JP4516820B2 - Civil engineering structure and exterior construction member for civil engineering structure - Google Patents

Description

  The present invention relates to a civil engineering structure and an exterior construction member for civil engineering structure, and more particularly to a civil engineering structure and a civil engineering structure exterior construction member having both light weight and heat resistance.

  In addition to building construction materials (main construction materials) made of foamed resin blocks for construction in poor environments such as in soft ground areas and places with heavy traffic, reducing labor, shortening construction time, etc. As the foamed resin building member constituting the outer surface thereof, a cement cured material layer formed on at least one surface of the foamed resin block (exterior building member) is positioned on the outer surface. A civil engineering structure is known in which the strength against heat from the outside and the strength against foreign matters such as gravel are increased by arranging in this manner (for example, Patent Document 1).

Utility Model Registration No. 2607192

  However, in the case of the civil engineering structure (roads and platforms) disclosed in Patent Document 1, heat from a small train fire or heat from a nearby open fire, bonfire, etc. adversely affects the foamed resin block. In order to sufficiently block the material, the hardened cement layer must have a considerable thickness, the weight of the exterior construction member increases, and not only does it require transportation labor but also construction labor, There is also a risk of peeling off from the foamed resin block of the layer.

  The present invention has been made in view of the above circumstances, and the thickness of the hardened cement layer is reduced to a level that satisfies the strength against foreign matter such as gravel without increasing the thickness of the hardened cement layer. Even if it does, it aims at providing the civil engineering structure and the exterior construction member for civil engineering structures which can fully prevent melting of a foaming resin block from external heat.

In order to achieve the above object, in the civil engineering structure according to claim 1, an exterior construction member formed by stacking main construction members made of foamed resin blocks and forming a cement hardened material layer on at least one surface of the foamed resin blocks. In a civil engineering structure that is constructed on the outside of the stacked main construction member and with the cement hardened material layer being the outer surface, between the cement hardened material layer of the exterior construction member and the foamed resin block In addition, a heat-resistant heat insulating material having the same size as the surface of the foamed resin block is interposed, and at least the upper and lower peripheral edges of the hardened cement layer are positioned inward of the upper and lower peripheral edges of the heat-resistant heat insulating material. In the state where the upper and lower peripheral edges have notches, and the civil engineering structure is constructed, at least in the recesses formed between the exterior construction members by the notches Characterized in that filled with-ring material.

Moreover, in the civil engineering structure of claim 2, in the invention of claim 1, the heat-resistant heat insulating material is a thermosetting resin foam or a thermoplastic resin foam, and 100 ° C by a hot air circulation oven, It is characterized in that the dimensional change in heating in a 5-hour heat resistance test is within ± 2%.

Further, in the exterior building members for civil engineering structure of claim 3, the at least one surface of the foamed resin block, is interposed same size heat resistant insulation with the surface to form a cement cured layer, the cement It is characterized in that at least the upper and lower peripheral edges of the cured product layer are formed inwardly of the upper and lower peripheral edges of the heat-resistant heat insulating material and have notches on the upper and lower peripheral edges.

Moreover, in the exterior construction member for a civil engineering structure according to claim 4, in the invention of claim 3, the heat-resistant heat insulating material is a thermosetting resin foam or a thermoplastic resin foam, and a hot air circulation oven The heat dimensional change in the heat resistance test at 100 ° C. for 5 hours is within ± 2%.

According to the first aspect of the present invention, since the heat transfer to the foamed resin block is blocked by the heat-resistant heat insulating material, the structure is sufficiently heat-resistant, and the hardened cement layer Can be made as thin as possible within a range in which the strength against foreign matter such as gravel is secured, and the weight of the exterior construction member can be reduced, so that a lighter structure with good workability can be provided.
Moreover, according to this invention of Claim 1 above, in the state which piled up the exterior construction member, destruction of the cement hardened material layer by the amount of distortions of the cement hardened material layer with respect to the load from an upper surface and a foamed resin block differing Moreover, since the heat-resistant heat insulating material is filled between the recesses formed by the notches of the respective exterior construction members, that is, between the exterior construction members where the cement hardened material layer does not exist, The structure has sufficient heat resistance.

