TWM616151U - Building board with hollow structure - Google Patents

Abstract

A building board with a hollow structure includes a first board body, a second board body, and a connecting part. The second plate body and the first plate body are spaced apart, and opposite ends of the connecting portion are respectively connected to the first plate body and the second plate body, and are defined together with the first plate body and the second plate body At least one through hole is drawn. The building board is composed of a slurry composition, and the slurry composition includes a powder component and water. The powder components include main components, filling aggregates, and additives, and the main components include cement and fly ash. In this case, the addition of fly ash was used to reduce the cement content to reduce the cost, and to avoid the large amount of hydration heat generated by the cement during the mixing process, which would affect the production line, and also increase the viscosity of the slurry composition. So that the building board of this case can have sufficient bending failure load strength and maintain good workability.

Description

Building board with hollow structure

The present invention relates to a building board, in particular to a building board composed of cement slurry containing fly ash.

Modern environmental awareness is gradually rising, and the treatment of coal-burning waste and its impact on the environment and ecology have gradually received attention from the outside world. The use of solid wastes (such as fly ash) produced by power plants to replace a certain proportion of cement in concrete used as building materials can not only be used as environmentally friendly building materials and reduce the cost of cement use, but also provide power plant waste.化管。 The pipeline.

Among them, the content ratio of cement, fly ash and other components will affect the physical and chemical properties of the cement slurry. For example, if the content of cement is too high, it is easy to generate a lot of heat due to the hydration reaction during the manufacturing process. The production line is difficult to operate. On the contrary, if the content of fly ash is too high, it may reduce the mechanical strength of the building material, or it may take too long to condense into a sheet, resulting in excessive time cost. Therefore, for the concrete used in building materials, how to adjust the design of the composition ratio of cement, fly ash and other components to achieve the parameter characteristics that meet the requirements is one of the focuses of this technology.

The purpose of the present invention is to provide a building board with a hollow structure.

Therefore, the new type of building board with a hollow structure includes a first board body, a second board body, and a connecting part.

The second board is spaced apart from the first board.

The opposite ends of the connecting portion are respectively connected to the first plate body and the second plate body, and define at least one through hole together with the first plate body and the second plate body.

Preferably, the building board with a hollow structure, wherein the first board body, the second board body and the connecting portion are made of a slurry composition, and the slurry composition includes a powder component and water. , And the powder component includes a main component, a filler aggregate, and additives. The weight percentage of the powder component is 100 wt%, and the content of the main component is between 60 wt% and 70 wt%. The content is between 20wt% and 37wt%, the content of the additive is between 3wt% and 10wt%, where the main components include cement and fly ash, and the weight ratio of the cement to the fly ash is between 1 to 19, and the water The weight ratio to the powder component is between 0.2 and 0.3.

The effect of the new model is: through the addition of the fly ash, the content of the cement in the main component is reduced to reduce the production cost, and the production line is reduced due to the large amount of hydration heat generated in the process of making the building board. The affected situation occurs, and the viscosity of the slurry composition is increased, which is easy to knead and shape. In addition, by controlling the weight ratio of the cement to the fly ash, the prepared building board has good workability and at the same time has sufficient bending and failure load strength.

The new type of building board with a hollow structure is suitable for making building materials for construction. In addition, the building board 2 is composed of a slurry, which can be applied to, for example, soundproof walls, interior walls or exterior walls.

Referring to FIG. 1, the building board 2 includes a first board body 21, a second board body 22, and a connecting portion 23.

The second plate body 22 is spaced apart from the first plate body 21, and opposite ends of the connecting portion 23 are respectively connected to the opposite surfaces of the first plate body 21 and the second plate body 22, and are connected to the first plate body. 21 and the second plate body 22 jointly define at least one through hole 24.

In this embodiment, the connecting portion 23 is composed of a plurality of partitions that are spaced apart and arranged in parallel with each other, and together with the first plate body 21 and the second plate body 22, a plurality of strips and the first plate body can be defined. 21 and the second plate 22 have parallel through holes 24.

It should be noted that, in actual implementation, the shape, distribution, and number of the connecting portion 23 and the through holes 24 may vary in different ways depending on requirements, and the foregoing examples and figures are not limited.

