High-damping concrete with high-strength high-elasticity modulus

A high-elasticity, high-damping technology, applied in climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problem of inability to adopt seismic isolation measures, save related costs and speed up the development process , the effect of reducing the likelihood and degree of

Inactive Publication Date: 2018-09-14
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the underground structure requires a higher bearing capacity; on the other hand, the underground structure cannot adopt seismic isolation measures such as seismic isolation bearings commonly used in ground structures

Method used

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  • High-damping concrete with high-strength high-elasticity modulus
  • High-damping concrete with high-strength high-elasticity modulus
  • High-damping concrete with high-strength high-elasticity modulus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A high-strength, high-elastic-modulus high-damping concrete whose proportioning conditions are shown in Table 3, and the specific preparation steps are as follows:

[0046] 1) Weigh each raw material according to the proportion, and before concrete mixing, first wipe the mold clean, remove the sundries in the mold, and apply a layer of release agent in the mold;

[0047] 2) Mix the weighed natural sand, cement, fly ash, mineral powder, silicon powder, graphite, cement-based permeable crystalline waterproof material and stir for 30s with a forced mixer to make the cement and other solid materials uniform in the aggregate For distribution, add water, water reducer, styrene-acrylic emulsion, carboxylated styrene-butadiene latex and stir for 2 minutes, and finally add steel fiber and stir for 30 seconds to obtain a concrete mixture;

[0048] 3) The obtained concrete mixture is divided into two layers, each layer is about 1 / 2, and each layer is inserted and rammed about 2 to...

Embodiment 2

[0052] The preparation method of the high damping concrete described in Example 2 is roughly the same as that of Example 1, except that the formula conditions recorded in Table 2 are used respectively, and the strength grade of the obtained concrete is C40.

Embodiment 3

[0054] The preparation method of the high damping concrete described in Example 3 is roughly the same as that of Example 1, except that the formula conditions recorded in Table 2 are used respectively, and the strength grade of the obtained concrete is C40.

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Abstract

The invention discloses a high-damping concrete with high-strength high-elasticity modulus. The concrete takes cement, fly ash, mineral powder, natural sand, water, steel fiber, water reducer and additive as main raw materials by mixing. The high-damping concrete with the high-strength high-elasticity modulus has the advantages that under the condition of ensuring a high damping ratio of the high-damping concrete, the strength and elastic modulus of the damping concrete is further improved, so that the strength and elastic modulus of the damping concrete is comparable of that of a conventionalconcrete; the high-damping concrete is applied to an underground structure, not only is the high-damping characteristic adopted to consume earthquake energy to achieve the functions of seismic reduction and isolation, but also it can be ensured that the high-damping concrete has higher bearing capacity, further, the structure stability is improved, the possibility and degree of structure damage are reduced, the repairing cost is reduced, correlative charges of urban construction is reduced, and the high-damping concrete has great practical value to accelerate the development process of urbanmass transit and underground structure.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to high-strength and high-elastic-modulus high-damping concrete. Background technique [0002] With the rapid development of my country's urban rail transit construction and the construction of urban underground comprehensive utility corridors, urban underground structures are becoming more and more important in urban functions and have become an important part of urban lifeline projects. In this context, the seismic performance of urban underground structures has attracted widespread attention. my country's "Code for Seismic Design of Buildings" (GB50011-2010) and "Code for Seismic Design of Urban Rail Transit Structures" (GB50909-2014) both Design made demands. However, the underground structure requires a high bearing capacity; on the other hand, the underground structure cannot adopt seismic isolation measures such as seismic isolation bearings commonly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14C04B14/02
CPCC04B14/024C04B18/146C04B28/04C04B2201/50C04B22/002C04B18/08C04B18/141C04B14/068C04B14/48C04B2103/302C04B24/2641C04B24/2676C04B2103/65Y02W30/91
Inventor 王国波张旭王康张国强卢海勇
Owner WUHAN UNIV OF TECH
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