Further, according to the present invention of claim 3 described above, since the heat transfer to the foamed resin block is blocked by the heat-resistant heat insulating material, the exterior construction member for the civil engineering structure has sufficient heat resistance. In addition, since the hardened cement layer can be made as thin as possible within a range in which the strength against foreign matter such as gravel is ensured, a lighter exterior construction member for a civil engineering structure can be provided.
Further, according to the present invention of claim 3, the destruction of the hardened cement layer due to the difference in strain between the hardened cement layer and the foamed resin block with respect to the load from the upper surface when stacked is effectively prevented. An exterior construction member for a civil engineering structure that can be provided can be provided.

Hereinafter, embodiments of the civil engineering structure and the civil engineering structure exterior construction member according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing a railway platform as an embodiment of a civil engineering structure according to the present invention, and FIG. 2 is an example of an exterior construction member for a civil engineering structure according to the present invention that constitutes the outer surface thereof. 3 is a perspective view showing the embodiment, FIG. 3 is a partial perspective view showing a state in which the exterior construction members shown in FIG. 2 are stacked, and FIG. 4 is a cross-sectional view of a portion along line AA in FIG. is there.

  The platform 1 shown in FIG. 1 is configured by stacking main construction members 2 to form an internal structure, and disposing an exterior construction member 3 on the outside, that is, a portion forming an outer surface.

  The main construction member 2 is constituted by a foamed resin block 4 formed in a rectangular parallelepiped shape. On the other hand, as shown in FIG. 2, the exterior construction member 3 has a cement hardened material layer 7 formed on one surface of the foamed resin block 5 via a heat-resistant heat insulating material 6 having the same size as the surface. The periphery of the hardened cement layer 7 is formed so as to be located slightly inward from the periphery of the heat-resistant heat insulating material 6 and has a notch 8 at the periphery.

The foamed resin block 4 of the main construction member 3 and the foamed resin block 5 of the exterior construction member 3 can be formed of the same resin, for example, polystyrene, polyethylene, polypropylene, polyurethane, polyvinyl chloride, etc. Although it can be formed by foaming resin, polystyrene is most preferable because it is inexpensive and has high strength even at low density. The foamed resin blocks 4 and 5 usually have a density of 0.01 to 0.05 g / cm ³ . Although it does not specifically limit as a magnitude | size, For example, length 100-200 cm, width 50-150 cm, and height 30-100 cm are good. The foams of the foamed resin blocks 4 and 5 preferably have independent bubbles in consideration of water resistance, strength and the like. In the present invention, from the viewpoint of using a heat-resistant heat insulating material described later, the heat resistance of the resin constituting the foamed resin block 5 does not have to be so high, and the Vicat softening point (as described later) is 80. If it is -110 degreeC, Preferably it is 90-107 degreeC, it is advantageous also in terms of cost.

  The cement hardened material layer 7 provided on the surface of the exterior construction member 3 can be formed of various hydraulic cements such as concrete and mortar. Examples of hydraulic cements include ordinary Portland cement, medium-heated Portland cement, early-strength Portland cement, low sulfate Portland cement, white Portland cement, Portland cement, hydraulic lime, Roman cement, natural cement, alumina cement, etc. , Blast furnace cement, silica cement, expanded cement, and colored cement. Among these, portland cement, hydraulic lime, natural cement, blast furnace cement, expanded cement, and colored cement are preferably used.

