TW201815725A - Cured mortar and method of manufacturing the same - Google Patents

Abstract

Cured mortar and method of manufacturing the same are provided. Steps of the method of manufacturing the cured mortar are stated as follows. An alkaline solution is formed, including at least one of alkali metal hydroxides and alkali metal silicates. Precursors including aluminosilicate crystals are added in the alkaline solution. The alkaline solution and the precursors are stirred to act the precursors. Glass fragments are added in the alkaline solution to form a mortar. The mortar is cured to form the cured mortar.

Description

Mortar cured product and method of manufacturing same

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a mortar cured product, and more particularly to a mortar cured product comprising unground glass fragments and a method of making the same.

At present, glass is widely used in various fields, such as precision electronic products, furniture, building materials, etc., and glass materials may be used. However, with the extensive use of glass materials, waste glass is also produced in large quantities, seriously affecting the living environment of human beings.

In the prior art, waste glass is mixed into cement concrete or asphalt concrete, and the waste glass is reused to achieve environmental protection. However, waste glass mixed into cement concrete or asphalt concrete only occupies a small part of concrete. For example, the amount of waste glass added in cement concrete is only about 1 to 15 parts by weight, and the addition of waste glass in asphalt concrete. The amount is only about 5 to 20 parts by weight, and the use rate of the waste glass is small, so that the waste glass cannot be consumed immediately and accumulates. Therefore, there is an urgent need for a disposal method for waste glass to solve the defect that the consumption rate of waste glass is insufficient in the prior art.

The present invention provides a mortar cured product, and more particularly to a mortar cured product comprising unmilled glass fragments and a method of producing the same.

The method of the present invention for producing a mortar cured product comprises forming an alkali solution comprising at least one of an alkali metal hydroxide and an alkali metal niobate. The precursor containing the yttrium aluminate crystal is added to the alkali solution, and the alkali solution is stirred to excite the precursor, wherein the raw materials of the precursor include fly ash, hearth powder, reservoir sludge, river silt, kaolin, granite powder, brick powder , marble powder or a combination of two or more of the foregoing materials, the fineness of the precursor is 3000 cm ² /g to 20000 cm ² /g, the temperature at which the precursor is excited is 15 ° C to 95 ° C, and the alkali equivalent is 1.5% ~30%. The glass pieces are added to the alkali solution to form a mortar, wherein the glass pieces have a particle diameter of 0.15 mm to 4.76 mm, and the water-to-binder ratio of the mortar is 0.3 to 0.6. The mortar is solidified to form a mortar solidified material, wherein the temperature of the solidified mortar is from 15 ° C to 95 ° C.

In an embodiment of the invention, wherein the glass pieces are added to the alkali solution after the step of adding the precursor containing the yttrium aluminate crystals to the alkali solution.

In an embodiment of the invention, the glass cullet contains aluminum and lanthanum, and the weight ratio of the aluminum element to the lanthanum element is 0.05 to 0.3.

In an embodiment of the invention, the base equivalent is 7% to 25% when the precursor is excited.

In an embodiment of the invention, the temperature at which the precursor is excited is from 15 ° C to 30 ° C.

In an embodiment of the invention, wherein the glass crumb is added to the alkali solution while the precursor containing the yttrium aluminate crystal is added to the alkali solution.

In an embodiment of the invention, the alkali metal hydroxide is lithium hydroxide, sodium hydroxide, potassium hydroxide or a combination thereof; the alkali metal silicate is lithium niobate, sodium citrate, potassium citrate or Its combination.

The present invention provides a mortar cured product comprising: 90 vo% to 30 vo% of a cementitious material, wherein the cementing material comprises a base-excited yttrium aluminate crystal precursor and an alkali metal oxide, wherein the precursor material comprises Fly ash, hearth powder, reservoir sludge, river silt, kaolin, granite powder, brick powder, marble powder or a combination of two or more of the foregoing materials, the alkali equivalent of the cement material is 1.5% to 30%, and the precursor The fineness is 3000 cm ² /g to 20000 cm ² /g; and 10 vo% to 70 vo% of the glass fragments are filled between the cement materials, wherein the glass fragments have a particle diameter of 0.15 mm to 4.76 mm.

In an embodiment of the present invention, the glass cullet is a broken waste flat glass, a waste container glass, a waste automobile glass, a waste lamp tube, a waste image tube, or a combination of two or more of the foregoing.

In an embodiment of the invention, the glass cullet contains aluminum and lanthanum, and the weight ratio of the aluminum element to the lanthanum element is 0.05 to 0.3.

