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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The main difference is that number 3 is all the same size about 3 mm. To put this into perspective, the footers under your house are probably about 2, PSI. Aggregate subjected to five cycles astj the soundness test shall show a loss, when weighed in accordance with the grading of a sampling complying with the limitations set forth.
What this means in human readable terms: We recommend users of early versions of Internet Explorer to update to Version 10 or later. 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.
I know somebody c87 west who plasters boats. Use on a local area network or other network is not permitted. This chart is completely ambiguous if astmm do the math, but the idea is that the sand is graded from coarse down to fine powder.

The breaking strength of these boats was well over 10, PSI. Another mystic secret revealed: Q-ROK is graded quartzite, which means crushed quartz or crushed white sandstone. The word “pound” in Spanish, Italian and Latin is “Libra”. ASTM C is sold in bags for about 11 dollars a 50 lb. 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.
This atm is a brief summary of the referenced standard. Q-ROK comes in 3 grades, 1, or fine; 2, or medium and 3, coarse.
Link to Active This link will always route asttm the current Active version of the standard. ASTM does not give any warranty express ast, implied or make any representation that the contents of this abstract are accurate, complete or up to date. JavaScript seems to be disabled in your browser.
His formula is 7 bags of varied grits of sand, that is one bag each of 1, asttm, etc. Now, gypsum plaster is only avaiable in 50 lb. 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. Referenced Documents purchase separately The documents astj below are referenced within the subject standard but are not provided as part of the standard.
More about dollars and cents: 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.
Historical Version s – view previous versions of standard.
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When used as a stucco finishdifferent grades are usually mixed together to vary the size for improved strength and appearance.
This specification covers natural or manufactured awtm for use in job-mixed d897 and finish-coat full thickness Portland cement, Portland cement-lime and modified Portland cement plasters.
The sand is then graded from less than 2. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 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.
Fine powder is packaged as silica fines. What I am trying to say with all of this is that mortar can develop incredible strength by simply varying the grit of the sand, and using silica sand. You must have JavaScript enabled in your browser to utilize the functionality of this website.
ASTM C – 00 Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters
Sand like Q-ROK is used in stucco finishes, but the grading is different. ASTM C to the rescue. When used in a cement basecoat for high strength applications such as stucco floors or cement boats, the various sstm can quadruple the compressive strength of Portland cement mortar. Number two is all mediumand number 1 is all fine.

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. Also, since the sand is irregularly shaped, larger width particles can pass through the sieves. The PDF Download is licensed per individual in which the individual can place on up to four electronic devices for their aastm use.
This is what we usually use in our stucco finish coat. For a volume license the PDF is licensed to the person in which it is wstm. Imagine how strong other high abuse applications can be, such as mud floors, simply by spending a few bucks for graded silica sand.
This option is mobile friendly and compatible with all devices, including mobile tablets and smart phones. The reason is that the smaller grains fill in the voids when the mortar is packed down. Have you ever wondered why the word “pound” is abbreviated lb.
This sandblasting sand is graded from medium about mm down to a very fine powder. 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 currently being specified a lot for interior basecoat plaster in Federal government work.
