ASTM C309 PDF
This standard is issued under the fixed designation C ; the number immediately 1 This specification is under the jurisdiction of ASTM Committee C09 on. C Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete Standard + Redline PDF Bundle, 6, $, ADD TO CART. The ASTM C is the standard instituted by The American Society for Testing and. Materials for curing compounds that form a surface.
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Notes: AASHTO M has been superseded by ASTM C All Curing materials carried over the winter must be re-tested prior to use. This list. This paper will provide background information on what the ASTM C standard is, and how a product can meet or fail to meet that standard for curing concrete. ASTM C Requirements in an Advanced Industry Forming Curing Compounds for Concrete – or ASTM C – was developed when.
Referenced Documents the purchase order when applicable: 4. Many agencies use the Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee same rate for field application on relatively smooth surfaces as the rate C Current edition approved July 10, Published September Originally approved in Last previous edition approved in as C 98a.
If not specified, the material with When required by the purchaser, the manufacturer shall furnish 4. VOC content if required by applicable regulations.
The VOC content shall be determined according to Practice D or as required by the applicable specifications.
ASTM C-309 Curing Compound
It is the 5. General Requirements responsibility of the purchaser to specify and apply the product 5.
Membrane-forming compounds tions. Water Retention Properties shall become inconspicuous within 7 days after application if 6. The disappearance of these colors is strongly dependent on the nature of the 7.
Reflectance Properties exposure and the rate of application of the compounds. The membrane-forming compound shall present a uniform white appearance when applied uni- 8. Drying Time Requirement formly to a new concrete surface at the specified rate of 8.
Sampling by brushing or rolling, when specified, to a uniform coating at 9. If sampling is done prior to shipment, the inspector surfaces, the specified rate of application may be achieved by two coats representing the purchaser shall have free access to the applied at an interval of approximately 1 h. Take one sample for each lot, concrete, and shall form a continuous film when applied at the batch, or other unit of production in a shipment.
If the liquid specified rate of application. Deleterious reactions are detected tank at the beginning of the filling operation, one third shall by scratching the surface of a mortar specimen used for the represent the material coming at the middle of the filling water-retention test with a knife or screwdriver, not less than operation, and one third shall represent the material coming at 72 h after application, and comparing with the surface hardness the end of the filling operation. If the liquid membrane-forming similarly determined of a similar specimen that has been compound to be sampled is in containers, obtain a sample by moist-cured for approximately half as long.
Any softening of taking a portion out of a number of containers equal in number the liquid membrane-forming compound-treated surface indi- to the next integer larger than the cube root of the total number cated by such a comparison shall be considered sufficient cause of containers in the lot.
The NOTE 6Testing for deleterious reactions need only be done for curing sampling agency shall mark each container represented by the compounds of a new or unknown composition. Type 2 liquid membrane-forming compounds shall 7 Toxicity is dependent on the type of material, duration of exposure, and not settle out excessively or cake in the container, and shall be concentration.
Concentration will depend on conditions under which the membrane- capable of being mixed to a uniform consistency by moderate forming compound is used, that is, in an enclosed space, outside without wind, or outside with wind. Relative toxicity of some materials may be determined from the stirring or agitation. When tested for long-term settling, as current edition of Threshold Limit Values of Airborne Contaminants Adopted by stated in Note 1—This specification addresses only those properties listed in Sections 5 through 8.
TYPE refers to color only
Membrane-forming compounds with special properties including better water retention, minimum solids content, resistance to ultraviolet radiation, acid and alkali resistance and non-interference with adhesives are described in Specification C Note 2—Solutions of silicate salts are chemically reactive in concrete rather than membrane-forming; therefore, they do not meet the intent of this specification. The values given in parentheses are provided for informational purposes only.
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. These notes and footnotes shall not be considered as requirements of the standard.
The allowable composition of products covered by this specification is limited by various local, regional, and national regulations. Issues related to air quality solvent emission , worker exposure, and other hazards are not addressed here.
It is the responsibility of the producers and users of these materials to comply with pertinent regulations. Warning Some VOC exempt solvents used to meet the regulations are extremely flammable with low auto ignition temperatures and rapid evaporation rates.
Consult the manufacturer's product information sheet for important application and safety information.It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
Infiltration Control — Cementitious Material a. Issues related to air quality solvent emission , worker exposure, and other hazards are not addressed here.
These notes and footnotes shall not be considered as requirements of the standard.
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
These notes and footnotes shall not be considered as requirements of the standard. 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. SCP technology features include:
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