为集料应用或正在作为集料应的材料分级。该测试结果是用于确定符合规范的粒度分布的适用以及为控制各种集料产品和含有集料混合物的生产
10、提供必要的据。该数据也有可能有助于提高孔隙和包装之间的关系。5.2 Accurate determination of material finer than the 75-m (No. 200) sieve cannot be achieved by use of this test method alone. Test Method C 117 for material finer than 75-m sieve by washing should be employed.单独使用该测试方法并不能得到更精确的确定比 75-m (No. 200)更好的材料。应该运用比 75-m (No. 2
11、00)更好的材料筛洗测试方法 C 117。5.3 Refer to methods of sampling and testing in Specification C 637 for heavyweight aggregates.所指的在规范 C 637 关于重集料的样本和测试方法。6. Apparatus6.1 BalancesBalances or scales used in testing fine and coarse aggregate shall have readability and accuracy as follows:6.1.1 For fine aggregate,
12、 readable to 0.1 g and accurate to 0.1 g or 0.1% of the test load, whichever is greater, at any point within the range of use.关于细集料，可读性可读性至 0.1 g 和精确到 0.1 克测试负荷的 0.1%,以较高者为准，在任何一个点的范围内使用。6.1.2 For coarse aggregate, or mixtures of fine and coarse aggregate, readable and accurate to 0.5 g or 0.1 % of
13、the test load, whichever is greater, at any point within the range of use.关于粗集料，或者细、粗集料的混合物，可读性并且精确到0.1 克测试负荷的 0.1%,以较高者为准，在任何一个点的范围内使用。6.2 SievesThe sieve cloth shall be mounted on substantial frames constructed in a manner that will prevent loss of material during sieving. The sieve cloth and stan
14、dard sieve frames shall conform to the requirements of Specification E 11. Nonstandard sieve frames shall conform to the requirements of Specification E 11 as applicable.晒布应该安装在坚固的框架上以避免在材料筛选中损耗。筛布和标准筛框应符合规范 E 11 的要求。非标准筛框应符合规范E 11 的可适用要求。6.3 Mechanical Sieve ShakerA mechanical sieving device, if us
15、ed, shall create motion of the sieves to cause the particles to bounce, tumble, or otherwise turn so as to present different orientations to the sieving surface. The sieving action shall be such that the criterion for adequacy of sieving described in 8.4 is met in a reasonable time period.筛分机械设备，如果用
16、的话，应有在筛选中导致粒子反弹、弹跳,翻滚的动作，否则将以呈现不同的取向筛面。在合理的时间段内，筛分应符合在 8.4 中描述的充分性准则，6.4 OvenAn oven of appropriate size capable of maintaining a uniform temperature of 110 6 5 C (230 6 9 F).能够维持在一个统一的温度 1105 C (2309 F)的适当大小火炉。7. Sampling7.1 Sample the aggregate in accordance with Practice D 75. The size of the fie
17、ld sample shall be the quantity shown in Practice D 75 or four times the quantity required in 7.4 and 7.5 (except as modified in 7.6), whichever is greater.集料样本应按照实践 D 75. 现场样本大小数量显示在实践 D 75或者在 7.4 和 7.5 的四倍数量（除了在 7.6 中的修改） ，取其最大值。7.2 Thoroughly mix the sample and reduce it to an amount suitable for
18、 testing using the applicable procedures described in Practice C 702. The sample for test shall be approximately the quantity desired when dry and shall be the end result of the reduction. Reduction to an exact predetermined quantity shall not be permitted.混合均匀的样品以及减少到符合在实践 C 702 中描述的可用于测试应用的可适用性程序的
19、数量。测试样本的大致数量应满足当干燥和应该减少的最终结果。减少到一个确切的预定的数量是不允许的。7.3 Fine AggregateThe size of the test sample, afterdrying, shall be 300 g minimum.细集料-经过干燥后的测试样品的大小应该最少在 300 克。7.4 Coarse AggregateThe size of the test sample ofcoarse aggregate shall conform with the following:粗集料-粗集料的测试样本大小应符合以下：Nominal Maximum Size
20、 Test Sample SizeSquare Openings, mm (in.) min, kg(lb)9.5(38) 1(2)12.5(12) 2(4)19.0(34) 5(11) 25.0(1) 10(22)37.5(1 12) 15(33)50(2) 20(44)63(2 12) 35(77)75(3) 60(130)90(3 12) 100(220)100(4) 150(330)125(5) 300(660)7.5 Coarse and Fine Aggregate MixturesThe size of thetest sample of coarse and fine aggr
21、egate mixtures shall be thesame as for coarse aggregate in 7.4.粗集料和细集料混合物-粗集料和细集料混合物的大小和 7.4 中描述的粗集料的相同。7.6 Samples of Large Size Coarse AggregateThe size of sample required for aggregate with 50-mm nominal maximum size or larger is such as to preclude convenient sample reduction and testing as a un
22、it except with large mechanical splitters and sieve shakers. As an option when such equipment is not available, instead of combining and mixing sample increments and then reducing the field sample to testing size, conduct the sieve analysis on a number of approximately equal sample increments such t
