Method for fast measurement and determination of soil cement intensity and mathematical model therefor

A mathematical model and cement-soil technology, applied in the field of mathematical models, can solve the problems of poor cement-soil late strength correlation, long cement-soil strength test period, low cement-soil strength, etc., achieve short test period, fast and convenient measurement speed, and improve The effect of hardened strength

Inactive Publication Date: 2006-11-22
YANCHENG INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the shortcomings of the prior art such as long cement-soil strength test period, low cement-soil strength at the set age, large relative error, and poor correlation with the later-stage strength of cement-soil, etc.

Method used

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  • Method for fast measurement and determination of soil cement intensity and mathematical model therefor
  • Method for fast measurement and determination of soil cement intensity and mathematical model therefor
  • Method for fast measurement and determination of soil cement intensity and mathematical model therefor

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Embodiment Construction

[0033] First of all, establish the mathematical model formula applied to the method of quickly measuring and estimating the strength of cement and soil by using high temperature and high pressure.

[0034] After a large number of tests, it was found that the best autoclave curing time for the sample to be molded in the autoclave is 3 hours. For example, if the standard curing time is designed as 28 days and 90 days, according to this, the specific steps for establishing the mathematical model between the estimated value of the cement-soil standard strength and the measured value of the steam curing strength are as follows:

[0035] (1) Determination of the strength of autoclave curing: make samples of cement, soil and water or cement, admixture, soil and water, put them in an autoclave, and carry out autoclave curing for 3 hours under high temperature and high pressure. , and then take out the sample and use a pressure tester to measure the steam curing strength of the sample ...

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PUM

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Abstract

The disclosed method to fast measure and analyze concrete strength comprises: putting the sample into high-pressure kettle to cure with die and accelerate solidification and hardening strength; using a manometer to obtain the sample strength, then using a pre-set mathematic model to obtain the standard strength value. This invention cuts time, and has high accuracy with small error.

Description

technical field [0001] The invention relates to a quick estimation method of the standard strength of cement and soil of civil construction materials and a mathematical model applied thereto. Specifically, the present invention relates to a method for accelerating the hardening of cement-soil by steam curing, and rapidly measuring the strength of cement-soil, thereby using a pre-established mathematical model formula to accurately and rapidly estimate the standard strength of cement-soil. Background technique [0002] In civil engineering, due to the deep mixing method to strengthen soft ground, less cement consumption, shorter construction period, less vibration and noise, and low cost, it is widely used in construction and road engineering. However, due to the variety of foundation soil types and different chemical compositions, especially the type and content of organic matter have a great influence on the strength of cement-soil, it is difficult to guarantee the quality ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N1/28G01N33/38
Inventor 李玉寿郝子进焦宝祥
Owner YANCHENG INST OF TECH
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