ITRM20110542A1 - PREFABRICATED CONCRETE ECO PANEL WITH THERMAL AND ACOUSTIC INSULATION FUNCTIONS - Google Patents

Description

PREFABRICATED CONCRETE ECOPANEL WITH THERMAL AND ACOUSTIC INSULATION FUNCTIONS.

The present invention relates to a prefabricated structural panel of the â € œsandwichâ € type, consisting of two layers of lightened and innovative conglomerates with structural, thermal and acoustic insulation functions and a layer of polymeric honeycomb elements with thermal and lightening functions, all connected and collaborating with each other and with very low specific weight.

Historical typological framework. In general, prefabricated infill panels of the so-called `` sandwich '' type with `` thermal break '' consist of 2 layers of traditional concrete with natural aggregates with ordinary steel reinforcement and with a specific weight of

about 2400 ÷ 2500 Kg / mc; by a layer of insulation consisting of

polystyrene (8-12 cm); a layer of high polystyrene insulation

density (5-6 cm), with specific weights of 10Ã · 50 Kg / mc; a layer of

completely separate and layered external finishing concrete.

In some types there are stiffening ribs in

reinforced concrete that connect the first two layers of concrete, _ -with an inevitable thermal bridge; in other types more aimed at cutting

thermal, there are connectors in polymers of limited conductivity

thermal with the function of stitching between the finishing layer and the layer

internal bearing in concrete. -The object of the industrial invention so called:

PREFABRICATED CONCRETE ECOPANEL WITH THERMAL AND ACOUSTIC INSULATION FUNCTIONS

it has structural, thermal and acoustic insulation functions with

very low specific weight and thickness.

The invention is illustrated in the attached drawing (figure 1: view

axonometry of the panel, figure 2: section, figure 3: plan of the

intermediate layer with alveolar elements).

The panel of height H, width B and thickness s, is made up of

(Figure 1):

1. an outer layer of lightweight concrete, with weight

specific variable from 1200 ÷ 1900 kg / m;

2. a lightening thermal insulating intermediate layer consisting of a system of polymeric cellular elements (figure 3) with capacity for compressive, tensile and shear strength; 3. an external layer in normal or lightened concrete with a specific weight ranging from 1600 ÷ 2400 kg / m;

4. reinforcement reinforcement of the concrete layers in FRP mesh fabrics;

5. Sewing reinforcements between layers 1 and 3 with FRP reinforcements.

Layers 1 and 3 (figure 2) of concrete - for the realization of the panel can be chosen in any combination among those listed below:

1. ordinary concrete with natural aggregate,

2. concrete with aggregate from demolition and recycling of concrete, reinforced concrete and prestressed reinforced concrete structures in various percentages,

3. concrete with aggregate comprising recycled rubber in various percentages,

4. lightweight structural concrete

The structural resistance capacity of the sandwich panel is comparable with those with traditional concrete and within the safety criteria defined by the Codes in force.

Thermal insulation is achieved with a clear separation between the three parts through the use of innovative conglomerates with thermal conductivity lower than the traditional one and with the special intermediate layer of alveolar polymeric elements.

The panel has a strong originality compared to the systems referred to in the state of the art as it is made of environmentally friendly materials with inert materials from recycling such as: a) aggregates from concrete b) aggregates from tires c) aggregates in expanded clay. The originalities are: the systematic use of recycled materials, the total disappearance of construction steel, the polymeric material with a system of alveoli which constitutes the insulating layer and the succession and arrangement of the completely connected and collaborating layers. The ECOPANELLO has high resistant capacities, is very light and has high thermal resistance.

Claims (1)

CLAIMS 1. Prefabricated concrete sandwich panel consisting of three layers connected to each other: two external layers in various concretes, reinforced with FRP mesh reinforcement, an internal thermal insulating layer consisting of honeycomb-type honeycomb elements; connections between FRP layers; 2. Prefabricated concrete sandwich panel according to claim 1 in which the two external layers can be: of concrete with aggregates obtainable from demolition, from the recycling of concrete structures, reinforced concrete. and zip code in various percentages, of concrete with aggregate comprising recycled rubber in various percentages, of lightweight structural concrete, of concrete with natural aggregate, in any combination; 3. Prefabricated concrete sandwich panel according to claim 1 wherein the internal layer with structural and thermal insulation function is made of a light honeycomb material with cells of any shape and size; 4. Prefabricated concrete sandwich panel according to claim 1 wherein the connections between the layers and the reinforcements of the conglomerates are FRP, aramid, basalt, mesh steel, and rod reinforcements; 5. Prefabricated concrete panel in which the inner layer according to claim 3 is selected from the following materials: polymeric, expanded polyurethane, kraft paper and aramid paper, optionally also impregnated with resins.