CN114656178A - Cementing material and application thereof - Google Patents
Cementing material and application thereof Download PDFInfo
- Publication number
- CN114656178A CN114656178A CN202210267407.5A CN202210267407A CN114656178A CN 114656178 A CN114656178 A CN 114656178A CN 202210267407 A CN202210267407 A CN 202210267407A CN 114656178 A CN114656178 A CN 114656178A
- Authority
- CN
- China
- Prior art keywords
- parts
- aggregate
- stirring
- concrete
- cementing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
- C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a cementing material and application thereof, relating to the field of materials. The cementing material comprises: 18-22 parts of sulphoaluminate cement, 28-32 parts of blast furnace slag and 48-52 parts of phosphogypsum. The ecological concrete of the invention comprises: 38-85 parts of aggregate, 8-25 parts of cementing material, 2-6 parts of water, 0.1-0.5 part of reinforcing agent, 0.1-0.5 part of water reducing agent and 1-2 parts of anion powder. The cementing material can well reduce the pore alkalinity of concrete, ensure the normal growth of vegetation, meet the use requirements on strength, prolong the setting time and ensure the construction performance. The ecological concrete has low pore alkalinity and higher compressive strength, can effectively reduce the alkalinity to meet the living condition of organisms, and can also utilize industrial solid wastes in a large quantity to change waste into valuables.
Description
Technical Field
The invention relates to the field of materials, in particular to a cementing material and application thereof.
Background
The research and application of the ecological concrete are rapidly developed, and the ecological concrete plays a positive role in resource development and environmental management. However, the pore liquid alkalinity of the existing portland cement concrete material is higher, the pH value is more than 13, most of terrestrial and aquatic animals and plants live in neutral or alkalescent environment, the alkalinity of the concrete needs to be reduced for improving the biocompatibility of the concrete, but the mechanical property and durability of the concrete are possibly deteriorated due to the excessively low alkalinity, so that the strength is insufficient, and the application of the ecological concrete is limited. The existing ecological concrete can not integrate multiple functions, can not meet the requirements of plant growth under the condition of ensuring that the requirement of strength can be met, and also has the requirement of environmental protection function of harmful ion adsorption, so that the ecological concrete has certain restriction on a large scale from land to the shoal of rivers, lakes and seas.
Disclosure of Invention
Aiming at the technical problems, the invention provides the cementing material which can well reduce the pore alkalinity of concrete, ensure that vegetation can normally grow, ensure that the strength meets the use requirement, prolong the setting time and ensure the construction performance.
In order to achieve the purpose, the invention provides a cementing material which comprises the following raw materials in parts by weight:
18-22 parts of sulphoaluminate cement
28-32 parts of blast furnace slag
48-52 parts of phosphogypsum.
The inventor finds that the sulphoaluminate cement has low alkalinity and the pH value of the sulphoaluminate cement is about 10.5-11, so that the alkalinity of pores of concrete can be well reduced, and the normal growth of vegetation can be ensured; the blast furnace slag can improve the later strength of the concrete and make up for the defect of insufficient later strength of the sulphoaluminate cement; the ardealite serving as a retarder can delay the setting time of the sulphoaluminate cement and ensure the construction performance, so that the low-alkalinity composite cementing material is prepared by adopting the raw materials in parts by weight.
In one embodiment, the cementing material comprises the following raw materials in parts by weight:
20 portions of sulphoaluminate cement
Blast furnace slag 30 parts
50 parts of phosphogypsum.
The cementing material prepared by the weight ratio has the best effect and low alkalinity, and the strength meets the use requirement.
In one embodiment, the strength of the sulphoaluminate cement is 40-45MPa, the blast furnace slag is granulated blast furnace slag powder, and the specific surface area of the granulated blast furnace slag powder is 350-450m2/kg。
By adopting the raw materials, the defect of insufficient strength due to large porosity can be overcome, so that the prepared ecological concrete has higher strength; meanwhile, as the slag powder has strong activity, the concrete can keep better workability and fluidity and can better improve the later strength of the concrete.
The invention also provides ecological concrete which comprises the following raw materials in parts by weight: 38-85 parts of aggregate, 8-25 parts of cementing material, 2-6 parts of water, 0.1-0.5 part of reinforcing agent, 0.1-0.5 part of water reducing agent and 1-2 parts of anion powder.
