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07160 | CEMENTITIOUS CRYSTALLINE
\nConcrete Waterproofing<\/p>\n
[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text]Xypex is a unique chemical treatment for the waterproofing, protection and improvement of concrete. XYPEX ADMIX C-500 NF is added to the concrete mix at the time of batching. Xypex Admix C-500 NF consists of Portland
\ncement and various active, proprietary chemicals. These active chemicals react with the moisture in fresh concrete and with the by-products of cement hydration to cause a catalytic reaction. This reaction generates a non-soluble crystalline formation throughout the pores and capillary tracts of the concrete that permanently seals the concrete and prevents the penetration of water and other liquids from any direction.[\/vc_column_text][vc_row_inner][vc_column_inner width=”1\/2″][vc_column_text]Description
\nXypex is a unique chemical treatment for the waterproofing, protection and improvement of concrete. XYPEX ADMIX C-500 NF is added to the concrete mix at the time of batching. Xypex Admix C-500 NF consists of Portland
\ncement and various active, proprietary chemicals. These active chemicals react with the moisture in fresh concrete and with the by-products of cement hydration to cause a catalytic reaction. This reaction generates a non-soluble crystalline formation throughout the pores and capillary tracts of the concrete that permanently seals the concrete and prevents the penetration of water and other liquids from any direction.
\nXypex Admix C-Series
\nThe Admix C-Series has been specially formulated to meet varying project and temperature conditions. Xypex Admix C-500 NF is specifically formulated to meet modern concrete practices that incorporate additives such
\nas fly ash and slag. For most concrete mix designs adding the Admix C-500 NF will have minimal or no effect on setting time. Xypex Admix C-1000 NF is designed for
\ntypical Portland cement-rich concrete, where normal to
\na mild retarded set is desired. Xypex Admix C-2000 NF is designed for projects where extended retardation
\nis required due to high ambient temperatures or long ready-mix delivery times. See Setting Time and Strength for more details. Consult with a Xypex technical services representative for the most appropriate Xypex Admix for your project.
\nRecommended for:
\n\u2022 Reservoirs
\n\u2022 Sewage and Water Treatment Plants
\n\u2022 Secondary Containment Structures
\n\u2022 Tunnels and Subway Systems
\n\u2022 Underground Vaults
\n\u2022 Foundations
\n\u2022 Parking Structures
\n\u2022 Swimming Pools
\n\u2022 Precast Components
\nAdvantages
\n\u2022 Resists extreme hydrostatic pressure from either
\npositive or negative surface of the concrete
\n\u2022 Becomes an integral part of the substrate
\n\u2022 Highly resistant to aggressive chemicals<\/p>\n
\u2022 Can seal static hairline cracks up to 0.4 mm
\n\u2022 Allows concrete to breathe
\n\u2022 Non-toxic
\n\u2022 Less costly to apply than most other methods
\n\u2022 Permanent
\n\u2022 Added to the concrete at time of batching and
\ntherefore is not subject to climatic restraints
\n\u2022 Increases flexibility in construction scheduling
\nPackaging
\nXypex Admix C-500 NF is packaged in various sizes. Contact your local Xypex representative for details.
\nStorage
\nXypex products must be stored dry at a minimum temperature of 7\u00baC. Shelf life is one year when stored under proper conditions.
\nDosage Rates
\nXypex Admix C-500 NF (No Fines Grade):
\n1% – 1.5% by weight of cement
\nNOTE: Under certain conditions, the dosage rate for No Fines Grade may be as low as 0.8% depending on the quantity and type of total cementitious materials.
\nConsult with Xypex\u2019s Technical Services Department for assistance in determining the appropriate dosage rate and for further information regarding enhanced chemical resistance, optimum concrete performance, or meeting the specific requirements and conditions of your project.
