A Method for Measuring Sand Fineness Modulus Using Image Analysis Technology

A fineness modulus, image analysis technology, applied in the field of civil engineering materials research and application, can solve the problems of high labor intensity, low efficiency, errors, etc., and achieve the effect of high degree of automation, accurate data, and improved efficiency

Inactive Publication Date: 2017-09-05
QINGDAO TECHNOLOGICAL UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above calculation method not only requires specific related equipment, but also has high labor intensity and low efficiency. Due to the need for repeated weighing and human judgment that the sample throughput per minute is less than 0.1% of the total sample volume, it is easy to cause certain error

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
  • A Method for Measuring Sand Fineness Modulus Using Image Analysis Technology
  • A Method for Measuring Sand Fineness Modulus Using Image Analysis Technology
  • A Method for Measuring Sand Fineness Modulus Using Image Analysis Technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] The fineness modulus measuring method of the sand that the present embodiment relates to specifically comprises the following steps:

[0051] (1) Sampling: According to the sampling regulations in "Sand for Construction" (GB / T 14684-2011), the sand for calculating the fineness modulus should be sampled through sieve screening. In the actual screening process, as long as the sand grain width The size of the direction is smaller than the diagonal size of the sieve hole, and the sand particles can pass through the sieve hole from the diagonal direction of the sieve hole (such as figure 2 shown), so the nominal particle diameters of sand particles corresponding to sieve holes 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm and 0.15mm are 10mm, 5.00mm, 2.50mm, 1.25mm, 0.63mm, 0.315 mm and 0.16mm; sand samples with a nominal particle size in the range of 0.16mm-10mm were obtained by sampling and divided into 800ml, then dried in a drying oven to constant weight, and divided into...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of research and application of civil engineering materials, and relates to a method for measuring sand fineness modulus using image analysis technology, which specifically includes sampling, photographing, image preprocessing, calibration scale, separating sand grains from the background, and correcting adhesion. There are 11 steps including segmentation of sand particles, processing of sand particles on the image boundary, processing of sand particles with holes, determination of the minimum Feret diameter, filtering of sand particle size, and calculation of sand fineness modulus; The analytical method is used to calculate the fineness modulus of the sand, and the criterion of equal volume ratio and weight ratio is applied, which avoids the weighing process of the sand; the minimum Feret diameter is used as the equivalent particle size of the sand that can be sieved, so as to better ensure The accuracy of the measured data is ensured; the method is novel in design, reliable in principle, easy to operate, scientific in calculation, accurate in data, low in cost and high in automation.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of research and application of civil engineering materials, and in particular relates to a method for measuring the fineness modulus of sand, which accurately measures the fineness modulus and average particle diameter of the sand by means of image analysis and processing technology. [0003] Background technique: [0004] As we all know, concrete is an indispensable material in civil engineering, and the fineness of sand plays an important role in the mix design of concrete. If the fineness of sand changes, the sand rate and water addition should be adjusted accordingly. Adjustment can maintain the workability of concrete. The fineness modulus of sand is an index that characterizes the degree of fineness and type of particle size of natural sand and artificial sand. Although it cannot fully reflect the gradation of particles, as a concise index, it can still be used in a certain The degree reflects ...

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
Patent Type & AuthorityPatents(China)
IPC IPC(8): G01N15/02G01B11/08G06T7/00
Inventor范宏秦雪李鹏
OwnerQINGDAO TECHNOLOGICAL UNIVERSITY