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Simple compactness self-detection method

A compact and simple technology, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc., and can solve the problem of lack of preliminary detection methods for compaction.

Inactive Publication Date: 2020-10-23
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simple compactness self-test method to solve the problem that the compactness lacks a more accurate, fast and convenient preliminary detection method than relying on naked eyes and experience

Method used

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Examples

Experimental program
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Embodiment

[0031] In the construction section of a subgrade construction project, before submitting to the laboratory for compaction testing, a total of 42 batches of soil samples were submitted based on experience and judgment according to the sand filling method. In the end, 5 batches of soil samples exceeded 10% and failed to pass the test. , re-sampled and waited for the second test, and the construction work stagnated;

[0032] For another construction section of the same subgrade construction project mentioned above, soil samples were taken before the construction started, and sent to the laboratory to obtain the optimum moisture content of 10.6% and maximum dry density of 1.861g / cm by compaction method 3 , by the formula Calculate and get k=0.485, then the formula can be simplified as In order to reduce the error and facilitate the calculation, the hole should be dug into a cube of 10cm×10cm×10cm as far as possible, and the volume of the hole is calculated as 1000cm 3 , the fo...

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PUM

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Abstract

The invention discloses a simple compactness self-detection method, and relates to the technical field of highway subgrade compactness detection. The simple compactness self-detection method aims to solve the problem that there is a lack of a primary compactness detection means that is more accurate, more rapid and more convenient than judgment by naked eyes and experience. The simple compactnessself-detection method includes the following specific steps of S1, determining a value k, wherein soil is taken before construction from a site where construction is going to be carried out, an optimal moisture content and a maximum dry density are acquired by a compaction method in a lab, an equation is solved to obtain the value k, and a number at the fourth position after the decimal point of acalculation result is omitted; S2, performing sampling, wherein a pit is dug in compacted dust after construction, and all dug-out dust is collected; S3, performing measurement, wherein the size of the pit is measured, and the mass of the dug-out dust is weighed; and S4, performing calculation, wherein the compactness is calculated by an equation. By means of the method, primary detection is moreaccurate, more rapid and more convenient than judgment by naked eyes and experience, site management personnel can control the construction quality better, construction efficiency can be effectivelyimproved, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of detecting the degree of compaction of a highway subgrade, in particular to a simple method for self-inspecting the degree of compaction. Background technique [0002] The degree of compaction, also known as the degree of compaction, refers to the ratio of the dry density of soil or other building materials after compaction to the standard maximum dry density, and is expressed as a percentage; the degree of compaction is one of the key indicators for the quality inspection of roadbed and pavement construction. It characterizes the density status after on-site compaction. The higher the degree of compaction, the greater the density, and the better the overall performance of the material; The ratio of the dry density to the maximum dry density obtained from the indoor standard compaction experiment. [0003] The quality of the roadbed is the fundamental guarantee for road safety. Strengthening the control o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/08
CPCE02D1/08
Inventor 吴涛张世康
Owner CHINA MCC17 GRP
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