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Ultrahigh-strength active powder concrete and preparation method thereof

A technology of active powder and concrete, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of compressive and flexural strength that cannot meet ultra-high compressive strength, and achieve improved flexural and Compressive strength, best durability and shear stability, effect of high compressive strength

Active Publication Date: 2009-10-21
LIUZHOU OVM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

"However, its overall performance, especially its compressive and flexural strength, cannot meet the needs of manufacturing prefabricated components with ultra-high compressive strength and high flexural performance.

Method used

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  • Ultrahigh-strength active powder concrete and preparation method thereof
  • Ultrahigh-strength active powder concrete and preparation method thereof

Examples

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Effect test

Embodiment 1

[0046] An ultra-high-strength reactive powder concrete and a manufacturing method thereof. The ultra-high-strength reactive powder concrete is composed of the following raw materials mixed. In the mixture, the content of each component is calculated as:

[0047] 1000 parts of 42.5 Portland cement, 1400 parts of 20-100 mesh quartz sand, SiO 2 ≥95% silica fume 90 parts, 1500 mesh silica powder 300 parts, 300 mesh quartz powder 290 parts, high strength steel fiber 80 parts, superplasticizer 30 parts, water 280 parts, AEA expansion agent 120 parts.

[0048] The production method is: prepare the above-mentioned components in proportion, first pour the high-efficiency water reducer and water into the mixer at the same time and stir for about 1 minute to make them uniform, and then mix the remaining materials - cement, quartz sand, silica fume , microsilica powder, quartz powder, AEA expansion agent, defoamer and other materials are poured into the mixer, stirred evenly to form a pas...

Embodiment 5 Embodiment 8

[0052] An ultra-high-strength reactive powder concrete and its manufacturing method, its main components and manufacturing method are basically the same as in Example 1, the difference is that latex powder is added to the components of the ultra-high-strength reactive powder concrete, each component The content is calculated as:

[0053] Portland cement 1000 parts, quartz sand 600-1400 parts,

[0054] 90-400 parts of silica fume, 200-400 parts of silica powder,

[0055] 100-300 parts of quartz powder, 80-350 parts of high-strength steel fiber,

[0056] 15-30 parts of superplasticizer, 250-320 parts of water,

[0057] 60-120 parts of AEA expansion agent, 1-15 parts of latex powder,

[0058] 0-2 parts of defoamer.

[0059] For the specific components of each embodiment, please refer to the attached table 1: "Example 1-Example 20 Ultra-high-strength reactive powder concrete component content list", the data of Example 51-Example 8.

[0060] The flexural strength of the ultra...

Embodiment 9 Embodiment 12

[0062] An ultra-high-strength reactive powder concrete and a manufacturing method thereof, its main components and manufacturing method are basically the same as in Example 1, the difference is that polyester fibers are added to the components of the ultra-high-strength reactive powder concrete, and each group Parts content is calculated as:

[0063] Portland cement 1000 parts, quartz sand 600-1400 parts,

[0064] 90-400 parts of silica fume, 200-400 parts of silica powder,

[0065] 100-300 parts of quartz powder, 80-350 parts of high-strength steel fiber,

[0066] 15-30 parts of superplasticizer, 250-320 parts of water,

[0067] 60-120 parts of AEA expansion agent, 1-10 parts of polyester fiber,

[0068] 0-2 parts of defoamer.

[0069] For the specific components of each embodiment and the flexural strength and compressive strength of the manufactured ultra-high-strength reactive powder concrete, please refer to the data of Examples 9 to 12 in Attached Table 1 and Attache...

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Abstract

An ultrahigh-strength active powder concrete is a mixture prepared by mixing the following materials according to weight portion: 1000 portions of Portland cement, 600-1400 portions of quartz sand, 90-400 portions of siliceous dust, 200-400 portions of silicon powder, 100-300 portions of quartz powder, 80-350 portions of high-strength steel fiber, 15-30 portions of high-efficiency water reducing agent, 250-320 portions of water, 60-120 portions of AEA expanding agents, 0-15 portions of latex powder, 0-10 portions of polyester fiber and 0-2 portions of antifoam agents. The preparation method comprises the following steps: preparing the materials according to the weight proportion, firstly mixing water, cement, quartz sand, siliceous dust, silicon powder, quartz powder, AEA expanding agents, high-efficiency water reducing agent, latex powder, polyester fiber, and antifoam agents into pasty state; then adding high-strength steel fiber, and mixing for 4-6 minutes. The prepared active powder concrete has super-high compressive and bending strengths, high mechanical property and high durability.

Description

Technical field: [0001] The invention relates to a production method of concrete and concrete components, in particular to a production method of active powder concrete and active powder concrete components with ultra-high compressive strength and high flexural resistance. Background technique: [0002] Reactive Powder Concrete (RPC) is a new type of cement-based composite material developed based on DSP (Densified System Containing Homogenously Arranged Ultrafine Particles, a dense material with uniform distribution of ultrafine particles) and fiber reinforced materials. The material has ultra-high strength, high mechanical properties, high durability, good volume stability and environmental performance, and has become a new research and application hotspot in the field of international engineering materials. [0003] At present, domestic components used in occasions requiring ultra-high compressive strength and high flexural performance are generally made of metal. Such co...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06C04B14/04C04B14/48C04B16/06
CPCC04B28/04Y02W30/91C04B14/06C04B14/062C04B14/48C04B18/146C04B24/26C04B2103/302C04B16/0683C04B2103/0057C04B2103/50
Inventor 王日艺庞中华陈钰烨周红梅朱万旭
Owner LIUZHOU OVM MASCH CO LTD
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