Ultrahigh strength self-compaction bare concrete for wind turbine generator tower

A technology of fair-faced concrete and wind turbines, which is applied in the field of ultra-high-strength self-compacting concrete and ultra-high-strength self-compacting concrete for wind turbine towers. It can solve problems in the initial stage, reduce the maximum peak value of heat of hydration, and improve mechanical properties. And deformation performance, increase the effect of obvious effect

Inactive Publication Date: 2017-10-31
中建西部建设新疆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current research on reinforced concrete fan towers is still mainly focused on conceptual design research and economic analysis and comparison, and research on the preparation technology of reinforced concrete for practical engineering is still in its infancy.
There are few reports on the strength performance of concrete for wind power towers, the crack resistance of large-area curved surfaces, and the fatigue resistance under wind loads.

Method used

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  • Ultrahigh strength self-compaction bare concrete for wind turbine generator tower
  • Ultrahigh strength self-compaction bare concrete for wind turbine generator tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of ultra-high-strength self-compacting fair-faced concrete for the tower of a wind power generating set, one square (m 3 ) Concrete components are as follows: cement 400kg, microbeads 126.1kg, grade I fly ash 31.5kg, mineral powder 31.5kg, silica fume 40.9, cellulose fiber 1.2 kg, machine-made sand 820kg, gravel 985kg, water reducer 9.0kg , adding 6.58 kg of compacting agent and 130 kg of water.

[0040] After the materials are ready, the above components are mixed and stirred by a forced mixer for 1.5mim to obtain the ultra-high-strength self-compacting concrete for wind turbine towers described in the present invention.

[0041] The concrete of the invention has excellent working performance, low viscosity, and no segregation and bleeding phenomenon. The performance, hardening performance and shrinkage of the concrete mixture are shown in Table 2 below.

Embodiment 2

[0043] A kind of ultra-high-strength self-compacting fair-faced concrete for the tower of a wind power generating set, one square (m 3 ) Concrete components are as follows: cement 408kg, microbeads 149kg, Class I fly ash 37.3Kg, mineral powder 37.3kg, silica fume 48.4, cellulose fiber 1.2 kg, machine-made sand 665kg, gravel 995kg, water reducer 9.5kg, Add 6.2 kg of compacting agent and 130 kg of water.

[0044] After the materials are ready, the above components are mixed and stirred by a forced mixer for 1.5mim to obtain the ultra-high-strength self-compacting concrete for wind turbine towers described in the present invention.

[0045] The concrete of the invention has excellent working performance, low viscosity, and no segregation and bleeding phenomenon. The performance, hardening performance and shrinkage of the concrete mixture are shown in Table 2 below.

Embodiment 3

[0047] A kind of ultra-high-strength self-compacting fair-faced concrete for the tower of a wind power generating set, one square (m 3 ) Concrete components are as follows: cement 400kg, microbeads 126.1kg, grade I fly ash 31.5kg, mineral powder 31.5kg, silica fume 40.9, cellulose fiber 1.2 kg, machine-made sand 670kg, gravel 985kg, water reducer 10.1kg , adding 6.1 kg of compacting agent and 125 kg of water.

[0048] After the materials are ready, the above components are mixed and stirred by a forced mixer for 1.5mim to obtain the ultra-high-strength self-compacting concrete for wind turbine towers described in the present invention.

[0049] The concrete of the invention has excellent working performance, low viscosity, and no segregation and bleeding phenomenon. The performance, hardening performance and shrinkage of the concrete mixture are shown in Table 2 below.

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Abstract

The invention discloses an ultrahigh strength self-compaction bare concrete for a wind turbine generator tower. The ultrahigh strength self-compaction bare concrete is prepared from the following components: 650-680kg / m3 binding material, 640-680kg / m3 machine-made sand, 980-1020kg / m3 macadam, 7-11kg / m3 water reducer, 6-10kg / m3 enhancing compacting agent, 1-2kg / m3 cellulosic fiber and 115-130kg / m3 water, wherein the binding material contains the following components by dosage per stere (kg / m3): 390-408kg / m3 cement, 35-37kg / m3 micro-bead, 142-149kg / m3 mineral powder, 35-37kg / m3 coal ash and 48-49kg / m3 silica fume. The ultrahigh strength self-compaction bare concrete for the wind turbine generator tower has the advantage that the concrete with strength grade within the scope of C100-C120, self-compaction, pumpability, excellent hook surface crack resistance and fatigue resistance property can be prepared.

Description

technical field [0001] The invention relates to an ultra-high-strength self-compacting concrete, in particular to an ultra-high-strength self-compacting concrete for a tower tube of a wind power generating set adapted to the special environment of a wind farm, and belongs to the technical field of building materials. Background technique [0002] Under the condition of clear wind resources, the investment scale of the wind farm will directly affect the income of the project, so it is of great significance to optimize the project to reduce the investment and increase the income. At present, the towers of large-scale wind turbines at home and abroad are mainly steel towers, including steel towers and conical steel towers. Taking a SOMW wind farm as an example, the investment in the steel structure tower (including the foundation ring) accounts for about 14% of the total project investment. Therefore, it is very necessary to optimize the structure type of the tower to reduce t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B14/02C04B14/06C04B14/18C04B16/02C04B18/08C04B18/12C04B18/14C04B103/30C04B103/44C04B103/50
CPCC04B28/02C04B14/18C04B18/08C04B18/146C04B18/12C04B16/02C04B14/06C04B14/02C04B2103/302C04B2103/50C04B2103/304C04B2103/44Y02W30/91
Inventor 朱炎宁刘军艾洪祥王玉娟罗志明刘向楠李凯
Owner 中建西部建设新疆有限公司
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