Preparation method of special admixture for fluid curing regenerated mixture

Abstract

The invention is applicable to the technical field of environment-friendly materials, and provides a preparation method of a special admixture for a fluid curing regenerated mixture, which comprises the following steps: determining the following raw materials: a water reducer, an air entraining agent, an early strength agent, a curing agent and a fluidity enhancer; carrying out powdering treatment on the solid raw materials to prepare raw material powder; pre-mixing, wet-process mixing and dry-process mixing are carried out; wherein the pre-mixing refers to primary mixing of raw material powder; the wet mixing is performed by adding water into the liquid raw materials; dry-method mixing is carried out on the raw material powder by adopting a dry method, and all the components are uniformly mixed through a stirrer; the flowability and viscosity of the admixture are controlled by adjusting the moisture content or adding a regulator; the fluidity, curing speed, strength, durability and other properties of the material can be enhanced; meanwhile, the preparation method disclosed by the invention can be used for preparing the special admixture suitable for the fluid-state curing regenerated mixture, so that the good performance of the material in the construction process is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly materials, and in particular to a method for preparing a special admixture for fluidized solidified recycled mixture. Background Art

[0002] The all-solid waste recycled fluid mixture (referred to as fluid mixture) has high fluidity and can fill itself under its own weight without or with only a little vibration to form a self-compacting structure, which can effectively solve the above problems. At the same time, the fluid mixture uses construction waste and alkaline waste residue as raw materials, which effectively improves the comprehensive utilization rate of solid waste resources and reduces the harm caused to the natural environment by open-air stacking and landfilling of solid waste. Flowable Solidified Recycled Material (FSRM) is a new type of environmentally friendly material, commonly used in the repair and construction of infrastructure such as roads and bridges. It is a flowable and easy-to-construct material formed by mixing construction waste, recycled aggregates and curing agents.

[0003] Special admixtures used for fluidized solidified recycled mixtures are usually used to enhance the material's fluidity, solidification speed, strength and durability.

[0004] The existing method for preparing a special admixture for fluidized solidified recycled mixture has relatively poor performance after specific preparation; therefore, based on this problem, a method for preparing a special admixture for fluidized solidified recycled mixture is proposed. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a method for preparing a special admixture for fluidized solidified recycled mixture, aiming to solve the problem that the existing method for preparing a special admixture for fluidized solidified recycled mixture has relatively poor performance after specific preparation.

[0006] Specific technical solution: A method for preparing a special admixture for fluidized solidified recycled mixture, comprising the following steps: Step 1: Determine the raw materials According to the functional requirements of admixtures, the following raw materials are determined: water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer; Step 2: Raw material processing The solid raw materials are powdered to make raw material powders; then premixed, wet mixed and dry mixed; among them, premixed is to preliminarily mix the raw material powders; wet mixed is to wet mix the liquid raw materials by adding water; dry mixed is to dry mix the raw material powders and evenly mix the ingredients by a stirrer; Step 3: Regulate the fluidity and viscosity of the admixture The fluidity and viscosity of the admixture can be controlled by adjusting the moisture content or adding a regulator.

[0007] The present invention uses a combination of a water reducer, an air entraining agent, an early strength agent, a curing agent and a fluidity enhancer, and then combines the use of premixing, wet mixing and dry mixing treatments to achieve the fluidity, curing speed, strength and durability of the enhanced material; at the same time, the preparation method of the present invention can prepare a special admixture suitable for fluidized curing recycled mixtures, ensuring the good performance of the material during the construction process.

[0008] The technical solution of this application is further described below: In one embodiment, in the raw materials determined in step 1, the water reducer includes naphthalene-based, aliphatic-based and polycarboxylic acid-based water reducers; the air entraining agent is alkylbenzene sulfonate and / or rosin soap; the early strength agent is a component using sodium sulfate, calcium sulfate or calcium chloride; the curing agent includes cement, lime and / or gypsum; and the fluidity enhancer is made of a polycarboxylate plasticizer.

[0009] In one of the embodiments, in the raw material processing of step 2, the preliminary mixing of the premixing is to use a blast to blow up the various raw material powders separately, and then bring them together for preliminary mixing; wherein the wind speed provided by the blast is 8-15 m / s.

[0010] Furthermore, the wind speed provided by the blast is 10 m / s.

