6 Annual Book of ASTM Standards, Vol 04.03. It is preferable to have fine aggregates withe % passing in the average middle zone of %passing limit rather to be on the extreme ends. 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 and/or the items that are added into the concrete in order to prepare it for use. For example, there are limits on the amount of clay lumps and friable particles -- small pieces of aggregate that break down easily. 200) sieve: Concrete subject to abrasion 3.0A All other … Figure 1-1 also gives the grade limits for fine-aggregates … Grading Requirements of Fine Aggregates (ASTM C33) Bulking of Sand. ASTM C33 requires the FM of fine aggregate to be between 2.3 and 3.1, and that the FM of the final concrete batch cannot vary from the design mix by more than 0.2. In this article, we discuss the properties of the standard aggregates used in the production of concrete as per the American Standards (ASTM- C33/C33M). Aggregate characteristics and standards tests: Table 1-2. Some projects might require even more-stringent limits. Weaver et al. 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. These specified limits are stated in Table-1 of ASTM C33. Table 1-1. Concrete producers then use that material to make concrete, the properties of which are quite dependent on the aggregate gradation, both coarse and fine. Description. Other Key Parameters. Limits specified in ASTM C33 for fine-aggregates and for one size of coarse-aggregate. To avoid post-placement problems in concrete that are difficult to rectify, verify that these limits are not exceeded at the … The aggregates are broadly classified into two types based on the size, namely- fine aggregate and coarse aggregate. This test method covers the determination of the percentage of lightweight particles in aggregate … The standard addresses both fine aggregates … ASTM C-33 sets limits for deleterious, or harmful, substances in fine concrete aggregate. What is ASTM C33? (1998) recommends that sand used for constructing sand filters has no more than 4% fines passing the 100 sieve size. The percentage is a measure of the degradation or loss of material as a result of impact and ... ASTM D 5821 is used to determine the crushed particle content. 1999). 7 Annual Book of ASTM Standards, Vol 14.02. The fineness Modulus of fine aggregates shall be in the range of 2.3~3.1. The allowable percentage of deleterious substances for both fine and coarse aggregate are listed in ASTM C 33 Tables 1 and 3, respectively. Size distribution graphs show the percent of material passing each sieve (see Figure 1-1). The presence of free moisture content in fine aggregate particles results in “bulking”. TABLE 1 Limits for Deleterious Substances in Fine Aggregate for Concrete Item Mass Percent of Total Sample, max Clay lumps and friable particles 3.0 Material finer than 75-µm (No. These are limited to 3.0 percent or less of the total mass. Fine aggregate FM’s in the upper end of the spectrum, closer to 3.0, have been noted to produce concrete with good strength and workability in mixes with high … The ASTM C-33 specification for fine aggregate allows up to 10% of the material finer than a #100 mesh sieve. Ball (1997) indicates that sand with excessive fine Crushed Fine Aggregates Coarse Aggregates Physical Quality Tests Absorption Abrasion Resistance Soundness ... depending on the classification of the aggregate. By inputting sieve size analysis (gradation) information for up to three coarse aggregates and two fine aggregates, and the relative percent of each aggregate to be used in the mixture, this web applet allows you to view plots of the percent passing, percent retained, workability chart, ASTM C33 curve, and 0.45 power curve for the combined aggregate gradation. Most specifications require coarse and fine aggregate to conform to the requirements, including the gradation, of ASTM C33.