Based on the above-described mortar solidified product and a method for producing the same, the mortar cured product of the present invention contains a large amount of waste glass, and therefore, a large amount of waste glass can be consumed by the present invention to achieve environmental protection. In addition, since the glass pieces used in the mortar solidification need only be broken without grinding, the cost required for manufacturing the mortar solidified material is greatly reduced. In addition, in some embodiments, the precursor can be excited at a lower temperature and the mortar can be cured or aged at a lower temperature, reducing additional energy consumption and improving the stability of the manufacture.

The above described features and advantages of the invention will be apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing the steps of a method for producing a mortar cured product according to an embodiment of the present invention. First, in step S100, an alkali solution is formed, the alkali solution comprising at least one of an alkali metal hydroxide and an alkali metal silicate. The alkali metal hydroxide is, for example, lithium hydroxide, sodium hydroxide, potassium hydroxide or a combination thereof; the alkali metal niobate is, for example, lithium niobate, sodium citrate, potassium citrate or a combination thereof, wherein sodium hydroxide has Lower cost and higher purity are therefore preferred choices for the present invention.

By estimating the weight ratio of the weight of the alkali metal oxide in the binder to the precursor after the alkali excitation, the base equivalent is defined, and the higher the amount of the alkali metal hydroxide or the alkali metal citrate is, the higher the amount is calculated. The higher the base equivalent. In an embodiment of the invention, when the precursor is excited, the weight ratio of the weight of the alkali metal oxide to the precursor in the cemented material is 1.5% to 30%, in other words, the base equivalent is 1.5%. ~30%. The method for preparing a mortar solidified material of the invention has an optimum alkali equivalent, and the compressive strength of the test body increases substantially as the alkali equivalent increases before reaching the optimum alkali equivalent, and when the optimum alkali equivalent is exceeded, the excess Instead, the base destroys the colloidal structure and reduces the compressive strength of the mortar cured product. Therefore, when the alkali equivalent is controlled at 7% to 25%, the mortar cured product can have a higher compressive strength, and when the alkali equivalent is 20%, the mortar cured product can be developed to an optimum strength. In one embodiment, the calculated base equivalent is 17%.

With continued reference to FIG. 1, in step S110, the precursor is added to the alkaline solution. In one embodiment, the precursor is a mineral or waste containing yttrium aluminate crystals, and the raw materials of the precursor include, for example, fly ash, hearth powder, reservoir sludge, river silt, kaolin, granite powder, brick powder, marble powder or A combination of two or more of the foregoing materials. In one embodiment, the starting material of the precursor containing the yttrium aluminate crystal comprises fly ash, and the fly ash can add less alkali metal citrate than the other aluminosilicate crystals during the alkali excitation step. The salt does not even require the addition of an alkali metal citrate, so the cost of the alkali solution is low. In an embodiment of the invention, the fineness of the precursor is, for example, 3000 cm ² /g to 20,000 cm ² /g, but the invention is not limited thereto. In other embodiments, the fineness of the precursor is, for example, 3000 cm ² /g to 10000 cm ² /g or 3000 cm ² /g to 5000 cm ² /g.

In step S120, the alkali solution is stirred to excite the precursor. In an embodiment of the invention, the temperature at which the precursor is excited is from 15 ° C to 95 ° C, although the invention is not limited thereto. In other embodiments, the temperature at which the precursor is excited is between 15 ° C and 30 ° C. In one embodiment, the temperature at which the precursor is excited is between 15 ° C and 20 ° C, and the precursor is excited at a temperature near room temperature to make the process more stable and reduce additional energy consumption. In some embodiments, the base equivalent when the precursor is excited is 7% to 25%. Since the amount of alkali added is high, the temperature at which the precursor is excited can be lower, thereby achieving the purpose of saving energy.

Referring to FIG. 1, in step S130, the glass pieces are added to the alkali solution to form a mortar. The glass fragments can be used as the aggregate in the mortar, and the cement in the mortar includes the precursor after the excitation. In an embodiment of the invention, the glass fragments are crushed waste flat glass, waste container glass, discarded automobile glass, waste lamp, waste image tube, or a combination of two or more of the foregoing. In other words, in an embodiment of the present invention, the glass fragments do not require additional grinding, as long as the broken waste glass, for example, waste glass having a particle diameter of 0.15 mm to 4.76 mm, can be used as an embodiment of the present invention. The glass pieces in the middle save the grinding cost required for recycling the waste glass. In an embodiment of the invention, the glass fragments contain aluminum and antimony elements, and the aluminum and antimony elements in the glass fragments can react with the alkali solution and the precursor, and the aluminum and antimony elements in the glass fragments are With an appropriate weight ratio, the strength of the mortar cured product can be further improved. In one embodiment, the weight ratio of the aluminum element to the lanthanum element in the glass cullet is from 0.05 to 0.3, although the invention is not limited thereto. In other embodiments, the weight ratio of aluminum element to niobium element in the glass pieces is from 0.1 to 0.2. In some embodiments, the weight ratio of aluminum element to niobium element in the glass pieces is from 0.15 to 0.25.

