CN203022157U - Insulating cast-in-place area of insulating hollow sintered shale brickwork - Google Patents

Abstract

The utility model discloses an insulating cast-in-place area of an insulating hollow sintered shale brickwork. The brickwork comprises a novel insulating hollow sintered shale block build in the cast-in-place part of a main wall body. The main wall body is divided into an upper wall body and a lower wall body; novel insulating hollow sintered shale block layers are respectively built inside and outside an upper section of the lower wall body in the width direction; a through-length tensile connecting mesh plate is arranged between the two novel insulating hollow sintered shale block layers; two ends of two longitudinal ribs in the through-length tensile connecting mesh plate are respectively reliably connected with a constructional column; and horizontal tensile connecting ribs are respectively arranged at certain intervals between the two novel insulating hollow sintered shale block layers along the length direction of the main wall body. The cast-in-place area effectively prevents a thermal bridge effect between the cast-in-place area and the novel insulating hollow sintered shale blockwork and increases the average heat transfer coefficient of the wall body and ensures high efficiency and convenience in construction, thereby improving the heat insulation performance of the wall body, simultaneously effectively reducing shrinkage cracks, also effectively increasing the progress of works, and realizing continuous construction.

Description

A sintered shale thermal insulation hollow block wall thermal insulation cast-in-place belt

technical field

The utility model belongs to the technical field of building structures, and in particular relates to a heat-preservation cast-in-place belt for a wall, in particular to a heat-preservation cast-in-place belt for a sintered shale heat-preservation hollow block wall, which is used for an outer wall.

Background technique

The walls of the building are used to separate and maintain indoor and outdoor spaces, and at the same time have a load-bearing function, and the outer walls should also have good thermal insulation performance. At present, the total energy consumption of buildings in my country accounts for nearly 1/3 of the total energy consumption of the society, and about 80% of the heat consumption of buildings is mainly transmitted in or out through the heat transfer of the envelope structure, of which the external walls account for 23-24%. Therefore, reducing the energy consumption of buildings, especially the heat dissipation energy consumption of external walls, has become an important topic in my country's construction industry.

Existing external thermal insulation systems for external walls have the problems of easy falling off, short service life, poor safety, and difficult quality control. Materials such as aerated concrete and foamed concrete cannot be widely used due to their large shrinkage and easy wall cracking. Promote apps. At present, the new sintered shale thermal insulation hollow blocks are widely used. The new sintered shale thermal insulation hollow blocks use shale as the main raw material, and industrial waste such as fly ash, sawdust, steel slag as auxiliary materials, and are used in the production of raw materials. Added fly ash, sawdust, and pore-forming agent to fire. During the firing process in the kiln, there are voids or micropores that are not connected to each other in the block, and the existence of these voids or micropores can greatly reduce the weight of the block. The porosity of the new sintered shale thermal insulation hollow block is as high as 54%, so that the self-weight of the block does not exceed 8.5kN/m ³ , and the block provides good thermal insulation performance through its honeycomb network structure, realizing a single wall The materials meet the target requirement of building energy saving of 65%. The new sintered shale thermal insulation hollow block wall has good thermal insulation performance, and its self-insulation system can meet the current national building energy conservation standards. A series of advantages such as energy saving and emission reduction can significantly reduce the energy consumption of buildings.

However, in the process of building new sintered shale thermal insulation hollow block walls, how to add concrete cast-in-place belts has become a key factor affecting the large-scale promotion of this type of energy-saving structure. If the traditional concrete cast-in-place belt method is blindly applied, The following problems will arise: 1. The traditional cast-in-place concrete belt is suitable for the relatively mature masonry structure at present, but for the new-type sintered shale insulation hollow block structure with ultra-thin mortar joints, high porosity and obvious brittleness, the existing practice is aimed at Poor performance, difficult construction, poor collaborative work ability under seismic load, and insufficient structural guarantee performance; 2. The heat transfer coefficient of traditional concrete cast-in-place belts is significantly greater than that of the main wall, thus forming an obvious thermal bridge, which affects the thermal insulation of the wall performance, will greatly reduce the thermal insulation performance of sintered shale thermal insulation hollow block walls; 3. The traditional cast-in-place belt needs to be cured to a certain strength before continuing construction. The project progress is long and often causes shrinkage cracks in the wall.

Contents of the invention

Aiming at the disadvantages of the above-mentioned traditional cast-in-place belt, the purpose of this utility model is to provide a new type of sintered shale insulation hollow block wall insulation cast-in-place belt. The pouring belt and the new sintered shale thermal insulation hollow block wall can effectively avoid the thermal bridge effect, improve the average heat transfer coefficient of the wall, thereby improving the thermal insulation performance of the wall, and can effectively reduce shrinkage cracks and effectively speed up the project. Progress, to achieve continuous construction.

