The nwg aggregates were developed by combining different proportions of size number 57 coarse aggregate and fine aggregates. Fine aggregate for use in concrete that will be subject to wetting, extended exposure to humid atmosphere, or contact with moist ground shall not contain any materials that are deleteriously reactive with the alkalis in the cement in amount sufficient to cause excessive expansion of mortar or concrete. However, there are some projects where it wont be the right fit. Coarse and fine aggregate gradations have traditionally been defined separately for use in portland cement concrete. This section includes the requirements for fine aggregate. Uscs classification of the soil and to establish its gradation relative to the fine aggregate limits for concrete defined in astm c33. The following chart shows example individual aggregate gradations and combined aggregate gradation information.
The presence of free moisture content in fine aggregate particles results in bulking. Chapter 26 gradation design of sand and gravel filters part 633 national engineering handbook table 26 data for designed filter band 2629 table 2614 design filter band data for example 266 soil 2634 table 26b1 selected standard aggregate gradations 2641 figures figure 261 grain size distribution curve for fine clay. Chapter 26 gradation design of sand and gravel filters. Npca certified plants should perform gradation testing at least once per 1,500 tons of fine aggregate used, once per 2,000 tons of course aggregate used or once per month, whichever comes first. For specific material requirements or questions about your project needs, please contact customer service at 18887664242. Fine aggregate should fall within gradation limits provided in astm c 33, section 6. Grading of fine aggregate with astmc33 2003 limits download. The charts below show typical gradations of various products based on required specifications from agencies and organizations such as state dots, aashto, etc. The percent range represents the percent passing for each sieve size. Astm c33 is the perfect sand for many different projects. Fine aggregate or sand has only one range of particle sizes for general construction and highway work. Concrete producers then use that material to make concrete, the properties of which are quite dependent on the aggregate gradation, both coarse and fine.
Effect of continuous wellgraded combined aggregate grading. Table 1 3 astm gradation specifications for fine aggregates for portland cement concrete. The plant should conduct these tests in accordance with astm c6 c6m, standard test method for sieve analysis of fine and course aggregates. Extremely lightweight aggregate is also limited to 3.
Most specifications require coarse and fine aggregate to conform to the requirements, including the gradation, of astm c33. For each aggregate used in the mix design, include a gradation analysis that is representative of the aggregate. The standard addresses both fine aggregates including natural sand, manufactured sand or a combination of these and course aggregates gravel, crushed gravel, crushed stone and similar items. Optimization of gradation and fineness modulus of naturally fine. This gradation chart is for general reference only. It was revealed that only two sands satisfy the astm gradation limits while all the. Fine aggregate consists of natural sand, manufactured sand, or a combination. Perform the coarse aggregate gradationsieve analysis according to astm c6. Jun 22, 2019 sieve analysis of coarse aggregate 20mm as per is 2386 part 1 size of sieves to be used. If there is a deficiency in a locally available fine aggregate, concrete may benefit from the addition of air entrainment, additional cement, or a supplemental cementitious material scm to address these shortcomings. Grading requirements of fine aggregates astm c33 bulking of sand. Table 1 limits for deleterious substances in fine aggregate for concrete item mass percent of total sample, max clay lumps and friable particles 3. Changes in total aggregate gradation on portland cement concrete. Sieve, 2015 % average passing, concrete material spec, astm c33 fine aggregate spec, sd dot fa spec.
Standard method for sieve analysis of fine and coarse. Mechanical and physical properties of astm c33 sand dtic. Aggregate specifications and performance in concrete. The concrete consists of three basic solid materials, one is the sand whose fineness is checked by experiment no 1, the other two materials are the coarse aggregate that is the crush while the third is the fine aggregate that is the sand.