\nTest Data
\nPERMEABILITY
\nU.S. Army Corps of Engineers CRD C48-73,
\n\u201cPermeability of Concrete\u201d, Aviles Engineering Corp., Houston, USA
\nTwo concrete samples containing Xypex Admix at 3% and 5% respectively, and an untreated control sample were tested for water permeability. Both the treated and untreated samples were subjected to a pressure of 150 psi (350 ft. water head). Results showed moisture and permeated water throughout the untreated sample after 24 hours. However, the Xypex Admix samples showed no leakage, and water penetration of only 1.5 mm after 120 hours (5 days).[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_column_text]Application Procedures<\/p>\n
1. SURFACE PREPARATION Concrete surfaces to be treated must be clean and free of laitance, dirt, film, paint, coating or other foreign matter. Surfaces must also have an open capillary system to provide \u201ctooth and suction\u201d for the Xypex treatment. If surface is too smooth (e.g. where steel forms are used) or covered with excess form oil or other foreign matter, the concrete should be lightly sand-blasted, waterblasted, or etched with muriatic (HCL) acid.<\/p>\n
2. STRUCTURAL REPAIR Rout out cracks, faulty con-struction joints and other structural defects to a depth of 37 mm and a width of 25 mm. Apply a brush coat of Xypex Concentrate as described in steps 5 & 6 and allow to dry for 10 minutes. Fill cavity by tightly compressing Dry-Pac into the groove with pneumatic packing tool or with hammer and wood block. Dry-Pac is prepared by mixing six parts Xypex Concentrate powder with one part water to a dry, lumpy consistency.<\/p>\n
NOTE:
\n\u2022 Against a direct flow of water (leakage) or where there is excess moisture due to seepage, use Xypex Patch\u2019n Plug then Xypex Dry-Pac followed by a brush coat of Xypex Concentrate. (Refer to Xypex Specification and Application Manual for full details.)
\n\u2022 For expansion joints or chronic moving cracks, flexible materials such as expansion joint sealants should be used.<\/p>\n
3. WETTING CONCRETE Xypex requires a saturated substrate and a damp surface. Concrete surfaces must be thoroughly saturated with clean water prior to the application so as to aid the proper curing of the treatment and to ensure the growth of the crystalline formation deep within the pores of the concrete. Remove excess surface water before the application. If concrete surface dries out before application, it must be re-wetted.
\n4. MIXING FOR SLURRY COAT Mix Xypex powder with clean water to a creamy consistency in the following proportions:
\n\u2022 For Brush Application
\n\u2022 0.65 – 0.8 kg\/m2
\n\u2022 5 parts powder to 2 parts water
\n\u2022 kg\/m2
\n\u2022 3 parts powder to 1 part water
\n\u2022 For Spray Application
\n\u2022 0.65 – 0.8 kg\/m2
\n\u2022 5 parts powder to 3 parts water (ratio may vary with equipment type)
\n\u2022 Do not mix more Xypex material than can be applied in 20 minutes. Do not add water once mix starts to harden. Protect hands with rubber gloves.
\n5. APPLYING XYPEX Apply Xypex with a semi-stiff nylon bristle brush, push broom (for large horizontal surfaces) or specialized spray equipment. The coating must be uniformly applied and should be just under 1.25 mm.<\/p>\n
When a second coat (Xypex Concentrate or Xypex<\/p>\n
Modified) is required, it should be applied after the first coat has reached an initial set but while it is still \u201cgreen\u201d (less than 48 hours). Light pre-watering between coats may be required due to drying. The Xypex treatment must not be applied under rainy conditions or when ambient temperature is below 4\u00baC. For recommended equipment, contact Xypex Chemical Corporation or your local Xypex representative.<\/p>\n
6. CURING A misty fog spray of clean water must be used for curing the Xypex treatment. Curing should begin as soon as the Xypex has set to the point where it will not be damaged by a fine spray of water. Under normal conditions, it is sufficient to spray Xypex-treated surfaces three times per day for two to three days. In hot or arid climates, spraying may be required more frequently. During the curing period, the coating must be protected from rainfall, frost, wind, the puddling of water and tem-peratures below 2\u00baC for a period of not less than 48 hours after application. If plastic sheeting is used as protec-tion, it must be raised off the Xypex to allow the coating to breathe. Xypex Gamma Cure may be used in lieu of water curing for certain applications (consult with Xypex<\/p>\n
Chemical Corporation or your local Xypex representative).
\nNOTE: For concrete structures that hold liquids (e.g. reservoirs, swimming pools, tanks, etc.), Xypex should be cured for three days and allowed to set for 12 days before filling the structure with liquid.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"
[vc_row][vc_column][vc_row_inner][vc_column_inner width=”2\/3″][vc_single_image image=”1297″ img_size=”full”][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_column_text] ADMIX C-500 NF 07160 | CEMENTITIOUS CRYSTALLINE Concrete Waterproofing [\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text]Xypex is a unique chemical treatment for the waterproofing, protection and improvement [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"yoast_head":"\n