In order to achieve the above object, the utility model adopts the following technical solutions:

A new sintered shale thermal insulation hollow block wall thermal insulation cast-in-place belt, including a new sintered shale thermal insulation hollow block built on the main wall where the pouring belt is embodied, and the main wall is a new sintered shale thermal insulation hollow Block wall; the main wall is divided into an upper wall and a lower wall with the cast-in-place belt as a boundary, and a layer of new sintered shale insulation hollow is respectively built on the inner and outer sides of the upper section width direction of the lower wall. Blocks, new-type sintered shale thermal insulation hollow blocks built on the inner side of the upper section of the lower wall, the long sides of which are aligned with the inner side of the main wall, and new sintered shale thermal insulating hollow blocks built on the outer side of the upper section of the lower wall The large long side of the block is aligned with the outer side of the main wall; the above two layers of new-type sintered shale insulation hollow blocks are provided with a full-length tie mesh, and the two ends of the two longitudinal bars in the full-length tie mesh Reliably connected with the structural columns on both sides of the main wall; between the two layers of new-type sintered shale thermal insulation hollow blocks, there are horizontal tie bars at intervals along the length of the main wall, and the two ends of the transverse tie bars are There are hooks, and the two ends of the transverse tie bars are respectively hooked into the grooves set on the upper edge of the side wall of the new sintered shale thermal insulation hollow block through the hooks. The depth and width of the groove make the bend at the end of the transverse tie bars The hook fits in just right; concrete is poured between the two layers of new sintered shale insulating hollow blocks and the lower wall.

The utility model also includes the following other technical features:

The distribution bars in the full-length tie mesh are steel bars, and the distance between adjacent distribution bars is 300 mm.

The two layers of new-type sintered shale thermal insulation hollow blocks are provided with transverse tie bars every 1m along the length direction of the main wall.

The specification of the novel sintered shale thermal insulation hollow block is 490mm×80mm×58mm.

The groove is 10mm deep and 7mm wide, and the length of the hook of the transverse tie bar is 30mm.

The main wall is built with whole bricks, and the wall thickness is 365mm.

The structure of the cast-in-place belt of the utility model is simple and reasonable, and the inner and outer new sintered shale thermal insulation hollow blocks are used as the formwork for pouring concrete inside, which not only solves the problem of shutdown due to concrete maintenance during the construction process, but also solves the problem of the wall being cast-in-place. The problem of thermal bridges caused by the belt can effectively enhance the integrity and thermal insulation performance of the wall, and reduce the shrinkage cracks of the wall. In addition, the construction can be continued without waiting for the concrete to be cured to a certain strength, which shortens the construction period. The external new sintered shale thermal insulation hollow block can effectively prevent the thermal bridge of the concrete cast-in-place belt and improve the thermal insulation performance of the wall. The cast-in-place belt of the utility model is also suitable for other wall bodies.

Description of drawings

Fig. 1 is the vertical sectional view of the insulation cast-in-place belt of the present invention built on the main wall.

Fig. 2 is a transverse sectional view of the insulation cast-in-place belt of the utility model built on the main wall.

Fig. 3 is a schematic diagram of the external structure of the main wall built with the thermal insulation cast-in-place belt of the present utility model.

Fig. 4 is a structural schematic diagram of a new type of sintered shale insulating hollow block.

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Detailed ways

Referring to Fig. 1-Fig. 4, the new-type sintered shale thermal insulation hollow block wall thermal insulation cast-in-place belt of the utility model includes a new type of sintered shale thermal insulation hollow block 2 built on the main wall 1 cast-in-place belt. The wall 1 is a new type of sintered shale thermal insulation hollow block wall; the main wall 1 is divided into an upper wall and a lower wall with the cast-in-place belt as the boundary, and the inner and outer sides of the lower wall in the width direction of the upper section are respectively built. A layer of new sintered shale thermal insulation hollow blocks 2 is built, and the long sides of the new sintered shale thermal insulation hollow blocks 2 built on the inner side of the upper section of the lower wall are aligned with the inner surface of the main wall 1, and built on the lower wall. The long sides of the new-type sintered shale thermal insulation hollow blocks 2 on the outer side of the upper body section are aligned with the outer surface of the main wall 1; the above-mentioned two layers of new-type sintered shale thermal insulation hollow blocks 2 are provided with a full-length tie mesh 3 The two ends of the two longitudinal ribs 31 in the full-length tie mesh 3 are reliably connected to the structural columns 9 on both sides of the main wall body 1 respectively, the distribution bars 32 in the full-length tie mesh 3 adopt steel bars, and the adjacent The spacing between the distribution ribs 32 is 300mm; between the two layers of new-type sintered shale thermal insulation hollow blocks 2, there are horizontal tie bars 4 at intervals of 1m along the length direction of the main wall 1, and both ends of the transverse tie bars 4 have bends. Hook, the two ends of the transverse tie bars 4 are respectively hooked in the groove 8 provided on the upper edge of the side wall of the new sintered shale thermal insulation hollow block 2 through the hooks, and the depth and width of the groove 8 make the ends of the transverse tie bars The crotch can just be put in; Concrete 5 is poured between the two layers of new-type sintered shale thermal insulation hollow blocks 2 and the lower wall.

