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Hydraulic high-performance concrete and preparation method thereof

A high-performance concrete and hydraulic technology, applied in the field of concrete, can solve the problems of poor frost resistance of concrete

Active Publication Date: 2020-10-30
JIANGSU PROVINCE WATER ENG SCI TECH CONSULTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concrete prepared by the invention has better anti-abrasion strength, but there is a problem that the frost resistance of the concrete is poor

Method used

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  • Hydraulic high-performance concrete and preparation method thereof

Examples

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preparation example Construction

[0030] The preparation method of hydraulic high-performance concrete includes the following steps:

[0031] S1: Weigh the components of concrete materials in proportion;

[0032] S2: Combine ultrafine natural zeolite powder, gypsum, polymer emulsion, glycol compounds, modified lignosulfonate, sheet silicate mineral materials, polysiloxane, oxalic acid, styrene-acrylic emulsion, and Put the crystalline hydrated magnesium aluminum silicate mineral into a stirring vessel, stir at a speed of 600r / min-700r / min for 25-35min, add half of the water while stirring, and finally stir to obtain a mixture;

[0033] S3: Pour cement, fine aggregate, coarse aggregate, slag, fly ash, silica fume, tert-butyl peroxide, t-butyl peroxide, nano-colloid, ettringite-lime composite expansion agent and steel fiber Put the mixture in the mortar mixing pot, and then pour the mixture in step S2 into the mortar mixing pot, first stir at 100r / min-200r / min for 20-30min, and add the other half of the water while st...

Embodiment 1

[0038] A hydraulic high performance concrete comprising the following components: 85 parts of fine aggregate, 95 parts of coarse aggregate, 70 parts of cement, 20 parts of slag, 22 parts of fly ash, 7 parts of silica fume, 1.3 parts of water reducing agent, 38 parts of water, 0.6 parts of ultra-fine natural zeolite powder, 1.2 parts of gypsum, 0.5 parts of polymer emulsion, 0.8 parts of glycol compounds, 0.2 parts of modified lignosulfonate, 1.5 parts of lamellar silicate mineral materials , 0.5 part of polysiloxane, 0.8 part of oxalic acid, 0.3 part of styrene-acrylic emulsion, 2 parts of crystalline hydrated magnesium aluminum silicate mineral, 0.4 part of superplasticizer, 0.05 part of air-entraining agent, 1 part of steel fiber, tertiary peroxide 0.6 of tert-butyl valerate, 3 parts of nano colloidal stone, 0.6 parts of ettringite-lime composite expansion agent;

[0039] The fine aggregate is made of natural sand with a particle size of 5mm-20mm, and the coarse aggregate is ma...

Embodiment 2

[0047] A hydraulic high performance concrete comprising the following components: 85 parts of fine aggregate, 90 parts of coarse aggregate, 80 parts of cement, 10 parts of slag, 22 parts of fly ash, 5 parts of silica fume, 2.3 parts of water reducing agent, 40 parts of water, 0.7 parts of ultra-fine natural zeolite powder, 0.8 parts of gypsum, 0.4 parts of polymer emulsion, 1.2 parts of glycol compounds, 0.2 parts of modified lignosulfonate, 2 parts of lamellar silicate mineral materials , 0.2 part of polysiloxane, 0.8 part of oxalic acid, 0.5 part of styrene-acrylic emulsion, 1 part of crystalline hydrated magnesium aluminum silicate mineral, 0.6 part of superplasticizer, 0.04 part of air-entraining agent, 0.9 part of steel fiber, tertiary peroxide 0.4 parts of tert-butyl valerate, 4 parts of nano colloidal stone, 0.8 parts of ettringite-lime composite expansion agent;

[0048] The fine aggregate is made of natural sand with a particle size of 5mm-20mm, and the coarse aggregate ...

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Abstract

The invention discloses hydraulic high-performance concrete, and belongs to the technical field of concrete. The concrete is prepared from the following components: a fine aggregate, coarse aggregate,cement, slag, fly ash, silica fume, a water reducing agent, water, superfine natural zeolite powder, gypsum, a polymer emulsion, a dihydric alcohol compound, modified lignosulfonate, a lamellar silicate mineral material, polysiloxane, oxalic acid, a styrene-acrylic emulsion, a crystalline hydrated magnesium aluminosilicate mineral, a reinforcing agent, an air entraining agent, steel fibers, tert-butyl peroxypivalate, nano montmorillonite and an ettringite-lime composite expanding agent, wherein the dosage ratio of the tert-butyl peroxyvalerate to the nano montmorillonite to the ettringite-lime composite expanding agent is (0.4-0.8): (2-4): (0.5-0.8). According to the invention, a reinforcing system composed of the tert-butyl peroxypivalate, the nano montmorillonite and the ettringite-limecomposite expanding agent is adopted in the hydraulic high-performance concrete disclosed by the invention, so that the anti-freezing performance of the hydraulic high-performance concrete is improved.

Description

Technical field [0001] The invention belongs to the technical field of concrete, and specifically relates to hydraulic high-performance concrete and a preparation method thereof. Background technique [0002] In water conservancy projects, the erosion of sand-containing high-speed water flow on hydraulic concrete structures and structures is the main cause of abrasion damage to the surface of hydraulic concrete, and it is also a common disease encountered in water conservancy and hydropower projects. Abrasion damage not only requires costly repair works, but also directly endangers the safe operation of the project. Therefore, higher requirements are put forward for the frost resistance and erosion resistance of hydraulic concrete. [0003] Chinese patent document "A concrete material and its preparation method (Patent No.: ZL201410483354.6)" discloses a concrete material including the following components: cement, fine aggregate, coarse aggregate, fly ash, silica fume, Carbon na...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/52C04B14/06C04B14/048C04B24/2641C04B24/26C04B24/02C04B24/18C04B22/00C04B18/08C04B18/146C04B14/48C04B24/045C04B14/36C04B2103/302C04B24/06C04B24/40C04B2103/30C04B2103/304C04B14/047C04B22/143
Inventor 宋力颜红勤颜凝香侯建宏宋欣澄胡立伟谢军刘正雨甄峰王文全
Owner JIANGSU PROVINCE WATER ENG SCI TECH CONSULTING
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