High-strength concrete plate and preparation method thereof

A high-strength concrete and plate technology, applied in the field of building materials, can solve problems such as plate damage, safety production accidents, and crushing, and achieve the effects of improving concrete strength, reducing cement consumption, and improving compactness.

Active Publication Date: 2020-04-10
南京绿色增材智造研究院有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

[0008] The strength of lightweight concrete slabs is very low (generally <5MPa), which cannot meet the requirements of building structures, and can only be used as non-load-bearing partition walls or insulation materials
In addition, air-entrained concrete wall panels are very brittle, easily broken during transportation and construction, and cannot be nailed on the wall panels
[0009] At present, the forming methods of the slabs used in the field of prefabricated concrete components are ordinary pouring or extrusion molding, etc., but the strength of the concrete slabs prepared by the above molding methods is low, and when the concrete slabs have a large self-weight, the slabs in the prefabricated hoisting Damage will occur during the process, resulting in safety production accidents

Method used

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  • High-strength concrete plate and preparation method thereof

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Effect test

Embodiment approach 1

[0028] This embodiment provides a high-strength concrete slab, which consists of the following parts by mass: 100 parts of cement, 100 parts of limestone powder, 100 parts of slag powder, 700 parts of high-strength internal curing aggregate with 10% water content and a particle size of less than 1mm, water-reducing 5 parts of agent, 6 parts of starch glue, 18 parts of silica sol, 6 parts of pure acrylic emulsion, 75 parts of water, and 10 parts of PVA fiber.

[0029] The specific preparation steps of the above-mentioned high-strength concrete slab are as follows:

[0030] 1) Stir starch glue, silica sol, pure acrylic emulsion, water reducer and water in proportion;

[0031] 2) Mix cement, limestone powder, slag powder, internal curing aggregate and PVA fiber in proportion, and add the mixed liquid in step 1) into it in the form of spray evenly during the stirring process, and the spray rate is 10 g / s;

[0032] 3) Pour the obtained mixed material into the mold, and use a pre...

Embodiment approach 2

[0035] This embodiment provides a high-strength concrete slab, which consists of the following parts by mass: 150 parts of cement, 300 parts of limestone powder, 50 parts of mineral powder, 1500 parts of high-strength internal curing aggregate with 30% water content, 15 parts of water reducing agent, 10 parts of starch glue, 30 parts of silica sol, 10 parts of pure acrylic emulsion, 30 parts of water, 5 parts of PVA fiber.

[0036] The specific preparation steps of the above-mentioned high-strength concrete slab are as follows:

[0037] 1) Stir starch glue, silica sol, pure acrylic emulsion, water reducer and water in proportion;

[0038] 2) Stir the cement, limestone powder, slag powder, internal curing aggregate and PVA fiber evenly in proportion, and add the mixed liquid in step 1) into it in the form of spray evenly during the stirring process, and the spray rate is 50 g / s;

[0039] 3) Pour the obtained mixed material into the mold, and use a press to vacuum compact the...

Embodiment approach 3

[0043] This embodiment provides a high-strength concrete slab, which consists of the following parts by mass: 100 parts of cement, 250 parts of limestone powder, 150 parts of mineral powder, 900 parts of high-strength internal curing aggregate with 15% water content, 10 parts of water reducing agent, 8 parts of starch glue, 24 parts of silica sol, 8 parts of pure acrylic emulsion, 50 parts of water, 10 parts of PVA fiber.

[0044] The specific preparation steps of the above-mentioned high-strength concrete slab are as follows:

[0045] 1) Stir starch glue, silica sol, pure acrylic emulsion, water reducer and water in proportion;

[0046] 2) Stir the cement, limestone powder, slag powder, internal curing aggregate and PVA fiber in proportion, and add the mixed liquid in step 1) into it in the form of spray evenly during the stirring process, and the spray rate is 30 g / s;

[0047] 3) Pour the obtained mixed material into the mold, and use a press to vacuum compact the above m...

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Abstract

The invention relates to the technical field of building materials, and discloses a high-strength concrete plate and a preparation method thereof. The high-strength concrete plate is composed of the following components by mass parts: 300-500 parts of cementing materials, 700-1500 parts of aggregates, 5-15 parts of water reducing agents, 30-50 parts of emulsions, 30-75 parts of water and 5-10 parts of fibers. The preparation method comprises the following steps: 1) uniformly stirring the emulsion, the water reducing agent and the water in proportion; 2) uniformly stirring the cementing material, the aggregate and the fibers in proportion and uniformly adding the mixed liquid obtained in the step 1) into the mixture in a spraying form in the stirring process; 3) pouring the obtained mixed material into a mold, compacting under the condition of 0.1-20 MPa, maintaining the pressure for 30 s and demolding to obtain a porous concrete plank; and 4) carrying out moisture maintenance on the demolded concrete plank. The prepared concrete pltae is high in strength and small in cement consumption and can be used as a fabricated building plate.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength concrete plate and a preparation method thereof. Background technique [0002] In recent years, driven by building energy-saving policies, building energy-saving technologies and energy-saving materials have developed rapidly. mix [0003] Concrete panels are the most widely used building materials in the construction industry. With the development of the economy and the advancement of technology, people are more interested in building materials [0004] The requirements are also constantly increasing, not only the concrete slabs are required to have high strength and durability, but also the concrete slabs should also meet the requirements of [0005] Meet the requirements of light weight and environmental protection. At present, the most common concrete slabs are used in industrial and civil buildings, although the strength (a [0006] Generally 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/24C04B40/00B28B3/00B28B11/24C04B24/38C04B24/26C04B111/20
CPCB28B3/00B28B11/245C04B28/24C04B40/0028C04B2111/29C04B2201/50C04B2201/52C04B7/00C04B14/28C04B18/141C04B14/303C04B24/38C04B24/2641C04B2103/302C04B16/0641
Inventor 张亚梅李保亮陈春张培根孙正明
Owner 南京绿色增材智造研究院有限公司
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