By adopting the raw materials in parts by weight, the ecological concrete with low pore alkalinity and high compressive strength can be obtained, the strength can be ensured, the alkalinity of the cementing material can be effectively reduced to meet the living condition of organisms, a large amount of industrial solid wastes can be utilized, and waste materials are changed into valuable materials; meanwhile, a small amount of tourmaline negative ion powder is doped, the tourmaline negative ion powder has the physical characteristics of piezoelectricity and pyroelectric effect, harmful ions are adsorbed to a crystal cathode through an electrostatic field on the surface of the crystal, the concentration of local harmful ions is increased, the tourmaline negative ion powder reacts with the tourmaline surface through radical dissociation to form various precipitates or basic salts, and when the concentrations of various ions in a solution reach balance, the reaction is not continued any more, so that the excessive treatment problem is avoided, and the negative effect is avoided.
In one embodiment, the aggregate is fine stone with a particle size of 3-5 mm.
The fine stones with the particle sizes can ensure that the water permeability coefficient of the concrete is more than 1mm/s and can also ensure that the concrete can meet certain strength.
In one embodiment, the reinforcing agent is a resin reinforcing agent.
In one embodiment, the water reducing agent is a polycarboxylic acid compound water reducing agent, the water reducing rate is 20% -30%, and the net slurry fluidity is 260-300 mm.
The reinforcing agent in the raw materials can further increase the strength of the concrete, and the polycarboxylic acid compound water reducing agent can well adjust the working state of the concrete without reducing the strength.
In one embodiment, the anion powder is tourmaline powder, the fineness of the tourmaline powder is 7000-9000 meshes, and the anion release amount is more than or equal to 5000/cm3。
The raw materials have the advantages of releasing a large amount of negative ions to form an electric field, thereby adsorbing heavy metals.
The invention also provides a preparation method of the ecological concrete, which comprises the following steps:
preparing a cementing material: weighing raw materials, and mixing to obtain a cementing material;
preparing ecological concrete: and mixing the first aggregate and the cementing material, adding the rest aggregate, carrying out first stirring, adding water and a water reducing agent, carrying out second stirring, adding a reinforcing agent and anion powder, and carrying out third stirring to obtain the ecological concrete.
The preparation method is simple and easy to implement, can be quickly mixed on site and directly poured, and the formed porous functional concrete has higher compressive strength and alkalinity lower than 9 and has the function of environmental pollution treatment; in the step of preparing the ecological concrete, a part of aggregate and the cementing material are mixed firstly, and the rest of aggregate is added, so that the dispersion effect of the operation is better.
In one embodiment, the weight part ratio of the first aggregate to the aggregate is 0.8-1.2:2, the stirring time of the first stirring is 25-35s, the stirring time of the second stirring is 25-35s, and the stirring time of the third stirring is 3-6 min.
Compared with the prior art, the invention has the following beneficial effects:
the cementing material can well reduce the pore alkalinity of concrete, ensure that vegetation can normally grow, meet the use requirement of strength, prolong the setting time and ensure the construction performance of the vegetation. The ecological concrete prepared by the cementing material has low pore alkalinity and higher compressive strength, can effectively reduce the alkalinity to meet the living condition of organisms, and can also utilize industrial solid wastes in a large amount to change waste into valuables; the concrete can be directly applied to beaches such as rivers, lakes and seas or roads, can meet the greening requirement, can permeate water and adsorb harmful ions, has certain strength, and integrates multiple functions.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the accompanying examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Blast furnace slag: is a waste slag discharged from a blast furnace when smelting pig iron.
Phosphogypsum: is solid waste generated in the wet-process phosphoric acid process.
Aggregate: also called aggregate, one of the main constituent materials of concrete.
The source is as follows:
resin binder (Guangzhou Meiqiao resin binder) and polycarboxylic acid high-efficiency composite water reducing agent (great polycarboxylic acid high-efficiency composite water reducing agent).
Reagents, materials and equipment used in the embodiment are all commercially available sources unless otherwise specified; unless otherwise specified, all the experimental methods are routine in the art.
The raw material components and weights in the following examples and comparative examples are shown in the following table:
TABLE 1 raw material composition, weight and parts by weight of each example and comparative example
Example 1
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 2:3:5 to obtain the cementing material.
The strength of the sulphoaluminate cement is 42.5MPa, and the specific surface area of the granulated blast furnace slag powder is more than 400m2/kg S95 ground granulated blast furnace slag powder.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing material, 106kg of water consumption, 3kg of reinforcing agent, 7.1kg of water reducing agent and 19kg of anion powder.