23、hat the total mass tested conforms to the requirement of 7.4.大尺寸的粗集料的样本-需要的 50-mm 额定最大尺寸粒径集料或者更大的例如排除方便样本的减少和作为单元测试，除了除了对大型机械分离器、筛振荡器。作为这样的设备选择是不可用的，相反的结合混合样本副样，然后减少现场样本至测试大小，筛析是在一系列近似相等的样本副样中进行的，这样的总质量测试符合 7.4 要求。7.7 In the event that the amount of material finer than the 75-m (No. 200) sieve is to
24、 be determined by Test Method C 117, proceed as follows:如果更细的超过 75-m (No. 200)筛选的材料数量通过测试方法 C 117 确定的，进行如下：7.7.1 For aggregates with a nominal maximum size of 12.5 mm (1/2 in.) or less, use the same test sample for testing by Test Method C 117 and this test method. First test the sample in accordanc
25、e with Test Method C 117 through the final drying operation, then dry sieve the sample as stipulated in 8.2-8.7 of this test method.对于额定最大尺寸在 12.5 mm (1/2 in.)或更少，使用通过测试方法C 117 来测试试验样本。初次测试样本按照测试方法 C 117，经过干燥操作，然后在该测试方法中 8.2-8.7 规定的干筛样本。7.7.2 For aggregates with a nominal maximum size greater than 1
26、2.5 mm (12 in.), use a single test sample as described in 7.7.1, or optionally use separate test samples for Test Method C 117 and this test method.对于额定最大尺寸大于 12.5 mm (1/2 in.)的集料，用单独的在 7.7.1中描述的测试样本，或者运用测试方法 C 117 独立的测试样本。7.7.3 Where the specifications require determination of the total amount of m
27、aterial finer than the 75-m sieve by washing and dry sieving, use the procedure described in 7.7.1.在规格要求通过筛洗和干筛确定比 75-m 更细的筛选材料的总数时，用 7.7.1 中描述的程序。8. Procedure8.1 Dry the sample to constant mass at a temperature of 1105C (2309 F).温度恒定在 1105C (2309 F)干燥样本。8.2 Select sieves with suitable openings to f
28、urnish the information required by the specifications covering the material to be tested. Use additional sieves as desired or necessary to provide other information, such as fineness modulus, or to regulate the amount of material on a sieve. Nest the sieves in order of decreasing size of opening fro
29、m top to bottom and place the sample on the top sieve. Agitate the sieves by hand or by mechanical apparatus for a sufficient period, established by trial or checked by measurement on the actual test sample, to meet the criterion for adequacy or sieving described in 8.4.选择适当孔的筛来为测试的材料规格要求提供信息。合适的运用额
30、外的筛或必要时可以提供其他信息，例如细度系数，或者调整所筛材料的数量。一套筛子要按照孔尺寸大小递增由高到低的顺序排列，并且把样本放在高的筛子里。在一段足够长的时间内，搅拌筒用手或用机械装置,实际的测试样本经过尝试或经测量，来符合在 8.4 中描述的标准。8.3 Limit the quantity of material on a given sieve so that all particles have opportunity to reach sieve openings a number of times during the sieving operation. For sieves
31、 with openings smaller than 4.75-mm (No. 4), the quantity retained on any sieve at the completion of the sieving operation shall not exceed 7 kg/m2 of sieving surface area (Note 5). For sieves with openings 4.75 mm (No. 4) and larger, the quantity retained in kg shall not exceed the product of 2.5 (
32、sieve opening, mm (effective sieving area, m2). This quantity is shown in Table 1 for five sieve-frame dimensions in common use. In no case shall the quantity retained be so great as to cause permanent deformation of the sieve cloth.在一个给定的筛中，限制材料的数量以达到在筛选中，粒子可以多次达到筛孔。对于筛孔小于 4.75-mm (No. 4)的筛子，在筛选操作完
33、成的任何筛选中该数量保持在筛选表面不超过 7 kg/m2。对于筛孔为4.75-mm (No. 4)的筛子，数量应以千克保持在不超过产品的 2.5 (筛孔, mm (有效筛面, m2)。该数量在表 1 关于五种筛框常用尺寸。在任何情况下，绝不保持最大数量，否则可能会导致筛布永久变形。8.3.1 Prevent an overload of material on an individual sieve by one of the following methods:用以下方法防止在单独的筛子上材料超载。8.3.1.1 Insert an additional sieve with opening
34、 size intermediate between the sieve that may be overloaded and the sieve immediately above that sieve in the original set of sieves.在筛子的孔径之间插于一个额外的筛子可能会超载，以及那个筛上面的筛子立即在原套筒上。8.3.1.2 Split the sample into two or more portions, sieving each portion individually. Combine the masses of the several porti
35、ons retained on a specific sieve before calculating the percentage of the sample on the sieve.把样本分开成两个或者更多的部分，分别筛选单独的筛选每一部分。在计算样本的百分比之前把所有的部分结合保持在特定的筛子上。8.3.1.3 Use sieves having a larger frame size and providing greater sieving area.使用更大框架尺寸的筛子以使其有更大的筛选空间。8.4 Continue sieving for a sufficient perio
36、d and in such manner that, after completion, not more than 1 % by mass of the material retained on any individual sieve will pass that sieve during 1 min of continuous hand sieving performed as follows: Hold the individual sieve, provided with a snug-fitting pan and cover, in a slightly inclined pos
