A study of hard finish gypsum plasters the best known representative of this group is keenes cement, which was first produced in england. We used it over the years as a finish for bathrooms and kitchens, because keenes is very water resistent and super hard making for. Note 2keenes cements are generally available as quicksetting and standardsetting types. Keenes cement definition is a hard finish gypsum plaster to which alum has been added and which is used chiefly as a gauging plaster in lime mortar for walls as of hospitals, stores, railroad stations where an unusually tough and durable plaster is required. Plaster of paris is calcined with alum to get keenes cement plaster. Section 09 23 00, gypsum plastering veterans affairs. Alternate names are martins cement and parian cement. We used it over the years as a finish for bathrooms and kitchens, because keene s is very water resistent and super hard making for scrubbable walls. Provisions of this chapter shall govern the materials, design, construction and quality of gypsum board, lath, gypsum plaster and cement plaster. Astm c 61c 61m00 2006 specification for gypsum keenes. For a trowel finish coat using limeportland cement plaster, the recommended proportions are 200 prods of hydrated lime or 5 cubic feet of lime putty to 94 pounds of portland cement. To read pdf files, you need the adobe acrobat reader 6. Mixes with lime putty to deliver a strong, crackresistant finish.
C 206 masonry cement astm c 91 metal lath astm c 847. Use for all walls and ceilings not required to have keenes cement or highstrength gypsum plaster. My picasa slide show of some color keene s cement finishes we did. Usg red top brand keenes cement submittal sheet english. Exterior plasters, often called stucco, normally contain portland cement because of its low solubility in water. Usg gypsum plaster finish coat plasters architectural. This type of cement, generally known as keenes cement, requires severeal hours to set, but on setting it 2.
For a hard finish, the recommended proportions are 25 pounds of hydrated lime or 50 pounds of lime putty to 100 pounds of keenes cement. We used it over the years as a finish for bathrooms and kitchens, because keenes is very water resistent and super hard making for scrubbable walls. Buildings and structures located within the highvelocity hurricane zone shall comply with the pro. Keenes cement flooring cement article about keenes. Add sand and water to the lime putty, also hair for the scratch coat. Portland cement retarder 123,456 123,456 123,456 123,456 493,824. Keenes cement, and all other manufacturers gauging plasters for high plasticity, tight bonding and. Provide base and finish coats of plaster on walls, partitions, furring, and ceilings to match all. For strong, abrasionresistant interior finishes with veneer plaster. Consisting of anhydrous gypsum plaster and an accelerant, alum, keene s cement is normally applied over portland cement often using several coats. United kingdom keenes cement, keenes cement from united kingdom supplier find variety keenes cement from cement making machinery,cement plant,fiber cement board, cement suppliers located in united kingdom, buy keenes cement made in united kingdom on.
Special plastering materials for different purposes used in buildings. Us3226243a us231849a us23184962a us3226243a us 3226243 a us3226243 a us 3226243a us 231849 a us231849 a us 231849a us 23184962 a us23184962 a us 23184962a us 3226243 a us3226243 a us 3226243a authority us united states prior art keywords composition plastering weight parts concrete prior art date 19621019 legal status the legal status is an assumption and is not a legal conclusion. Usgs diamond veneer veneer brochure cs stucco and plaster. According to cole, keenes cement is a slow setting plaster, this property distinguishing it from other hard finish plasters which are quick setting. Portland cement plaster on metal lath, wire lath, or wire fabric, troweled smooth and painted. Consisting of anhydrous gypsum plaster and an accelerant, alum, keenes cement is normally applied over portland cement often using several coats. When mixed with lime, its highly calcined, white gypsum plaster produces durable and highly crackresistant smooth and sandfloat finishes. The product was developed by richard wynn keene and patented in 1838. Red top keenes cement requires a highstrength gypsum basecoat.
Manual by portland cement association and astm c11. The setting time is accelerated by the addition of other materials. Use ivory finish lime with high strength gauge, keenes cement, and all other manufacturers gauging plasters for high plasticity, tight bonding and smooth troweling sought by plasterers. A hard white finishing cement with a fast setting time and a high polish capability. For a type of gypsum plaster called keenes cement, the crushed gypsum rock is heated until nearly all the crystallization water is removed. Red top brand keenes cement is the ultimate choice for texturing. The removal of crystallization water from natural gypsum is a dehydration process. Factory mixed and packaged blend of gypsum, lime, and aggregate. Blended cement astm c 595 exterior plaster bonding compounds astm c 932 gypsum casting and molding plaster astm c 59 gypsum keenes cement astm c 61 gypsum plaster astm c 28 gypsum veneer plaster astm c 587 interior bonding compounds, gypsum astm c 631 lime plasters astm c 5.
Ivory finish lime is especially formulated to be compatible with standard gauging plasters. According to cole, keenes cement is a slow setting plaster, this property distinguishing it from other hard finish. It can be either gypsum gauging plaster or keenes cement for interior work or portland cement for exterior work. Jobmixed plasters include lime plasters, sand gauging plasters, and keenes cement. The gauging material is intended to produce early strength and to counteract shrinkage tendencies. Keene s cement definition is a hard finish gypsum plaster to which alum has been added and which is used chiefly as a gauging plaster in lime mortar for walls as of hospitals, stores, railroad stations where an unusually tough and durable plaster is required. The future of the plastering craft association of the. For lime plaster, lime in the form of either dry hydrate or lime putty is mixed with sand, water, and a gauging material. Keenes cement definition of keenes cement by merriam. Secure end laps with tie wire where they occur between supports. Keenes cement directions for mixing and applying base coat first mix the keenes cement in a dry form with an equal amount of sand, then add plenty of clean water. Plastering methods were refined by the greeks and romans. The stamped concrete finish is obtained by pressing the required patterns on the freshly levelled concrete. For a sprayapplied finish, mix red top keenes cementlimesand in proportion of 50 lbs.
