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自由膨胀率试验仪

该仪器是岩石试件在浸水后产生的径向和轴向变形分别与试件直径和高度之比,以百分数表示。该试验仪器为千分表数字直读式结构,适用于各类岩石膨胀性试验中的侧向约束情况下,轴向位移变化的试验,配有透水板,千分表等试验装置。

  • 型号:YZP-1

  • 产品参数
  • 型号:YZP-1


 

自由膨胀率试验仪概述:

该仪器是岩石试件在浸水后产生的径向和轴向变形分别与试件直径和高度之比,以百分数表示。该试验仪器为千分表数字直读式结构,适用于各类岩石膨胀性试验中的侧向约束情况下,轴向位移变化的试验,配有透水板,千分表等试验装置。

YZP-1 rock free expansion rate tester overview:
The instrument is the ratio of the radial and axial deformation of the rock specimen after immersion to the diameter and height of the specimen, expressed as a percentage. The test instrument is a dial gauge digital direct reading structure, which is suitable for the test of axial displacement change under the lateral restraint condition of various rock swelling tests, and is equipped with a test device such as a water permeable plate and a dial gauge.

 

自由膨胀率试验仪技术参数:

千分表量程:1mm

精度:0.001mm

玻璃槽长*宽:95*95mm

玻璃槽高度:85mm

透水板:φ50mm/50*50mm

设计试块尺寸:φ50*20mm/50*50mm

主机外形尺寸:200mm×100mm×195mm

YZP-1 rock free expansion rate tester technical parameters:
★ Dial gauge range: 1mm
★ Accuracy: 0.001mm
★ glass slot length * width: 95 * 95mm
★Glass tank height: 85mm
★ permeable plate: φ50mm/50*50mm
★Design test block size: φ50*20mm/50*50mm
★ Mainframe dimensions: 200mm × 100mm × 195mm

 

自由膨胀率试验仪试验步骤:

将试件放人自由膨胀率试验仪内,在试件上下分别放置透水板,顶部放置一块金属板。

在试件上部和四侧对称的中心部位分别安装千分表。四侧千分表与试件接触处,宜放置一块薄铜片。

读记千分表读数,每10min读记1次,直至3次读数不变。

缓慢地向盛水容器内注人洁净水,直至淹没上部透水板。

在第1小时内,每隔l0min测读变形1次,以后每隔1h测读变形1次,直至3次读数差不大于0.001mm为止。浸水后试验时间不得小于48h。

试验过程中,应保持水位不变,水温变化不得大于2℃

试验过程中及试验结束后,应详细描述试件的崩解、掉块、表面泥化或软化等现象。

YZP-1 rock free expansion rate tester test steps:
★ Put the test piece into the free expansion rate tester, place the water-permeable plate on the top and bottom of the test piece, and place a metal plate on the top.
★ Install the dial gauge on the upper part of the test piece and the center part of the four sides symmetrically. A thin piece of copper should be placed in contact with the test piece on the four side dial gauge.
★ Read the dial gauge readings and read them every 10 minutes until the 3 readings are unchanged.
★ Slowly inject clean water into the water container until the upper permeable plate is submerged.
★In the first hour, the deformation is measured once every 10 minutes, and then the deformation is read once every 1 hour until the difference of 3 readings is not more than 0.001 mm. The test time after immersion shall not be less than 48 hours.
★ During the test, the water level should be kept unchanged, and the water temperature change should not exceed 2 °C.
★ During the test and after the test, the disintegration, falling off, surface muddy or softening of the test piece shall be described in detail.

 

自由膨胀率试验仪膨胀率计算:

按下列公式分别计算岩石自由膨胀率、侧向约束膨胀率、膨胀压力

VH=△H/H *100

VD=△D/D *100

VHP=△H1/H *100

PS=F/A

式中:

VH——岩石轴向自由膨胀率(%)

VD——岩石径向自由膨胀率(%)

VHP——岩石侧向约束膨胀率(%)

Ps——岩石膨胀压力(MPa)

△H——试件轴向变形值(mm)

H——试件高度mm

△D——试件径向平均变形值(mm)

D——试件直径或边长(mm)

△H1——有侧向约束试件的轴向变形值(mm)

F——轴向荷载(N)

A——试件截面积(mm2)

岩石轴向自由膨胀率、径向自由膨胀率、侧向约束膨胀率试验结果精确至0.1%,

 

自由膨胀率试验仪结果精确至0.001MPa.

YZP-1 rock free expansion rate tester expansion rate calculation:
Calculate the rock's free expansion rate, lateral restraint expansion rate, and expansion pressure according to the following formula
VH=△H/H *100
VD=△D/D *100
VHP=△H1/H *100
PS=F/A
In the formula:
VH——axial free expansion rate of rock (%)
VD - radial free expansion rate of rock (%)
VHP - rock lateral restraint expansion rate (%)
Ps - rock expansion pressure (MPa)
△H——axial deformation value of the test piece (mm)
H——test piece height mm
△D——The radial average deformation value of the test piece (mm)
D——test piece diameter or side length (mm)
△H1——axial deformation value of the laterally constrained test piece (mm)
F——axial load (N)
A——cross-sectional area of the test piece (mm2)
The experimental results of axial free expansion rate, radial free expansion rate and lateral restraint expansion rate of the rock are accurate to 0.1%.
The rock expansion pressure test results are accurate to 0.001 MPa.

 

自由膨胀率试验仪试验记录:

膨胀性试验记录应包括岩石名称、试验编号、试件编号、试件描述、试件尺寸、温度、试验时间、轴向变形、径向变形和轴向荷载。

YZP-1 rock free expansion rate 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.

 

 


自由膨胀率试验仪

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