CN215976679U - Environment-friendly steel slag recycled concrete interpenetration pavement brick and preparation mold thereof - Google Patents

Abstract

The utility model relates to an environment-friendly steel slag recycled concrete interpenetrating pavement brick and a preparation mold thereof, and the pavement brick comprises a quadrilateral pavement brick body integrally cast and formed by steel slag recycled concrete, wherein the bottom of the pavement brick body is provided with crossed and interpenetrating water storage channels, each water storage channel comprises a transverse water storage channel and a longitudinal water storage channel, the transverse water storage channels and the longitudinal water storage channels penetrate through two side surfaces of the pavement brick body, and the transverse water storage channels and the longitudinal water storage channels are both wavy. The crisscross wavy water storage channel is designed at the bottom of the pavement brick, so that the material is saved, the permeability is high, and the void volume at the bottom can instantaneously store a large amount of rainwater.

Description

Environment-friendly steel slag recycled concrete interpenetration pavement brick and preparation mold thereof

The technical field is as follows:

the utility model relates to an environment-friendly steel slag recycled concrete interpenetrating pavement brick and a preparation mold thereof.

Background art:

with the acceleration of urbanization, the demand of building materials is greatly increased, and the problems of natural resource shortage, waste concrete treatment of buildings and the like are faced at present. The steel slag is used as waste generated in the steel-making process, and has large discharge amount and difficult treatment. The traditional pavement brick is prepared by taking cement, clay and natural gravels as main raw materials through a series of processes such as high temperature, high pressure, sintering and the like, can be used for paving road surfaces in gardens, schools, squares and the like, has the functions of wear resistance, frost resistance, sound insulation, heat absorption and the like, but also has some defects, such as consumption of a large amount of resources, complex process, easiness in crushing, poor water permeability, influence on urban rainwater circulation, natural purification and the like.

At present, the discharge amount of steel slag in China is large, the comprehensive utilization rate of the steel slag is extremely low and can only reach 10%, and the waste of land resources is caused by random stacking. The waste concrete can generate micro-cracks when being crushed, and the regenerated coarse and fine aggregates have porosity, weak bonding property and loose property and a transition region between the regenerated aggregates, so that the mechanical property variability of the regenerated aggregates is large, and the engineering application of the regenerated concrete is limited. Although the high-temperature and high-pressure preparation process can improve the production efficiency to a certain extent, the adverse effect on the environment is great. In addition, traditional pavior brick permeates water the effect poor, hinders that the nature rainwater from following up, destroys city water ecosystem. Finally, the existing pavement bricks are complex in process, poor in durability, easy to damage and corrode, and not suitable for long-term use.

The utility model has the following contents:

the utility model aims at solving the problems in the prior art, namely, the utility model aims to provide the environment-friendly steel slag recycled concrete interpenetrating pavement brick and the preparation mold thereof.

In order to achieve the purpose, the utility model adopts the technical scheme that: the environment-friendly type steel slag recycled concrete road surface brick comprises a road surface brick body integrally cast with steel slag recycled concrete, wherein a water storage channel which is crossed and communicated is arranged at the bottom of the road surface brick body.

Furthermore, the water storage channel comprises a transverse water storage channel and a longitudinal water storage channel, and the transverse water storage channel and the longitudinal water storage channel penetrate through two side faces of the pavement brick body.

Furthermore, the transverse water storage channel and the longitudinal water storage channel are both wavy.

Further, the steel slag recycled concrete is composed of portland cement, recycled coarse aggregate, recycled fine aggregate and steel slag.

Further, the recycled fine aggregate has a particle size of not more than 5mm, an apparent density of 2300 kg/m and a water absorption of 15% and a fineness modulus of 2.5.

Further, the recycled coarse aggregate has a particle size of 5-20 mm, an apparent density of 2400 kg/m, water absorption of 5.3%, a crushing index of 10% and an aggregate substitution rate of 100% during the high-speed high.

Further, the steel slag has the particle size ranging from 5mm to 20mm, apparent density of 3450 kg/m and high water absorption rate of 1.2 percent and crushing index of 6.9 percent when subjected to heavy-year harvest.

The utility model adopts another technical scheme that the preparation mold for the environment-friendly steel slag recycled concrete interpenetrated pavement brick is formed by assembling a left steel mold and a right steel mold which are symmetrical and fixed by a left lock catch and a right lock catch; the top surface of the mould is provided with a concave pouring cavity for pouring the pavement brick body, the bottom surface of the pouring cavity is provided with a transverse convex rib and a longitudinal convex rib which are crossed in a cross shape, and the cross sections of the transverse convex rib and the longitudinal convex rib are wavy and are used for respectively pouring a transverse water storage channel and a longitudinal water storage channel.

