This standard is issued under the fixed designation C ; the number immediately 1 This test method is under the jurisdiction of ASTM Committee C09 on. ASTM C/CM: Standard Test Method for Determining Age at Cracking and Induced Tensile Stress Characteristics of Mortar and Concrete under. Buy ASTM C TEST METHOD FOR DETERMINING AGE AT CRACKING AND INDUCED TENSILE STRESS CHARACTERISTICS.
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The data are visualized online graphical and numerical on the screen. Historical Version s – view previous versions of standard. A sample of freshly mixed mortar or concrete is compacted in a circular mold around an instrumented steel ring. Thickness 13 mm, outer diameter mm, height mm, weight October 18, The compressive strain developed in the steel ring caused by shrinkage of the mortar or concrete specimen is measured with 4 strain gages from the time of casting.
Shrinkage Ring – Measuring the Restrained Shrinkage | Qualitest
Serial digital SMB bus interface to the data logger S A data-logger supplied with the system records strain gage data and stores it in the logger as standard ASCII files. This test method covers the laboratory determination of the age at cracking and induced tensile stress characteristics of mortar or concrete specimens under restrained shrinkage.
Network interface and built in WEB-Server, software pre-installed. Request a Quote Request Services. The specimen is cracking after 6. The age c181 cracking and the rate of tensile stress development in the test specimen are indicators of the materials resistance to cracking under restrained shrinkage cited c158 the standard.
Schleibinger Testing Systems
The logger has a network interface Ethernet. This test method covers the laboratory determination of the age at cracking and induced tensile stress characteristics of mortar or concrete specimens under restrained shrinkage. The data are visualized online graphical aztm numerical on the screen.
Combining values from the two systems may result in non-conformance with the standard. Base made of PP. The logger has a network interface Ethernet.
Schleibinger Testing Systems – ASTM-Shrinkage Ring
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A data-logger supplied with the system records strain gage data and store it in the logger as standard ASCII files.
Warning —Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. Powered by CMSimple Asgm So you can easily integrate it into local intranet.
With a standard web-browser software you can readout the data and visualize it. Outer ring made of stainless steel. Measurement Principle A sample of freshly mixed mortar or concrete is compacted in a circular mold around an instrumented steel ring.
A sample of freshly mixed mortar or concrete is compacted in a circular mold around an instrumented steel ring.
Cracking of the test specimen is indicated by a sudden decrease in the steel ring strain. These variations can include, but are not limited to, aggregate source, aggregate gradation, asfm type, cement content, water content, supplementary cementing materials, or chemical admixtures. Actual cracking tendency in service depends on many variables including type of structure, degree of restraint, rate of property development, construction and curing methods, and environmental conditions.
Link to Active This link will always route to the current Active version of the standard. The procedure can be used to determine the effects of variations in the proportions and material properties of mortar or concrete on cracking due to both drying shrinkage and deformations caused by autogenous shrinkage and heat of hydration. Strain gage amplifier, thermocouple type K input and digitizing unit, mounted inside the inner ring. Data logger with an interface for up to atm rings S No special PC software is necessary.
Two temperature channels and a mixed temperature-humidity channel are available.
Optional a synchronous registration of temperature and humidity of a balance is possible. Work Zstm s – proposed revisions of this standard. ASTM C This test method covers the laboratory determination of the age at cracking and induced tensile stress characteristics of mortar or concrete specimens under restrained shrinkage.