In some embodiments, the building board 2 may further include a plurality of grooves (not shown), and the grooves may be formed on the surface of the first plate body 21 away from the second plate body 22, or formed at the same time. On the surfaces of the first board body 21 and the second board body 22 that are far away from each other, the grooves are elongated and arranged at intervals, and can be used in the construction process. When the building boards 2 are stacked, they are used as containers for pouring cement. Set up space, either as a decorative design pattern, or as a functional drainage channel.

In this embodiment, after the slurry composition is mixed and kneaded, the integrally formed building board 2 is formed by extrusion molding. Therefore, the first board 21, the second board 22 and the There is no gap in the joint between the connecting parts 23, which is not limited to the foregoing.

In this embodiment, the aforementioned building board 2 is made of the slurry composition, and the building board 2 is a fiber-reinforced cement board for exterior decoration, which can be used for soundproof walls, interior walls, or exterior walls.

In detail, the building board 2 is composed of the slurry and is produced through multiple procedures such as uniform mixing, kneading, extrusion molding, raw material cutting, and curing.

The slurry composition includes powder components and water.

The powder components include main components, filling aggregates, and additives. Based on the weight percentage of the powder component as 100wt%, the content of the main component is between 60wt% and 70wt%, the content of the filler aggregate is between 20wt% and 37wt%, and the content of the additive is between 3wt% and 3wt%. 10wt%.

In detail, the main components include cement and fly ash, the content of the cement is between 32 wt% and 60 wt%, and the weight ratio of the cement to the fly ash is between 1-19. Preferably, the weight ratio of the cement to the fly ash is between 1 and 10. Among them, the fly ash is obtained by collecting solid dust in the exhaust gas from boilers or thermal power plants. It itself contains silicon, aluminum, iron, and calcium and other active components, which can promote the water of the fly ash. The chemical reaction occurs to increase the viscosity of the slurry composition. In this embodiment, the fly ash is an F grade fly ash (low calcium fly ash, the content of calcium oxide is not more than 10%) as an example, and the fineness of the fly ash is close to that of the cement.

When the powder component is mixed with water, the cement and water will undergo a hydration reaction to generate Ca(OH) ₂ and generate a large amount of heat of hydration. The fly ash is a pozzolan material that will further interact with Ca(OH) ₂ reacts to produce colloid (3CaO‧2SiO ₂ ‧3H ₂ O), which can be filled in the pores of the building board 2 as a bonding material, thereby making the resulting building board 2 denser and improving the The overall strength of the slurry composition and improve its water tightness. At the same time, it can also reduce the heat of hydration of the slurry composition as a whole, so as to reduce the subsequent use of the slurry composition in the process of forming the building board 2 due to internal and external heat. The situation of cracks caused by the difference, and at the same time, avoid the impact on the production line due to a large amount of heat generation.

In addition, since the hydration reaction of the fly ash occurs after the hydration reaction of the cement, the addition of the fly ash can adjust/extend the setting time of the slurry composition to adjust the strength growth rate of the slurry composition , So that the subsequently produced building board achieves the expected mechanical strength.

The filler aggregate can be selected from sand and gravel particles, or waste stones with stable water content, etc., to reduce the amount of cement, and to reduce the drying shrinkage of the slurry composition during setting and cracks. And the particle size of the filler aggregate can be a single gradation, or a mixture of coarse and fine aggregates with different particle size gradations.

The additives include fibers and plasticizers. In this embodiment, the fiber is selected from organic fiber or inorganic fiber, such as carbon fiber, glass fiber or plant fiber, and the content of the powder component is between 4wt% to 6wt%. The addition of the fiber can increase the subsequent The bending failure load strength of the building materials made by the slurry composition. The plasticizer is selected from methyl cellulose and the like, and the content of the powder component is between 0.7wt% to 0.9wt%. The addition of the plasticizer can be used to increase the formability and formability of the powder component. Machinability.

It should be noted that, in some embodiments, the additive may only include one of fibers or plasticizers as required.