[0011] In one embodiment, in the raw material processing of step 2, wet mixing is to divide the liquid raw material into multiple units, and add water to the units while the units are flowing for wet mixing to form multiple fluid mixing units; thereafter, the multiple fluid mixing units are collected and mixed.

[0012] Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group, so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 0.5-1.5 m / s; and then the plurality of fluid mixing units are collided with each other to form a centralized and aggregated mixing.

[0013] Furthermore, the multiple unit liquid raw materials are driven to flow by an impeller group, and the impeller group is composed of a rotating shaft, a turntable, blades and a stirring rod. The rotating shaft is fixed on the output shaft of the motor, the turntable is fixed on the end of the rotating shaft, and the blades are arranged in a plurality and distributed in a circular array around the turntable, and the stirring rods are arranged in a plurality and distributed in a circular array on the rotating shaft; so that the multiple unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.2 m / s; and then the multiple fluid mixing units are collided with each other to form a concentrated and summarized mixing.

[0014] In one embodiment, in the raw material processing of step 2, the stirring speed provided by the stirrer used for dry mixing is 680-980 r / min.

[0015] In one embodiment, the method for preparing a special admixture for fluidized solidified recycled mixture further includes: detecting key performance indicators of the admixture including water reduction rate, air entrainment amount, setting time and early strength.

[0016] In one embodiment, the method for preparing a special admixture for fluidized solidified recycled mixture further includes: adjusting the dosage of admixtures including water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer according to environmental factors such as temperature and humidity.

[0017] Compared with the prior art, the method for preparing the special admixture for fluidized solidified recycled mixture of the present invention can achieve the following: The present invention uses a combination of a water reducer, an air entraining agent, an early strength agent, a curing agent and a fluidity enhancer, and then combines the use of premixing, wet mixing and dry mixing treatments to achieve the fluidity, curing speed, strength and durability of the enhanced material; at the same time, the preparation method of the present invention can prepare a special admixture suitable for fluidized curing recycled mixtures, ensuring the good performance of the material during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a flowchart of a method for preparing a special admixture for fluidized solidified recycled mixture. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The specific implementation of the present invention is described in detail below in conjunction with the specific embodiments. Example 1

[0020] like Figure 1 As shown: A method for preparing a special admixture for fluidized solidified recycled mixture, comprising the following steps: Step 1: Determine the raw materials According to the functional requirements of admixtures, the following raw materials are determined: water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer; Step 2: Raw material processing The solid raw materials are powdered to make raw material powders; then premixed, wet mixed and dry mixed; among them, premixed is to preliminarily mix the raw material powders; wet mixed is to wet mix the liquid raw materials by adding water; dry mixed is to dry mix the raw material powders and evenly mix the ingredients by a stirrer; Step 3: Regulate the fluidity and viscosity of the admixture The fluidity and viscosity of the admixture can be controlled by adjusting the moisture content or adding a regulator.

[0021] The present invention uses a combination of a water reducer, an air entraining agent, an early strength agent, a curing agent and a fluidity enhancer, and then combines the use of premixing, wet mixing and dry mixing treatments to achieve the fluidity, curing speed, strength and durability of the enhanced material; at the same time, the preparation method of the present invention can prepare a special admixture suitable for fluidized curing recycled mixtures, ensuring the good performance of the material during the construction process. Example 2

[0022] This embodiment is a further explanation based on Example 1: In the raw materials determined in step 1, the water reducer includes naphthalene-based, aliphatic-based and polycarboxylic acid-based water reducers; the air entraining agent is alkylbenzene sulfonate and / or rosin soap; the early strength agent is a component using sodium sulfate, calcium sulfate or calcium chloride; the curing agent includes cement, lime and / or gypsum; and the fluidity enhancer is made of polycarboxylate plasticizer. Example 3

[0023] This embodiment is a further explanation based on Example 1: In the step 2 of raw material processing, the preliminary mixing of the premixing is to use air blowing to blow up the various raw material powders separately, and then bring them together for preliminary mixing; wherein the wind speed provided by the air blowing is 8-15 m / s. Example 4

[0024] This embodiment is a further explanation based on the embodiment 3: the wind speed provided by the blast is 10m / s. Example 5

