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SPZ-100水泥浆竖向膨胀率测定仪,水泥浆竖向膨胀率,水泥竖向膨胀率测定仪

水泥浆竖向膨胀率测定仪用于测定浆液的补偿收缩性能,定量测定浆液材料的竖向膨胀量。

  • 型号: SPZ-100

  • 产品参数
  • 型号: SPZ-100



 

一,水泥浆竖向膨胀率测定仪用于测定浆液的补偿收缩性能,定量测定浆液材料的竖向膨胀量。

二,水泥浆竖向膨胀率测定仪主要参数:

1、试模尺寸:¢100*100mm

2、试模材质:金属

3、百分表量程:0-10mm,精度0.01mm

The main parameters of the cement slurry vertical expansion rate tester:
1. Test die size: ¢100*100mm
2, test material: metal
3, the dial gauge range: 0-10mm, accuracy 0.01mm

三,水泥浆竖向膨胀率测定仪操作步骤:
★从测定初始读数起,每隔2h 浇水1 次。连续浇水4 次。以后每隔4h 浇水1 次。保湿养护至要求龄期,测定3d、7d 试件高度读数。
★从测量初始读数开始,测量装置和试件应保持静止不动,并不受振动。
★灌浆料用水量按流动度为250±10nirn 的用水量。
★灌浆料加水搅拌均匀后立即灌模。从玻璃板的一侧灌入。当灌到50mm左右高度时,用捣板在试模的每一侧插捣6 次,中间部位也插捣6 次。灌到90mm高度时,和前面相同再做插捣,尽量排出气体。后一层灌浆料要一次灌至两侧流出灌浆料为止。要尽量减少灌浆料对玻璃板产生的向上冲浮作用。
★玻璃板两侧灌浆料表面,用小刀轻轻抹成斜坡,斜坡的高边与玻璃相平。斜坡的低边与试模内侧顶面相平。抹斜坡的时间不应超过30s。成型温度、养护温度均为(20±3)℃。
★做完斜坡,把百分表测量头垂放在玻璃板上,在30s 内记录百分表读数。为初始读数。
★测定初始读数后30s 内,玻璃板两侧灌浆料表面盖上二层湿棉布。

★竖向膨胀率计算:  
式中——竖向膨胀率;t ε
h0 ——试件高度的初始读数(mm);
ht ——试件龄期为t 时的高度读数(mm);
h ——试件基准高度100(mm)。
试验结果取一组三个试件的算术平均值,计算精确至10-2。

Cement slurry vertical expansion rate measuring instrument operation steps:
 Water the water every 2 hours from the initial reading. Watering 4 times in succession. Watering once every 4 hours. Moisturizing and curing to the required age, measuring the height readings of the 3d and 7d specimens.
 Starting from the measurement of the initial reading, the measuring device and the test piece should remain stationary and free from vibration.
 The water consumption of the grout is based on the water consumption of 250±10nirn.
 Fill the mold immediately after mixing the slurry with water. Fill in from one side of the glass plate. When filling to a height of about 50 mm, the raft is inserted 6 times on each side of the test piece, and the middle part is also inserted 6 times. When filling the height of 90mm, do the same as before, and try to discharge the gas. The latter layer of grout should be poured once to the sides to flow out the grout. It is necessary to minimize the upward flushing effect of the grout on the glass plate.  The surface of the glass plate is filled with slurry, and gently smeared with a knife to form a slope. The high side of the slope is level with the glass. The lower side of the slope is level with the inner top surface of the test mold. The time to wipe the slope should not exceed 30s. The molding temperature and curing temperature were both (20 ± 3) °C.
 After completing the slope, place the dial indicator on the glass plate and record the dial gauge reading within 30 seconds. For the initial reading.
 Within 30s after the initial reading is taken, the surface of the grout on both sides of the glass plate is covered with two layers of wet cotton cloth.
 Vertical expansion rate calculation:
Where - vertical expansion ratio; t ε
H0 - the initial reading of the height of the test piece (mm);
Ht - the height reading (mm) of the test piece at t;
h ——The reference height of the test piece is 100 (mm).
The test results take the arithmetic mean of a set of three test pieces, and the calculation is accurate to 10-2.

四、SPZ-100水泥浆竖向膨胀率测定仪仪器组成:

1、数显百分表1只

2、百分表支架1个

3、圆柱体试模1个

4、立杆:1根

5、玻璃板1块

6、百分表读数调0,记录初读数L0

7、记录24h终读数L1

 


SPZ-100水泥浆竖向膨胀率测定仪,水泥浆竖向膨胀率,水泥竖向膨胀率测定仪

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