ASTM C617 Full Name. ASTM C617 – Standard Practice for Capping Cylindrical Concrete Specimens. Scope. ASTM C617 provides guidelines and procedures for capping cylindrical concrete specimens. Capping is the process of creating a smooth, plane surface on the ends of concrete cylinders to ensure accurate and reliable compressive strength testing.
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WhatsApp: +86 18221755073ASTM C617 permits a bonded cap to be applied to freshly molded cylinders using neat portland cement paste; whereas neat portland cement paste, high strength gypsum plaster or sulfur mortar are permitted as bonded capping materials for hardened concrete cylinders. Since sulfur mortar and unbonded caps are the most
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WhatsApp: +86 18221755073Capping compound, ultra strong flake type This compound is a mixture of sulphur and mineral filler; the compressive strength of 8000 - 9000 Psi is granted (at two hours) on a 2" cube specimen, as requested by ASTM …
WhatsApp: +86 18221755073TAIWAN CAPSTONE uses pure gypsum to produce the high strength capping gypsum without adding extra filler. This procedure conforms to the regulations of ASTM C617 5.3.1 standard. 3. The water-gypsum ratio for S-350 is recommended to be 23~24%. After mixing with water for 30 mins, the gypsum will be fully solidified and reach the
WhatsApp: +86 18221755073Our product, high strength capping gypsum, can reach 5,000~9,000 psi (350~630 kgf/cm2) after mixing with water for 30 mins. This type of gypsum is used as capping material for concrete compression test according to ASTM C617 and AASHTO T231 standard. Therefore, our high strength capping gypsum is qualified and approved to …
WhatsApp: +86 18221755073Inspection Equipment Required for Gypsum or Neat Cement Capping Material: 1. Scale readable to 0.1 g or better 2. Mixer, bowl and paddle 3. Cube mold 4. Mineral oil 5. Tamper 6. ... Allow sulfur to gain strength at room temperature. For cylinder strengths less than 5000 psi (35 MPa), allow at least 2 hours. For cylinder strengths of 5000 psi ...
WhatsApp: +86 18221755073Repeat the same procedure to cap the other end of the cylindrical test specimen. Note. This type of capping is done after removing the concrete cylinder from the mould. 3. Gypsum Plaster Capping. Prepare a stiff plaster by mixing gypsum & water at a desired ratio. While preparing the paste mix it well enough. This will help gypsum to …
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WhatsApp: +86 18221755073This practice covers apparatus, materials, and procedures for capping freshly molded concrete cylinders with neat cement and hardened cylinders and drilled concrete cores with high-strength gypsum paste or sulfur mortar. The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each …
WhatsApp: +86 18221755073These capping materials included a sulfur compound, gypsum capping compound, and neoprene pads with different durometer hardness values. Neoprene pads with Shore A durometer hardness values of 20, 40, 50, 60, and 70 were incorporated into the test program. ... "Effect of elastic modulus of capping material on measured …
WhatsApp: +86 1822175507308/14/2024 UPDATE: The current expectation for product availability is the end of November 2024. Capping Compound Hi-Cap2. Hi-Cap2 Capping Compound is used during concrete sample preparation for compressive strength testing by adhering in its liquid-viscous state to cover all imperfections or rough surfaces and creating a totally flat …
WhatsApp: +86 18221755073Compared with other methods, gypsum capping is the most convenient, efficient, rapid, and safest capping method. TAIWAN CAPSTONE uses pure gypsum to produce the high strength capping gypsum without adding extra filler. This procedure conforms to the regulations of ASTM C617 5.3.1 standard.
WhatsApp: +86 182217550735.1.1 If sulfur mortar, high strength gypsum paste and other materials except neat cement paste are to be used to test concrete ... 5.1.3 The compressive strength of capping materials shall be determined by testing 50 mm [2 in.] cubes following the procedure described in Test Method C109/C109M. Except for sulfur mortars, molding procedures ...
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WhatsApp: +86 18221755073This compound is a mixture of sulphur and mineral filler; the compressive strength of 8000 - 9000 Psi is granted (at two hours) on a 2" cube specimen, as requested by ASTM C617 Standards. On a 150 mm dia. …
WhatsApp: +86 18221755073Standard: ASTM C617/AASHTO T231 Capping Compound Gypsum capping compound for high strength capping preparation, it can achieve strength from 5000 - 9000 psi (350~630 kgf/cm²)after mixing with water for 30 mins. Gypsum is a fast, safer, easier and cheaper method compound with sulfur capping, rubber pad capping and grinding …
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WhatsApp: +86 18221755073High Strength Gypsum Different grade capping gypsum for different strengths of concrete. Learn More. Ultimate Grade: S-630 Ultimate strength performance. Learn More. Surface Flatness Provides an ideal test surface with complete flatness perpendicularity and horizontality. Reach the highest compressive strength value and …
WhatsApp: +86 18221755073Melting pot to prepare capping compound. Capacities from 4 to 28qt (3.8 to 26.5L) are available; Ladle for transferring molten capping compound; Cylinder Capper positions cylinders properly for insertion into the compound and during hardening; The Thermometer ensures the temperature of the compound is between 265° and 290°F (130° to 145°C)
WhatsApp: +86 18221755073It provides top performance, even for high-strength concrete tests. The capping compound melts quickly at 240° – 260°F (116° – 127°C). It pours at about 275°F (135°C), and hardens in minutes with minimal shrinkage. Its compressive strength exceeds 8,000 psi at 2 hours for the 2" cube test of ASTM C617.
WhatsApp: +86 18221755073with two additional restrictions. First, the capping material must be high-strength gypsum cement. While ASTM C1552 allows for gypsum and sulfur capping material, only gypsum is acceptable for capping concrete pavers for compressive strength testing. 6HFRQG WKH¿QDOFDSWKLFNQHVVFDQQRWH[FHHG LQ mm).
WhatsApp: +86 18221755073TAIWAN CAPSTONE uses pure gypsum to produce the high strength capping gypsum without adding extra filler. This procedure conforms to the regulations of ASTM C617 5.3.1 standard. 3. The water-gypsum ratio for S-420 is recommended to be 21~22%. After mixing with water for 30 mins, the gypsum will be fully solidified and reach the
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WhatsApp: +86 18221755073Sulfur Capping Compound Features Accurate reporting of the compressive strength of your concrete samples is crucial. Sulfur Capping Compound allows for consistent and accurate results and provides a clear distinct break plane. Please see our product features below. Quality of Manufacturing Ultra-thin flakes are carefully manufactured to the …
WhatsApp: +86 18221755073It is a cost-effective solution compared to pouring a new layer or using specialized resurfacing compounds. Capping maintains structural integrity and delivers excellent results. ... ASTM C617 permits the use of neat portland cement paste, high strength gypsum glue, plaster, or sulfur mortar. How long does it take for a concrete …
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WhatsApp: +86 182217550735. Capping Materials 5.1 The strength of the capping material and the thickness of the caps shall conform to the requirements of Table 1. 5.1.1 If sulfur mortar, high strength gypsum plaster and other materials except neat cement paste are to be used to test concrete with a strength greater than 7000 psi (50 MPa), the
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WhatsApp: +86 182217550733.1 This practice describes procedures for providing plane surfaces on the ends of freshly molded concrete cylinders, hardened cylinders, or drilled concrete cores when the end surfaces do not conform with the planeness and perpendicularity requirements of applicable standards. Practice C1231/C1231M describes alternative …
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