[0025] This embodiment is a further explanation based on Example 1: In the raw material processing of step 2, wet mixing is to divide the liquid raw material into multiple units, and add water to the units while the units are flowing for wet mixing to form multiple fluid mixing units; thereafter, the multiple fluid mixing units are collected and mixed. Example 6

[0026] This embodiment is a further explanation based on Example 5: The multiple unit liquid raw materials are driven to flow by an impeller group; the multiple unit liquid raw materials are formed into multiple fluid mixing units with a flow rate of 0.5-1.5 m / s; and the multiple fluid mixing units are collided with each other to form a centralized and aggregated mixing. Example 7

[0027] This embodiment is a further explanation based on Example 6: The multiple unit liquid raw materials are driven to flow by an impeller group, which is composed of a rotating shaft, a rotating disk, blades and a stirring rod. The rotating shaft is fixed on the output shaft of the motor, the rotating disk is fixed on the end of the rotating shaft, the blades are arranged in a plurality and distributed in a circular array around the rotating disk, and the stirring rods are arranged in a plurality and distributed in a circular array on the rotating shaft; the multiple unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.2 m / s; and then the multiple fluid mixing units are collided with each other to form a concentrated and summarized mixing. Example 8

[0028] This embodiment is a further explanation based on Example 1: In the raw material processing of step 2, the stirring speed provided by the stirrer used for dry mixing is 680-980r / min. Example 9

[0029] This embodiment is a further explanation based on Example 1: The method for preparing a special admixture for fluidized solidified recycled mixture also includes: detecting key performance indicators of the admixture including water reduction rate, air entrainment amount, setting time and early strength. Example 10

[0030] This embodiment is a further explanation based on Example 1: The method for preparing a special admixture for fluidized solidified recycled mixture also includes: adjusting the dosage of admixtures including water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer according to environmental factors of temperature and humidity. Embodiment 11

[0031] A method for preparing a special admixture for fluidized solidified recycled mixture comprises the following steps: Step 1: Determine the raw materials According to the functional requirements of admixtures, the following raw materials are determined: water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer; water reducing agent includes naphthalene series, aliphatic series and polycarboxylic acid series water reducing agent; air entraining agent is made of alkylbenzene sulfonate and / or rosin soap; early strength agent is made of sodium sulfate, calcium sulfate or calcium chloride; curing agent includes cement, lime and / or gypsum; fluidity enhancer is made of polycarboxylate plasticizer; Step 2: Raw material processing The solid raw materials are powdered to make raw material powders; then premixed, wet mixed and dry mixed; among them, premixed is to preliminarily mix the raw material powders; wet mixed is to wet mix the liquid raw materials by adding water; dry mixed is to dry mix the raw material powders and evenly mix the ingredients by a stirrer; The preliminary mixing of the premix is ​​to use air blowing to blow up the various raw material powders separately, and then bring them together for preliminary mixing; the wind speed provided by the air blowing is 8 m / s; the wet mixing is to divide the liquid raw material into multiple units, and add water to the units while they are flowing for wet mixing to form multiple fluid mixing units; thereafter, the multiple fluid mixing units are concentrated and mixed; the stirring speed provided by the mixer used for dry mixing is 680 r / min.

[0032] Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group; so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 0.5 m / s; and then the plurality of fluid mixing units are collided with each other to form a centralized and aggregated mixing; Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group, the impeller group is composed of a rotating shaft, a rotating disk, blades and a stirring rod, the rotating shaft is fixed on the output shaft of the motor, the rotating disk is fixed on the end of the rotating shaft, the blades are arranged in a plurality of annular arrays distributed around the rotating disk, and the stirring rods are arranged in a plurality of annular arrays distributed on the rotating shaft; so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.2 m / s; and then the plurality of fluid mixing units collide with each other to form a concentrated and aggregated mixing; Step 3: Regulate the fluidity and viscosity of the admixture The fluidity and viscosity of the admixture can be controlled by adjusting the moisture content or adding a regulator.

