CN110748081A - Exposed aggregate decorative prestress SP wallboard and production process thereof - Google Patents

Abstract

An exposed aggregate decorative prestressed SP wallboard and a production process thereof. The wallboard comprises a board body, and the board body is provided with a through hole; upper and lower steel strands are respectively provided on the upper and lower sides of the through hole. The length direction of the hole, the upper layer steel strand and the lower layer steel strand are all parallel to the length direction of the plate body; an embedded part is arranged inside each of the four end corners of the plate body, and the embedded part includes a U-shaped groove in section. Steel, the channel steel includes two vertical side plates, and the bottoms of the two are fixedly connected by a horizontal bottom plate; a horizontal binding rod is welded on the top of the outer side of the side plate, and the length direction of the binding rod is the same as that of the channel steel. The length direction and the length direction of the plate body are parallel; the bottom plate is provided with a circular hole, a nut is fixed on the top surface of the bottom plate, and the screw hole of the nut is correspondingly connected with the circular hole; the two binding rods are respectively connected with the adjacent two. The steel strands of the lower layers are connected together by binding ropes, and the bottom surface of the bottom plate is flush with the bottom surface of the plate body; the concrete aggregate is exposed on the top surface of the plate body.

Description

A kind of exposed aggregate decorative prestressed SP wallboard and its production process

technical field

The invention belongs to the technical field of prefabricated buildings, in particular to an exposed aggregate decorative prestressed SP wall panel and a production process thereof.

Background technique

SP prestressed concrete hollow slab is a prestressed concrete hollow slab produced by the introduction of special equipment and technology from SPANCRETE company in the United States, referred to as SP slab. Compared with traditional concrete hollow slabs, SP slabs have the advantages of fast construction speed, stable product quality, large span, slab span not limited by modulus, and small deviation of geometric dimensions. SP boards are mostly used in public buildings such as large industrial plants and supermarkets. SP panels are more mature as floor panels and roof panels, but are rarely used as wall panels. The decorative effect of exposed aggregate has the advantages of one-time production to achieve the final decorative effect, saving decorative costs, beautiful and simple natural decoration, organic combination of nature and beauty, energy saving and environmental protection, good durability, and no need for post-maintenance. However, there is no product that combines the decorative effect of SP wallboard with exposed aggregate, which is a big gap in the market. The reason is that the decorative effect of the SP board combined with the exposed aggregate needs to start with the design, combined with the construction and installation requirements, design the connection and embedded parts in advance, and determine the production process. The decorative effect of the exposed aggregate also needs to pass the test and combine the decorative effect requirements. Using materials and production processes, the production process of the complete set of decorative prestressed SP wall panels with exposed aggregates is finally determined. The process is complicated, the workload is enormous, and various process problems need to be solved.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a decorative prestressed SP wallboard with exposed aggregate, which has stable structure, good effect of exposed aggregate finish, energy saving and environmental protection.

Another object of the present invention is to provide a production process for decorative prestressed SP wallboard with exposed aggregate, which has stable process, high standardization and reliable product quality.

To achieve the above object, the present invention adopts the following technical solutions:

An exposed aggregate decorative prestressed SP wall panel, comprising a concrete panel body with a rectangular cross-section, the panel body is provided with a plurality of parallel through holes; the upper and lower sides of the through holes are respectively provided with a plurality of upper-layer steel strands and a plurality of lower-layer steel strands Steel strand, the length direction of the through hole, the upper layer steel strand and the lower layer steel strand are all parallel to the length direction of the plate body; the inner side of the four end corners of the plate body is each provided with an embedded piece, and the embedded piece includes A channel steel with a U-shaped section, the channel steel includes two vertical side plates, and the bottoms of the two are fixedly connected by a horizontal bottom plate; a horizontal binding rod is welded on the top of the outer side of the side plate, and the length of the binding rod is The direction is parallel to the length direction of the channel steel and the length direction of the plate body; the bottom plate is provided with a circular hole, the top surface of the bottom plate is fixed with a nut, and the screw hole of the nut is correspondingly connected with the circular hole; two binding rods The two adjacent lower-layer steel strands are respectively connected together by binding ropes, and the bottom surface of the bottom plate is flush with the bottom surface of the plate body; the concrete aggregate is exposed on the top surface of the plate body.

In one embodiment, the distance between the two tie rods is smaller than the distance between the adjacent lower-layer steel strands; the lower-layer steel strands are all connected with at least two transverse bars by tying ropes, each The transverse ribs are all perpendicular to the lower steel strand; the two binding rods are respectively connected with the transverse ribs by binding ropes.

