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Bubble mixed light clay and method for preparing the same

A production method and light soil technology, which is applied in the field of air bubble mixed light soil, can solve the problems of increased construction cost, large volume of fly ash soil, high cost, etc., and achieve the effects of uniform filling, easy construction of filling soil, and high fluidity

Inactive Publication Date: 2003-06-11
GUANGDONG GUANYUE HIGHWAY & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to shorten the construction period and reduce post-construction settlement, the overload preloading method is often used, but this method not only increases the construction cost, but also cannot fundamentally eliminate the occurrence of post-construction settlement; in addition, fly ash is also used to build railway subgrades. However, because the bulk density of fly ash soil is still relatively large, it cannot be used as an auxiliary method for soft foundation treatment; there are also some plastic particles mixed with soil. At the bridgehead of a highway in Jiangsu, light wall brick factory scraps were used as There have also been examples of applying ultra-light material EPS to bridgehead filling, but EPS is an expensive chemical material, which is not only expensive, but also needs to be processed for filling EPS. construction waste soil, and the bulk density of this material (0.016~0.03t / m 3 ) is too small, we must consider the stability problems caused by the buoyancy of water, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Take 400Kg of sandy soil from which debris such as large stones and bricks have been removed;

[0033] 2. Take 300Kg of pozzolan cement and 270Kg of mixed water, pour the three components into the mixer and mix them evenly; the pozzolan cement mainly plays the role of consolidation and strengthening the skeleton of the soil, and the same amount of ordinary silicate can also be used for pozzolan cement Cement or blast furnace Portland cement, etc., after these materials are added to the soil, water will react with water to produce Ca(OH) 2 Product, Ca(OH) 2 Ion exchange with clay particles to form a solidified product, to achieve the role of strengthening the skeleton of the soil. In addition, a curing auxiliary agent for the purpose of catalysis and early setting is added to the above cement. The curing auxiliary agent is fly ash, gypsum powder or silicon powder, etc. The purpose of adding these materials is also to reduce the amount of cement. Add 50Kg of fly ash ...

Embodiment 2

[0036] Directly take 550Kg of ordinary Portland cement and 400Kg of mixed water and pour them into the blender to stir and mix evenly; add 50Kg of air bubbles to the mixture and let the air bubbles evenly distribute in the mixture by stirring to obtain air bubbles that can be used for pouring immediately Mix in light soil. In a dry state, the pore volume formed by air bubbles in the light soil mixed with air bubbles in this embodiment accounts for about 65% of the total volume.

Embodiment 3

[0038] Take 660Kg of sandy soil, 120Kg of blast furnace Portland cement, and 210Kg of mixed water, pour the three components into the mixer and mix them evenly; then add 10Kg of air bubbles to the mixture and let the air bubbles evenly distribute in the mixture by stirring In the process, air-mixed light soil that can be used for pouring immediately is obtained. In a dry state, the volume of pores formed by air bubbles in the light soil mixed with air bubbles in this embodiment accounts for about 40% of the total volume.

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Abstract

The invention discloses a bubble mixing light earth and the making method, the weight percentage of its components; cement 12-55%, arenaceous earth 0-66%, mixed water 21-40% and bubble 1-5%; making mixing and stirring ont he above three components and the pre-made bubble to get it.

Description

Technical field [0001] The invention relates to an air-bubble mixed light soil used in the fields of highway engineering, tunnel engineering, bridge engineering and the like, and also relates to a preparation method of the air-bubble mixed light soil. Background technique [0002] At present, various drainage consolidation methods (including overload preloading method, vacuum preloading method, and heap preloading method) are basically used in the treatment of soft foundations of expressways in China to promote settlement and improve the bearing capacity of soft foundations. For the deep and thick soft foundation distributed in the Pearl River Delta and the Yangtze River Delta, methods such as construction of plastic drainage boards, bagged manholes, and then preloading can be used; these methods can basically control the main consolidation settlement within the construction period. Due to the soft clay Creep properties cause sub-consolidation settlement. Although this settl...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B35/00C04B38/10
Inventor 陈忠平邓江王树林邓万福罗继前肖礼经陈伟峰周江平
Owner GUANGDONG GUANYUE HIGHWAY & BRIDGE
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