In this embodimentThe aggregate is fine stone with the grain diameter range of 3-5mm, the mud content and the mud block content of the aggregate meet the requirement of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirement of permeable cement concrete pavement technical code CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the reinforcing agent is a resin binder and meets the requirement of the technical index of the reinforcing agent in CJJT135-2009, technical Specification of permeable cement concrete pavements; the anion powder is 8000 meshes tourmaline anion powder, and the release amount of anions is more than or equal to 5000/cm3。
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent and the anion powder, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Example 2
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 2:3:5 to obtain the cementing material.
The strength of the sulphoaluminate cement is 42.5MPa, and the specific surface area of the granulated blast furnace slag powder is more than 400m2/kg S95 ground granulated blast furnace slag powder.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate dosage, 380kg of cementing materials, 106kg of water consumption, 6kg of reinforcing agents, 7.1kg of water reducing agents and 38kg of anion powder.
In the embodiment, the aggregate is fine stone with the grain diameter ranging from 3 mm to 5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirements of the technical code of permeable cement concrete pavements CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the enhancer is treeThe grease binder meets the requirement of technical indexes of reinforcing agents in the technical code of permeable cement concrete pavement CJJT 135-2009; the anion powder is 8000 meshes tourmaline anion powder, and the release amount of anions is more than or equal to 5000 anions/cm3。
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent and the anion powder, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Comparative example 1
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 2:3:5 to obtain the cementing material.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing material, 106kg of water consumption, 7.1kg of water reducing agent, and no reinforcing agent or negative ion powder.
In the embodiment, the aggregate is fine stone with the grain diameter ranging from 3 mm to 5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirements of the technical code of permeable cement concrete pavements CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm.
(2) And adding half of the aggregate into a stirring pot, adding a cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and a water reducing agent, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Comparative example 2
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 2:3:5 to obtain the cementing material.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing materials, 106kg of water consumption, 6kg of reinforcing agents and 7.1kg of water reducing agents, and no negative ion powder is added.
In the embodiment, the aggregate is fine stone with the grain diameter ranging from 3 mm to 5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirements of the technical code of permeable cement concrete pavements CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the reinforcing agent is a resin binder and meets the requirement of the technical index of the reinforcing agent in CJJT135-2009, technical Specification of permeable cement concrete pavements.
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Comparative example 3
Preparing the ecological concrete.
1. Preparing the gelled material.
And mixing the Portland cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 2:3:5 to obtain the cementing material.
The strength of the portland cement is 42.5MPa, and the specific surface area of the granulated blast furnace slag powder is more than 400m2/kg S95 ground granulated blast furnace slag powder.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing material, 106kg of water consumption, 3kg of reinforcing agent, 7.1kg of water reducing agent and 19kg of anion powder.
In the embodiment, the aggregate is fine stone with the particle size range of 3-5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and rubbles for buildings GB/T14685 on class II rubbles, and the aggregate conforms to the technology of permeable cement concrete pavementAggregate requirements in regulation CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the reinforcing agent is a resin binder and meets the requirement of the technical index of the reinforcing agent in CJJT135 & 2009 permeable cement concrete pavement technical Specification; the anion powder is 8000 meshes tourmaline anion powder, and the release amount of anions is more than or equal to 5000/cm3。
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent and the anion powder, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Comparative example 4
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the fly ash and the phosphogypsum in a weight ratio of 2:3:5 to obtain the cementing material.
The strength of the sulphoaluminate cement is 42.5MPa, and the specific surface area of the granulated blast furnace slag powder is more than 400m2/kg S95 ground granulated blast furnace slag powder.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing material, 106kg of water consumption, 3kg of reinforcing agent, 7.1kg of water reducing agent and 19kg of anion powder.
In the embodiment, the aggregate is fine stone with the grain diameter ranging from 3 mm to 5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirements of the technical code of permeable cement concrete pavements CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the reinforcing agent is a resin binder and meets the requirements of the technical index of the reinforcing agent in CJJT135-2009, technical Specification of pervious cement concrete pavements; the anion powder is 8000 meshes tourmaline anion powder, and the release amount of anions is more than or equal to 5000/cm3。
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent and the anion powder, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Comparative example 5
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 2:2:6 to obtain the cementing material.
