请通过我们伯英科技联系我们!混凝土收缩测量仪 Shrinkage measurement of concrete and mortar normalized prismsDescription - PrincipleConcrete drying shrinkage can be measured in laboratory. The American Concrete Institute (ACI) 302 Guide for Concrete Floor and Slab Construction recommends following ASTM C157 “Standard Test Method for Length Change of Hardened Hydraulic-Cement". In this way, CAD Instruments developed and offers 2 devices for measuring the length variation of concrete or mortar prism along drying time. These 2 instruments, called retractometer 混凝土收缩测量仪RE101040 and 混凝土收缩测量仪RE4416, are robust and accurate to control specimens according to ASTM C151, ASTM C490, BS 1881, EN 1367-4, EN 12617-4, NF P15-433 and NF P18-427 norms.混凝土收缩测量仪SpecificationsMeasurement of dimensional variation of mortar or concrete specimens of 16 cm (混凝土收缩测量仪RE4416) or from 10 to 40 cm (混凝土收缩测量仪RE101040)Repeatability: 0.15 μmLinearity: 0.5% of full measurement scaleThermal variation coefficient: 0.01% of full measurement scale per °CHigh precision digital displayRS 232C interface for computer controlDimensions: 250 x 250 x 600 mmWeight: 35 kgStuds and INVAR calibration bars are also available.
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