In an embodiment of the invention, the fluidity of the mortar increases as the water-to-binder ratio of the alkali-activated cement material increases, but the compressive strength decreases as the water-to-gel ratio of the mortar increases. In the present embodiment, when the water-to-binder ratio is controlled at 0.3 to 0.6, a preferred mortar solidified material can be obtained, or, further, when the water-to-binder ratio is 0.35 to 0.5, workability is better and higher. The mortar of the compressive strength has a water-to-binder ratio of 0.45 as the optimum value, and the mortar solidified product has good workability and conforms to the compressive strength of the structure. In an embodiment of the invention, the mortar has a water-to-binder ratio of 0.5, and the cured mortar has a compressive strength of 389.1 kgf/cm ² .

Since the mortar has an optimal mixing time to make the strength of the test piece develop to the optimum value, the compressive strength of the test piece begins to decrease after the optimum blending time, and the sample is mixed when the mixing temperature is higher. The shorter the optimum mixing time will be. Therefore, the higher the mixing temperature, the more difficult it is to control the desired mixing time. In an embodiment of the invention, the mixing temperature and time of the mortar can be controlled to be 15 ° C to 95 ° C, and the mixing time is required to be greater than 2 minutes. In other embodiments, the mixing temperature is controlled to be 15 ° C to 70 ° C or 15 ° C to 20 ° C to make the mortar mixing process easier to handle. The optimum mixing temperature is 15 ° C, and the mixing time is 5 minutes, which reduces the temperature required for mixing. This makes the mortar process simpler and has higher application value in engineering.

Next, please continue to refer to Figure 1. In step S140, the mortar is solidified. The curing temperature and curing time used to cure the sand are related to the strength of the mortar cured product. Generally, the higher the curing temperature of the mortar, the shorter the time required for curing. For example, mortar can be cured at 95 ° C for 1 to 14 days to obtain sufficient strength. However, high temperature curing requires additional energy consumption, and it is not easy to control the temperature at high temperatures, resulting in unstable process, so it can be at lower temperatures, for example It is easier to control the process for curing for 3-7 days at 65 °C, and the best process is to cure at 15 °C for 7 days, eliminating the need for external temperature during curing, which makes the process of mortar the most simple, and The project has higher application value.

In an embodiment of the invention, the mortar cured product comprises: 90 vo% to 30 vo% of the cement material, wherein the cement material comprises an alkali-excited precursor and an alkali metal oxide; and 10 vo% to 70 vo% of the glass Pieces, filled between the cement.

The content of the glass fragments affects the workability and compressive strength of the mortar solidified material. When the volume ratio of the glass fragments is 10 vo% to 70 vo%, the mortar solidified material can be formed. However, if the content of the glass fragments is too low, the amount of the precursor and the alkali metal oxide required is relatively increased, which increases the pretreatment cost of the waste glass, so the content of the glass fragments is 50 vo% to 70 vo%. More appropriate. However, if the content of the glass fragments is too high, the fluidity of the slurry is low and the working degree is poor, so that more air and pores remain in the mortar solidification during the molding process, thereby affecting the compressive strength of the mortar cured product. No practical engineering application value, when the content of glass fragments is 50 vo%, it has the best workability and compressive strength, and can effectively consume waste glass by adding glass fragments. In some embodiments of the invention, the amount of glass fragments may be 20 vo%, 30 vo%, 40 vo%, 50 vo%, or 60 vo%.

In some embodiments, the mortar fluidity of different amounts of glass chips is as shown in Table 1.

Table 1

Based on the above, the mortar solidified material in the present embodiment contains a large amount of waste glass which does not require grinding, and therefore, a large amount of waste glass can be consumed by the present invention to achieve environmental protection. In addition, since the glass pieces used in the mortar solidification need only be broken without grinding, the cost required for manufacturing the mortar solidified material is greatly reduced. In addition, in the present embodiment, the glass fragments are added to the alkali solution after the step of adding the precursor containing the yttrium aluminate crystals to the alkali solution, and therefore, when the mortar is mixed or solidified, the glass fragments are The degree of expansion is small, which improves the stability of the process when manufacturing mortar cured materials.