The strength of the sulphoaluminate cement is 42.5MPa, and the specific surface area of the granulated blast furnace slag powder is more than 400m2/kg S95 ground granulated blast furnace slag powder.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing material, 106kg of water consumption, 3kg of reinforcing agent, 7.1kg of water reducing agent and 19kg of anion powder.
In the embodiment, the aggregate is fine stone with the grain diameter ranging from 3 mm to 5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirements of the technical code of permeable cement concrete pavements CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the reinforcing agent is a resin binder and meets the requirement of the technical index of the reinforcing agent in CJJT135-2009, technical Specification of permeable cement concrete pavements; the anion powder is 8000 meshes tourmaline anion powder, and the release amount of anions is more than or equal to 5000/cm3。
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent and the anion powder, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Comparative example 6
Preparing the ecological concrete.
1. Preparing the gelled material.
Mixing the sulphoaluminate cement, the granulated blast furnace slag powder and the phosphogypsum in a weight ratio of 3:2:5 to obtain the cementing material.
The strength of the sulphoaluminate cement is 42.5MPa, and the specific surface area of the granulated blast furnace slag powder is more than 400m2/kg S95 ground granulated blast furnace slag powder.
2. And preparing the ecological concrete.
(1) Weighing the following raw materials in parts by weight: 1529kg of aggregate, 380kg of cementing material, 106kg of water consumption, 3kg of reinforcing agent, 7.1kg of water reducing agent and 19kg of anion powder.
In the embodiment, the aggregate is fine stone with the grain diameter ranging from 3 mm to 5mm, the mud content and the mud block content of the aggregate meet the requirements of pebbles and gravels for buildings GB/T14685 on the class II gravels, and meet the aggregate requirements of the technical code of permeable cement concrete pavements CJJT 135-2009; the water reducing agent is a polycarboxylic acid high-efficiency composite water reducing agent, the water reducing efficiency is about 25%, and the net slurry fluidity is 280 mm; the reinforcing agent is a resin binder and meets the requirement of the technical index of the reinforcing agent in CJJT135-2009, technical Specification of permeable cement concrete pavements; the anion powder is 8000 meshes tourmaline anion powder, and the release amount of anions is more than or equal to 5000/cm3。
(2) And adding half of the aggregate into a stirring pot, adding the cementing material into the stirring pot, adding the rest aggregate into the stirring pot, stirring for 30s, adding water and the water reducing agent, stirring for 30s, adding the reinforcing agent and the anion powder, stirring for 30s, and continuously stirring for 3-5min to obtain the ecological concrete.
Examples of the experiments
1. And (3) carrying out performance test on the ecological concrete obtained in each example and comparative example.
The test method of each performance index is as follows:
(1) test for harmful ion removal conditions: mainly adopting copper ions and methylene blue ions for testing, wherein the copper ions adopt a copper ion solution (100mg/L) to filter concrete for three times, testing the content of residual copper ions in filtrate, and calculating the residual copper ions and the original solution concentration to obtain the removal rate; the methylene blue ion is obtained by soaking concrete in methylene blue solution (15mg/L) for 24h, testing the content of the methylene blue ion in the soaked solution, and calculating the removal rate with the original solution concentration.
(2) Test methods for 7-day strength, 28-day strength: and testing according to the standard of concrete physical and mechanical property test method GB-T50081-2019.
(3) Test method of pH: crushing concrete, removing stones, drying in an oven at 65 ℃ for 24h (hydration is not stopped before drying because experiments prove that the measured pH value of the cement paste is reduced by 1-2 after hydration is stopped by using acetone and is far smaller than the normal value), taking out, grinding into fine powder, sieving by using a 0.08mm square-hole sieve, weighing 3g of sieved powder, weighing three samples according to each mixing ratio, adding 30ml of water according to the solid-liquid ratio of 10:1, stirring for 30min, standing for 12h, and finally detecting the pH value of a supernatant by using a pH meter.
(4) The method for testing the release amount of the negative ions comprises the following steps: and in the enclosed space, a COM-3200PRO II negative ion detector is adopted to test the negative ion release amount of the negative ion powder and the functional concrete.
(5) The method for testing the water permeability coefficient comprises the following steps: the method is carried out according to appendix A of CJJT135-2009 of technical Specification for permeable cement concrete pavements.
(6) The porosity testing method comprises the following steps: the method is carried out according to appendix A of recycled aggregate pervious concrete application technical specifications.