Compared with the prior art, the utility model has the following effects: (1) the structure design is simple and reasonable, the bottom parts are in a crisscross wavy shape and are communicated with each other, materials are saved, meanwhile, the permeability is strong, and the volume of a gap at the bottom part can instantaneously store a large amount of rainwater; (2) the method has the advantages of low cost, resource saving and easy production, completely replaces common coarse and fine aggregates, and can be applied to squares, districts, parking lots and other corners.

Description of the drawings:

FIG. 1 is a schematic sectional front view showing the structure of an embodiment of the present invention;

FIG. 2 is a first perspective view of an embodiment of the present invention;

FIG. 3 is a schematic perspective view of the second embodiment of the present invention;

FIG. 4 is a schematic illustration of the paving of an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional front view of a paved structure according to an embodiment of the utility model;

fig. 6 is a schematic perspective view of a manufacturing mold according to an embodiment of the present invention.

In the figure:

1-recycling coarse aggregate; 2-steel slag; 3-recycling fine aggregate; 4-water permeable seam; 5, a water storage channel; 6-a recycled material cushion layer; 7-a pavement brick body; 8-a transverse water storage channel; 9-longitudinal water storage channel; 10-steel die; 11-pouring a cavity; 12-transverse convex ribs; 13-longitudinal convex ribs; 14-locking.

The specific implementation mode is as follows:

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

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 5, the environment-friendly steel slag recycled concrete inter-penetrating pavement brick comprises a quadrilateral pavement brick body 7 integrally cast by steel slag recycled concrete, wherein a cross-shaped through water storage channel 5 is arranged at the bottom of the pavement brick body 7, the water storage channel 5 comprises a transverse water storage channel 8 and a longitudinal water storage channel 9, the transverse water storage channel 8 and the longitudinal water storage channel 9 both penetrate through two side faces of the pavement brick body 7, and the transverse water storage channel 8 and the longitudinal water storage channel 9 are both wavy. The crisscross wavy water storage channel is designed at the bottom of the pavement brick, so that the material is saved, the permeability is high, and the void volume at the bottom can instantaneously store a large amount of rainwater.

In this embodiment, the steel slag recycled concrete is composed of portland cement, recycled coarse aggregate 1, recycled fine aggregate 3, and steel slag 2. The steel slag can be added to enhance the compactness and the wear resistance of the pavement brick matrix, and the recycled coarse and fine aggregates are used for supporting and filling the pavement brick matrix.

In the embodiment, the particle size of the recycled fine aggregate is not more than 5mm, the apparent density is 2300 kg/m, the water absorption rate is 15%, the fineness modulus is 2.5, and the requirement of secondary grading is met.

In the embodiment, the recycled coarse aggregate has a particle size of 5-20 mm, an apparent density of 2400 kg/m, a water absorption rate of 5.3%, a crushing index of 10% and an aggregate substitution rate of 100%.

In the embodiment, the steel slag has the particle size ranging from 5mm to 20mm, excellent gradation, an apparent density of 3450 kg/m, water absorption of 1.2 percent and crushing index of 6.9 percent.

In the embodiment, the Portland cement is used as a cementing material of the pavement brick, 42.5R common Portland cement is selected for carrying out high-speed transportation at a density of 3100 kg/m.

In this embodiment, the paving brick body is a regular quadrilateral, such as a rectangle or a square.

As shown in fig. 6, the preparation mold of the pavement brick is assembled by two symmetrical steel molds at left and right, and the two steel molds 10 are fixed by left and right lock catches 14; the top surface of the mould is provided with a downwards concave pouring cavity 11 for pouring the pavement brick body 7, the bottom surface of the pouring cavity 11 is provided with a transverse convex rib 12 and a longitudinal convex rib 13 which are crossed in a cross shape, and the cross sections of the transverse convex rib 12 and the longitudinal convex rib 13 are both wavy and are used for respectively pouring a transverse water storage channel 8 and a longitudinal water storage channel 9. Before pouring, the inner wall of the pouring cavity is evenly brushed with lubricating oil, the mold is fixed by the left lock catch and the right lock catch, concrete is poured from the upper part during pouring, a vibrating table is adopted for vibration forming, and after the pouring, the mold is placed into a standard curing room for curing. After 12h, the fixing lock catch is disassembled, the mold is removed, and the maintenance is continued for 28 days.

