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Nano foamed concrete, reinforced insulation wallboard and preparation method of reinforced insulation wallboard

A technology of nano-foam and thermal insulation wallboard, applied in the direction of building components, buildings, building structures, etc., can solve the problem of insufficient consideration of volume shrinkage resistance, damping and shock resistance, environmental protection benefits, reduced foam stability, and failure to consider wave absorbing agents. and other problems, to achieve the effect of excellent mechanical properties and thermal insulation properties, reduced density, and uniform pore structure

Active Publication Date: 2013-10-23
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its defects are: the application did not consider that the wave absorbing agent may cause retardation of the foamed concrete slurry, thereby reducing the stability of the foam, and did not consider the wave absorbing agent, especially the nano wave absorbing agent, as the nucleating group of the foamed concrete It does not fully consider the necessary anti-volume shrinkage ability, damping and anti-seismic ability of hardened foam concrete materials, and the environmental protection benefits of resource utilization of solid waste in it.

Method used

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  • Nano foamed concrete, reinforced insulation wallboard and preparation method of reinforced insulation wallboard

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the nano-foamed concrete and reinforced thermal insulation wallboard products of the present invention include a nano-foamed concrete layer 1, a steel mesh skeleton 2 formed by a double-layer upper and lower layers, and water-resistant face protection paper 3 on the upper and lower surfaces and the embedding filling joints Mortar4. In addition to the hardened concrete, the nano-foam concrete layer also includes fiber nano-wave absorbing agent 1a and micro-bubbles 1b distributed therein.

[0041] The preparation steps of nano foam concrete products are as follows:

[0042] (1) Dissolve 0.5 parts of polycarboxylic acid superplasticizer MPEG in 60 parts of water, add 0.05 parts of carbon nanofibers CNFs with a diameter of 60-100 nm and a length of 6-30 μm, and perform ultrasonic treatment for 1 hour (ultrasonic power 100W, ultrasonic frequency 40kHz, every ultrasonic 50s, pause 10s, a total of 60 times), then add 6 parts of foaming agent SDBS, ...

Embodiment 2

[0048] The steel mesh skeleton in the embedded steel mesh insulation wallboard products is a single-layer steel mesh that has been erected at the half-height of the middle of the wallboard before the nano foam concrete slurry is spread. Others are with embodiment 1.

[0049] Respectively refer to GB / T11969-2008 "Autoclaved Air-entrained Concrete Performance Test Method", GB / T17671-1999 "Cement Mortar Strength Test Method", GB / T10294-2008 "Steady-state Thermal Resistance of Thermal Insulation Materials and Determination and Protection of Related Properties Hot plate method, JC / T603-2004 "Cement mortar dry shrinkage test method" to measure the dry density, volume water absorption, compressive strength and thermal conductivity of the corresponding nano-foam concrete and reinforced thermal insulation wallboard products , the dry shrinkage rate is 351kg / m 3 , 3.5%, 1.70MPa, 0.0589W / m.k. Referring to the damping test method of nanocomposite products in Chinese patent ZL20081006411...

Embodiment 3

[0051] The preparation process and structure of nano-foam concrete and reinforced thermal insulation wallboard products are the same as in Example 1. The difference is: the foaming agent used is modified tea saponin FP-5A, the superplasticizer is aliphatic hydroxysulfonate condensate superplasticizer, and the nano wave absorbing agent is graphene oxide GO with a diameter of 500nm. The waterproofing agent used is calcium stearate, and the cement used is P.O.525R early-strength ordinary Portland cement.

[0052] Respectively refer to GB / T11969-2008 "Autoclaved Air-entrained Concrete Performance Test Method", GB / T17671-1999 "Cement Mortar Strength Test Method", GB / T10294-2008 "Steady-state Thermal Resistance of Thermal Insulation Materials and Determination and Protection of Related Properties Hot plate method, JC / T603-2004 "Cement mortar dry shrinkage test method" to measure the dry density, volume water absorption, compressive strength and thermal conductivity of the correspond...

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Abstract

The invention belongs to the field of building materials and construction technologies and relates to nano foamed concrete, a reinforced insulation wallboard and a preparation method of the reinforced insulation wallboard. The nano foamed concrete disclosed by the invention is prepared from the following ingredients in parts by weight: 100 parts of cement, 0.1-5 parts of desulfurized oil coke ash residue, 0.012 part of waterproofing agent, 10-30 parts of fly ash, 0.1-6 parts of superplasticizer, 50-200 parts of water, 1-20 parts of foamer and 0.01-5 parts of nano wave absorbing agent. Thus, when a wallboard product, prepared by embedding steel wire meshes in the nano foamed concrete disclosed by the invention, is applied nearby airports, docks, navigation marks, television stations and receiving stations or applied to concrete-based retaining walls of electromagnetic wave interference preventing scientific research departments, precise instrument plants and information leakage prevention high-grade buildings of national confidential units and the like, the most basic physical, mechanical, heat preservation and heat insulation properties are guaranteed on one hand, and the wallboard product has the capabilities of lowering noise and insulating sound on the other hand.

Description

technical field [0001] The invention belongs to the technical field of building materials and construction, and relates to a nano-foam concrete, a reinforced thermal insulation wallboard and a production preparation method. Background technique [0002] The foam concrete developed in recent years provides new options for energy-saving and environment-friendly wall materials, such as the Chinese patent announced on August 5, 2009, the publication number is CN201284546, which discloses a concrete layer that can be directly arranged between floors. Foam concrete sound insulation and thermal insulation cushion on top. As of May 23, 2012 [0003] The announced Chinese patent, with the notification number CN202227526, discloses a lightweight high-strength foamed cement building wall that can fill or separate frames in house construction. [0004] Some scholars try to add active admixtures, microscopic fibers (glass fiber, carbon fiber, [0005] Polyester fibers, polypropylene f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06E04C2/288
Inventor 罗健林李秋义赵铁军高嵩张帅魏雪
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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