一、產(chǎn)品簡(jiǎn)介：
水泥漿豎向膨脹率測定儀用于測定漿液的補償收縮性能，定量測定漿液材料的豎向膨脹量。
First, the cement slurry vertical expansion ratio tester is used to determine the compensation shrinkage performance of the slurry, and quantitatively determine the vertical expansion of the slurry material.
二、主要參數：
★試模尺寸：￠100*100mm
★試模材質(zhì)：金屬
★百分表量程：0-10mm，精度0.01mm
Second, the main parameters of cement slurry vertical expansion rate tester:
★ Test mold size: ￠ 100 * 100mm
★ Test mold material: metal
★ Dial indicator range: 0-10mm, accuracy 0.01mm
三、操作步驟：
★從測定初始讀數起，每隔2h 澆水1 次。連續澆水4 次。以后每隔4h 澆水1 次。保濕養護至要求齡期，測定3d、7d 試件高度讀數。
★從測量初始讀數開(kāi)始，測量裝置和試件應保持靜止不動(dòng)，并不受振動(dòng)。
★灌漿料用水量按流動(dòng)度為250±10nirn 的用水量。
★灌漿料加水攪拌均勻后立即灌模。從玻璃板的一側灌入。當灌到50mm左右高度時(shí)，用搗板在試模的每一側插搗6 次，中間部位也插搗6 次。灌到90mm高度時(shí)，和前面相同再做插搗，盡量排出氣體。后一層灌漿料要一次灌至兩側流出灌漿料為止。要盡量減少灌漿料對玻璃板產(chǎn)生的向上沖浮作用。
★玻璃板兩側灌漿料表面，用小刀輕輕抹成斜坡，斜坡的高邊與玻璃相平。斜坡的低邊與試模內側頂面相平。抹斜坡的時(shí)間不應超過(guò)30s。成型溫度、養護溫度均為（20±3）℃。
★做完斜坡，把百分表測量頭垂放在玻璃板上，在30s 內記錄百分表讀數。為初始讀數。
★測定初始讀數后30s 內，玻璃板兩側灌漿料表面蓋上二層濕棉布。
★豎向膨脹率計算：
式中——豎向膨脹率；t ε
h0 ——試件高度的初始讀數（mm）；
ht ——試件齡期為t 時(shí)的高度讀數（mm）；
h ——試件基準高度100（mm）。
試驗結果取一組三個(gè)試件的算術(shù)平均值，計算**至10-2。
Third, the operation steps of the cement slurry vertical expansion ratio tester:
★ Watering is performed every 2h from the initial reading of the measurement. Continuous watering 4 times. After that, water every 4h. Moisturize and maintain to the required age, and measure the height readings of 3d and 7d specimens.
★ From the initial reading of the measurement, the measuring device and test piece should be kept still and not subject to vibration.
★ The water consumption of the grout is based on the water consumption of 250 ± 10nirn.
★ Fill the mold with water and stir evenly. Fill from one side of the glass plate. When pouring to a height of about 50mm, use a tamping board to insert 6 times on each side of the test mold, and also insert 6 times in the middle. When pouring to a height of 90mm, do the same as before, and try to exhaust the gas. The next layer of grout should be filled at one time until the grout flows out from both sides. It is necessary to minimize the upward flushing effect of the grout on the glass plate.
★ Fill the surface of the slurry on both sides of the glass plate with a knife and gently wipe it into a slope. The lower edge of the ramp is flush with the top surface on the inside of the test pattern. The time for wiping the slope should not exceed 30s. The molding temperature and curing temperature are both (20 ± 3) ℃.
★ After finishing the slope, lay the measuring head of the dial indicator on the glass plate, and record the dial indicator reading within 30s. Is the initial reading.
★ Within 30s of the initial reading, cover the two sides of the glass plate with two layers of wet cotton on the surface of the grout.
★ Calculation of vertical expansion rate:
Where-vertical expansion rate; t ε
h0-initial reading of test piece height (mm);
ht —— height reading (mm) when the age of the test piece is t;
h ——The reference height of the test piece is 100 (mm).
The test results are taken as the arithmetic mean of a set of three test pieces and calculated from ** to 10-2.
四、儀器組成：
★數顯百分表1只
★百分表支架1個(gè)
★圓柱體試模1個(gè)
★立桿：1根
★玻璃板1塊
★百分表讀數調0，記錄初讀數L0
★記錄24h終讀數L1
Fourth, SPZ-100 cement slurry vertical expansion rate instrument composition:
★ One digital dial indicator
★ One dial stand
★ 1 cylindrical test mold
★ Stand: 1
★ 1 glass plate
★ The dial indicator reading is adjusted to 0, and the initial reading L0 is recorded.
★ Record 24h final reading L1
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