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NEPLATNÁ ASTM D2844/D2844M-13 1.3.2013 náhled

Doplňující informace

ASTM D2844/D2844M-13

Standard Test Method for Resistance R-Value and Expansion Pressure of Compacted Soils

Automaticky přeložený název:

Standardní zkušební metoda pro odolnost proti R-Value a tlaku v expanzní hutného půd

NORMA vydána dne 1.3.2013

Jazyk
Provedení	PDF - okamžité stažení - 1 948.90 Kč Tištěné - 1 948.90 Kč
Dostupnost	SKLADEM
Cena	1 948.90 Kč bez DPH
1 948.90 Kč

Informace o normě:

Označení normy: ASTM D2844/D2844M-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.3.2013
Kód zboží: NS-21684
Počet stran: 13
Přibližná hmotnost: 39 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Zemní práce. Hloubicí práce. Budování základů. Podzemní práce

Anotace textu normy ASTM D2844/D2844M-13 :

Keywords:
acceptance tests, base course, bearing capacities, compaction, dynamic bearing capacity, expansion, expansive soils, flexible pavements, foundations, highway loads, inspection, kneading compaction, laboratory tests, material tests, pavement design, resistance value, specifications, stability, stabilometer, subbase, subbase strength, subgrade, subgrade reaction, subgrade stability, trafficability, ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works)

Doplňující informace

Significance and Use

4.1 This test method is used to measure the potential strength of subgrade, subbase, and base course materials for use in road and airfield pavements. The R-value is used by some agencies as criteria for acceptance of aggregates for base course and bituminous courses.

FIG. 1 Tamper Shoe for Kneading Compactor

4.2 The expansion pressure testing has been used in conjunction with the R-value test to determine cover requirements (thickness) and construction controls to reduce pavement distortion from expansive subgrade soils.

1.1 This test method covers the procedure for testing both treated and untreated laboratory compacted soils or aggregates with the stabilometer and expansion pressure devices to obtain results indicative of performance when placed in the base, subbase, or subgrade of a road subjected to traffic.

1.2 Units—The values stated in either SI units or inch-pound units [presented in brackets] 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. However, use of equipment manufactured to be readable in inch-pound units only should not be considered as non-conformance to the test method. Many stabilometers and expansion pressure devices are manufactured to be readable in inch-pound units only.

1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.

1.3.1 For purposes of comparing measured or calculated value(s) with specified limits, the measured or calculated value(s) shall be rounded to the nearest decimal or significant digits in the specified limits.

1.3.2 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user's objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

1.4 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.

2. Referenced Documents

California Test 103	Method of Test For Calibration of Expansion Pressure Devices
E11-22	Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
C670-24a	Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials (Includes all amendments and changes 3/11/2024).
D653-22	Standard Terminology Relating to Soil, Rock, and Contained Fluids
D3740-23	Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
D6026-21	Standard Practice for Using Significant Digits and Data Records in Geotechnical Data
E4-21	Standard Practices for Force Calibration and Verification of Testing Machines
T?190	Test Method for Resistance R-Value and Expansion Pressure of Compacted Soils Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001, http://www.transportation.org.
Exudation Device
Expansion Pressure Apparatus
Stabilometer