The results are shown in the following table: the pH value of the ecological concrete prepared in each embodiment is less than 9, the compressive strength of the concrete is more than 25MPa, the porosity is large, and the ecological concrete is suitable for plant growth and has good harmful ion adsorption performance.
TABLE 2 test data of eco-concrete of each example and comparative example
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The cementing material is characterized by comprising the following raw materials in parts by weight:
18-22 parts of sulphoaluminate cement
28-32 parts of blast furnace slag
48-52 parts of phosphogypsum.
2. The cement material as claimed in claim 1, wherein the cement material comprises the following raw materials in parts by weight:
20 portions of sulphoaluminate cement
Blast furnace slag 30 parts
50 parts of phosphogypsum.
3. The cementitious material as claimed in claim 1, wherein the strength of the sulphoaluminate cement is 40-45MPa, the blast furnace slag is granulated blast furnace slag powder, and the specific surface area of the granulated blast furnace slag powder is 350-450m2/kg。
4. The ecological concrete is characterized by comprising the following raw materials in parts by weight: 38-85 parts of aggregate, 8-25 parts of the cementing material of any one of claims 1-3, 2-6 parts of water, 0.1-0.5 part of reinforcing agent, 0.1-0.5 part of water reducing agent and 1-2 parts of anion powder.
5. The eco-concrete according to claim 4, wherein the aggregate is fine stone having a particle size of 3-5 mm.
6. The eco-concrete according to claim 4, wherein the reinforcing agent is a resin reinforcing agent.
7. The ecological concrete as claimed in claim 4, wherein the water reducing agent is a polycarboxylic acid composite water reducing agent, the water reducing rate is 20-30%, and the net slurry fluidity is 260-300 mm.
8. The ecological concrete as claimed in claim 4, wherein the anion powder is tourmaline powder, the fineness of the tourmaline powder is 7000-9000 meshes, and the anion release amount is not less than 5000/cm3。
9. The method for preparing eco-concrete according to any one of claims 4 to 8, wherein the method comprises the steps of:
preparing a cementing material: weighing raw materials, and mixing to obtain a cementing material;
preparing ecological concrete: and mixing the first aggregate and the cementing material, adding the rest aggregate, carrying out first stirring, adding water and a water reducing agent, carrying out second stirring, adding a reinforcing agent and anion powder, and carrying out third stirring to obtain the ecological concrete.
10. The method according to claim 9, wherein the weight ratio of the first aggregate to the aggregate is 0.8-1.2:2, the stirring time of the first stirring is 25-35s, the stirring time of the second stirring is 25-35s, and the stirring time of the third stirring is 3-6 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210267407.5A CN114656178B (en) | 2022-03-18 | 2022-03-18 | Cementing material and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210267407.5A CN114656178B (en) | 2022-03-18 | 2022-03-18 | Cementing material and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114656178A true CN114656178A (en) | 2022-06-24 |
| CN114656178B CN114656178B (en) | 2023-05-02 |
Family
ID=82030123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210267407.5A Active CN114656178B (en) | 2022-03-18 | 2022-03-18 | Cementing material and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114656178B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385640A (en) * | 2022-08-15 | 2022-11-25 | 同济大学 | High-aluminum solid waste based cementing material for antibacterial sewage pipeline and application thereof |
| CN116514507A (en) * | 2023-04-04 | 2023-08-01 | 华南理工大学 | Ecological concrete and preparation method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745971A (en) * | 2012-07-18 | 2012-10-24 | 济南大学 | Low-alkalinity ecological concrete and preparation method thereof |
| CN103466975A (en) * | 2013-08-11 | 2013-12-25 | 济南大学 | Low-alkalinity gelling material suitable for planting concrete |
| BE1021721B1 (en) * | 2013-05-08 | 2016-01-12 | Devarec-Eco2 Beton, Besloten Vennootschap Met Beperkte Aansprakelijkheid | BUILDING MATERIAL AND METHOD OF MANUFACTURING |
| CN106242446A (en) * | 2016-08-15 | 2016-12-21 | 马鞍山十七冶工程科技有限责任公司 | A kind of low alkalinity gel material and preparation method thereof |
| CN108558336A (en) * | 2018-01-12 | 2018-09-21 | 广东省建筑科学研究院集团股份有限公司 | A kind of plant growth pervious concrete of high-performance |
