Check patentability & draft patents in minutes with Patsnap Eureka AI!

Composite wallboard, with low thermal conductivity and enough high strength, used for building structural wall

A technology of wall panels and composites, used in home appliances, building structures, other home appliances, etc., can solve the problems of thermal conductivity and impermeability of lightweight FRCC that are not mentioned.

Active Publication Date: 2013-08-21
NANO & ADVANCED MATERIALS INST
View PDF13 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent does not mention the thermal conductivity and impermeability of lightweight FRCC

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite wallboard, with low thermal conductivity and enough high strength, used for building structural wall
  • Composite wallboard, with low thermal conductivity and enough high strength, used for building structural wall
  • Composite wallboard, with low thermal conductivity and enough high strength, used for building structural wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This example shows the thermal insulation properties of foamed concrete. Figure 4 The equipment and samples shown include ordinary concrete 7, foamed concrete 8, FRCC layer 9 on the surface of ordinary concrete 7 and foamed concrete 8, infrared lamp 10, and thermocouple meter 11. The sample size of ordinary concrete 7 and foamed concrete 8 is 300mm (length)×200mm (width)×100mm (depth). The density of ordinary concrete 7 and foam concrete 8 is about 2400kg / m 3 And 1300kg / m 3 . Because the present invention is a composite wall panel containing a foam concrete core and one or more FRCC layers, the FRCC layer 9 is cast on the foam concrete 8. For proper comparison, the same FRCC layer 9 is also cast on the general concrete 7 with the same thickness. The infrared lamp 10 is used to simulate the situation where the external wall is exposed to sunlight. When the infrared lamp 10 continuously shines on the FRCC layer 9, the temperature of the FRCC layer 9 continues to rise, a...

Embodiment 2

[0041] In order to enable the composite wallboard of the present invention to be used as a prefabricated exterior wall, the wallboard needs to have sufficiently high compressive strength. Compared with ordinary foamed concrete that can only provide a compressive strength of less than 15MPa, the foamed concrete for composite wallboards disclosed herein can provide a compressive strength of 4-70MPa (depending on the composition design of the concrete core), as described herein The experimental results are shown. Table 2 shows the composition design of the foam concrete core. According to different composition designs, adjust the density and compressive strength of the foam concrete core. Figure 5 It shows the trend of 28-day compressive strength of foam concrete with plastic density. It can be seen from these results that the plastic density of the present invention is higher than 1400kg / m 3 The foamed concrete can provide 28-day compressive strength higher than 25MPa. For pla...

Embodiment 3

[0046] The purpose of this example is to demonstrate some interesting properties of the fiber reinforced cement based composite (FRCC) material used to prepare the protective layer of the present invention.

[0047] The FRCC composite used for the preparation of the protective layer contains cement, fly ash, lightweight fillers, silica sand, discontinuous polyvinyl alcohol (PVA) fibers, superplasticizers and hydroxypropyl methyl cellulose (HPMC). Examples of the different proportions of the components in the compound are expressed in parts by weight, unless otherwise specified, shown in the following table:

[0048] table 3.

[0049]

[0050]

[0051] Among them SP = superplasticizer

[0052] The cement used was Type I Portland cement (BS12; 1996, 52.5N) from Green Island Cement Co. Limited in Hong Kong. Fly ash was provided by Hong Kong CLP Holdings Limited. Hollow glass beads S15 from 3M Co, Minnesota, USA are used as lightweight fillers. The particle size distribution of silica ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a composite wallboard, with low thermal conductivity and enough high strength, used for building structural walls, and the composite wallboard can be used for manufacturing energy-saving buildings. The composite wallboard comprises a foam concrete core and two light fiber reinforced cement-based composite (FRCC) protection layers, wherein the foam concrete core exhibits enough high strength and low thermal conductivity, the two FRCC protection layers exhibit excellent ductility, and the foam concrete core is sandwiched between the two FRCC protection layers. The composite wallboard further comprises a certain amount of steel bars. The FRCC protection layers exhibit low thermal conductivity, excellent resistance to water contents / chloridions / gas, has multi-slit cracking properties, etc. The composite wallboard can be used for thermal insulation for various buildings in cold and hot regions.

Description

[0001] Cross reference with related applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 633,920 filed on February 21, 2012, the disclosure of which is incorporated herein by reference. Invention field [0003] The invention relates to a composite wallboard with sufficiently high strength and low thermal conductivity that can be used in the construction of structural walls and a method for manufacturing the system. Background technique [0004] In the past few years, due to increased concerns about greenhouse gas emissions caused by electricity use and rising energy costs, the demand for enclosures with better thermal insulation properties has greatly increased. In order to improve the thermal insulation performance of the enclosure structure, increasing the wall thickness is one of the solutions. However, this solution is not as practical as directly reducing the total thermal conductivity (k) of the envelope structure. [0005] For a s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/10E04C2/284
CPCY02A30/30
Inventor 梁坚凝张国辉朱宏刚林思惠
Owner NANO & ADVANCED MATERIALS INST
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com