37、ition in one hand. Strike the side of the sieve sharply and with an upward motion against the heel of the other hand at the rate of about 150 times per minute, turn the sieve about one sixth of a revolution at intervals of about 25 strokes. In determining sufficiency of sieving for sizes larger than
38、 the 4.75-mm (No. 4) sieve, limit the material on the sieve to a single layer of particles. If the size of the mounted testing sieves makes the described sieving motion impractical, use 203-mm (8 in.) diameter sieves to verify the sufficiency of sieving.在足够的时间内继续筛选，以此方式完成后，不超过所有材料的 1 %保留在任何的筛子上将在一分钟
39、内持续的用手如下操作通过筛子：握紧单独的筛子，提供一个舒适-合适的盘子和阀盖，另一只手轻微的倾斜。急剧敲击筛的另一边，向上的运动用另一只手以每分钟 150次的速度来打击根部，在大概 25 strokes 的间隔把筛子的六分之一旋转。在确定筛子尺寸大于 4.75-mm (No. 4)号筛的充分性规则，限制筛子上的材料是单层的微粒。8.5 In the case of coarse and fine aggregate mixtures, refer to 8.3.1 to prevent overloading of individual sieves.8.5.1 Optionally, red
40、uce the portion finer than the 4.75-mm (No. 4) sieve using a mechanical splitter according to PracticeC 702. If this procedure is followed, compute the mass of each size increment of the original sample as follows:8.6 Unless a mechanical sieve shaker is used, hand sieve particles larger than 75 mm (
41、3 in.) by determining the smallest sieve opening through which each particle will pass. Start the test on the smallest sieve to be used. Rotate the particles, if necessary, in order to determine whether they will pass through a particular opening; however, do not force particles to pass through an o
42、pening.除非用的是机械筛粉器，手动筛颗粒大于 75 mm (3 in.)来确定通过是每个颗粒通过的最小筛孔。用最小的筛网进行测试，旋转粒子，如果需要，来确定它们是否通过一个确定的孔；切勿让粒子通过一个孔。8.7 Determine the mass of each size increment on a scale or balance conforming to the requirements specified in 5.1 to the nearest 0.1 % of the total original dry sample mass. The total mass of t
43、he material after sieving should check closely with original mass of sample placed on the sieves. If the amounts differ by more than 0.3 %, based on the original dry sample mass, the results should not be used for acceptance purposes.在天平上确定每个尺寸增加的质量，以符合 5.1 中的要求直到接近与原来干燥样本的总质量。筛选后材料的总质量应检查接近于筛子中样本的原
44、本质量。如果数量差异大于 0.3 %，基于最初的干燥样品质量，这种结果是不可接受的。8.8 If the sample has previously been tested by Test Method C 117, add the mass finer than the 75-m (No. 200) sieve determined by that test method to the mass passing the 75-m (No. 200) sieve by dry sieving of the same sample in this test method.9. Calculati
45、on9.1 Calculate percentages passing, total percentages retained, or percentages in various size fractions to the nearest 0.1 % on the basis of the total mass of the initial dry sample. If the same test sample was first tested by Test Method C 117, include the mass of material finer than the 75-m (No
46、. 200) size by washing in the sieve analysis calculation; and use the total dry sample mass prior to washing in Test Method C 117 as the basis for calculating all the percentages.计算通过百分比、总保留百分比、在接近于起初干燥样本质量 0.1 %的基础上各种尺寸分数的百分比。如果相同的测试样本通过测试 C 117 测试过，在筛析计算中包括比 75-m (No. 200)尺寸更小的材料质量；在测试方法 C 117 清洗之
47、前用总干样本的质量作为计算所有百分比的基础。9.1.1 When sample increments are tested as provided in 7.6, total the masses of the portion of the increments retained on each sieve, and use these masses to calculate the percentages as in 9.1.在 7.6 中描述的样本增加测试，每个部分增加的总质量保留在每个筛网上，并用这些质量来计算像 9.1 中的百分比。9.2 Calculate the fineness
48、modulus, when required, by adding the total percentages of material in the sample that is coarser than each of the following sieves (cumulative percentages retained), and dividing the sum by 100: 150-m (No. 100), 300-m (No. 50), 600-m (No. 30), 1.18-mm (No. 16), 2.36-mm (No. 8), 4.75-mm (No. 4), 9.5
49、-mm (3.8-in.), 19.0-mm (3.4-in.), 37.5-mm (11.2-in.), and larger, increasing in the ratio of 2 to 1.如果需要的话，细度模数计算，通过增加样本材料总的百分比，这些样本比下列的筛网都粗糙（累积百分比保留） 。10. Report10.1 Depending upon the form of the specifications for use of the material under test, the report shall include the following:根据材料的测试使用规格形式，报告应包括以下方面：10.1.1 Total percentage of material