The water composed of the slurry is used to promote the hydration reaction of the main components in the powder component, so that the slurry composition has a certain degree of cementing strength. The higher the water content of the slurry composition, the higher the fluidity of the slurry composition. Although the operability is good, it is also easy to cause self-weight sag during the casting or sintering process, which makes the overall structure of the product uneven or deformed; Insufficient water is easy to cause the slurry composition to be too dry and hard to mix during the mixing process, and there are problems such as uneven mixing. Therefore, preferably, the weight ratio of the water to the powder component is controlled to be between 0.2 and 0.3. In this embodiment, the weight ratio of the water to the powder component is between 0.2 to 0.3, so that the building board made of the slurry composition has good strength and compactness while maintaining a certain degree Workability. More preferably, the weight ratio of the water to the powder component is between 0.21 and 0.26.

The following specific examples 1 to 4 are used to illustrate the different ratios of the slurry composition used to prepare the building board of the present invention, and the components of each specific example are summarized in Table 1. It should be noted that, in actual implementation, the composition ratio of the slurry composition, the ratio of water to the slurry composition, etc. are not limited to the following specific examples.

Materials used in specific examples: Cement: Type I cement of Taiwan Cement Corporation Fly ash: Class F fly ash Filling bone material: marble sand Plasticizer: methyl cellulose Fiber: organic fiber

Specific example 1

The slurry composition of this specific example 1 includes 256 kg of water and 1071 kg of powder components, and the weight ratio of the water to the powder components is 0.24. Wherein, based on the weight percentage of the powder composition as 100wt%, the powder composition includes 637.2kg (59.5wt%) of cement, 70.8 (6.6wt%) of fly ash, and 305kg (28.5wt%) of filler aggregate , 9kg (0.8wt%) of plasticizer, and 49kg (4.6wt%) of fiber, and the weight ratio of the cement to the fly ash is 9.

Specific example 2

The slurry composition of this specific example 2 includes 256 kg of water and 1071 kg of powder components, and the weight ratio of the water to the powder components is 0.24. Wherein, based on the weight percentage of the powder composition of the specific example 2 being 100wt%, the powder composition includes 566.4kg (52.9wt%) of cement, 141.6 (13.2wt%) of fly ash, and 305kg (28.5wt%) The weight ratio of the cement to the fly weight is 4.

Specific example 3

The slurry composition of this specific example 3 includes 256 kg of water and 1071 kg of powder components, and the weight ratio of the water to the powder components is 0.24. Among them, based on the weight percentage of the powder composition of the specific example 3 being 100wt%, the powder composition includes 495.6kg (46.3wt%) of cement, 212.4 (19.8wt%) of fly ash, and 305kg (28.5wt%) The weight ratio of the cement to the fly weight is 2.33.

Specific example 4

The slurry composition of this specific example 4 includes 250 kg of water and 1071 kg of powder components, and the weight ratio of the water to the powder components is 0.23. Wherein, based on the weight percentage of the powder composition of this specific example 5 being 100wt%, the powder composition contains 354kg (33.05wt%) of cement, 354 (33.05wt%) of fly ash, and 305kg (28.5wt%) of Filled with aggregates, 9kg (0.8wt%) of plasticizer, and 49kg (4.6wt%) of fiber, and the ratio of the cement to the fly weight is 1.

Next, the slurry compositions of these specific examples 1 to 4 were respectively subjected to uniform mixing, kneading, extrusion molding, raw material cutting and other processes in order to prepare building board test pieces with predetermined shapes. Next, the building board test pieces with a predetermined shape were cured by steam for 24 hours in an environment with a temperature of 60°C or higher; then, the building board test pieces were cooled to room temperature and then cured for 56 days. After 56 days, the bending failure load strength, water permeability, moisture content, and impact resistance of the building board test pieces were measured. The composition and test results of related specific examples are summarized in Table 1.