In the embodiment, the pavement brick is prepared from the following raw materials in parts by weight: 342 parts of ordinary portland cement, 695 parts of recycled fine aggregate, 695 parts of recycled coarse aggregate, 260 parts of water and 463 parts of steel slag. The preparation process comprises the following steps:

step S1, obtaining steel slag and recycled aggregate: selecting the same batch of waste concrete, carrying out manual or mechanical preliminary crushing, then further crushing by adopting a jaw crusher, then removing impurities, further sorting, washing, vibrating and screening, and mixing according to the required particle size and quality to obtain recycled fine aggregate with the particle size not exceeding 5mm and recycled coarse aggregate with high performance of 5-20 mm; selecting the same batch of waste steel slag, crushing and screening the waste steel slag, and then mutually doping the waste steel slag to obtain high-quality fine steel slag with the particle size of 5-20 mm;

step S2, stirring cement: sequentially adding the recycled coarse aggregate, the recycled fine aggregate and the steel slag into a forced mixer, stirring for 0.5-1 min to uniformly distribute the recycled coarse aggregate, the recycled fine aggregate and the steel slag, and then putting the cement into the stirrer, and stirring for 0.5-1 min;

step S3, stirring of the steel slag recycled concrete: adding water into a forced mixer for multiple times, and stirring for 30s each time to completely wrap the recycled coarse aggregate, the recycled fine aggregate and the steel slag by the mortar to obtain steel slag recycled concrete;

step S4, measuring the working performance of the steel slag recycled concrete, correcting the mixture ratio if the working performance does not meet the requirement, keeping the water-cement ratio unchanged, and repeating the steps S2-S3;

step S5, pouring: pouring the steel slag recycled concrete from the upper part of the preparation mould, and then placing the preparation mould on a vibrating table for fully vibrating; and (3) after the vibration is finished, putting the preparation mold into a curing room for curing, dismantling the preparation mold after 12h, and continuing curing for 28 days to obtain the finished pavement brick shown in the figures 2 and 3.

In this embodiment, when this pavior brick mated formation: firstly, paving a cushion layer 6 by using recycled coarse aggregate, tamping, then filling gaps among the coarse aggregate by using recycled fine aggregate, and then paving the pavior brick by using recycled fine aggregate mortar, as shown in figures 4 and 5. Because the bottom of the pavement brick is provided with the crisscross wavy water storage channel, as shown in figures 2 and 3, every two pavement bricks are mutually penetrated, have large void volume, can immediately collect a large amount of rainwater and quickly infiltrate into the ground.

The utility model has the advantages that:

1) the waste concrete is processed into the recycled coarse and fine aggregates and is used for manufacturing the pavement bricks, so that the cost is low, the resources are saved, and the common coarse and fine aggregates are completely replaced;

2) the bottoms of the pavement bricks are in a cross wavy shape and are communicated with each other, so that materials are saved; meanwhile, the permeability is strong, and the volume of a gap at the bottom can store a large amount of rainwater instantaneously;

3) the pavement brick can keep a certain humidity, purify air and reduce dust;

4) the application is wide, and the device can be applied to various corners such as squares, districts, parking lots and the like;

5) the pavement bricks are regular quadrangles, the mold is simple, and large-scale prefabricated production can be carried out;

6) compared with the traditional pavement brick, the pavement brick has the advantages of simple process, high strength and better mechanical property and permeability.

If the utility model discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims (2)

1. The utility model provides an environment-friendly slag recycled concrete link up pavior brick each other which characterized in that: the pavement brick comprises a pavement brick body integrally cast and formed by steel slag recycled concrete, wherein a cross-shaped through water storage channel is arranged at the bottom of the pavement brick body; the water storage channels comprise a transverse water storage channel and a longitudinal water storage channel, and the transverse water storage channel and the longitudinal water storage channel penetrate through two side surfaces of the pavement brick body; the transverse water storage channel and the longitudinal water storage channel are both wavy.

2. A preparation mould for preparing the environment-friendly steel slag recycled concrete interpenetrating pavement brick as claimed in claim 1, which is characterized in that: the die is assembled by two symmetrical steel dies on the left and the right, and the two steel dies are fixed by a left lock catch and a right lock catch; the top surface of the mould is provided with a concave pouring cavity for pouring the pavement brick body, the bottom surface of the pouring cavity is provided with a transverse convex rib and a longitudinal convex rib which are crossed in a cross shape, and the cross sections of the transverse convex rib and the longitudinal convex rib are wavy and are used for respectively pouring a transverse water storage channel and a longitudinal water storage channel.

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