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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technology can only improve the static mechanical properties and durability of co

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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
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Example Embodiment

[0017] Example 1

[0018] The present invention provides an impact-resistant compression carbon fiber polymer latex powder composite modified concrete. The components and contents are as follows: concrete matrix material 86.75%-88.85%, modified admixture of carbon fiber 0.15%-0.25% and polymer Latex powder 11%-13%; among the admixtures, water reducing agent 4.65kg / m3, defoaming agent 1.16kg / m3, film forming aid 2.34kg / m3, dispersing agent 1.56kg / m3; of which cement is 42.5 Portland cement or ordinary Portland cement, the sand uses medium river sand with a fineness modulus of 2.6-3.0; the stone uses graded gravel with the maximum particle size not exceeding 20mm; the water reducing agent uses FDN superplasticizer mother liquor ; The antifoaming agent adopts the common defoaming agent of metal soap; the film forming aid adopts the DN-12 type film forming aid; the dispersant adopts hydroxyethyl cellulose dispersant.

[0019] The proportion and specific components of the carbon fiber-...

Example Embodiment

[0034] Example 2

[0035] The proportion 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%. Specific available

[0036]

[0037] The preparation method of carbon fiber-polymer latex powder composite modified concrete involved in this example includes the following steps:

[0038] The first step is to determine the mixing ratio of concrete, the volume ratio of carbon fiber and latex powder: According to the concrete number to be equipped, the trial mixing method is used to determine the material mixing ratio of concrete;

[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 ratio of the carbon fiber-polymer latex powder composite modifi...

Example Embodiment

[0044] Example 3

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

[0046]

[0047]

[0048] The preparation method of carbon fiber-polymer latex powder composite modified concrete involved in this example includes the following steps:

[0049] The first step is to determine the mixing ratio of concrete, the volume ratio of carbon fiber and latex powder: According to the concrete number to be equipped, the trial mixing method is used to determine the material mixing ratio of concrete;

[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 ratio of the carbon fiber-polymer latex powder composite modified conc...

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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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