混合料收縮系數試驗儀是依據《公路工程瀝青及瀝青混合料試驗規(guī)程JTJ052-2000》中T0720-1993，采用現代傳感器技術、自動控制技術、制冷技術開發(fā)的，主要用于測試瀝青混合料試件在規(guī)定的時間和溫度下的線收縮情況，
The mixture shrinkage coefficient tester was developed in accordance with T0720-1993 in the Highway Engineering Asphalt and Asphalt Mixture Test Procedure JTJ052-2000, using modern sensor technology, automatic control technology, and refrigeration technology. The linear shrinkage at the specified time and temperature,
混合料收縮系數試驗儀主要特點：
本款儀器結構緊湊、式樣美觀，可利用微機進行整個過程的全自動測試。
Main characteristics of mixture shrinkage coefficient tester:
This instrument is compact in structure and beautiful in appearance. It can use a microcomputer to perform a fully automatic test of the entire process.
混合料收縮系數試驗儀適用范圍
本方法適用于測定瀝青混合料的線收縮系數。 同時也用于從輪碾成型的板塊狀試件上切制的棱柱體試件，試件尺寸為長200mm±2.0mm，寬20mm±1.0mm,高20mm±1.0mm，溫度區(qū)間及降溫速率根據當地氣候條件決定，通常采用的溫度區(qū)間為＋10℃~-20℃，降溫速率為5℃/h。
Application scope of mixture shrinkage coefficient tester
This method is suitable for determining the linear shrinkage coefficient of asphalt mixtures. At the same time, it is also used for the prism test piece cut from the plate-shaped test piece formed by wheel milling. The size of the test piece is 200mm ± 2.0mm long, 20mm ± 1.0mm wide, and 20mm ± 1.0mm high. The local climatic conditions determine that the temperature range usually used is + 10 ℃ ~ -20 ℃, and the cooling rate is 5 ℃ / h.
混合料收縮系數試驗儀技術指標：
★容柵式數字千分位移傳感器：行程0mm～10mm，分辨率0.001mm
★控溫分辨率為0.1℃，控溫范圍-30℃～室溫；溫度下降速度為5℃/h ±1℃/h
★控制儀表上有20×4字符式液晶顯示器，并有RS232C串口
★電源：220V×50Hz
★外形尺寸:700×300×1000mm。
★環(huán)境溫度：≤35℃。
★相對濕度：≤85%。
★整機功耗： 2KW。
★儀器凈重： 100kg
★電源電壓：220v
Technical index of mixture shrinkage coefficient tester:
★ Grating type digital micro-displacement sensor: Stroke 0mm ～ 10mm, resolution 0.001mm
★ Temperature control resolution is 0.1 ℃, temperature control range is -30 ℃ ～ room temperature; temperature drop rate is 5 ℃ / h ± 1 ℃ / h
★ 20 × 4 character LCD display on the control instrument, and RS232C serial port
★ Power supply: 220V × 50Hz
★ Dimensions: 700 × 300 × 1000mm.
★ Ambient temperature: ≤35 ℃.
★ Relative humidity: ≤85%.
★ Whole machine power consumption: 2KW.
★ Net weight of the instrument: 100kg
★ Power supply voltage: 220v
混合料收縮系數試驗儀儀器材料與配置:
★收縮儀：殷鋼制，一端為球形側頭，另一端裝置千分表或位移計，也可采用能快速準確測定變形的其他儀器。
★高低溫循環(huán)恒溫水槽：裝有自動溫度控制器，控溫準確度為0.1℃，降溫速率控制準確度為1℃/h。內部尺寸不小于長30cm、寬20cm及深15cm。
★金屬測頭：長約15mm，直徑約5mm，接在試件一端的端部為半球形，接在試件另一端的端部為平面。
★冷媒：1:1甲醇水溶液或防凍液。
★溫度計：分度為0.1℃。
★卡尺：量程250mm。
★其他：天平、鐵盤、玻璃板、502粘結劑等。
Material and Configuration of Mixture Shrinkage Coefficient Tester
★ Shrink meter: made of Yin steel, one end is spherical side head, the other end is equipped with dial indicator or displacement meter, and other instruments can be used to quickly and accurately measure deformation.
★ High and low temperature circulating constant temperature water tank: equipped with automatic temperature controller, temperature control accuracy is 0.1 ℃, temperature control accuracy is 1 ℃ / h. The internal dimensions are not less than 30cm in length, 20cm in width and 15cm in depth.
★ Metal probe: about 15mm in length and about 5mm in diameter. The end connected to one end of the test piece is hemispherical, and the end connected to the other end of the test piece is flat.
★ Refrigerant: 1: 1 methanol solution or antifreeze.
★ Thermometer: The division is 0.1 ℃.
★ Caliper: 250mm range.
★ Others: balance, iron plate, glass plate, 502 adhesive, etc.