[0033] The method for preparing the special admixture for fluidized solidified recycled mixture also includes: detecting key performance indicators of the admixture including water reduction rate, air entrainment, setting time and early strength; the method for preparing the special admixture for fluidized solidified recycled mixture also includes: adjusting the dosage of the admixture including water reducer, air entraining agent, early strength agent, curing agent and fluidity enhancer according to environmental factors such as temperature and humidity. Example 12

[0034] A method for preparing a special admixture for fluidized solidified recycled mixture comprises the following steps: Step 1: Determine the raw materials According to the functional requirements of admixtures, the following raw materials are determined: water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer; water reducing agent includes naphthalene series, aliphatic series and polycarboxylic acid series water reducing agent; air entraining agent is made of alkylbenzene sulfonate and / or rosin soap; early strength agent is made of sodium sulfate, calcium sulfate or calcium chloride; curing agent includes cement, lime and / or gypsum; fluidity enhancer is made of polycarboxylate plasticizer; Step 2: Raw material processing The solid raw materials are powdered to make raw material powders; then premixed, wet mixed and dry mixed; among them, premixed is to preliminarily mix the raw material powders; wet mixed is to wet mix the liquid raw materials by adding water; dry mixed is to dry mix the raw material powders and evenly mix the ingredients by a stirrer; The preliminary mixing of the premix is ​​to use air blowing to blow up the various raw material powders separately, and then bring them together for preliminary mixing; the wind speed provided by the air blowing is 15 m / s; the wet mixing is to divide the liquid raw material into multiple units, and add water to it while it is flowing for wet mixing to form multiple fluid mixing units; thereafter, the multiple fluid mixing units are concentrated and mixed; the stirring speed provided by the mixer used for dry mixing is 980 r / min.

[0035] Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group; so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.5 m / s; and then the plurality of fluid mixing units are collided with each other to form a centralized and aggregated mixing; Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group, the impeller group is composed of a rotating shaft, a rotating disk, blades and a stirring rod, the rotating shaft is fixed on the output shaft of the motor, the rotating disk is fixed on the end of the rotating shaft, the blades are arranged in a plurality of annular arrays distributed around the rotating disk, and the stirring rods are arranged in a plurality of annular arrays distributed on the rotating shaft; so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.2 m / s; and then the plurality of fluid mixing units collide with each other to form a concentrated and aggregated mixing; Step 3: Regulate the fluidity and viscosity of the admixture The fluidity and viscosity of the admixture can be controlled by adjusting the moisture content or adding a regulator.

[0036] The method for preparing the special admixture for fluidized solidified recycled mixture also includes: detecting key performance indicators of the admixture including water reduction rate, air entrainment, setting time and early strength; the method for preparing the special admixture for fluidized solidified recycled mixture also includes: adjusting the dosage of the admixture including water reducer, air entraining agent, early strength agent, curing agent and fluidity enhancer according to environmental factors such as temperature and humidity. Embodiment 13

[0037] A method for preparing a special admixture for fluidized solidified recycled mixture comprises the following steps: Step 1: Determine the raw materials According to the functional requirements of admixtures, the following raw materials are determined: water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer; water reducing agent includes naphthalene series, aliphatic series and polycarboxylic acid series water reducing agent; air entraining agent is made of alkylbenzene sulfonate and / or rosin soap; early strength agent is made of sodium sulfate, calcium sulfate or calcium chloride; curing agent includes cement, lime and / or gypsum; fluidity enhancer is made of polycarboxylate plasticizer; Step 2: Raw material processing The solid raw materials are powdered to make raw material powders; then premixed, wet mixed and dry mixed; among them, premixed is to preliminarily mix the raw material powders; wet mixed is to wet mix the liquid raw materials by adding water; dry mixed is to dry mix the raw material powders and evenly mix the ingredients by a stirrer; The preliminary mixing of the premix is ​​to use air blowing to blow up the various raw material powders separately, and then bring them together for preliminary mixing; the wind speed provided by the air blowing is 10 m / s; the wet mixing is to divide the liquid raw material into multiple units, and add water to it while it is flowing for wet mixing to form multiple fluid mixing units; thereafter, the multiple fluid mixing units are concentrated and mixed; the stirring speed provided by the mixer used for dry mixing is 980 r / min.

[0038] Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group; so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.5 m / s; and then the plurality of fluid mixing units are collided with each other to form a centralized and aggregated mixing; Furthermore, the plurality of unit liquid raw materials are driven to flow by an impeller group, the impeller group is composed of a rotating shaft, a rotating disk, blades and a stirring rod, the rotating shaft is fixed on the output shaft of the motor, the rotating disk is fixed on the end of the rotating shaft, the blades are arranged in a plurality of annular arrays distributed around the rotating disk, and the stirring rods are arranged in a plurality of annular arrays distributed on the rotating shaft; so that the plurality of unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.2 m / s; and then the plurality of fluid mixing units collide with each other to form a concentrated and aggregated mixing; Step 3: Regulate the fluidity and viscosity of the admixture The fluidity and viscosity of the admixture can be controlled by adjusting the moisture content or adding a regulator.