In addition, various aggregates, reinforcing materials, weight reducing materials, water glass, and the like can be added to the cement. Aggregates include ordinary aggregates such as cinnabar and silica foam, and artificial lightweight aggregates such as expanded clay, pearlite, and expanded slag. Examples of the reinforcing material include various organic and inorganic fibers such as slag fiber, carbon fiber, nylon, and polyester fiber. Examples of the weight reducing material include foamed resin particles having a density of 0.008 to 0.1 g / cm ³ and a particle size of 2 to 15 mm, such as polyethylene, polyvinyl chloride, and polypropylene.

  In particular, when the foamed resin particles are mixed into the hardened cement layer 7, it is lightweight and has excellent heat insulation properties. For example, when constructing asphalt as a surface layer material when constructing a railway platform 1, The foamed resin particles present on the surface of the hardened cement layer 7 are melted by the heated asphalt. As a result, the asphalt enters the holes of the melted particles, and the adhesion between the asphalt and the hardened cement layer 7 is improved. It will be excellent. The mixing ratio of the foamed resin particles is suitably 0.2 to 30 parts by weight with respect to 100 parts by weight of cement. Moreover, as thickness of the said cement hardened material layer 7, 10-30 mm is suitable from viewpoints, such as heat resistance, intensity | strength, and lightweight property.

  Moreover, as the heat-resistant heat insulating material 6 interposed between the foamed resin block 5 and the cement cured material layer 7 of the exterior construction member 3, a thermosetting resin foam or a thermoplastic resin foam can be used. As a thermosetting resin foam, a polyurethane resin foam, a phenol resin foam, a melamine resin foam, a silicon resin foam, etc. can be used, for example. As the thermoplastic resin foam, for example, a thermoplastic resin having a Vicat softening point (measuring conditions: load 1 kgf, heating rate 120 ° C./min) of at least 120 ° C., preferably at least 130 ° C., more preferably at least 140 ° C. 40 to 95% by weight, preferably 60 to 90% by weight of an inorganic substance in a foam made of a resin (eg, polypropylene resin, polycarbonate resin, etc.) or a thermoplastic resin (eg, vinyl chloride resin, polyethylene resin, etc.) %, Or a foam of a crosslinked thermoplastic resin (for example, vinyl chloride resin, polyethylene resin, etc.) can be suitably used.

  Examples of inorganic substances contained in the thermoplastic resin foam include carbonates such as calcium, magnesium, aluminum, titanium, iron, and zinc, sulfates, silicates, phosphates, borates, oxides, Examples thereof include hydroxides, or hydrates thereof, talc, kaolin, mica, bentonite, clay, etc. Among them, metal hydroxides such as aluminum hydroxide and magnesium hydroxide having a large effect of improving flame retardancy Is preferred.

The heat resistance of the heat-resistant heat insulating material 6 is preferably 100 ° C. or higher, and the heat insulating performance is preferably a thermal conductivity of 0.1 W / (m · K) or less, 0.07 W / It is more preferably (m · K) or less, and further preferably 0.06 W / (m · K) or less. The thermal conductivity is preferably as small as possible, but in general, it is difficult to produce a product having a thermal conductivity lower than 0.001 W / (m · K), and the smaller the thermal conductivity, the higher the cost. m · K) or more, preferably 0.02 W / (m · K) or more is used. A smaller thermal conductivity is preferable because the thickness can be made thinner and more compact. Moreover, although the thickness of the heat-resistant heat insulating material 6 changes also with heat insulation performance, it is preferable that it is 5 mm or more, Furthermore, 12-60 mm is more preferable, 15-35 mm is the most preferable. Usually, the thermal resistance is at least 0.1 m ² · K / W, preferably at least 0.3 m ² · K / W, more preferably 0.5 m ² · K / W. Is set to thickness.
“Heat resistance of 100 ° C. or higher” means that a 100 mm × 100 mm × 10 mm test piece is allowed to stand for 24 hours at 25 ° C. and 50% RH, and then its dimensions are measured. In a hot air circulating oven (Tabaie specs), heated for 5 hours, taken out and left for 24 hours at 25 ° C. and 50% RH, and then measured again (this test is referred to as heat resistance hereinafter) In the test), the dimension after heating is within ± 2% of the dimension before heating. Moreover, the numerical value of the said heat insulation performance uses the thermal conductivity measuring apparatus "Auto-Lambda HC-73 type | mold" of Hidehiro Seiki Co., Ltd. according to description of 4.7 of JIS A 9511 (1994), and is a flat plate heat flow meter method. It is a numerical value when measured based on [two heat flow meter systems, average temperature 20 ° C. (high heat plate setting 35 ° C., low heat plate setting 5 ° C.)].

