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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When used as a stucco finishdifferent grades are usually mixed together to vary the size for improved strength and appearance. The main difference is that number 3 is all the same size about 3 mm. I know somebody out west who plasters boats. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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Q-ROK is graded quartzite, which means crushed quartz or crushed white sandstone. 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.
Graded sand for cement-plaster and interior plaster, ASTM C , and ASTM C
This abstract is a brief summary of the referenced standard. This option is mobile friendly and compatible with all devices, including mobile tablets and smart phones. What I am trying to say with all of this is that mortar can develop incredible strength by simply varying the grit c89 the sand, and using silica sand.
The PDF Download is licensed per individual in which the individual can place on up to four electronic devices for cc897 personal use. His formula is 7 bags of varied grits of sand, that is one bag each of 1, 2, etc.
The word “pound” in Spanish, Italian and Latin is “Libra”. 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.
ASTM C is ast in bags for about 11 dollars a 50 lb. Q-ROK comes in 3 grades, 1, or fine; 2, or medium and 3, coarse. The reason is that the smaller grains fill in the voids when the mortar is packed down.
ASTM C is currently being specified a lot for interior basecoat plaster in Federal government work. 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. Distribution of the PDF is not permitted.
ASTM C to the rescue. 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. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the specification. What this means in human readable terms: For a volume license the PDF is licensed to the person in which it is assigned.
To put this into perspective, c97 footers under your house are probably about 2, PSI. This sandblasting sand is graded from medium about mm down to a very fine powder. The varied grits, or different particle size adds increased strength and crack resistance to stucco.
Another mystic secret revealed: Also, since the sand is irregularly shaped, larger width particles can pass through the sieves. Now, gypsum plaster is only avaiable in 50 lb.
Sand like Q-ROK is used in stucco finishes, but the grading is different. Fine powder is packaged as silica fines. Historical Version s – view previous versions of standard. Use on a local area network or other network 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. Imagine how strong other high abuse applications can be, such as mud floors, simply by spending a few bucks for graded silica sand.
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. 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.
More about dollars and cents: 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.
ASTM C – 00 Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters
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. Number two is all mediumand number 1 is all fine. The sand is then graded from less than 2.