In one embodiment, the four edges of the plate body are provided with chamfers.

In one embodiment, the upper-layer steel strands and the lower-layer steel strands are in one-to-one correspondence, and the projections on the bottom surface of the plate body are coincident.

A production process for decorative prestressed SP wall panels with exposed aggregates, comprising the following steps:

A. According to the board length and shape of the SP wallboard to be produced, the rectangular substrate of a production line is typeset, the substrate is divided into a plurality of rectangular areas corresponding to each board body, and then the corresponding adjacent areas on the substrate are arranged. Draw a cutting line at the position of the border;

B. After the cutting line is drawn, draw the position of each embedded part on the substrate according to the distance between the embedded part and the edge of each plate body and the number of embedded parts;

C. After the position of the embedded parts is drawn, the upper and lower steel strands are laid out and tensioned above the base plate; Stranded wire for binding and fixing;

D. Using dry and hard concrete as raw material, using SP wallboard pouring equipment, start pouring production from one end of the substrate to the other end while walking; while the SP wallboard pouring equipment is walking, it is placed on the top of the formed plate body. The surface is sprayed with retarder, so that the top surface of the concrete slab forms an exposed aggregate finish;

E. After the pouring is completed, mark the position of each cutting line on the base plate on the produced plate body. When the strength of the concrete reaches 75-90% of the design strength, the upper and lower steel strands are Release the sheet; after the sheet is finished, cut according to the cutting line marked on the board.

In one embodiment, in the step C, a plurality of comb-shaped lateral positioning plates are arranged on the base plate, and a plurality of inverted plates corresponding to the upper and lower steel strands are arranged at the bottom of each lateral positioning plate. U-shaped slotted hole, the upper and lower steel strands corresponding to the upper and lower layers are passed through the slotted hole; in the step D, when the SP wall panel casting equipment walks close to the horizontal positioning plate, the horizontal The positioning plate is removed.

In one embodiment, in the step C, at least two transverse ribs perpendicular to the lower layer steel strand are bound on the lower layer steel strand, and the binding rod of the embedded part is connected to each transverse bar through a binding rope Tie together to hold together.

In one embodiment, in the step E, when the strength of the concrete reaches 75% of the design strength, the upper steel strand and the lower steel strand are stretched.

In one embodiment, the weight ratio of each component of the retarder is: sodium gluconate: water=1:5～1:2; each cubic meter of the concrete contains: cement 450kg, coarse-grained machine-made sand 715kg, fine-grain machine-made sand 409kg, stone 711kg, water 162kg.

In one embodiment, the weight ratio of each component of the retarder is: sodium gluconate: water=2:5.

The beneficial effects of the invention are as follows: the exposed aggregate decorative prestressed SP wallboard and its production process have stable process, high standardization degree, reliable product quality, stable structure, good exposed aggregate finishing effect, energy saving and environmental protection.

Description of drawings

Figure 1 is a bottom view of the exposed aggregate decorative prestressed SP wallboard of the present invention.

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1 .

3 is a top view of the embedded part of the exposed aggregate decorative prestressed SP wallboard of the present invention.

4 is a cross-sectional view of the embedded part of the exposed aggregate decorative prestressed SP wallboard of the present invention.

FIG. 5 is a top view of the base plate in the production process of the exposed aggregate decorative prestressed SP wallboard of the present invention.

FIG. 6 is a front view of the lateral positioning plate in the production process of the exposed aggregate decorative prestressed SP wallboard of the present invention.

Fig. 7 is a side view of the lateral positioning plate in the production process of the exposed aggregate decorative prestressed SP wallboard of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

