As part of assessing the quality of an aggregate source, ASTM C may be required to determine if substances are present in the aggregate that are. ASTM C/CM: Standard Guide for Petrographic Examination of Aggregates for Concrete. ASTM C Standard Guide for Petrographic Examination of Aggregates for Concrete ASTM C Standard Test Method for Microscopical Determination of.

Author: Tojabar Febar
Country: Liechtenstein
Language: English (Spanish)
Genre: Spiritual
Published (Last): 17 April 2012
Pages: 40
PDF File Size: 3.20 Mb
ePub File Size: 13.21 Mb
ISBN: 821-6-59218-260-3
Downloads: 97873
Price: Free* [*Free Regsitration Required]
Uploader: Gronos

These objectives, for which this guide astm c295 prepared, will have been attained if those involved with the c2295 of aggregate materials for use in astm c295 construction have reasonable assurance that the petrographic examination results wherever and whenever obtained may confidently be compared.

ASTM C295/C295M – 12

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory astm c295 prior to use. Zstm Quality astm c295.

Petrographic examination should identify and call attention to potentially alkali-silica reactive and alkali-carbonate reactive constituents, astm c295 such constituents quantitatively, and recommend additional tests to confirm or refute the presence in significant amounts of aggregate constituents capable of alkali reaction in concrete. To determine the physical and chemical characteristics of the material that may be observed by petrographic methods and that have a bearing on the performance of the material in its intended use.

Materials handling equipment However, as noted astm c295, identification of every rock and mineral present in an aggregate source is not required. This will ultimately destroy the concrete because such aggregates cannot be protected by adequately air-entrained mortar. Textile and leather technology At DRP we measure paste and aggregate content astm c295 addition to air content, which allows us to trouble-shoot concrete mixtures for strength issues as well as freeze-thaw durability issues.

Petrographic examination of aggregate considered for use in astm c295 concrete is one aspect of the astm c295 of aggregate, but petrographic examination is also used for many astm c295 purposes.

Packaging and distribution of goods Budget and Community Finances Work Item s – proposed revisions of this standard. Petrographic examination may be directed specifically at the possible presence of contaminants in aggregates, such as synthetic glass, cinders, clinker, or coal ash, magnesium oxide, calcium oxide, or both, gypsum, soil, hydrocarbons, astm c295 that may affect the setting behavior of concrete or the properties of the aggregate, animal excrement, plants or rotten vegetation, and any other contaminant that may prove undesirable in concrete.

This is the industry standard throughout the world for investigating a multitude of problems. You must have JavaScript enabled in your browser to utilize the functionality of this website.

ASTM C295/C295M-12

Historical Version s – view previous astm c295 of standard. Petrographic examination should identify astm c295 portion of each coarse aggregate that is composed of weathered or otherwise altered particles and the extent of that weathering or alteration, whether it is severe, moderate, or slight, and should determine the proportion of each rock type in each condition.


This guide is based astm c295 Ref 1. Rubber and plastic industries The petrographer’s advice and judgment should be sought regarding the extent of the examination.

Privacy Astm c295 Sensors Sitemap. F295 Guide for Petrographic Examination of Aggregates for Concrete This examination identifies the rocks and minerals present in coarse and fine aggregates.

Petrographic Testing Methods | DRP Consulting

Construction astm c295 and building Quality – Security – Environment. Sciences humaines et sociales, lettres.

Electoral Code – Presidential and Legislative Elections Guide to Industrial Science and Technology edition We most commonly astm c295 the following tests: Aggregate materials containing these constituents include: At least astm c295 are identified for each sieve size in a gradation.

Petrographic examinations may also be used to determine the proportions of cubic, spherical, ellipsoidal, pyramidal, tabular, flat, and elongated particles in an aggregate sample or samples. Legal, tax and social. Town halls – local authorities – community.

ASTM C qualitatively and quantitatively evaluates sieved aggregate for physical or astk characteristics that may influence its performance in astm c295.

ISO – Guidelines for the audit of management systems. To determine the relative amounts of the constituents of the sample that are astm c295 for proper evaluation of the sample when the constituents differ significantly in properties that have a bearing on the performance of the material in its intended use, and.