Unlock instant, AI-driven research and patent intelligence for your innovation.

Layered sampling device and method for detecting corrosive ion concentration in cement-based material

A technology of cement-based material and ion concentration, applied in sampling device, measuring device, sampling and other directions, can solve the problems of data difficulty and inability to carry out grinding powder sampling, etc.

Pending Publication Date: 2022-01-25
HUBEI UNIV OF ARTS & SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual process, due to factors such as the experimental site, it is generally necessary to reduce the size of the concrete, and the profile grinder cannot perform grinding sampling when faced with small concrete and mortar test blocks, so that various corrosion samples can be collected in the experiment. data becomes difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Layered sampling device and method for detecting corrosive ion concentration in cement-based material
  • Layered sampling device and method for detecting corrosive ion concentration in cement-based material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A layered sampling device for detecting the concentration of erosive ions in cement-based materials, including a screening device and a sub-packaging sampling device, the screening device is arranged above the sub-packaging sampling device; the screening device and sub-packaging sampling device The exterior is provided with a shell, and the screening device includes a standard sieve 2 and a feed inlet 5; the feed inlet 5 is arranged above the standard sieve 2, and the standard sieve 2 is an 80 μm square hole sieve that meets national standards; the The standard sieve 2 is fixed on the fixture 7 with screws 6, and the standard sieve 2 is connected with the sampling device shell 1 through the spring 8. After the standard sieve 2 is clamped by the fixture, the spring 8 is connected, and the square hole is made by pulling the spring outside. The sieve reciprocates in the horizontal direction to sieve the cement-based material particles. The subpackaging sampling device incl...

Embodiment 2

[0036] 450g of ordinary Portland cement with a mix ratio of PO42.5, 1350g of ISO standard sand, and 225g of water are used for mixing with a cement mortar mixer, and poured in a mold of 40mm×40mm×160mm, and after standard curing for 28 days , placed in a mass concentration of 5% (NH 4 ) 2 SO 4After soaking in the solution for 360 days, the cement mortar is cut into small sections, and a part of them is ground by a common lathe. After the cement mortar test block is clamped by a common lathe, the grinding depth is 0.5mm, and the speed is 20r / min. The device of the present invention is placed on the lower part of the lathe, and the lathe is turned on. , through the reciprocating operation of the spring, the powder is sieved and flows into the sample hopper 4 through the funnel 3 . After reaching the grinding depth, turn the handle 11 and make the funnel mouth align with the next sample bucket 4 through the observation window 12 . Continue to set the grinding depth to 1mm, ad...

Embodiment 3

[0038] Use PO42.5 ordinary Portland cement 450g, ISO standard sand 1350g, water 225g mix ratio to make cement mortar standard test blocks according to national standards and carry out standard maintenance. Soak the cured samples in 10% Na 2 SO 4 After reaching 180 days in the solution, take it out, and use a common lathe to clamp the cement mortar test block. By setting the grinding depth to 0.5mm, the speed is 20r / min. The device of the present invention is placed on the lower part of the lathe, and the powder ground by the lathe enters the standard sieve 2 through the feed port 5, and the spring handle is manually reciprocated to make the ground powder pass through the standard sieve and flow into the sample hopper 4. After reaching the set grinding depth, observe through the observation window 12 and slowly rotate the handle 11 to align the funnel mouth with the empty sample hopper 4 . Continue to set the grinding depth of the lathe to 0.5 mm, and advance at a speed of 2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of building materials, and relates to a method for layer-by-layer accurate sampling of a cement-based material test block through a lathe when the cement-based material test block is eroded by ions. The method comprises the following steps: grinding a cement-based material test block layer by layer from the surface layer to the inside by using a center lathe, collecting samples ground layer by layer by using a special device, then detecting by using a chemical analysis method, and measuring the content of ions in mortar powder of each layer. The method has the advantages that a cement-based material sample with a smaller size can be subjected to layered accurate grinding and sampling; the ground and sampled powder is sieved; and continuous sampling can be carried out.

Description

technical field [0001] The invention relates to a sampling device and method for detecting cement-based materials when they are eroded by certain chemical ions, and belongs to the technical field of building materials. Background technique [0002] Cement-based materials will face complex chemical environments after construction and service, such as acid rain, groundwater, sea breeze, etc. When harmful ions in these environments enter the cement-based materials, the performance of the cement-based materials will be weakened gradually. To monitor the chemical changes of cement-based materials at different depths during curing. The current sampling method of cement concrete mainly adopts profile grinder for powder grinding. This profile grinder cuts circular areas with a diameter of 73mm and a depth of cut of up to 40mm when cutting concrete. There are limitations for smaller concrete specimens and those requiring deeper sampling. In the actual process, due to factors such ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N1/04G01N1/28
CPCG01N1/04G01N1/286
Inventor 王学兵郭声波全峰丁晓娅戴高鹏
Owner HUBEI UNIV OF ARTS & SCI