As shown in FIGS. 1-4 , the present invention provides an exposed aggregate decorative prestressed SP wall panel, comprising a concrete panel body 1 with a rectangular cross-section, the four edges of the panel body 1 are provided with chamfers, and the panel body 1 is provided with several parallel through holes 11 . A plurality of upper-layer steel strands 2 and a plurality of lower-layer steel strands 3 are respectively provided on the upper and lower sides of the through hole 11 , and the length directions of the through-hole 11 , the upper-layer steel strand 2 and the lower-layer steel strand 3 are all the same as the plate body. 1's length direction is parallel. Preferably, the upper-layer steel strands 2 and the lower-layer steel strands 3 are in one-to-one correspondence, and the projections on the bottom surface of the plate body 1 overlap. The inner side of the four end corners of the plate body 1 is provided with an embedded piece 4, the embedded piece 4 includes a channel steel 41 with a U-shaped cross section, the channel steel 41 includes two vertical side plates 411, the bottom of the two is They are fixedly connected by the horizontal bottom plate 412 . A horizontal tie rod 42 is welded on the top of the outer side of the side plate 411 , and the length direction of the tie rod 42 is parallel to the length direction of the channel steel 41 and the length direction of the plate body 1 . The bottom plate 412 is provided with a circular hole 413 , a nut 43 is fixed on the top surface of the bottom plate 412 , and the screw hole of the nut 43 is correspondingly connected with the circular hole 413 . The two binding rods 32 are respectively connected with the two adjacent lower-layer steel strands 3 through binding ropes, and the bottom surface of the bottom plate 412 is flush with the bottom surface of the plate body 1 . By spraying the retarder on the surface, when the strength of the component reaches a certain level, the surface is washed, and the aggregate inside the concrete is uniform and beautiful, and the concrete aggregate is exposed on the top surface of the plate body 1 to form an exposed aggregate finish.

When the distance between the two binding rods 42 is smaller than the distance between the adjacent lower-layer steel strands 3, the lower-layer steel strands 3 are connected with at least two transverse bars 5 by tying ropes, and each transverse bar 5 All are perpendicular to the lower steel strand 3 . The two binding rods 42 are respectively connected with each transverse rib 5 by binding ropes.

As shown in FIG. 5 , the present invention also provides a production process for decorative prestressed SP wallboard with exposed aggregates, comprising the following steps:

A. According to the board length and shape of the SP wallboard to be produced, the rectangular substrate 6 of a production line is typeset, and the substrate 6 is divided into a plurality of rectangular areas 61 corresponding to each board body 1, and then corresponding to the substrate 6. Draw a cutting line 62 at the position of the boundary between adjacent areas;

B. After the cutting line 62 is drawn, according to the distance of the embedded part 4 from the edge of each plate body and the number of the embedded parts 4, draw the position point 63 of each embedded part on the substrate 6;

C. After the position points 63 of the embedded parts 4 are drawn, the upper and lower steel strands 3 are laid out and stretched above the base plate 6; The binding rods 42 on both sides are bound and fixed with the lower steel strand 3;

D. take dry hard concrete as raw material, in one embodiment, in this concrete, every cubic meter contains: cement 450kg, coarse-grain machine-made sand 715kg, fine-grain machine-made sand 409kg, stone 711kg, water 162kg; Utilize SP wallboard pouring equipment 7, start pouring production from one end of the base plate 6 to the other end while walking; SP wallboard pouring equipment 7 sprays retarder on the top surface of the formed plate body while walking, so that the top surface of the concrete plate body is sprayed with retarder. Forming an exposed aggregate finish; the weight ratio of each component of the retarder is: sodium gluconate:water=1:5～1:2, preferably, sodium gluconate:water=2:5;

E. After the pouring production is completed, mark the position of each cutting line 62 on the base plate 6 on the produced plate body, and wait until the strength of the concrete reaches 75-90% of the design strength, preferably 75%, for the upper steel strands 2 and the lower layer of steel strand 3 are stretched; after the stretch is completed, cut according to the cutting line marked on the board body.

As shown in Fig. 6 and Fig. 7, in this step C, a plurality of comb-shaped lateral positioning plates 8 are arranged on the base plate 6, and the bottom of each lateral positioning plate 8 is provided with a plurality of the upper steel strands 2 and the lower steel strands The inverted U-shaped slot hole 81 corresponding to the line 3, the upper layer steel strand 2 and the lower layer steel strand 3 corresponding to the upper and lower layers are penetrated in the slot hole 81; When the lateral positioning plate 8 is positioned, the lateral positioning plate 8 is removed.

When the distance between the binding rods 42 on both sides of the embedded part 4 is smaller than the distance between the adjacent lower-layer steel strands 3, in this step C, at least two are bound on the lower-layer steel strands 3 perpendicular to the lower-layer steel strands The transverse rib 5 is attached, and the binding rod 42 of the embedded part 4 is tied and fixed with each transverse rib 5 through a tying rope.

The exposed aggregate decorative prestressed SP wallboard and the production process thereof of the present invention have the advantages of stable process, high standardization degree, reliable product quality, stable structure, good effect of exposed aggregate decoration, energy saving and environmental protection.