  In order to produce the exterior construction member 3, the foamed foamed resin block 5 is placed in a mold, and a plate-like heat-resistant heat insulating material 6 is stacked thereon via an adhesive, and a desired shape is formed thereon. Then, uncured cement mortar may be poured so that the cured cement mortar is cured and cured to form the hardened cement layer 7. Conversely, a foamed resin block 5 having a plate-like heat-resistant heat insulating material 6 bonded thereto in advance is placed on a cement mortar placed in a predetermined amount in the mold, and cured and cured to harden the cement layer 7. May be formed. Alternatively, the foamed resin block 5 and the hardened cement layer 7 may be separately manufactured, and they may be integrated via the plate-like heat-resistant heat insulating material 6 using an adhesive.

  Further, in order to construct the platform 1 shown in FIG. 1 using the main construction member 2 and the exterior construction member 3, the sand and gravel are spread after sand or gravel, and then squeezed from above. The foundation 9 solidified by the work is formed, the main construction member 2 is stacked on the foundation 9, and the exterior construction member 3 is located on the surface forming the outer surface, and the hardened cement layer 7 is located on the surface. The floor member 10 is formed of asphalt, concrete, tile, or the like on the upper surface of the structure.

  Then, as shown in FIG. 4, the recess 11 formed between the exterior construction members 3 and 3 is filled with the backup material 12 by the notch 8 of the exterior construction member 3, and the sealing material 13 is formed outside thereof. And the platform 1 is constructed.

  As the backup material 12, a heat-resistant heat insulating material that is more heat resistant than the foamed resin block 5 and has a heat insulating property can be used, for example, between the above-mentioned foamed resin block 5 and the cement cured material layer 7. The heat resistant heat insulating material illustrated as the heat resistant heat insulating material 6 interposed in can be used suitably.

  Examples of the sealing material 13 include silicon rubber, asphalt elastite, asphalt-impregnated nonwoven fabric, and elastic mortar. Among these, elastic mortar is preferable.

  As mentioned above, although the embodiment of the civil engineering structure and the exterior construction member for civil engineering structure according to the present invention has been described, the present invention is not limited to the embodiment described above, and is within the scope of the claims. Naturally, various modifications and changes can be made within the scope of the technical idea of the present invention described.

For example, in the above embodiment, an example in which the civil engineering structure of the present invention is applied to the railway platform 1 has been shown. However, as shown in FIG. 5, for example, as shown in FIG. It can be applied, or can be applied to other civil structures such as a double wall lightweight fill method.
In FIG. 5, the same members and parts as those in FIG.

  Moreover, in the said embodiment, although demonstrated about what has arrange | positioned the heat resistant heat insulating material 6 and the cement hardened material layer 7 only to one surface (front surface) of the foamed resin block 5 as the exterior construction member 3, It is necessary. Accordingly, for example, in the case of the exterior construction member disposed at the corner of the platform, the heat-resistant heat insulating material and the hardened cement layer are disposed on the front surface and the side surface of the foamed resin block.

