Impact-resistant compressed carbon fiber polymer latex powder composite modified concrete

A fiber polymer and polymer latex technology, which is applied in the field of concrete materials, can solve the problems that the impact resistance and anti-knock performance of concrete cannot be significantly improved, and achieve the effects of facilitating large-scale rapid construction, high toughness, and improving anti-deformation performance.

Inactive Publication Date: 2020-01-07
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology can only improve the static mechanical properties and durability of concrete, and cannot significantly improve the impact resistance and blast resistance of concrete.

Method used

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  • Impact-resistant compressed carbon fiber polymer latex powder composite modified concrete
  • Impact-resistant compressed carbon fiber polymer latex powder composite modified concrete
  • Impact-resistant compressed carbon fiber polymer latex powder composite modified concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention provides a composite modified concrete with anti-shock compression carbon fiber polymer latex powder. Latex powder 11%-13%; water reducing agent 4.65kg / m3, defoamer 1.16kg / m3, film-forming aid 2.34kg / m3, dispersant 1.56kg / m3 in admixture; among them, the cement with the label of 42.5 For Portland cement or ordinary Portland cement, medium river sand with a fineness modulus of 2.6-3.0 is used for sand; graded crushed stone with a maximum particle size of no more than 20mm is used for stone; FDN high-efficiency water reducer mother liquor is used for water reducing agent ; The defoaming agent is metal soap-type general defoaming agent; the film-forming aid is DN-12 film-forming aid; the dispersant is hydroxyethyl cellulose dispersant.

[0019] The batching ratio and specific components of the carbon fiber-polymer latex powder composite modified concrete involved in this embodiment are: the water-cement ratio (the mass ratio of the amount of water in the conc...

Embodiment 2

[0035] The batching ratio and specific components of the carbon fiber-polymer latex powder composite modified concrete involved in this embodiment are: the water-cement ratio is 0.49, the carbon fiber volume ratio is 0.2%, the polymer volume ratio is 12%, and the carbon fiber volume ratio is 0.15%. , The sand rate is 34%. specifically available

[0036]

[0037] The preparation method of the carbon fiber-polymer latex powder composite modified concrete that this example involves may further comprise the steps:

[0038] The first step is to determine the mix ratio of concrete, the mixing ratio of carbon fiber and latex powder: according to the required concrete grade, use the trial mix method to determine the mix ratio of concrete materials;

[0039] The second step is to prepare the required materials: prepare the required sand, stone, cement, carbon fiber and latex powder according to the material mix ratio of carbon fiber-polymer latex powder composite modified concrete;...

Embodiment 3

[0045] The batching ratio and specific components of the carbon fiber-polymer latex powder composite modified concrete involved in this embodiment are: the water-cement ratio is 0.49, the carbon fiber volume ratio is 0.25%, the polymer volume ratio is 13%, and the carbon fiber volume ratio is 0.15%. , The sand rate is 34%. specifically available

[0046]

[0047]

[0048]The preparation method of the carbon fiber-polymer latex powder composite modified concrete that this example involves may further comprise the steps:

[0049] The first step is to determine the mix ratio of concrete, the mixing ratio of carbon fiber and latex powder: according to the required concrete grade, use the trial mix method to determine the mix ratio of concrete materials;

[0050] The second step is to prepare the required materials: prepare the required sand, stone, cement, carbon fiber and latex powder according to the material mix ratio of carbon fiber-polymer latex powder composite modifi...

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Abstract

The invention discloses impact-resistant compressed carbon fiber polymer latex powder composite modified concrete. The impact-resistant compressed carbon fiber polymer latex powder composite modifiedconcrete comprises the following components in percentage by weight: 86.75%-88.85% of a concrete matrix material, 0.15%-0.25% of carbon fibers in a modified admixture and 11%-13% of polymer latex powder, the additives comprise 4.65 kg / m < 3 > of a water reducing agent, 1.16 kg / m < 3 > of a defoaming agent, 2.34 kg / m < 3 > of a coalescing agent and 1.56 kg / m < 3 > of a dispersing agent; wherein cement is Portland cement or ordinary Portland cement with the mark number of 42.5, and sand is medium river sand with the fineness modulus of 2.6-3.0; graded broken stone with the maximum particle sizenot larger than 20 mm is adopted as the stone; FDN efficient water reducing agent mother liquor is adopted as the water reducing agent; and the defoaming agent is a metallic soap common defoaming agent. According to the invention, the multiphase and multi-level characteristics of the concrete material are utilized; through optimized addition of the two admixtures of the carbon fiber and the latexpowder, the carbon fiber and the latex powder are well matched and bonded with the concrete, so that the concrete has high strength, high modulus and high toughness on the whole, the concrete is prevented from being broken, and the impact resistance and the fireproof and anti-knock properties of the concrete are obviously improved.

Description

technical field [0001] The invention relates to the field of concrete materials, in particular to an impact-resistant compression carbon fiber polymer latex powder composite modified concrete. Background technique [0002] The advantages of concrete are high compressive strength, easy to obtain materials, easy to shape, low price, and can be combined with steel to make various load-bearing components. However, the Achilles heel of concrete is low tensile strength, high brittleness, easy cracking, and poor toughness, which reduces the bearing capacity of concrete structures and shortens their service life, becoming a hidden danger of various disasters. In particular, the impact resistance of concrete is poor, and it is prone to brittle fracture and falling off under impact load. For bridges, roads, embankments and other structures with large impact loads, it is necessary to use fiber-polymer reinforced concrete with good impact resistance. However, for a long time, people h...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/38
CPCC04B14/386C04B28/04C04B2201/50C04B14/068C04B14/02C04B22/002C04B24/383C04B2103/302C04B2103/50C04B2103/0068C04B2103/0057
Inventor 刘高杰王腾蛟许金余孟博旭白二雷杨宁常森娄传鑫
Owner AIR FORCE UNIV PLA
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