定价： 584元

This test method assigns a measurable value to the amount of fine material adhering to the aggregate.1.1 This test method is used to determine the adherent coating on coarse aggregate (aggregate retained on the 2.36-mm (No. 8) sieve) for the following purposes:1.1.1 Preliminary investigation of mineral aggregate sources.1.1.2 Control of mineral aggregates used in hot mix asphalt (HMA) pavements, seal coats, cover coats, surface treatments, cold mix asphalt, and portland cement concrete at the source of supply.1.1.3 Control of mineral aggregate processing requirements.1.1.4 Acceptance or rejection of aggregates based on adherent coating.1.2 The values shown in SI units are to be regarded as the standard.1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.Note 1—This test method is modeled after Federal Land Highways T 512-94.

定价： 0元

5.1 Relative density (specific gravity) is the ratio of mass of an aggregate to the mass of a volume of water equal to the volume of the aggregate particles – also referred to as the absolute volume of the aggregate. It is also expressed as the ratio of the density of the aggregate particles to the density of water. Distinction is made between the density of aggregate particles and the bulk density of aggregates as determined by Test Method C29/C29M, which includes the volume of voids between the particles of aggregates.5.2 Relative density is used to calculate the volume occupied by the aggregate in various mixtures containing aggregate, including hydraulic cement concrete, bituminous concrete, and other mixtures that are proportioned or analyzed on an absolute volume basis. Relative density (specific gravity) is also used in the computation of voids in aggregate in Test Method C29/C29M. Relative density (specific gravity) (SSD) is used if the aggregate is in a saturated-surface-dry condition, that is, if its absorption has been satisfied. Alternatively, the relative density (specific gravity) (OD) is used for computations when the aggregate is dry or assumed to be dry.5.3 Apparent relative density (specific gravity) pertain to the solid material making up the constituent particles not including the pore space within the particles that is accessible to water.5.4 Absorption values are used to calculate the change in the mass of an aggregate due to water absorbed in the pore spaces within the constituent particles, compared to the dry condition, when it is deemed that the aggregate has been in contact with water long enough to satisfy most of the absorption potential. The laboratory standard for absorption is that obtained after submerging dry aggregate for a prescribed period of time. Aggregates mined from below the water table commonly have a moisture content greater than the absorption determined by this test method, if used without opportunity to dry prior to use. Conversely, some aggregates that have not been continuously maintained in a moist condition until used are likely to contain an amount of absorbed moisture less than the 24-h soaked condition. For an aggregate that has been in contact with water and that has free moisture on the particle surfaces, the percentage of free moisture is determined by deducting the absorption from the total moisture content determined by Test Method C566.5.5 The general procedures described in this test method are suitable for determining the absorption of aggregates that have had conditioning other than the 24-h soak, such as boiling water or vacuum saturation. The values obtained for absorption by other test methods will be different than the values obtained by the prescribed soaking, as will the relative density (specific gravity) (SSD).1.1 This test method covers the determination of relative density (specific gravity) and the absorption of coarse aggregates. The relative density (specific gravity), a dimensionless quantity, is expressed as oven-dry (OD), saturated-surface-dry (SSD), or as apparent relative density (apparent specific gravity). The OD relative density is determined after drying the aggregate. The SSD relative density and absorption are determined after soaking the aggregate in water for a prescribed duration.1.2 This test method is not intended to be used with lightweight aggregates that comply with Specification C332 Group I aggregates.1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4 The text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this test method.1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.

定价： 0元

This specification covers alloy steel rods and uncoated coarse round alloy wire in coils that are not required to meet hardenability band limits. Heat and product analyses shall be used to verify that the required percentage of chemical compositions for carbon, manganese, phosphorus, sulfur, vanadium, nickel, chromium, molybdenum, copper, tungsten, aluminum and lead are within the specified limit. Required grain sizes shall be determined and specified as annealed, spheroidize annealed or patented. Tensile strength for annealed alloy rod and wires shall be evaluated using a tensile tests.1.1 This specification covers general requirements for alloy steel rods and uncoated coarse round alloy wire in coils that are not required to meet hardenability band limits.1.2 In case of conflict, the requirements in the purchase order, on the drawing, in the individual specification, and in this general specification shall prevail in the sequence named.1.3 The values stated in inch-pound units are to be regarded as the standard.

定价： 0元

This specification covers the general requirements for carbon steel wire rods and uncoated coarse round wire in coils or straightened and cut lengths. Chemical compositions are specified by ranges or limits for carbon and other elements. The grades commonly specified for carbon steel wire rods and coarse round wire are presented. Grain size, when specified, and the mechanical properties enumerated in individual specifications shall be determined in accordance with reference test materials.1.1 This specification covers general requirements for carbon steel wire rods and uncoated coarse round wire in coils or straightened and cut lengths.1.2 In case of conflict, the requirements in the purchase order, on the drawing, in the individual specification, and in this general specification shall prevail in the sequence named.Note 1—This metric specification is equivalent to Specification A 510, and is compatible in technical content.1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

定价： 0元

This specification deals with the general requirements for alloy steel rods and uncoated coarse round alloy wire in coils that are not required to meet hardenability band limits. Heat and product analyses shall be used to verify that the required percentage of chemical compositions for carbon, manganese, phosphorus, sulfur, vanadium, titanium, nickel, chromium, molybdenum, copper, tungsten, aluminum, and lead are within the specified limit. Required grain sizes shall be determined and specified as annealed, spheroidize annealed, or patented. Tensile strength for annealed alloy rod and wires shall be evaluated using a tensile tests.1.1 This specification covers general requirements for alloy steel rods and uncoated coarse round alloy wire in coils that are not required to meet hardenability band limits.1.2 In case of conflict, the requirements in the purchase order, on the drawing, in the individual specification, and in this general specification shall prevail in the sequence named.Note 1—This specification is the metric counterpart of Specification A752.

定价： 0元

定价： 280元 / 折扣价： 238 元

定价： 0元 / 折扣价： 0 元

1.1 This practice covers the evaluation of frost resistance of coarse aggregates in air-entrained concrete. It was developed particularly for use with normal weight aggregates not having vesicular, highly porous structure.1.2 The values stated in inch-pound units are to be regarded as the standard.

定价： 0元

1.1 This test method covers the determination of capillary-moisture relationships for coarse- and medium-textured soils as indicated by the soil-moisture tension relations for tensions between 10 and 101 kPa (0.1 and 1 atm). Under equilibrium conditions, moisture tension is defined as the equivalent negative gage pressure, or suction, corresponding to a soil moisture content. This test method determines the equilibrium moisture content retained in a soil subjected to a given soil-water tension. This test method is not suitable for very fine-textured soils.Note 1--For determination of capillary-moisture relationships for fine-textured soils, refer to Test Method D3152.1.2 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 and health practices and determine the applicability of regulatory limitations prior to use.

定价： 0元

定价： 191元

定价： 329元

定价： 271元

定价： 271元

定价： 384元