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Fiber concrete for anticracking impervious superthin plate shell/tube member, and preparation method and application thereof

A technology of fiber concrete and components, which is applied in the fields of thin tubes, thin shells, and new building thin plates. It can solve the problems of poor anti-cracking and impermeability, laborious work, and large volume, and achieve high energy absorption capacity and toughness. Reduce engineering Cost, effect of high carrying capacity

Inactive Publication Date: 2016-01-13
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Existing concrete slabs and shell members have the disadvantages of heavy weight, large volume, poor anti-crack and anti-seepage functions, etc., resulting in increased costs in production, transportation, installation, maintenance, safety, etc. and labor-intensive

Method used

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  • Fiber concrete for anticracking impervious superthin plate shell/tube member, and preparation method and application thereof
  • Fiber concrete for anticracking impervious superthin plate shell/tube member, and preparation method and application thereof
  • Fiber concrete for anticracking impervious superthin plate shell/tube member, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a fiber concrete for anti-cracking and anti-permeability ultra-thin plate shell and tube components. The composition of the fiber concrete includes cement, silica fume, slag powder, quartz sand, polycarboxylate high-efficiency water reducer, and thickener , defoaming agent, copper-plated fine steel fiber and non-metallic fiber, of which: cement: silica fume: slag powder: quartz sand: water: polycarboxylate superplasticizer: thickener The mass ratio is 1:0.07:0.12: 1.4: 0.20: 0.03: 0.02; the amount of defoaming agent is 4% to 5% of the amount of water reducer; the length of copper-plated fine steel fibers is between 12 and 19mm, the diameter must be ≤ 240μm, and the volume dosage is 1.5% to 3.5%; the length of non-metallic fibers is between 12 and 19mm, and the volume dosage is 0.05 to 0.2%.

[0040] The compressive strength of the fiber concrete prepared in this embodiment is 176MPa; the modulus of elasticity is 52Gpa; the flexural strength is 2...

Embodiment 2

[0044]This embodiment provides a fiber concrete for anti-cracking and anti-permeability ultra-thin plate shell and tube components. The composition of the fiber concrete includes cement, silica fume, slag powder, quartz sand, polycarboxylate high-efficiency water reducer, and thickener , defoaming agent, copper-plated fine steel fiber and non-metallic fiber, of which: cement: silica fume: slag powder: quartz sand: water: polycarboxylate superplasticizer: thickener The mass ratio is 1:0.09:0.16: 1.4: 0.22: 0.02: 0.03; the amount of defoaming agent is 4% to 5% of the amount of water reducer; the length of copper-plated fine steel fibers is between 12 and 19mm, the diameter must be ≤ 240μm, and the volume dosage is 1.5% to 3.5%; the length of non-metallic fibers is between 12 and 19mm, and the volume dosage is 0.05 to 0.2%.

[0045] The compressive strength of the fiber concrete prepared in this embodiment is 158MPa; the modulus of elasticity is 49Gpa; the flexural strength is 23...

Embodiment 3

[0049] This embodiment provides a fiber concrete for anti-cracking and anti-permeability ultra-thin plate shell and tube components. The composition of the fiber concrete includes cement, silica fume, slag powder, quartz sand, polycarboxylate high-efficiency water reducer, and thickener , defoaming agent, copper-plated fine steel fiber and non-metallic fiber, of which: cement: silica fume: slag powder: quartz sand: water: polycarboxylate superplasticizer: thickener The mass ratio is 1:0.15:0.20: 1.4: 0.25: 0.02: 0.04; the amount of defoaming agent is 4% to 5% of the amount of water reducing agent; the length of copper-plated fine steel fibers is between 12 and 19mm, the diameter must be ≤ 240μm, and the volume dosage is 1.5% to 3.5%; the length of non-metallic fibers is between 12 and 19mm, and the volume dosage is 0.05 to 0.2%;

[0050] The compressive strength of the fiber concrete prepared in this embodiment is 178MPa; the modulus of elasticity is 53Gpa; the flexural streng...

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Abstract

The invention provides fiber concrete for an anticracking impervious superthin plate shell / tube member, and a preparation method and application thereof. The fiber concrete comprises cement, silica fume, slag powder, quartz sand, water, a water reducer and a thickening agent with the mass ratio of 1:(0.05-0.15):(0.08-0.20):(1.2-1.5):(0.18-0.25):(0.02-0.04):(0.02-0.04), and the doping amount of an antifoaming agent is 4%-5% by volume of the water reducer. A superthin plate or thin-shell member made from the fiber concrete possesses the characteristics of high strength, high impact resistance, crack control capability, energy absorption capability and high toughness. The fiber-concrete anticarcking impervious thin plate shell / tube member prepared by employing the method can be used as a protection plate shell / tube of other members and an external protective layer after being subjected to pouring molding, the durability and the service life of the concrete superthin plate shell / tube member are substantially improved, and the engineering cost is substantially reduced.

Description

technical field [0001] The invention relates to the technical field of application of new building thin plates, thin shells and thin tubes, in particular to a fiber concrete for anti-crack and anti-permeability ultra-thin plate shell and tube components and its preparation method and application. Background technique [0002] Existing concrete slabs and shell members have the disadvantages of heavy weight, large volume, poor anti-crack and anti-seepage functions, etc., resulting in increased costs in production, transportation, installation, maintenance, safety, etc. and labor-intensive. Durability has always been one of the main problems faced by reinforced concrete members. The durability of ordinary thin-slab and thin-shell concrete members will face severe tests under the influence of external natural environment, marine environment and underground environment. [0003] In addition, for hydraulic components and port and sea components, the anti-crack and anti-seepage cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B1/08B28B1/14C04B40/00C04B111/27
Inventor 方从启纪腾飞周岱
Owner SHANGHAI JIAO TONG UNIV
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