Furthermore, in the said embodiment, although the cement cured material layer 7 grade | etc., Was formed in the planar surface of the foamed resin block 5, as shown in FIG. 6, at least 1 groove | channel 20 is formed in the surface of the foamed resin block 5. As shown in FIG. It is preferable to provide it. The shape of the groove 20 may be either a dovetail groove or a concave shape. A reverse taper shape is preferable. The depth of the groove 20 is 10 to 80 mm, preferably 20 to 50 mm. Although the heat resistant heat insulating material 6 may not be provided at the bottom of the groove 20 (the groove bottom may pass through the heat resistant heat insulating material 6 and be within the foamed resin block 5), the cement hardened material layer 7 is thin. In this case, it is preferable to provide the bottom of the groove 20 in the heat-resistant heat insulating material 6 as shown in FIG.
In addition, the cement mortar which forms the cement hardened material layer 7 flows in the groove | channel 20, the support | pillar part 7a integral with the cement hardened material layer 7 is formed, and the attachment strength of the cement hardened material layer 7 improves. When a recess remains in the groove 20, it is preferable to fill the recess with a heat-resistant heat insulating material.

Example 1
Adhesive [resin mortar (cement: acrylic emulsion: water) on one side (1m x 0.5m) of expanded polystyrene block (JST Co., Ltd .: Styrodia civil engineering block D20, dimensions: 2m x 1m x 0.5m) = 100: 50: 30 parts)] and a plate-like heat-resistant heat insulating material having a thickness of 25 mm [manufactured by GS Corporation: Mirranen (inorganic powder of about 20% by weight of vinyl chloride resin, calcium carbonate and talc) Foam with an apparent density of 83 kg / m ³ comprising about 80% by weight of the body, with a thermal conductivity of 0.039 W / (m · K), and the dimension after heating based on the heat resistance test is −0.5 of the dimension before heating. %).)] Was applied and dried, and then the adhesive [resin mortar (cement: acrylic emulsion: water = 100: 50: 30 parts)] was applied to the surface of the heat-resistant heat insulating material to obtain a thickness. 20mm lightweight mortar plate (Fujikawa Building Materials Co., Ltd.: Rasumoru) crucifixion, and was made an exterior building member.

  As shown in FIG. 8, the manufactured exterior construction members are stacked so that their lightweight mortar boards construct a wall surface, and a backup material (manufactured by JSP Co., Ltd .: Miraffenen is used so that the joint portion has a thickness of 10 mm. A structure having the structure of the present invention was constructed by filling the outer periphery thereof with a sealing material (silicone sealing material for construction).

As shown in FIG. 8, the constructed structure was subjected to a bonfire (burned so that the height of the flame increased to about 1 m) for 30 minutes at a position 500 mm away from the wall surface. Surface temperature (T1) of the plate, boundary temperature (T2) between the lightweight mortar plate and the heat-resistant heat insulating material, boundary temperature (T3) between the heat-resistant heat insulating material and the expanded polystyrene block, and the surface temperature of the sealing material at the joint (T4), the boundary temperature (T5) between the sealing material and the backup material, and the boundary temperature (T6) between the backup material and the heat-resistant heat insulating material were measured. Moreover, the external appearance of the structure was observed visually.
The measurement results and observation results are shown in Table 1 as Example 1.

-Example 2-
Except that the thickness of the heat-resistant heat insulating material (manufactured by JSP Co., Ltd .: Miraffenen) interposed between the expanded polystyrene block and the lightweight mortar board is changed from 25 mm of Example 1 to 10 mm, the above example The same exterior construction member as 1 was produced, and the same structure as in Example 1 was constructed using the exterior construction member. However, the joint portion was filled with the same backup material as in Example 1 so as to have a thickness of 5 mm.
External heat was applied to this structure in the same manner as in Example 1, and the temperature at the same site as in Example 1 was measured. Moreover, the external appearance of the structure was observed visually.
The measurement results and observation results are also shown in Table 1 as Example 2.