2 is a flow chart showing the steps of a method for producing a mortar cured product according to another embodiment of the present invention. Steps S200 and S240 are the same as steps S100 and S140 shown in FIG. 1, and therefore will not be described below.

Please continue to refer to Figure 2. In step S210, the precursor and the glass pieces are added to the alkali solution. In other words, the precursor and the glass fragments in this embodiment are simultaneously added with an alkali solution. Next, in step S220, the alkali solution is stirred to excite the precursor and form a mortar.

In summary, the mortar solidified material and the method for producing the same according to the present invention, the mortar solidified material contains a large amount of waste glass, and therefore, a large amount of waste glass can be consumed by the present invention to achieve the purpose of environmental protection. In addition, since the glass pieces used in the mortar solidification need only be broken without grinding, the cost required for manufacturing the mortar solidified material is greatly reduced. In addition, in some embodiments, the precursor can be excited at a lower temperature and the mortar can be mixed, cured or aged at a lower temperature, thereby reducing additional energy consumption and improving the process. stability.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

S100, S110, S120, S130, S140, S200, S210, S220, S240‧‧ steps

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing the steps of a method for producing a mortar cured product according to an embodiment of the present invention. 2 is a flow chart showing the steps of a method for producing a mortar cured product according to another embodiment of the present invention.

Claims (10)

A method of producing a mortar cured product, comprising: forming an alkali solution, the alkali solution comprising at least one of an alkali metal hydroxide and an alkali metal niobate; adding a precursor of the yttrium aluminate crystal to the base In the solution, and stirring the alkali solution to excite the precursor, wherein the raw materials of the precursor include fly ash, hearth powder, reservoir sludge, river silt, kaolin, granite powder, brick powder, marble powder or the foregoing two a combination of the above materials, the fineness of the precursor is 3000 cm ² /g to 20000 cm ² /g, the temperature at which the precursor is excited is 15 ° C to 95 ° C, and the alkali equivalent is 1.5% to 30 %) adding a glass crumb to the alkali solution to form a mortar, wherein the glass crumb has a particle size of between 0.15 mm and 4.76 mm, and the mortar has a water-to-binder ratio of 0.3 to 0.6; The mortar is cured to form the mortar cured product, wherein the temperature at which the mortar is cured is from 15 ° C to 95 ° C. The method for producing a mortar cured product according to claim 1, wherein the glass crumb is added to the slurry after the step of adding the precursor containing yttrium aluminate crystals to the alkali solution. In an alkaline solution. The method for producing a mortar solidified material according to claim 1, wherein the glass cullet contains an aluminum element and a lanthanum element, and the weight ratio of the aluminum element to the lanthanum element is 0.05 to 0.3. The method for producing a mortar cured product according to claim 1, wherein the base equivalent when the precursor is excited is 7% to 25%. The method for producing a mortar cured product according to claim 1, wherein the temperature at which the precursor is excited is 15 to 30 °C. The method for producing a mortar solidified material according to claim 1, wherein the glass crumb is added to the alkali solution while the precursor containing the yttrium aluminate crystal is added to the alkali solution. in. The method for producing a mortar cured product according to claim 1, wherein: the alkali metal hydroxide is lithium hydroxide, sodium hydroxide, potassium hydroxide or a combination thereof; and the alkali metal niobate It is lithium niobate, sodium citrate, potassium citrate or a combination thereof. A mortar solidified material comprising: 90 vo% to 30 vo% of a cement material, wherein the cement material comprises a base-excited yttrium aluminate crystal precursor and an alkali metal oxide, wherein the precursor material Including fly ash, hearth powder, reservoir sludge, river silt, kaolin, granite powder, brick powder, marble powder or a combination of two or more of the foregoing materials, the alkali equivalent of the cement material is 1.5% to 30%, and the The fineness of the precursor is 3000 cm ² /g to 20000 cm ² /g; and 10 vo% to 70 vo% of the glass fragments are filled between the cemented materials, wherein the particle size of the glass fragments is 0.15 mm to 4.76 mm. The mortar solidified material according to claim 8, wherein the glass fragments are crushed waste flat glass, waste container glass, discarded automobile glass, waste lamp tube, waste image tube or a combination of the foregoing two or more . The mortar solidified material according to claim 8, wherein the glass cullet contains aluminum element and lanthanum element, and the weight ratio of the aluminum element to the lanthanum element is 0.05 to 0.3.