北京伯英科技有限公司
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北京伯英科技有限公司
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所 在 地北京市
紡織服裝機械網(wǎng)采購部電話(huà)：0571-88918531
QQ:2568841715
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更新時(shí)間：2024-08-14 09:26:33瀏覽次數：82次
聯(lián)系我時(shí)，請告知來(lái)自 紡織服裝機械網(wǎng)混凝土收縮測量?jì)x ShrinkagemeasurementofconcreteandmortarnormalizedprismsDescription-PrincipleConcretedryingshrinkagecanbemeasuredinlaboratory
混凝土收縮測量?jì)x
Concrete 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 混凝土收縮測量?jì)xRE101040 and 混凝土收縮測量?jì)xRE4416, 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.
Measurement of dimensional variation of mortar or concrete specimens of 16 cm (混凝土收縮測量?jì)xRE4416) or from 10 to 40 cm (混凝土收縮測量?jì)xRE101040)
Repeatability: < 0.15 µm
Linearity: 0.5% of full measurement scale
Thermal variation coefficient: < 0.01% of full measurement scale per °C
High precision digital display
RS 232C interface for computer control
Dimensions: 250 x 250 x 600 mm
Weight: 35 kg
Studs ａnd INVAR calibration bars are also available.
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