The above descriptions are only preferred embodiments of the present invention, and do not limit the structure of the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (10)

1. An exposed aggregate decorative prestressed SP wall panel is characterized in that, it comprises a concrete plate body with a rectangular cross section, and the plate body is provided with several parallel through holes; the upper and lower sides of the through hole are respectively provided with a plurality of upper-layer steel plates Stranded wire and a plurality of lower layer steel strands, the length direction of the through hole, the upper layer steel wire and the lower layer steel strand are all parallel to the length direction of the plate body; the inner sides of the four end corners of the plate body are each provided with a buried The embedded part includes a channel steel with a U-shaped section, the channel steel includes two vertical side plates, and the bottoms of the two are fixedly connected by a horizontal bottom plate; the top of the outer side of the side plate is welded with a horizontal binding rod , the length direction of the binding rod is parallel to the length direction of the channel steel and the length direction of the plate body; the bottom plate is provided with a circular hole, the top surface of the bottom plate is fixed with a nut, and the screw hole of the nut corresponds to the circular hole connection; two tie rods are respectively connected with two adjacent lower steel strands through tie ropes, and the bottom surface of the bottom plate is flush with the bottom surface of the plate body; the top surface of the plate body exposes the concrete aggregate. 2. The exposed aggregate decorative prestressed SP wall panel according to claim 1, characterized in that: the distance between the two binding rods is smaller than the distance between adjacent lower steel strands; the lower steel strands They are all connected with at least two transverse ribs by tying ropes, and each transverse rib is perpendicular to the lower steel strand; the two binding rods are respectively connected with each transverse rib by tying ropes. 3. The exposed aggregate decorative prestressed SP wall panel according to claim 1 or 2, wherein the four edges of the panel body are provided with chamfers. 4. The exposed aggregate decorative prestressed SP wall panel according to claim 1 or 2, characterized in that: the upper-layer steel strands and the lower-layer steel strands are in one-to-one correspondence, and the projections on the bottom surface of the board are coincident . 5. a production technology of exposed aggregate decorative prestressed SP wallboard, is characterized in that: comprise the following steps: A. According to the board length and shape of the SP wallboard to be produced, the rectangular substrate of a production line is typeset, the substrate is divided into a plurality of rectangular areas corresponding to each board body, and then the corresponding adjacent areas on the substrate are arranged. Draw a cutting line at the position of the border; B. After the cutting line is drawn, draw the position of each embedded part on the substrate according to the distance between the embedded part and the edge of each plate body and the number of embedded parts; C. After the position of the embedded parts is drawn, the upper and lower steel strands are laid out and tensioned above the base plate; Stranded wire for binding and fixing; D. Using dry and hard concrete as raw material, using SP wallboard pouring equipment, start pouring production from one end of the substrate to the other end while walking; while the SP wallboard pouring equipment is walking, it is placed on the top of the formed plate body. The surface is sprayed with retarder, so that the top surface of the concrete slab forms an exposed aggregate finish; E. After the pouring is completed, mark the position of each cutting line on the base plate on the produced plate body. When the strength of the concrete reaches 75-90% of the design strength, the upper and lower steel strands are Release the sheet; after the sheet is finished, cut according to the cutting line marked on the board. 6 . The production process for decorative prestressed SP wall panels with exposed aggregates according to claim 5 , wherein in the step C, a plurality of comb-shaped lateral positioning plates are arranged on the base plate, and each lateral positioning plate is The bottom is provided with a plurality of inverted U-shaped slot holes corresponding to the upper layer steel strand and the lower layer steel strand, and the upper layer steel strand and the lower layer steel strand corresponding to the upper and lower layers are passed through the slot holes; in the step D, When the SP wallboard casting equipment travels to approach the lateral positioning plate, the lateral positioning plate is removed. 7. The production process of the exposed aggregate decorative prestressed SP wallboard according to claim 5 or 6, characterized in that: in the step C, at least two and the lower steel strand are bound on the lower steel strand vertical transverse ribs, and the tie rods of the embedded part are tied and fixed with each transverse rib by tying ropes. 8. The production process of the exposed aggregate decorative prestressed SP wallboard according to claim 5, wherein in the step E, when the strength of the concrete reaches 75% of the design strength, The steel strand is stretched. 9 . The production process for decorative prestressed SP wallboard with exposed aggregates according to claim 5 , wherein the weight ratio of each component of the retarder is: sodium gluconate: water=1:5～1 : 2; each cubic meter in the concrete contains: cement 450kg, coarse-grained machine-made sand 715kg, fine-grain machine-made sand 409kg, pebbles 711kg, and water 162kg. 10 . The production process for decorative prestressed SP wallboard with exposed aggregates according to claim 5 , wherein the weight ratio of each component of the retarder is: sodium gluconate: water=2:5. 11 .

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