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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Q-ROK comes in 3 grades, 1, or fine; 2, or medium and 3, coarse.
ASTM C is sold in bags for about 11 dollars a 50 lb. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Also, since the sand is irregularly shaped, larger width adtm can pass cc897 the sieves.
ASTM C is currently being specified a lot for interior basecoat plaster in Federal government work. Q-ROK is graded quartzite, which means crushed quartz or crushed white sandstone. The word “pound” in Spanish, Italian and Latin is “Libra”. To put this into perspective, the footers under your house are probably about 2, Ast.
F897 know somebody out west who plasters boats. 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.
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. Imagine how strong other high asfm applications can be, such as mud floors, simply by spending a few bucks for graded silica sand. The main difference aatm that number 3 is all the same size about 3 mm. This sandblasting sand is graded from medium about mm down to a very fine powder.
Number two is all mediumand number 1 is all fine. Historical Version s – view previous versions of standard. What this means in human readable terms: The reason is that the smaller grains fill in the voids when the mortar is packed down.
Sand like Q-ROK is used in stucco finishes, but the grading is different. Fine powder is packaged as silica fines. 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 fineness modulus, friable particles, light constituents, organic impurities, material soundness, and sieve analysis of the aggregate shall be tested to meet the requirements prescribed. For a volume license the PDF is licensed to the person in which it is assigned.
More about dollars and cents: 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 of the sand, and using silica sand.
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.
This specification covers natural or manufactured c8897 for use in job-mixed base and finish-coat full thickness Portland cc897, Portland cement-lime and modified Portland cement plasters. When used as a stucco finishdifferent grades are usually mixed together to vary the size for improved strength and appearance.
Use on a local area network or other network is not permitted. This abstract is a brief summary of the referenced standard.
astmm The varied grits, or different particle size adds increased strength and crack resistance to stucco. Link to Active This link will always route to the current Active version of the standard.
The PDF Download is licensed per individual in which the individual can place on up to four electronic devices for their personal use.
ASTM C – 00 Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters
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. Now, gypsum plaster is only avaiable in 50 lb. Distribution of the PDF is not permitted. We recommend users of early versions of Internet Explorer to update to Version 10 or later.
His formula is 7 bags of varied grits of sand, that is one bag each of 1, 2, etc. 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. 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.