Example 3
Adhesive (resin mortar) with a lightweight mortar plate having the same thickness as in Example 1 and a heat-resistant heat insulating material having the same thickness as in Example 1 on the surface of the expanded polystyrene block of Example 1 above. A structure in which the exterior construction member is prepared by using the exterior construction member, and the lightweight mortar plates are stacked so as to construct the wall surface, and the joint portion is filled with only the same sealing material as in the first embodiment. Built.
External heat is applied to this structure in the same manner as in Example 1, and the surface temperature (T1) of the lightweight mortar plate, the boundary temperature (T2) between the lightweight mortar plate and the heat-resistant heat insulating material, and heat resistance. The boundary temperature (T3) between the heat insulating material and the expanded polystyrene block, the surface temperature (T4) of the sealing material at the joint, and the boundary temperature (T6) between the sealing material and the expanded polystyrene block were measured. Moreover, the external appearance of the structure was observed visually.
The measurement results and observation results are also shown in Table 1 as Example 3.

-Comparative Example 1-
A lightweight mortar plate having a thickness of 20 mm, which is the same as that of Example 1, is attached to the surface of the expanded polystyrene block of Example 1 directly with an adhesive (resin mortar) without interposing a heat-resistant heat insulating material. And using the exterior construction member, the lightweight mortar plates are stacked so as to construct a wall surface, and the joint portion is filled with only the same sealing material as in the first embodiment, and has a conventional structure. Built the body.
External heat is applied to this structure in the same manner as in Example 1 above, the surface temperature (T1) of the lightweight mortar plate in the meantime, the boundary temperature (T3) between the lightweight mortar plate and the expanded polystyrene block, and at the joint The surface temperature (T4) of the sealing material and the boundary temperature (T6) between the sealing material and the expanded polystyrene block were measured. Moreover, the external appearance of the structure was observed visually.
The measurement results and observation results are also shown in Table 1 as Comparative Example 1.

  Expanded polystyrene begins to deform and melt gradually when it exceeds 80 ° C, and when it exceeds 92 ° C, the degree of deformation and melting increases. Therefore, when a polystyrene foam block is used as the foam resin block of the exterior construction member, Even when external heat is applied, the surface temperature of the expanded polystyrene block must be suppressed to 92 ° C. or lower, preferably 80 ° C. or lower.

  As a result of interposing a 25 mm heat-resistant heat insulating material (manufactured by JSP Co., Ltd .: Mirranen) between the expanded polystyrene block and the lightweight mortar plate, the surface temperature on the lightweight mortar plate side of the expanded polystyrene block is from Example 1 above. Since it rose only to 70 degreeC, it turned out that if it is the external heat of a bonfire grade, a foamed polystyrene block can fully be protected from this external heat.

Further, Example 2 shows an example in which a heat-resistant heat insulating material having a thickness of 10 mm (manufactured by JSP Co., Ltd .: Mirranen) is interposed between the expanded polystyrene block and the lightweight mortar board. As a result of the thickness of the heat-resistant heat insulating material being thin and inferior in heat insulating performance to that of Example 1, melting was observed on a part of the surface of the expanded polystyrene block. Although this result is inferior to Example 1, it shows a better result than Comparative Example 1, and it was found that if the external heat is about the level of a bonfire, the expanded polystyrene block can be protected from the external heat to some extent.
Moreover, from the results of Examples 1 and 2, the heat resistance of the heat-resistant heat insulating material is 0.5 m ² · K / W or more in order to more reliably protect the surface of the expanded polystyrene block from the external heat of the bonfire level. It can be said that it is preferable.

