A lime mixing amount calculation method for lime-improved granite residual soil

A calculation method and granite technology, applied in the field of civil engineering, can solve problems such as water content and high compaction, and achieve the effect of reducing calculation cost, improving accuracy and increasing calculation speed.

Inactive Publication Date: 2022-01-11
HUNAN INSTITUTE OF ENGINEERING
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Problems solved by technology

At present, there is an urgent need to quantitatively study the water consumption of lime hydration, comprehensively consider the heat of hydration and the time effect of hydration, and establish a calculation method that can be used for the proportion of lime mixed with granite residual soil to solve the problem of water content in roadbed improvement. Compaction problems caused by too high a rate

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  • A lime mixing amount calculation method for lime-improved granite residual soil
  • A lime mixing amount calculation method for lime-improved granite residual soil
  • A lime mixing amount calculation method for lime-improved granite residual soil

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The modification mechanism of lime-improved soil: the main component of lime is calcium oxide (CaO), in addition, there are magnesium oxide (MgO) and calcium silicate (2CaO·SiO 2 ), ...

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Abstract

The invention discloses a lime mixing amount calculation method for lime-improved granite residual soil. The method specifically comprises the following steps: mixing quicklime into the granite residual soil to obtain the lime-improved granite residual soil, and calculating total water consumption; and based on the total water consumption and the optimal water content of the lime-improved granite residual soil, calculating the doping amount of quicklime required to be doped into the lime-improved granite residual soil. According to the invention, a large number of tests do not need to be carried out to prepare an appropriate proportion required by a specific project, the verification proportion can be calculated only through quantitative calculation, the calculation cost is greatly reduced, meanwhile, the water consumption is calculated by considering the multi-source problem, the calculation accuracy is improved, the comprehensive influence coefficient is calculated through the BP neural network, and the calculation rate is improved.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a method for calculating the amount of lime mixed in lime-improved granite residual soil. Background technique [0002] High natural water content is one of the main reasons why granite residual soil makes subgrade rolling difficult. Adding lime to granite subgrade filler is an effective way to improve its road performance. The mechanism of improvement generally includes: 1. Lime hydration reaction. The main substances in lime, CaO and MgO, first chemically react with the moisture in the soil to produce Ca(OH) 2 and a small amount of Mg(OH) 2 . In addition to absorbing a part of the water in this chemical reaction, the heat of hydration generated in the reaction process will also cause a large amount of water to evaporate; two, ion exchange in the soil, the product Ca(OH) produced by the reaction of quicklime and water 2 and a small amount of Mg(OH) 2 Dissolve in water and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/15C04B28/12
CPCG06F17/15C04B28/12C04B14/048C04B14/361
Inventor 李盛南梁桥吕正凤汪勤用刘杰王军
Owner HUNAN INSTITUTE OF ENGINEERING
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