Early plaster systems could contain lime, gypsum, marble dust, fibers and sand in up to three coats. Gauging plasterlime putty, red top brand keenes cementlimesandfloat finish or red top brand gauginglime putty finish. Full text pdf tikrit journal of engineering sciences. When mixed with lime, its highly calcined, deadburned white gypsum plaster produces durable, highly crackresistant, smooth and sandfloat finishes.
Keenes cement plaster or keenes cement is a hard plaster formulation, primarily used for ornamental work. Keenes cement is a form of gypsum in which, during the calcining process, all of the trapped water found in the gypsum is driven off. Gypsum keenes cement astm c 61 gypsum lath astm c 37 gypsum plaster astm c 28 gypsum veneer plaster astm c 587. The resulting material, called keenes cement, produces a very hard, finetextured finish coat. Wall finish materials wall finish materials shall be smooth, hard, and nonabsorbent. Finish coat plaster is permitted to be applied to interior cement plaster base coats after a 48hour period. The following are examples of approved wall finish materials.
The cement shall show a combined water content not more than the specified value when te astm c 61c 61m00 2006 specification for gypsum keenes cement pdf download javascript seems to be disabled in your browser. Us3226243a us231849a us23184962a us3226243a us 3226243 a us3226243 a us 3226243a us 231849 a us231849 a us 231849a us 23184962 a us23184962 a us 23184962a us 3226243 a us3226243 a us 3226243a authority us united states prior art keywords composition plastering weight parts concrete prior art date 19621019 legal status the legal status is an assumption and is not a. Note 1the setting time is accelerated by the addition of other materials. Plasters may be jobmixed or readymixed systems as needed to satisfy the requirement of the job. Ivory finish lime permits a thin finish coat, while. Astm c 475, standard specification for joint compound and. Apply metal lath taut, with long dimension perpendicular to supports. Product features red top keenes cement is the optimal choice for texture finishes. Keenes cement plaster shall be a highstrength, white, gypsum plaster used with finish lime putty for extremely hard, dense surfaces conforming to astm c 61, and federal specifications ssc161, type 1.
Concrete or concrete block covered with waterproof paint or plastic b. Keenes cement is the ultimate choice for texturing. For a spray applied finish, mix red top keenes cementlimesand in proportion of 50 lbs. Special plastering materials for different purposes used. This specification covers various grades of anhydrous calcined gypsum known as gypsum keenes cement, designed for use in the base and finish coats of gypsum plaster. Keenes cement plaster shall be a highstrength, white, gypsum plaster used with finish lime putty for extremely hard, dense surfaces conforming to astm c 61. This type of concrete finish after completion of their construction looks similar to stones such as slates or flagstones, brick, tile or with proper skill they can look similar to wood. The compound gives a hard finish that can be polished. Upon being blended with lime, the highly calcined, white, deadburned, gypsum plaster produces durable, exceptionally crackresistant, sand and smooth float finishes. Usg imperial basecoat plaster submittal sheet english p776. Tecidttcalinformationonbuildingmterials tibm2b forussinthedesignoflowcosthousing thenationalbureauofstaitdards ldhtedstatesdepartljentofcoml. Keenes cement, united kingdom keenes cement suppliers.
Plaster shall have a smoothtrowel finish unless specified or shown otherwise. Keene s cement is really a gypsum plaster, and the only gypsum plaster than can be retempered, that is water added andremixed when it sets up to bring it back to life. Jobmixed plasters include lime plasters, sand gauging plasters, and keenes. Keene s cement directions for mixing and applying base coat first mix the keene s cement in a dry form with an equal amount of sand, then add plenty of clean water. Us6790276b1 us10712,908 us71290803a us6790276b1 us 6790276 b1 us6790276 b1 us 6790276b1 us 71290803 a us71290803 a us 71290803a us 6790276 b1 us6790276 b1 us 6790276b1 authority us united states prior art keywords parts plaster cement keene water prior art date 20031112 legal status the legal status is an assumption and is not a legal conclusion. Red top keenes cement is the optimal choice for texture finishes. Keenes cement flooring cement, gypsum cement, hardburnt plaster, tiling plaster keel molding.
Keenes cement is really a gypsum plaster, and the only gypsum plaster than can be retempered, that is water added andremixed when it sets up to bring it back to life. Pages in category plastering the following 39 pages are in this category, out of 39 total. It is a calcined formulation of regular calcium sulfate plaster with an alum admixture. Subject to compliance with requirements, available products that may be incorporated into the work include, but are not limited to, the following. This product requires a highstrength gypsum basecoat. Keenes cementdurable and scrubbable stucco news december. Properties of keenes cementquick set locally product. Blends with lime putty to create durable, crackresistant smooth and sandfloat finishes.
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