[0039] The method for preparing the special admixture for fluidized solidified recycled mixture also includes: detecting key performance indicators of the admixture including water reduction rate, air entrainment, setting time and early strength; the method for preparing the special admixture for fluidized solidified recycled mixture also includes: adjusting the dosage of the admixture including water reducer, air entraining agent, early strength agent, curing agent and fluidity enhancer according to environmental factors such as temperature and humidity.

[0040] In the description of the present invention, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a special admixture for fluidized solidified recycled mixture, characterized in that: The following steps are involved: Step 1: Determine the raw materials According to the functional requirements of admixtures, the following raw materials are determined: water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer; Step 2: Raw material processing The solid raw materials are powdered to make raw material powders; then premixed, wet mixed and dry mixed; among them, premixed is to preliminarily mix the raw material powders; wet mixed is to wet mix the liquid raw materials by adding water; dry mixed is to dry mix the raw material powders and evenly mix the ingredients by a stirrer; Step 3: Regulate the fluidity and viscosity of the admixture The fluidity and viscosity of the admixture can be controlled by adjusting the moisture content or adding a regulator.

2. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 1, characterized in that: In the raw materials determined in step 1, the water reducer includes naphthalene-based, aliphatic-based and polycarboxylic acid-based water reducers; the air entraining agent is alkylbenzene sulfonate and / or rosin soap; the early strength agent is a component using sodium sulfate, calcium sulfate or calcium chloride; the curing agent includes cement, lime and / or gypsum; and the fluidity enhancer is made of polycarboxylate plasticizer.

3. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 1, characterized in that: In the step 2 of raw material processing, the preliminary mixing of the premixing is to use air blowing to blow up the various raw material powders separately, and then bring them together for preliminary mixing; wherein the wind speed provided by the air blowing is 8-15 m / s.

4. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 3, characterized in that: The wind speed provided by the blast is 10 m / s.

5. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 1, characterized in that: In the raw material processing of step 2, wet mixing is to divide the liquid raw material into multiple units, and add water to the units while the units are flowing for wet mixing to form multiple fluid mixing units; thereafter, the multiple fluid mixing units are collected and mixed.

6. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 5, characterized in that: The multiple unit liquid raw materials are driven to flow by an impeller group; the multiple unit liquid raw materials are formed into multiple fluid mixing units with a flow rate of 0.5-1.5 m / s; and the multiple fluid mixing units are collided with each other to form a centralized and aggregated mixing.

7. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 6, characterized in that: The multiple unit liquid raw materials are driven to flow by an impeller group, which is composed of a rotating shaft, a rotating disk, blades and a stirring rod. The rotating shaft is fixed on the output shaft of the motor, the rotating disk is fixed on the end of the rotating shaft, the blades are arranged in a plurality and distributed in a circular array around the rotating disk, and the stirring rods are arranged in a plurality and distributed in a circular array on the rotating shaft; the multiple unit liquid raw materials form a plurality of fluid mixing units with a flow rate of 1.2 m / s; and then the multiple fluid mixing units are collided with each other to form a concentrated and summarized mixing.

8. The method for preparing a special admixture for fluidized solidified recycled mixture according to claim 1, characterized in that: In the raw material processing of step 2, the stirring speed provided by the stirrer used for dry mixing is 680-980r / min.

9. A method for preparing a special admixture for fluidized solidified recycled mixture according to any one of claims 1 to 8, characterized in that: The method for preparing a special admixture for fluidized solidified recycled mixture also includes: detecting key performance indicators of the admixture including water reduction rate, air entrainment amount, setting time and early strength.

10. A method for preparing a special admixture for fluidized solidified recycled mixture according to any one of claims 1 to 8, characterized in that: The method for preparing a special admixture for fluidized solidified recycled mixture also includes: adjusting the dosage of admixtures including water reducing agent, air entraining agent, early strength agent, curing agent and fluidity enhancer according to environmental factors of temperature and humidity.

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