درباره ما
ASTM - ASTM International: Recent submissions
Now showing items 1561-1580 of 39933
-
Standard Specification for Chemical-Resistant Resin Mortars
Abstract: This specification covers the requirements for chemical-resistant resin mortars for bonding chemical-resistant brick or tile. Mortars of this group generally have better physical properties and resist a wider variety of ... -
Standard Test Method for Compressive Strength of Hydraulic-Cement Mortars
(Using Portions of Prisms Broken in Flexure) Abstract: 4.1 This method provides a means of obtaining compressive strength values from the same specimens previously used for flexural strength determinations by Test Method C348. The compressive strength values are for reference ... -
Standard Test Method for Node Tensile Strength of Honeycomb Core Materials
Abstract: 5.1 The honeycomb tensile-node bond strength is a fundamental property than can be used in determining whether honeycomb cores can be handled during cutting, machining and forming without the nodes breaking. The tensile-node ... -
Standard Specification for Elastomeric Joint Sealants
Abstract: 7.1 This specification covers several classifications of sealants as described in Section 4 for various applications. It should be recognized by the purchaser or design professional that not all sealants meeting this ... -
Standard Practice for Preparation and Conditioning of Cast, Drilled, or Sawed Specimens of Hydraulic-Cement Mortar and Concrete Used for Length Change Measurements
Abstract: 4.1 Measurements of length change permit assessment of the potential for volumetric expansion or contraction of cast, drilled, or sawed specimens of hydraulic-cement mortar, and concrete due to various causes other than ... -
Standard Specification for Gypsum Formboard
Abstract: This specification covers the minimum requirements for gypsum formboard designed for use as a permanent form for poured-in-place reinforced gypsum concrete roof decks. Gypsum formboard shall consist of a noncombustible ... -
Standard Test Method for Softening Point of Glass
Abstract: 2.1 This test method is useful to determine approximately the temperature below which the glass behaves as a rigid solid in glass-forming operations and for a control test to indicate changes in composition. It has been ... -
Standard Test Methods for Sieve Analysis of Wet-Milled and Dry-Milled Porcelain Enamel
Abstract: 3.1 The fineness of the frit has a direct bearing on many of its properties, such as fusibility, tearing, gloss, opacity, suspension in the slip, and ease of spraying. -
Standard Descriptive Nomenclature for Constituents of Concrete Aggregates
Abstract: 4.1 This descriptive nomenclature provides information on terms commonly applied to concrete aggregates. This standard is intended to assist in understanding the meaning and significance of the terms. 4.2 Many of the ... -
Standard Specification for Gypsum Concrete
Abstract: This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the ... -
Standard Specification for Mortar for Unit Masonry
Abstract: This specification covers mortars for use in the construction of non-reinforced and reinforced unit masonry structures. Four types of mortar are covered in each of two alternative specifications: (1) proportion specifications ... -
Standard Test Method for Acid Resistance of Porcelain Enamels
(Citric Acid Spot Test) Abstract: 3.1 This test method is intended specifically for testing the porcelain enamel finish on stoves, table tops, sinks, and other sanitary ware, laundry appliances, architectural units, etc., where the surface may come in ... -
Standard Specification for Air-Entraining Admixtures for Concrete
Abstract: This specification covers materials proposed for use as air-entraining admixtures to be added to concrete mixtures in the field. The air-entraining admixture shall conform to the requirements such as initial and final time ... -
Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
Abstract: 3.1 This test method covers the determination of the air content of freshly mixed concrete. The test determines the air content of freshly mixed concrete exclusive of any air that may exist inside voids within aggregate ... -
Standard Test Method for Air-Entraining Admixtures for Concrete
Abstract: 3.1 This test method is used to develop data for comparison with the requirements of Specification C260/C260M. These tests are based on arbitrary stipulations permitting highly standardized testing in the laboratory, and ... -
Standard Test Method for Tensile Adhesive Strength of Preformed Tape Sealants by Disk Method
Abstract: 5.1 Preformed tape sealants are tacky, deformable solids, that are used under compression between two or more substrates, in various sealing applications where the surfaces may be of similar or dissimilar materials. This ... -
Standard Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale)
Abstract: This specification covers brick intended for use in masonry and supplying structural or facing components, or both, to the structure. Bricks shall be classified according to their resistance to damage by freezing when ... -
Standard Terminology Relating to Hydraulic and Other Inorganic Cements
Abstract: 3.1 In definitions of cements, ingredients are cited only when they are inherent to the definition, for example portland-pozzolan cement. For ingredients and their quantity limits, if any, that are permitted or prohibited ... -
Standard Specification for Hydrated Lime for Masonry Purposes
Abstract: This specification covers four types of hydrated lime. Type N and S are suitable for use in mortar, in scratch and brown coats of cement plaster, for stucco, and for addition to Portland-cement concrete. Types NA and SA ... -
Standard Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus
Abstract: This test method covers determination of the fineness of hydraulic cement, using the Blaine air-permeability apparatus, in terms of the specific surface expressed as total surface area in square centimetres per gram, or ...