Among them, the bending failure load strength is obtained by the measurement method of the three-point bending failure load; the water permeability test is to join a tube with an inner diameter of 35mm and a height of 300mm on the surface of the building board test pieces, and then from the tube body Inject water in the medium and make the water surface height about 250mm, make the water contact the building board test piece, and observe how much the water surface height decreases after 24 hours; the moisture content test is to place the building board test piece at a temperature of about 60±3℃ Dry for 24 hours in an environment with a certain humidity, take it out and place it in a drying cabinet with a specific humidity to cool to room temperature (about 20°C), and measure the weight changes of the building board test pieces before and after drying to obtain their moisture content; The impact resistance test is to drop a spherical weight (weight approximately 530g) vertically on the center of the surface of the building board test pieces to observe whether the test pieces are penetrated or cracked.

It should be noted that, in this embodiment, the inspection process of the bending failure load strength, water permeability, moisture content, and impact resistance test meets the inspection standard of "Fiber-reinforced cement board for exterior use" (standard inspection by the Ministry of Economic Affairs) Revised by the Bureau, Standard No.: CNS 11699).

Table 1 Specific example (EX) 1 2 3 4 Powder component (wt%) cement 59.5 52.9 46.3 33.05 Fly ash 6.6 13.2 19.8 33.05 Filling bone material 28.5 28.5 28.5 28.5 Plasticizer 0.8 0.8 0.8 0.8 fiber 4.6 4.6 4.6 4.6 Weight ratio Cement/fly ash 9 4 2.33 1 Water/powder composition 0.24 0.24 0.24 0.23 Inspection standard test CNS 11699 Bending failure load (N) 15523 15796 15788 15911 Impact resistance No penetration No penetration No penetration No penetration Water permeability (mm) 1 1 1 1 Moisture content (%) 4.7 4.9 4.7 4.7

From the test results of these specific examples 1 to 4 in Table 1, it can be known that after 56 days of curing time (that is, the hardening time of the slurry composition), the test piece with higher fly ash content has higher bending failure Load strength, and the building board test pieces prepared in these specific examples 1 to 4 have good bending failure load strength (more than 15000N), sufficient strength and impact resistance, and low moisture content (not more than 5%), which meets the specifications for the use of building boards. In addition, the building board test pieces prepared by these specific examples 1 to 4 have sufficient compactness and low water permeability, so as to reduce the occurrence of water seepage in buildings when they are subsequently applied to construction.

In summary, the new type of building board with a hollow structure utilizes the fly ash added to the building board 2's constituent material (ie slurry composition) and the control of the relative composition distribution ratio of the slurry composition to reduce the The content of cement in the main component can reduce the production cost, and reduce the occurrence of the production line being affected by the large amount of heat of hydration in the process of making the building board 2. In addition, by adjusting the cement and the fly ash Using fly ash to increase the viscosity of the slurry composition and easy to shape, it can also make the made building board 2 maintain the bending failure load strength while also having good workability, so it can indeed be achieved The purpose of this model.

However, the above are only examples of the present model. When the scope of implementation of the present model cannot be limited by this, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

2: Building board 21: The first board 22: The second board 23: Connection part 24: Through hole

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which: Fig. 1 is a perspective view illustrating an embodiment of the new type of building board with a hollow structure.

2: Building board

21: The first board

22: The second board

23: Connection part

24: Through hole

Claims (4)

A building board with a hollow structure, including: A first board body; A second board, spaced apart from the first board; and A connecting portion, opposite ends of the connecting portion are respectively connected to the first plate body and the second plate body, and define at least one through hole together with the first plate body and the second plate body. The building board with a hollow structure according to claim 1, wherein the connecting portion, the first plate body and the second plate body jointly define a plurality of through holes. The building board with a hollow structure according to claim 1, wherein the first board body, the second board body and the connecting portion are made of a slurry composition, and the slurry composition includes a powder component And water, and the powder component includes a main component, a filling bone material, and additives. The weight percentage of the powder component is 100wt%, and the content of the main component is between 60wt% and 70wt%. The bone filling The content of the material ranges from 20wt% to 37wt%, and the content of the additive ranges from 3wt% to 10wt%. The main components include cement and fly ash, and the weight ratio of the cement to the fly ash ranges from 1 to 19. And the weight ratio of water to the powder component is between 0.2 and 0.3. The building board with a hollow structure according to claim 3, wherein the weight ratio of the cement to the fly ash is between 1 and 10.

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