巖石膨脹壓力試驗儀概述：
該儀器為數字顯示，手動轉動絲杠施加壓力，適用于各類巖石膨脹性試驗中的體積不變條件下的膨脹壓力試驗，配有透水板，千分表等試驗裝置。
Rock Expansion Pressure Tester Overview:
The instrument is a digital display, and the pressure is manually applied to the screw. It is suitable for the expansion pressure test under the constant volume condition in various rock expansion tests. It is equipped with a test device such as a water permeable plate and a dial gauge.
巖石膨脹壓力試驗儀技術參數：
■大試驗力：40KN
■精 度：優(yōu)于1級
■壓縮空間：170mm
■立柱間距：165mm
■玻璃鋼環(huán)直徑：141mm
■玻璃剛環(huán)高度：66mm
■金屬環(huán)直徑：50mm
■金屬環(huán)高度：55mm
■主機外形尺寸：320*320*500mm
Rock expansion pressure tester technical parameters:
■ Large test force: 40KN
■ Accuracy: better than level 1
■Compression space: 170mm
■Pitch spacing: 165mm
■Glass steel ring diameter: 141mm
■Glass ring height: 66mm
■Metal ring diameter: 50mm
■ Metal ring height: 55mm
■Mainframe dimensions: 320*320*500mm
巖石膨脹壓力試驗儀試驗步驟：
■將試件放人內壁涂有凡士林的金屬套環(huán)內，在試件上下分別放置薄型濾紙和金屬透水板。
■安裝加壓系統(tǒng)及量測試件變形的測表。
■應使儀器各部位和試件在同一軸線上，不得出現(xiàn)偏心荷載。
■對試件施加產生O.O1MPa壓力的荷載，測讀試件變形測表讀數，每隔l0min讀數1次，直至3次讀數不變。
■加的荷載，應保持試件高度在整個試驗過程始終不變。
■開始時每隔10min讀數1次，連續(xù)3次讀數差小于0.001mm時，改為每1h讀數1次
■浸水后總試驗時間不得少于48h.
■試驗過程中，應保持水位不變。水溫變化不得大于2℃
■試驗結束后，應描述試件表面的泥化和軟化現(xiàn)象。
Rock expansion pressure tester test steps:
■ Place the test piece on the inner wall of the metal collar of Vaseline, and place thin filter paper and metal permeable plate on top of the test piece.
■Installation of the pressure system and the measurement of the deformation of the test piece.
■ The parts of the instrument and the test piece should be on the same axis, and no eccentric load should occur.
■ Apply a load of O.O1MPa pressure to the test piece, read the deformation table reading of the test piece, and read it every l0min until the reading is unchanged.
■ For the applied load, the height of the test piece should be kept constant throughout the test.
■Read every 10 minutes at the beginning, and change the readings every 1h to 1 time for 3 consecutive readings.
■ The total test time after water immersion shall not be less than 48h.
■ The water level should be kept constant during the test. Water temperature change must not exceed 2 °C
■ After the test, the muddy and softened surface of the test piece should be described.
巖石膨脹壓力試驗儀試驗記錄：
膨脹性試驗記錄應包括巖石名稱、試驗編號、試件編號、試件描述、試件尺寸、溫度、試驗時間、軸向變形、徑向變形和軸向荷載。
Rock expansion pressure tester test record:
The expansive test record shall include the rock name, test number, test piece number, test piece description, test piece size, temperature, test time, axial deformation, radial deformation and axial load.
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