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Fiber-reinforced high-strength foam concrete as well as preparation method and application thereof

A foam concrete and fiber-reinforced technology, applied in the field of building materials, can solve the problems of unusable load-bearing components, low flexural strength, narrow application range, etc., and achieve the effects of strong compactness, good thermal insulation effect, and low water absorption

Active Publication Date: 2022-02-15
SICHUAN CHINA STRUCTURE RESIDENTIAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the strength of the existing foam concrete will decrease with the decrease of the bulk density, when the bulk density is lower than 1500kg / m 3 Finally, the strength is lower than 20MPa, and the flexural strength is also lower than 2MPa. Restricted by bulk density and strength, the application range is narrow and cannot be used for load-bearing components. Generally, it is only used for partitions and thermal insulation linings

Method used

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  • Fiber-reinforced high-strength foam concrete as well as preparation method and application thereof
  • Fiber-reinforced high-strength foam concrete as well as preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a fiber-reinforced high-strength foam concrete, the raw materials of which include: 50 kg of ordinary Portland cement, 5 kg of silica fume, 10 kg of mineral powder, 5 kg of stainless steel slag powder, 70 kg of quartz sand, 5 kg of polypropylene fiber, and a composite admixture 1kg, blowing agent 5kg, water 50kg, described quartz sand is made up of four kinds of continuously graded quartz sands, and component and percentage by weight are respectively 10-20 mesh quartz sand 42.9%, 20-40 mesh quartz sand 21.4%, 23.8% of 40-80 mesh quartz sand, 11.9% of 80-120 mesh quartz sand, the composite admixture includes: 71% of water reducer, 12% of thickener, 17% of foam stabilizer. The water reducer is a polycarboxylate water reducer, the thickener is a cellulose thickener, the foam stabilizer is a modified silicone amide, the mineral powder is S95 mineral powder, and the specific surface area is 700m 2 / kg, the surface area of ​​the stainless steel slag p...

Embodiment 2

[0025] This embodiment provides a fiber-reinforced high-strength foam concrete, the raw materials of which include: 100kg of ordinary Portland cement, 10kg of silica fume, 20kg of mineral powder, 10kg of stainless steel slag powder, 60kg of quartz sand, 5kg of polypropylene fiber, and a composite admixture 2kg, blowing agent 5kg, water 40kg, described quartz sand is made up of four kinds of continuously graded quartz sands, and component and percentage by weight are respectively 10-20 mesh quartz sand 47.3%, 20-40 mesh quartz sand 15.9%, 24.1% of 40-80 mesh quartz sand, 12.7% of 80-120 mesh quartz sand, the composite admixture includes: 71% of water reducer, 12% of thickener, 17% of foam stabilizer. The water reducer is a polycarboxylate water reducer, the thickener is a cellulose thickener, the foam stabilizer is a modified silicone amide, the mineral powder is S105 mineral powder, and the specific surface area is 500m 2 / kg, the surface area of ​​the stainless steel slag pow...

Embodiment 3

[0027] This embodiment provides a fiber-reinforced high-strength foam concrete, the raw materials of which include: 50kg of ordinary Portland cement, 20kg of silica fume, 30kg of mineral powder, 10kg of stainless steel slag powder, 70kg of quartz sand, 1kg of polypropylene fiber, and a composite admixture 1.5kg, foaming agent 2kg, water 23kg, the quartz sand is composed of four kinds of continuously graded quartz sand, the components and weight percentages are 45% of 10-20 mesh quartz sand and 19.3% of 20-40 mesh quartz sand , 25% of 40-80 mesh quartz sand, 10.7% of 80-120 mesh quartz sand, and the composite admixture comprises by weight percentage: 71% of water reducer, 12% of thickener, and 17% of foam stabilizer. The water reducer is a polycarboxylate water reducer, the thickener is a cellulose thickener, the foam stabilizer is a modified silicone amide, and the foaming agent is a vegetable foaming agent. The mineral powder mentioned above is S95 mineral powder with a speci...

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Abstract

The invention provides fiber-reinforced high-strength foam concrete. The fiber-reinforced high-strength foam concrete comprises the following raw materials in parts by weight: 50-100 parts of ordinary Portland cement, 5-20 parts of silica fume, 10-30 parts of mineral powder, 5-10 parts of stainless steel slag powder, 50-70 parts of quartz sand, 1-5 parts of polypropylene fibers, 1-2 parts of a composite admixture, 2-5 parts of a foaming agent and 23-50 parts of water. The concrete provided by the invention improves the strength of the whole concrete system while reducing the volume weight, and can be applied to load-bearing members.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a fiber-reinforced high-strength foam concrete and a preparation method thereof. Background technique [0002] Because foam concrete contains a large number of closed small pores, it has good thermal performance, that is, good thermal insulation performance; secondly, foam concrete is a porous material, so it is also a good sound insulation material. The material can be used as the sound insulation layer for the sound insulation board of expressways and the top floor of underground buildings; in addition, the porosity of foam concrete makes it have a low elastic modulus, so that it has good absorption and dispersion effect on impact load At the same time, foam concrete can be poured on site and closely integrated with the main project. Not only can it be produced in the factory into various products, but it can also be constructed on site, and it can be directly cast i...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10C04B16/06C04B18/14C04B14/06C04B111/52
CPCC04B28/04C04B38/10C04B16/0633C04B18/146C04B18/142C04B14/06C04B2111/52C04B2201/52C04B2201/50C04B18/141C04B2103/302C04B24/383C04B24/42C04B24/14Y02W30/91
Inventor 邹阳廖海军宋小军唐德兵
Owner SICHUAN CHINA STRUCTURE RESIDENTIAL IND
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