The specification of the novel sintered shale thermal insulation hollow block 2 is 490mm×80mm×58mm (length×width×height).

The full-length tie mesh 3 is composed of 2φ10 long steel bars and φ6300 short bars spot-welded in the plane, and the length of the full-length bars anchored into the structural column is not less than 300mm.

The upper transverse tie bar 4 is φ61000, and its function is mainly to ensure the integrity of the new sintered shale thermal insulation hollow block 2 built on both sides.

The concrete cast-in-place belt 5 is C20 ordinary concrete.

Example:

In order to illustrate the performance of the cast-in-place belt of the utility model, the inventor built a new-type sintered shale heat-insulating hollow block wall with the heat-preservation cast-in-place belt of the utility model, and built an ordinary new-type sintered shale heat-preservation block wall at the same time. Hollow block wall, and the thermal performance test research was carried out. The specific process is as follows:

During the construction, the main wall 1 is built with whole bricks, the wall thickness is 365mm, and the construction method is the sticky mortar method. At the cast-in-place belt part of the main wall 1, after cleaning the section of the lower wall, stick the special mortar with the new sintered shale insulation hollow block 2. Hollow blocks 2 are placed on the inside and outside sides of the upper section of the lower wall, so that the long sides and large faces of the new sintered shale thermal insulation hollow block blocks 2 are flush with the inner and outer skins of the main wall 1 respectively. After the inner and outer sides of the upper section of the entire lower wall are built with new-type sintered shale thermal insulation hollow blocks for 2 layers, a full-length tie mesh 3 is installed between the two layers of WDF thermal insulation blocks 2, and the full-length tie The two longitudinal ribs 31 in the mesh 3 are reliably connected to the structural columns 9 on both sides, the distribution ribs 31 are steel bars, and the distance between adjacent distribution ribs 31 is 300 mm. The new sintered shale thermal insulation hollow blocks 2 on both sides are tied on the upper side of the inner wall with transverse tie bars 4 at intervals of 1m, and the horizontal tie bars 4 are arranged on the upper edge of the inner wall of the inner and outer new sintered shale thermal insulation hollow blocks 2 In the groove 8, the groove 8 is 10mm deep and 7mm wide, and the crotch length of the transverse tie bar 4 is 30mm. The new-type sintered shale thermal insulation hollow block blocks 2 and the lower wall on both sides are used as templates, and cast-in-place concrete 5 is used. After the concrete is vibrated and compacted, the concrete surface is leveled so that the level is slightly higher than the top surface of the WDF block, and the upper wall can be continued to be built.

Two types of wall thermal specimens were built respectively, one is pure wall and the other is wall with insulation cast-in-place tape. Specimen 1 is a pure wall, which is built with sintered shale thermal insulation hollow blocks with the main specification block size of 365mm×248mm×249mm, and its thickness is 365mm. The seam thickness is 1-2mm. Specimen 2 is a wall with thermal insulation cast-in-place belt. This test uses the WTRZ-1212 wall steady-state heat transfer performance testing machine prepared by Shenyang Weite Applied Technology Development Co., Ltd., according to GB/T13475-2008 "Determination and Calibration of Steady-state Heat Transfer Properties of Building Components and Protective Hot Box Method" , using the principle of the protective hot box method, and the method of comprehensively calibrating the hot box at the same time, the heat transfer coefficient and thermal resistance of the specimen wall are measured. The test results and data are as follows:

Table 1 The weighted average temperature of the inner and outer surface areas of the outer wall of the metering box

Table 2 The temperature of the inner and outer surfaces of the nose cone of the metering box

Table 3 Average temperature and temperature difference on both sides of the specimen

Table 4 Average air temperature and ambient temperature of cold and hot boxes

Table 5 Temperature difference between cold and hot boxes and heating power of metering box

According to GB/T13475-2008 "Determination and Calibration of Steady State Heat Transfer Properties of Building Components and Protective Heat Method":

$\left.\begin{array}{c}{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="1"\; label="Q"\; filenames="HDA00002685316200011.png"\; state="\{\{state\}\}">Q</figure-callout></span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; Q</span>}}_{\mathrm{<span\; class="notranslate">\; p</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; Q</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; Q</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}\\ \mathrm{<span\; class="notranslate">\; R</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; A</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; si</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; se</span>}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>{\mathrm{<span\; class="notranslate">\; Q</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\\ \mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; <figure-callout\; id="1"\; label="Q"\; filenames="HDA00002685316200011.png"\; state="\{\{state\}\}">Q</figure-callout></span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; A</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; ni</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; ne</span>}}<span\; class="notranslate">\; )</span>\end{array}\right\}$

