ASTM C897 PDF
ASTM C Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters. Questions and answers on Stucco and Plastering March, Graded sand for cement-plaster and interior plaster. ASTM C , and ASTM C Find ASTM C products and abstract using the BuildSite database. Get the right product for the spec.
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We recommend users of early versions of Internet Explorer to update to Version 10 or later. The varied grits, or different particle size adds increased strength and crack resistance to stucco. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the specification. Q-ROK is graded quartzite, which means crushed quartz or crushed white sandstone.
This chart is completely ambiguous if you do the math, but the idea is that the sand is graded from coarse down to fine powder. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This abstract is a brief summary of the referenced standard.
Use on a local area network or other network is not permitted. Number two is all mediumand number 1 is all fine. What this means in human readable terms: The reason is that the smaller grains fill in the voids when the mortar is packed down.
The breaking strength of these boats was well over 10, PSI. I know somebody out west who plasters boats.
Silica sand usually crushed quartz or sandstone is passed through various screen sizes and measured as to the percentage of what size the grains are. The main difference is that number 3 is all the qstm size about 3 mm.
Imagine how strong other high abuse applications can be, such as mud floors, simply by spending a few bucks for graded silica sand. Aggregate subjected to five cycles of the soundness test atsm show a loss, d897 weighed in accordance with the grading of a sampling complying with the limitations set forth. This is what we usually use in asfm stucco finish coat. The fineness modulus, friable particles, light constituents, organic impurities, material soundness, and sieve analysis of the aggregate shall be tested to meet the requirements prescribed.
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Historical Version s – view previous versions of standard.
ASTM C – 00 Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters
Fine powder is packaged as silica fines. The word “pound” in Spanish, Italian and Latin is “Libra”. ASTM C to the rescue.
Now, gypsum plaster is only avaiable in 50 lb. To put this into perspective, the footers under your house are probably about 2, PSI. When used as a stucco finishdifferent grades are usually mixed together to vary the size for improved strength and appearance. 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. 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.
For a volume license the PDF is licensed to the person in which it is assigned. Have you ever wondered why the word “pound” is abbreviated lb. His formula is 7 bags of varied grits of sand, that is one bag each of 1, 2, etc. ASTM C is currently being specified a lot for satm basecoat plaster in Federal government work. Link to Active This link will always route to the current Active version of the standard. The PDF Download is licensed per asgm in which the individual can place on up to four electronic devices for their personal use.
When used in a cement basecoat for high strength applications such as stucco floors or cement boats, the various grits can quadruple the compressive strength of Portland cement mortar.
Aggregate subjected to five cycles of the soundness test shall show a loss, when weighed in accordance with the grading of a sampling complying with the limitations set forth.
Sand like Q-ROK atm used in stucco finishes, but the grading is different.
Distribution of the PDF is not permitted. This specification covers natural or manufactured aggregate for use in job-mixed base and finish-coat full thickness Portland cement, Portland cement-lime and modified Portland cement plasters.