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Method for building new-box type fly ash double-low concrete coastal levee foundation

A production method and technology of fly ash, which can be used in dikes, coastline protection, dams, etc., and can solve problems such as unsatisfactory results

Inactive Publication Date: 2004-09-08
DAGANG OIL FIELD GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of building embankments and building roads and laying foundations in muddy soft soils in extremely shallow seas or intertidal areas is not satisfactory.

Method used

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  • Method for building new-box type fly ash double-low concrete coastal levee foundation
  • Method for building new-box type fly ash double-low concrete coastal levee foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add double-low concrete, deactivated fly ash (aggregate) discarded by power plants, and lithium salt at a weight ratio of 1:3:0.006 to form fly ash double-low concrete dry material.

[0033] Use a pump to suck seawater above 4°C, and mix and stir the above-mentioned dry material and seawater at a weight ratio of 1:2.5 to form a fly ash double-low concrete wet material.

[0034] 3. Use galvanized steel wires to prepare metal cages according to the length, width and height of 4m, 2m and 0.35m. Lay the metal cages on the surface of the beach mud layer according to the required basic area, and connect them with iron wires.

[0035] 4. Spray the fly ash double-low concrete wet material into the metal cage.

[0036] After the foundation is formed for 20 minutes, its compressive strength can reach 0.7Mpa, and one day later, its compressive strength can reach 0.9Mpa, and its flexural strength can reach 2.4Mpa.

Embodiment 2

[0038] Add double-low concrete, deactivated fly ash (aggregate) discarded by power plants, and lithium salt of high water-curing material at a weight ratio of 1:6:0.01 to form fly ash double-low concrete dry material.

[0039] Use a pump to pump seawater above 4°C, and mix the above dry material with seawater at a weight ratio of 1:3 to form a fly ash double-low concrete wet material.

[0040] 3. Use galvanized steel wires to prepare metal cages according to the length, width and height of 5m, 3m and 0.5m. Lay the metal cages on the surface of the beach mud layer according to the required basic area, and connect them with iron wires.

[0041] 4. Spray the fly ash double-low concrete wet material into the metal cage.

[0042] After the foundation is formed for 20 minutes, its compressive strength can reach 0.5Mpa, and one day later, its compressive strength can reach 0.8Mpa, and its flexural strength can reach 2.4Mpa.

Embodiment 3

[0044] Add double-low concrete, deactivated fly ash (aggregate) discarded by power plants, and lithium salt of high water-curing material at a weight ratio of 1:4:0.008 to form fly ash double-low concrete dry material.

[0045] Use a pump to pump seawater above 4°C, and mix the above dry material with seawater at a weight ratio of 1:2.8 to form a fly ash double-low concrete wet material.

[0046] 3. Use galvanized steel wires to prepare metal cages according to the length, width and height of 3m, 1m and 0.1m. Lay the metal cages on the surface of the beach mud layer according to the required basic area, and connect them with iron wires.

[0047] 4. Spray the fly ash double-low concrete wet material into the metal cage.

[0048] After the foundation is formed for 15 minutes, its compressive strength can reach 0.6Mpa, and one day later, its compressive strength can reach 0.78Mpa, and its flexural strength can reach 2.4Mpa.

[0049] The above-mentioned construction should be car...

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Abstract

The present invention relates to a net-box type flyash double-low concrete sea dike foundation building method, and is characterized by that according to the weight ratio of 1:3-6:0.006-0.01 the double-low concrete, flyash and lithium salt are respectively added, then according to the weight ratio of 1:2.5-3 the above-mentioned obtained mixturre is mixed with sea water with above 4 deg.C to obtain mixed wet material, then said mixed wet material can be injected into the metal net-box so as to form sea dike and landing stage soundation with high bearing force on the silt soft soil.

Description

[0001] Involved areas [0002] The invention relates to a method for constructing net box fly ash double-low concrete foundations of seawalls and other offshore facilities in marine engineering Background technique [0003] In order to develop the marginal oil fields extending from the land to the coastal waters, a large number of seawalls or other offshore facilities need to be built. The traditional seawalls are all high-fill sandstone seawalls, and the foundation is rubble squeezed silt and multi-layer thorns. In this way, the construction thickness of each layer is limited, and due to the daily tide, a large amount of earthwork for embankment is lost, resulting in a lot of waste, and the construction period is also greatly reduced due to the limitation of twice a day. extend. [0004] Metal net cage is a kind of good flexible structure, which is mostly used in bank revetment, slope revetment, retaining wall and water conservancy projects, but it has not been used in found...

Claims

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Application Information

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IPC IPC(8): C04B18/08E02B3/10
CPCY02A10/11Y02W30/91
Inventor 李世海邱锐镝常玉华张文洪徐以宏田中玮周立宏韩专
Owner DAGANG OIL FIELD GRP