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Structural insulation integrated precast concrete external wall panel and preparation process

A prefabricated concrete and structural thermal insulation technology, applied in thermal insulation, manufacturing tools, building components, etc., can solve the problems of low acceptance by developers, long prefabrication time, and high cost, shortening the demoulding time, cost saving, and reducing The effect of self-weight

Pending Publication Date: 2021-06-22
SHANGHAI RES INST OF BUILDING SCI CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the technical solution disclosed in the above-mentioned patent can realize some shortcomings of the prefabricated concrete sandwich insulation wallboard system, the insulation board and the protective layer still need to be connected by adhesive or direct anchorage; the insulation structure integrated wallboard still needs to be embedded The parts are fixedly installed on the cast-in-place reinforced concrete layer; the prefabrication time is long, usually about a week; the cost is high, and the developer’s acceptance is not high

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  • Structural insulation integrated precast concrete external wall panel and preparation process

Examples

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Effect test

Embodiment 1

[0044] see figure 1 , figure 1 It is a schematic structural diagram of a prefabricated concrete exterior wall panel with integrated structure and thermal insulation provided in Embodiment 1 of the present invention.

[0045] A prefabricated concrete exterior wall panel with integrated structure and thermal insulation, comprising a concrete wall 1 arranged adjacent to each other in sequence, a thermal insulation panel 2 with high tensile strength and high bonding strength, high early strength and high thermal insulation panel 2 Mortar facing protection layer 3 with bonding strength;

[0046] One side of the insulation board 2 is self-bonded to the mortar facing protective layer 3 , and the other side is self-bonded to the concrete wall 1 .

[0047] Specifically, the insulation board 2 is polystyrene modified polystyrene board, which has good compatibility with cement-based materials, and its main performance indicators are as follows: compressive strength ≥ 0.3MPa, dry appare...

Embodiment 2

[0054] Different from Embodiment 1, this embodiment provides a prefabricated concrete exterior wall panel with integrated structure and thermal insulation, which also includes a plurality of connectors, and the thermal insulation board 2 and the concrete wall 1 are assisted by a plurality of connectors. Connection, the connecting piece is one or more of nylon plastic anchor bolts, stainless steel anchor bolts or anti-corrosion treated metal anchor bolts.

[0055] Among them, the number of connectors arranged per square meter of the wall is 4, the anchorage depth of the connectors in the concrete wall 1 is 30mm, and the standard value of the tensile bearing capacity of the connectors is 0.6kN.

[0056] On-site operations show that the tensile bonding strength of the prefabricated concrete exterior wall panels provided by Embodiment 1 and Embodiment 2, the mortar facing protective layer and the insulation layer can reach 0.20~0.30MPa, which ensures reliable bonding between layers...

Embodiment 3

[0058] A preparation process for prefabricated concrete exterior wall panels with integrated structural insulation, comprising:

[0059] Step 1. After setting up the formwork, fix the anti-corrosion treated steel wire mesh or alkali-resistant glass fiber mesh cloth in the formwork, then pour cement mortar and level it with vibration to obtain the mortar facing protective layer 3, wherein the mortar facing protection The 28d tensile bonding strength of layer 3 is greater than 0.2MPa, and the 1d compressive strength can reach more than 10MPa, which meets the operation requirements of 1d formwork removal of precast concrete exterior wall panels, and can realize decorative functions at the same time.

[0060] Step 2. Lay the thermal insulation board 2 above the mortar facing protective layer 3. The thermal insulation board 2 is self-bonded to the mortar facing protective layer 3. The thermal insulation board 2 is a silicon graphene modified polystyrene board, and its performance in...

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Abstract

The invention discloses a structural insulation integrated precast concrete external wall panel. The precast concrete external wall panel comprises a concrete wall, an insulation board with high tensile strength and high bonding strength and a mortar facing protective layer with high early strength and high bonding strength, wherein the concrete wall, the insulation board and the mortar facing protective layer are adjacently arranged in sequence, one side surface of the insulation board is self-bonded to the mortar facing protective layer, and the other side surface of the insulation board is self-bonded to the concrete wall. The invention further discloses a preparation process of the structural insulation integrated precast concrete external wall panel. The integrity of the insulation board and the bonding strength of the insulation board, concrete and the protective layer are effectively guaranteed through a reverse beating construction process. According to the structural insulation integrated precast concrete external wall panel, the insulation board and the mortar facing protective layer which are high in bonding strength are adopted, the insulation board and the protective layer do not need to be connected through adhesives or anchors through the reverse beating process, the insulation board and the concrete wall do not need to be fixed through embedded parts, the structure is stable, the preparation is easy, and the demolding time is short.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a prefabricated concrete exterior wall panel with integrated structure and heat preservation and a preparation process thereof. Background technique [0002] In recent years, with the frequent occurrence of quality problems such as cracking, hollowing or even falling off of the external thermal insulation system of external walls, the quality and safety of external thermal insulation systems of external walls have attracted widespread attention from the society and great attention from government management departments. On the other hand, with the development of green buildings and building industrialization, the requirements for the overall performance of the enclosure structure continue to increase, and the durability of the wall and insulation materials fails, the wall cracks and leaks, and the insulation layer hollows and falls off. If it happens, it will cau...

Claims

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Application Information

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IPC IPC(8): E04C2/288E04C2/30E04B1/80E04B1/38B28B1/04B28B1/08B28B1/29B28B11/24B28B13/02B28B19/00B28B23/02
CPCE04C2/288E04C2/30E04B1/80B28B1/045B28B1/08B28B1/29B28B11/245B28B13/02B28B19/0015B28B23/022E04B1/388
Inventor 赵立群陈宁王娟董庆广刘丙强朱卫民
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD
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