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📐 Test Method Scope and Summary This test method covers the determination of inorganic “active oxygen” in bleaching compounds such as perborates, percarbonates, and peroxides. It specifically excludes persulfates and monopersulfates. Active oxygen is defined as the measure of oxidizing…
🔬 Overview of Standard D2186-05 ASTM D2186-05 (Reapproved 2009) provides standard test methods for determining deposit-forming impurities in steam. All determinations are performed on condensed steam samples. Test Methods A, B, and C measure total deposit-forming material, while Test Method…
📐 Scope and Significance This test method, designated D2177-99, provides a standardized approach to measure the ink absorption rate of blotting papers. It specifies the use of a standard writing ink at 23°C (73.4°F) and the time required for 1…
ASTM D2178/D2178M-15a (Reapproved 2021) is the standard specification for asphalt glass felt used in roofing and waterproofing. It covers the requirements for Types IV and VI glass felts that are impregnated with asphalt and used in built-up roofing and waterproofing…
📐 Apparatus and Specimen Specifications The test apparatus requires two metal plane parallel circular concentric faces. The movable platen has an area of 20 cm², and both platens must be parallel to within 0.1 mm. Specimens are prepared from sheets…
🔬 Test Scope and Fundamental Principles ASTM D2176-16 (Reapproved 2021) specifies the standard methodology for evaluating the folding endurance of paper and plastic films using the M.I.T.-type folding apparatus. Folding endurance is defined as the number of double folds a…
📐 Scope and Applicability This standard test method, designated D2171/D2171M, provides procedures for measuring the apparent viscosity of asphalt binder using vacuum capillary viscometers at a controlled temperature of 60°C [140°F]. It is applicable to materials with viscosities ranging from…
ASTM D2172/D2172M-24 defines standard test methods for the quantitative extraction of asphalt binder from asphalt mixtures and pavement samples. This testing is crucial for assessing mixture composition and ensuring material quality in construction. The aggregate recovered can be analyzed for…
📐 Scope and NLGI Consistency Classification The ASTM D217-21a test methods outline four standard procedures for measuring the consistency of lubricating greases using the cone penetration method. The penetration depth, measured in tenths of a millimetre (0.1 mm), determines the…
🔬 Scope, Materials, and Applicability Standard Test Method D2170/D2170M-24 defines the procedures for determining the kinematic viscosity of liquid asphalts, road oils, and distillation residues of liquid asphalts at 60 °C [140 °F], and for liquid asphalt binders at 135…