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Self-compaction rubber concrete canal lining and preparation method therefor

A rubberized concrete, self-compacting technology, applied in artificial waterways, construction, water conservancy projects, etc., can solve problems such as damage, erosion damage, frost heave damage channels, etc., to reduce accumulation, enhance ductility, and speed up construction progress.

Active Publication Date: 2020-01-17
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional concrete channel linings are often damaged due to external and internal reasons during use.

Method used

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  • Self-compaction rubber concrete canal lining and preparation method therefor
  • Self-compaction rubber concrete canal lining and preparation method therefor
  • Self-compaction rubber concrete canal lining and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation method of the self-compacting concrete channel lining structure of the present embodiment, concrete steps:

[0037] S1: Fix the formwork at the channel lining position and close both sides of the formwork;

[0038] S2: produce self-compacting rubber concrete, and pour the self-compacting rubber concrete whose fluidity meets the requirements into the formwork;

[0039] S3: After the pouring is completed, the self-compacting rubber concrete is humidified and cured, and the formwork is removed after the self-compacting rubber concrete is cured to a certain strength in the formwork;

[0040] S4: Steps S1-S3 are repeated until the construction of the entire channel lining is completed.

[0041] In this embodiment, a water-stop rubber strip is provided between every two adjacent self-compacting rubber concrete channel linings to reduce the leakage loss of the channel.

[0042] In this embodiment, the mass ratio of raw material components in self-compacting r...

Embodiment 2

[0044] Adopt the method identical with embodiment 1, difference is, the mass ratio of raw material component in self-compacting rubber concrete is: cement: fly ash: gravel: sand: rubber aggregate: water: additive is 325:175: 760:780:50:185:7; the additive components in this embodiment include 100 parts by mass of water, 100 parts by mass of water reducer, 0.16 parts by mass of defoamer and 0.3 parts by mass of air-entraining agent.

experiment example 1

[0048]According to the "Hydraulic Concrete Test Regulations" SL 352-2006, the self-compacting rubber concrete prepared in the above examples and comparative examples was tested for flow performance and strength. After testing, the implementation effect is shown in the following table:

[0049] Table 1 Flow performance test

[0050]

[0051] Table 2 Strength Test

[0052]

[0053] From the data in Table 1, it can be seen that in the embodiment of the present invention, the self-compacting rubber concrete has a slump greater than 255mm during the pouring process, a slump expansion of 550-750mm, and a V-shaped funnel time of 7-30s. Vibration, self-compacting rubber concrete will fill the formwork under the action of its own weight. Through the data in Table 2, it can be seen that in the examples of the present invention, the elastic modulus of the self-compacting rubber concrete is 33.0GPa and 29.5GPa respectively, which is lower than the elastic modulus 34GPa of the compa...

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Abstract

The invention relates to a self-compaction rubber concrete canal lining and a preparation method therefor. The self-compaction rubber concrete canal lining comprises a canal lining main body, whereinthe canal lining main body is prepared from self-compaction rubber concrete. The lining material provided by the invention can be used for effectively improving high brittleness and low compliance ofthe conventional concrete linings and effectively improving the ductility, impervious waterproofing performance, salt corrosion resistance, freeze-thaw resistance and surrounding soil mass deformationadaptability of lining structures. In addition, the lining material can be filled and compacted in a lining die without bumping down in a poured-in-place process, so that construction steps are simplified, and the schedule of construction is accelerated. The self-compaction rubber concrete canal lining provided by the invention has better popularization and application prospects.

Description

technical field [0001] The invention relates to channel lining of water conservancy projects, in particular to a self-compacting rubber concrete channel lining and a preparation method thereof. Background technique [0002] In recent years, the country has vigorously developed water-saving irrigation agriculture and implemented cross-regional water transfer. During the flow of water, channel leakage will cause huge losses. Channel lining is one of the water-saving and anti-seepage facilities in water conservancy projects. In channel lining, concrete channel lining is widely used in channel water delivery projects due to its advantages of low investment and fast construction. However, conventional concrete channel linings are often damaged due to external and internal reasons during use. The most common ones are frost heave damage of northern channel linings and erosion damage of channels in saline-alkali areas. On the other hand, with the continuous development of economy a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02E02B5/02
CPCC04B28/02C04B2201/50E02B5/02C04B18/08C04B18/22C04B14/06C04B14/02C04B2103/302C04B2103/50C04B2103/304
Inventor 邱流潮田雷李敬军杨永森
Owner CHINA AGRI UNIV
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