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Air bubble mixed light-weight earth

A lightweight soil and air bubble technology, applied in the fields of soil protection, climate sustainability, sustainable waste treatment, etc., can solve the lack of effective means and measures for the control and inspection of the construction weight of concealed projects, and the inconvenience of traffic and safe pipelines. Due to the safety of force and the difficulty of ordinary filling to meet the engineering requirements, the effect of ensuring anti-sliding stability, shortening the engineering period and low density

Inactive Publication Date: 2006-03-15
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both are easy to cause post-construction settlement of excessively large embankments
However, there is a lack of effective means and measures for the control and inspection of the construction weight as a concealed project
The roadbed on the expressway is sometimes due to the high filling of the embankment or the weak foundation soil, which can easily lead to a large post-construction settlement of the embankment
Therefore, it is still difficult to find an effective solution
[0006] Due to buried pipes, underground cavities and other projects that cannot be rolled and compacted, the construction of ordinary filling soil is difficult to meet the project requirements, such as Figure 5 shown
Due to the high density of ordinary fill, and because it cannot be rolled and compacted during construction, the later settlement is relatively large, which is inconvenient for traffic safety and safety of pipeline stress.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Clay, water, air bubbles, and cement are put into the mixing processor and mixed evenly together to make air bubble mixed lightweight soil. Take 100 kg of mixed material, the weight ratio of each component

[0029] Clay 78%

[0030] 32.5 # Cement 12%

[0031] Bubbles 1%

[0032] water 9%

[0033] Put the above clay, water and cement into the mixing processor and mix and stir to make the raw material soil slurry. Bubbles are obtained by foaming the foaming solution through a foaming device. Put the air bubbles into the mixing processor to mix and stir with the raw material soil slurry to make air bubble mixed lightweight soil slurry. Use a pump to press the air-bubble mixed lightweight soil slurry to the construction work surface for pouring construction to form lightweight fill.

[0034] Cured under the standard conditions of standard atmospheric pressure, temperature 18-20°C and humidity 100%, the wet density of 28 days is 1.02g / cm 3 , Unconfined compressive st...

Embodiment 2

[0036] Silt, water, air bubbles, and cement are put into the mixing processor and mixed evenly together to make air bubble mixed lightweight soil. Take 100 kg of mixed material, the weight ratio of each component

[0037] Silt 84%

[0038] 32.5 # Cement 15%

[0039] Bubbles 1%

[0040] Put the above silt and cement into the mixing processor and mix and stir to make the raw material soil slurry. Bubbles are obtained by foaming the foaming solution through a foaming device. Put the air bubbles into the mixing processor to mix and stir with the raw material soil slurry to make air bubble mixed lightweight soil slurry. Use a pump to press the air-bubble mixed lightweight soil slurry to the construction work surface for pouring construction to form lightweight fill.

[0041] Cured under the standard conditions of standard atmospheric pressure, temperature 18-20°C and humidity 100%, the wet density of 28 days is 1.0g / cm 3 , Unconfined compressive strength 258kPa. It is suita...

Embodiment 3

[0043]Sand, water, air bubbles, and cement are put into the mixing processor and mixed evenly together to make air bubble mixed lightweight soil. Take 100 kg of mixed material, the weight ratio of each component

[0044] Sand 70%

[0045] 32.5 # Cement 20%

[0046] Bubbles 1%

[0047] water 9%

[0048] The above-mentioned sand, water and cement are put into a mixing processor for mixing and stirring to make raw material soil slurry. Bubbles are obtained by foaming the foaming solution through a foaming device. Put the air bubbles into the mixing processor to mix and stir with the raw material soil slurry to make air bubble mixed lightweight soil slurry. Use a pump to press the air-bubble mixed lightweight soil slurry to the construction work surface for pouring construction to form lightweight fill.

[0049] Cured under the standard conditions of standard atmospheric pressure, temperature 18-20°C and humidity 100%, the wet density of 28 days is 0.76g / cm 3 , Unconfined ...

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Abstract

The present invention is light earth filling material for civil and water engineering and its production process. Soil material, curing material, bubble and water are mixed homogeneously to produce the light earth material. The material may be used in solving problems of embankment sedimentation, poor stability of retaining wall, un-densified pipeline groove, etc. The material has small density, high strength, good flowability before curing, simple production process and other advantages. Utilizing building waste soil is favorable to environment protection.

Description

technical field [0001] The invention relates to a kind of air-bubble mixed lightweight soil, which can be used as road construction and expressway widening fill, landslide-prone road construction fill, bridge abutment and retaining wall backfill, underground Air-mixed lightweight soil for backfill in engineering and pipeline works and method for its production. It belongs to the technical field of civil construction materials. Background technique [0002] In urban construction, water conservancy projects, and marine engineering in China, a large amount of engineering waste soil is produced every year. These engineering wastes cannot be directly used as filling materials, and are mostly discarded in low-lying land, fish ponds, cultivated land or marine mud dumping areas in the suburbs of cities, causing considerable environmental pollution and seriously affecting the sustainable development of cities. On the other hand, in my country's urban construction, hydraulic enginee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12C04B38/00C04B38/10C04B28/00
CPCC04B2111/00146C04B28/001Y02W30/91
Inventor 朱伟张志允张春雷张明晶
Owner HOHAI UNIV
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