  Example 3 shows an example in which the backup material was not used in Example 1. Due to the presence of the heat-resistant heat insulating material, the surface temperature on the lightweight mortar plate side of the expanded polystyrene block increased only to 70 ° C. It was found that can be protected. However, since the backup material was not used, the surface of the expanded polystyrene block immediately below the sealing material at the joint portion rose to 100 ° C. Since there was a large temperature rise only in a limited part directly under the sealing material, there was no change in the appearance on the light weight mortar board side, which is considered to be an acceptable range. However, in order to ensure higher safety, it is preferable to use a backup material as shown in the first embodiment. The results of Example 1 and Example 3 show that there is no lightweight mortar plate in the joint part, and heat is easily transmitted because there is a gap between the members, but the joint part has a heat resistance of about 10 mm thick. It is shown that if a heat-insulating material (manufactured by JSP Co., Ltd .: Miraffenen) is filled, a heat shielding effect higher than that of a lightweight mortar plate can be expected, and a structure having sufficient heat resistance at the joint can be constructed.

On the other hand, Comparative Example 1 shows an example in which an exterior construction member is formed by directly bonding a lightweight mortar plate and a foamed polystyrene block without interposing a heat-resistant heat insulating material. As a result of the absence of the heat-resistant heat insulating material, the surface temperature on the light mortar plate side of the expanded polystyrene block increased to 100 ° C., so that the expanded polystyrene block melted greatly and the light weight mortar plate floated (peeled).

It is sectional drawing which showed the platform for railroads which is one Embodiment of the civil engineering structure which concerns on this invention. In the structure shown in FIG. 1, it is the perspective view which showed one Embodiment of the exterior construction member for civil engineering structures based on this invention which comprises the outer surface. It is the fragmentary perspective view which showed the state which piled up the exterior construction member shown in FIG. It is sectional drawing of the part which follows the AA line in FIG. It is sectional drawing which showed the one-sided vertical wall of the wide embankment of the lightweight embankment method which is other embodiment of the civil engineering structure which concerns on this invention. It is the perspective view which showed other embodiment of the exterior construction member for civil engineering structures based on this invention. It is the perspective view which showed other embodiment of the exterior construction member for civil engineering structures based on this invention. It is the side view which showed notionally the test condition in an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Platform 2 Main construction member 3 Exterior construction member 4, 5 Foamed resin block 6 Heat-resistant heat insulating material 7 Cement hardened material layer 7a Strut part 8 Notch part 9 Surface layer material 10 Floor member 11 Recessed part 12 Backup material 13 Sealing material 20 Groove

Claims (4)

A main construction member made of a foamed resin block is stacked, and an exterior construction member formed by forming a cement hardened material layer on at least one surface of the foamed resin block is disposed outside the stacked main building member and a cement hardened material layer. In a civil structure that is arranged and constructed so as to be an outer surface, a heat-resistant heat insulating material having the same size as the surface of the foamed resin block between the cement cured material layer of the exterior construction member and the foamed resin block And at least the upper and lower peripheral edges of the hardened cement layer are positioned inward of the upper and lower peripheral edges of the heat-resistant heat insulating material, and have a notch in the upper and lower peripheral edges, and the civil engineering structure A civil engineering structure characterized in that, in a constructed state, at least a sealing material is filled in a recess formed between the exterior construction members by the notch . The heat-resistant heat insulating material is a thermosetting resin foam or a thermoplastic resin foam, and a change in heating dimension in a heat resistance test at 100 ° C. for 5 hours by a hot-air circulating oven is within ± 2%. The civil engineering structure according to claim 1, wherein: A cement hardened material layer is formed on at least one surface of the foamed resin block by interposing a heat resistant heat insulating material having the same size as the surface, and at least the upper and lower edges of the cement hardened material layer are formed on the heat resistant heat insulating material. An exterior construction member for a civil engineering structure, characterized in that the outer construction member is formed so as to be located inward from the upper and lower peripheral edges and has a notch portion in the upper and lower peripheral edges . The heat-resistant heat insulating material is a thermosetting resin foam or a thermoplastic resin foam, and a change in heating dimension in a heat resistance test at 100 ° C. for 5 hours by a hot-air circulating oven is within ± 2%. The exterior construction member for a civil engineering structure according to claim 3, wherein:

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