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Cement-based decorative sheet with durable mirror surface effect

A cement-based, decorative board technology, applied in the field of construction and landscape decoration materials, can solve the problems of convenience in production and installation, structural safety, insufficient durability, inconformity with the development direction of concrete materials, and the decline in concrete gloss, so as to achieve beautiful appearance Long-lasting effect, good water resistance and mirror surface retention performance, raw material saving effect

Inactive Publication Date: 2018-12-07
TIANJIN RES INST OF BUILDING SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These effects can lead to a decrease or even loss of gloss in the "mirror" concrete
[0003] In addition, ordinary concrete materials have lower strength and greater brittleness than natural stone.
When used as a plate, it is often relatively heavy, and there are deficiencies in the convenience of fabrication and installation, structural safety and durability, and does not meet the development direction of "light weight and high strength" of concrete materials

Method used

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  • Cement-based decorative sheet with durable mirror surface effect
  • Cement-based decorative sheet with durable mirror surface effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A cement-based decorative panel with a durable mirror finish made by:

[0029] (1) Weigh raw materials: Ordinary Portland cement (P.O42.5 type) 120kg, fly ash microbeads 20kg, silica fume (SiO 2 The mass content is 90%) 10kg, quartz sand (particle size ≤ 0.5mm) 160kg, and the water reducing agent is early-strength polycarboxylate high-performance water reducing agent 20HE type 6kg, polyvinyl alcohol fiber (length 6-20mm, tensile strength 1200MPa) 2.3kg, water 25kg; mix to obtain a mixture;

[0030] (2) Pour the mixture into the mold, vibrate with a vibrator for 40 seconds to discharge visible air bubbles, let it stand for 3 hours, raise the temperature to 60°C at a heating rate of 20°C / hour, and maintain it for 15 hours at a constant temperature with steam, and then maintain it at a temperature of 10°C / hour Cool down to room temperature, take off the mold, then raise the temperature to 180°C at a heating rate of 20°C / hour, keep the dry heat constant temperature for 9 ...

Embodiment 2

[0036] A cement-based decorative panel with a durable mirror finish made by:

[0037] (1) Weigh raw materials by weight: ordinary Portland cement (P.O42.5 type) 100kg, fly ash microbeads 15kg, silica fume (SiO 2 The mass content is 91%) 8kg, quartz sand (particle size ≤ 0.5mm) 150kg, water reducer (composed of 0.05kg triisopropanolamine and 4.45kg polycarboxylate high-performance water reducer Type composition) 4.5kg, polyvinyl alcohol fiber (length 6-20mm, tensile strength 1400MPa) 1.5kg, water 18.45kg; mix to obtain a mixture;

[0038] (2) Pour the mixture into the mold, vibrate with a vibrator for 15 seconds to discharge visible air bubbles, let it stand for 6 hours, raise the temperature to 50°C at a heating rate of 15°C / hour, and maintain it at constant temperature with steam for 24 hours, at a rate of 8°C / hour Cool down to room temperature, take off the mold, then raise the temperature to 120°C at a heating rate of 15°C / hour, keep the dry heat at a constant temperature...

Embodiment 3

[0046] A cement-based decorative panel with a durable mirror finish made by:

[0047] (1) Weigh raw materials by weight: ordinary Portland cement (P.O52.5) ​​150kg, fly ash microbeads 45kg, silica fume (SiO 2 The mass content is 92%) 12kg, quartz sand (particle size ≤ 0.5mm) 187.5kg, and the water reducing agent is early-strength polycarboxylate high-performance water reducing agent Type 7kg, polyvinyl alcohol fiber (length 6-20mm, tensile strength 1600MPa) 3.75kg, water 27.5kg; Mix well, get mixture;

[0048] (2) Pour the mixture into the mold, vibrate with a vibrator for 60 seconds to discharge visible air bubbles, let it stand for 0.5 hours, raise the temperature to 70°C at a heating rate of 18°C / hour, and maintain the steam at constant temperature for 6 hours, at a temperature of 9°C / hour Cool down to room temperature, take off the mold, then raise the temperature to 240°C at a heating rate of 18°C / hour, keep the dry heat at a constant temperature for 6 hours, and then c...

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Abstract

The invention discloses a cement-based decorative sheet with a durable mirror surface effect. The cement-based decorative sheet is prepared by the following steps: weighing ordinary Portland cement, coal ash microspheres, silica fume, quartz sand, a water reducer, polyvinyl alcohol fibers and water, wherein the water reducer is early strength polycarboxylate-type high performance water reducer ora polycarboxylate high performance water reducer compounded with an early strength agent; uniformly mixing, so as to obtain a mixture; pouring the mixture into a mold, vibrating by virtue of a vibrator so as to discharge bubbles, standing, heating, carrying out constant-temperature steam maintenance, cooling, removing the mold, heating, standing in a constant-temperature dry heat state, cooling, coating with octyl triethoxysilane, and standing. The cement-based decorative sheet can preserve the mirror surface effect for a long time. The cement-based decorative sheet can meet artificial stone curtain walls and floors. After several dry heat-damp heat circulations, the cement-based decorative sheet can still preserve relatively high mirror surface glossiness and can be stored for a long timein an outdoor or damp-heat environment. The cement-based decorative sheet is light and high in strength, the raw materials are saved, the production efficiency is improved, the mounting and constructing difficulties are reduced, and the mounting and constructing costs are lowered.

Description

technical field [0001] The invention relates to the field of architectural and landscape decoration materials, in particular to a prefabricated cement-based decorative plate with a lasting mirror effect. Background technique [0002] Decorative concrete material and technology is an important field of concrete development and application in recent years. Due to the excellent plasticity of cement concrete material, it can be designed into any shape to meet the needs of architectural decoration without losing the simplicity and solemnity of the concrete material itself. It can often achieve or even surpass the decorative effect of natural stone. As a more advanced form of fair-faced concrete, "mirror" concrete has been reported in the 1990s, but due to technical limitations, there were few application cases at that time. In recent years, with the continuous development of concrete and admixture technology, mirror concrete technology has been applied in power plants, bridges a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B40/02C04B111/40
CPCC04B28/04C04B40/0295C04B2111/40C04B2201/50C04B2201/52C04B18/082C04B18/146C04B14/06C04B16/0641C04B2103/302C04B24/122C04B40/024C04B40/0263
Inventor 陈旭张建业
Owner TIANJIN RES INST OF BUILDING SCI
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