In the formula: A——is the measurement area of the test piece, m ² ;

T _si —— surface temperature of the hot side of the test piece, K or °C;

T _se —— is the surface temperature of the cold side of the specimen, K or °C;

T _ni —— is the ambient temperature of the hot side of the specimen, K or °C;

T _ne —— is the ambient temperature of the cold side of the specimen, K or °C

Q ₁ ——the heat flow through the specimen; Q _p ——the total input power for heating or cooling;

Calculated from the above formula: the heat transfer coefficient of the wall of specimen 1 K=0.476W/(m ² ·K), the total thermal resistance R=2.101m ² ·K/W, the heat transfer coefficient of the wall of specimen 2 K =0.462W/(m ² ·K), the total thermal resistance R=2.165m ² ·K/W, it can be seen from the test results that the heat transfer coefficients of the two specimen walls are less than 0.5W/(m ² · K), according to JGJ 26-2010 "Design Standards for Energy Conservation of Residential Buildings in Severely Cold and Cold Regions", both meet the target requirement of 65% building energy saving. Comparing the heat transfer coefficients of the two specimens, the heat transfer coefficient of the wall of specimen 2 is smaller than that of the wall of specimen 1, which is 0.014W/(m ² ·K), indicating that the insulation cast-in-place belt of the wall of specimen 2 is effective. It eliminates the thermal bridge effect produced by the traditional cast-in-place tape, and improves the overall thermal insulation performance of the wall, so that the wall with heat-preservation cast-in-place tape has a better thermal insulation and energy-saving effect than the pure wall.

Claims (6)

1. a novel sintered shale insulated hollow concrete block wall is incubated cast-in-place band, it is characterized in that, comprise and building by laying bricks or stones at the cast-in-place novel sintered shale insulated building-block (2) with the position of main wall body (1), described main wall body (1) is novel sintered shale insulated hollow concrete block wall; Described main wall body (1) is divided into top body of wall and bottom body of wall take cast-in-place band as the boundary, inside and outside both sides in the upper section width direction of bottom body of wall have been built respectively the novel sintered shale insulated building-block of one deck (2) by laying bricks or stones, large of novel sintered shale insulated building-block (2) the long limit of building section inboard on the body of wall of bottom by laying bricks or stones is neat with the inboard musculus cutaneus of main wall body (1), and large of novel sintered shale insulated building-block (2) the long limit of building the section outside on the body of wall of bottom by laying bricks or stones is neat with main wall body (1) outside musculus cutaneus; Establish elongated drawknot net sheet (3) between above-mentioned two-layer novel sintered shale insulated building-block (2), the two ends of the two vertical muscle (31) in elongated drawknot net sheet (3) reliably are connected with the constructional column (9) on main wall body (1) both sides respectively; Length direction along main wall body (1) between two-layer novel sintered shale insulated building-block (2) is provided with horizontal tension rib (4) at a certain distance, laterally all there is crotch at the two ends of tension rib (4), laterally hook in the groove (8) that novel sintered shale insulated building-block (2) sidewall upper edge arranges by crotch respectively at the two ends of tension rib (4), and the degree of depth of groove (8) and width can be put into the crotch of horizontal tension rib end just; Be cast with concrete (5) between two-layer novel sintered shale insulated building-block (2) and bottom body of wall.

2. the cast-in-place band of novel sintered shale insulated hollow concrete block wall insulation as claimed in claim 1, is characterized in that, the distribution bar (32) in described elongated drawknot net sheet (3) adopts reinforcing bar, adjacent distribution bar (32) spacing 300mm.

3. novel sintered shale insulated hollow concrete block wall as claimed in claim 1 is incubated cast-in-place band, it is characterized in that, the length direction along main wall body (1) between described two-layer novel sintered shale insulated building-block (2) is provided with horizontal tension rib (4) every the 1m distance.

4. the cast-in-place band of novel sintered shale insulated hollow concrete block wall insulation as claimed in claim 1, is characterized in that, the specification of described novel sintered shale insulated building-block (2) is 490mm * 80mm * 58mm.

5. the cast-in-place band of novel sintered shale insulated hollow concrete block wall insulation as claimed in claim 1, is characterized in that, the dark 10mm of described groove (8), and wide 7mm, laterally the crotch length of tension rib (4) is 30mm.

6. the cast-in-place band of novel sintered shale insulated hollow concrete block wall insulation as claimed in claim 1, is characterized in that, described main wall body (1) adopts full sized brick header, the thick 365mm of main wall body (1).

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