Aggregate voids content 5 figure 4 shows the cf chart and 818 chart results of blending different proportions of the no. The term generally applies to dense graded aggregate. Details pertaining to this special requirement appear in the special provision section of the contract. By using lafarge aggregate divisions septic sands that meet the astm c33 gradation you can produce a high quality sewage mound or drainage field that research indicates may reduce the rate of biomat clogging due to fewer fines as compared to a sand with additional fines at an equivalent rate. Download table grading of fine aggregate with astmc33 2003 limits from publication. Those specified limits are listed in the table given below. Astm gradation specifications for fine aggregates for portland cement concrete. Fine aggregates the fine aggregate, including blended fine aggregate, used in hma surface 4. Requirements of astm c 33 or aashto m 6m 43 per mit a relatively wide range in fineaggregate gradation, but specifications by. Aggregate gradation matters concrete construction magazine. Grading requirements of fine aggregates iamcivilengineer.
In addition to the astm c33 specification, sand must meet all of the following conditions. Astm c33 sets limits for deleterious, or harmful, substances in fine concrete aggregate. Fine aggregate degradation index of aggregate quality. Washed astm c33 fine aggregate concrete sand is utilized for stormwater management applications in montgomery county. Perform the coarse aggregate gradation sieve analysis according to astm c6. Com sieve size grams retained % grams retained cumulative % retained cumulative % passing astm c33 specification. No restrictions are placed on organic impurities in fine aggregate for use in other types of construction. Active standard astm c33 c33m developed by subcommittee. This experiment is carried out to find and check the gradation of the fine aggregate i. Sieve analysis of coarse aggregate gradation of aggregate. Jul 17, 2017 gradation of stone and rock is found by astm c6, the test method for sieve analysis of fine and coarse aggregates. Gradation of fine aggregate by sieve analysis qasim shinwari. The astm c33 specifications for fine aggregates for concrete are given in table 1.
Impact of cement replacement partially by mosaic powder on. Astm c 29 aashto t 19 compact weight and unit weight classification loose weight. For example, there are limits on the amount of clay lumps and friable particles small pieces of aggregate that break down easily. The cf and 818 charts for the wg and nwg combined aggregates are plotted in fig. When used, the fine aggregate shall not contain any of the following. Standard specification for concrete aggregates astm c33. Astm c33 american society for testing and materials astm an international standards organization, in astm c33, specifies the percent passing limits for each sieve of fine aggregates.
Usually coarse aggregate has a toughness and abrasion resistance requirement. Effect of continuous wellgraded combined aggregate grading on concrete performance phase a. The particle size distribution, or gradation, of the constituent aggregate figure 3 is one of the most influential characteristics in determining how an hma mixture will perform as a pavement material. This specification defines the requirements for grading and quality of fine and coarse aggregate for use in concrete. Frequently referred to as washed concrete sand or manufactured sand, astm c33 refers to a type of sand that meets specific astm guidelines for concrete aggregates andor the items that are added into the concrete in order to prepare it for use. An astm designation number identifies a unique version of an astm standard. There is no requirement to wash fine aggregate for concrete if produced otherwise to conform to all specified requirements. Astm c33 c33m 18 standard specification for concrete. Bulking results in an increase in the volume of a given mass of sand caused by the films of water pushing the sand particles apart. Result, astm c33 fine aggregate, sd dot specification sec. The standard addresses both fine aggregates including natural sand, manufactured sand or a.
The grading and grading limits are usually expressed as the percentage of material passing each sieve. Section 501 concrete wisconsin department of transportation. The limitations on the amount of organic impurities allowed in fine aggregates are determined by the test method for organic impurities. Fine aggregate subjected to five cycles of the soundness test shall have a required weighted. Deviations in standard aggregate gradation and its. Fine aggregate fine aggregate consists of natural sand, manufactured sand, or a combination. Sand must meet gradation requirements for astm c33 fine aggregate concrete sand. C33 c33 m, standard specification for concrete aggregates, astm int. The gradations should be current and are typically the average of more than one individual test for each aggregate. Astm c33 c33m 08 standard specification for concrete. There are also a few blended or graded aggregate sizes that combine the gradation of several aggregates. All white cells are input cells start by typing your name if printing is desired.