| CN109704704A (en) * | 2018-11-30 | 2019-05-03 | 咸阳非金属矿研究设计院有限公司 | A kind of environment-friendly type air-entrained concrete building block and preparation method thereof |
| CN112759343A (en) * | 2020-12-31 | 2021-05-07 | 山东大学 | Solid waste based low-alkalinity porous ecological pervious concrete and preparation method thereof |
| CN113277759A (en) * | 2021-06-18 | 2021-08-20 | 嘉华特种水泥股份有限公司 | Titanium slag-based solid waste cementing material and preparation method thereof |
-
2022
- 2022-03-18 CN CN202210267407.5A patent/CN114656178B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745971A (en) * | 2012-07-18 | 2012-10-24 | 济南大学 | Low-alkalinity ecological concrete and preparation method thereof |
| BE1021721B1 (en) * | 2013-05-08 | 2016-01-12 | Devarec-Eco2 Beton, Besloten Vennootschap Met Beperkte Aansprakelijkheid | BUILDING MATERIAL AND METHOD OF MANUFACTURING |
| CN103466975A (en) * | 2013-08-11 | 2013-12-25 | 济南大学 | Low-alkalinity gelling material suitable for planting concrete |
| CN106242446A (en) * | 2016-08-15 | 2016-12-21 | 马鞍山十七冶工程科技有限责任公司 | A kind of low alkalinity gel material and preparation method thereof |
| CN108558336A (en) * | 2018-01-12 | 2018-09-21 | 广东省建筑科学研究院集团股份有限公司 | A kind of plant growth pervious concrete of high-performance |
| CN109704704A (en) * | 2018-11-30 | 2019-05-03 | 咸阳非金属矿研究设计院有限公司 | A kind of environment-friendly type air-entrained concrete building block and preparation method thereof |
| CN112759343A (en) * | 2020-12-31 | 2021-05-07 | 山东大学 | Solid waste based low-alkalinity porous ecological pervious concrete and preparation method thereof |
| CN113277759A (en) * | 2021-06-18 | 2021-08-20 | 嘉华特种水泥股份有限公司 | Titanium slag-based solid waste cementing material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385640A (en) * | 2022-08-15 | 2022-11-25 | 同济大学 | High-aluminum solid waste based cementing material for antibacterial sewage pipeline and application thereof |
| CN116514507A (en) * | 2023-04-04 | 2023-08-01 | 华南理工大学 | Ecological concrete and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114656178B (en) | 2023-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114656178B (en) | Cementing material and application thereof | |
| CN102276128B (en) | Treatment method of dehydrated sludge in domestic sewage treatment plant | |
| CN105753279B (en) | A kind of silt/sludge solidifying agent and its application method | |
| CN111205035B (en) | Backfill prepared from red mud and wastewater as well as preparation method and application thereof | |
| CN113045119A (en) | Sludge-based ecological bank protection matrix material with biological affinity and preparation method thereof | |
| KR100873996B1 (en) | Porous greening vegetation block for liver ecosystem protection | |
| CN113185980A (en) | Lead-polluted soil curing agent combining red mud, carbide slag and phosphogypsum and preparation method thereof | |
| CN110330287A (en) | A kind of regeneration brick aggregate pervious concrete and preparation method thereof | |
| CN109574582A (en) | A kind of pervious concrete and preparation method thereof with absorption heavy metal ion ability | |
| CN105130349A (en) | Foundation pit engineering waterproof curtain material based on industrial waste residue | |
| CN105084838B (en) | Pervious concrete for highway engineering | |
| CN110104916B (en) | Sludge curing agent and preparation method thereof | |
| CN107473660A (en) | A kind of building block of high intensity sulfurizing iron tailing concrete and its preparation and application | |
| CN112759343B (en) | Solid waste based low-alkalinity porous ecological pervious concrete and preparation method thereof | |
| CN111661993A (en) | Sludge curing agent and preparation method and use method thereof | |
| WO2023226321A1 (en) | Modified municipal sludge for landfill covering and preparation method therefor | |
| CN111517439A (en) | Compound phosphorus removal material based on collophanite and application method thereof | |
| JP2001113165A (en) | Adsorbent | |
| CN114085054B (en) | Method for preparing functional water permeable material by using multi-source solid waste | |
| CN111393095A (en) | Pervious concrete and preparation method thereof | |
| CN109137675A (en) | A kind of pavement system removing city surface source pollution | |
| CN113248075A (en) | Preparation and use method of wetland filler | |
| CN108373296B (en) | Method for preparing novel water permeable brick by using river bottom mud | |
| Chen et al. | Effects of Diatomite on the Physiological and Purification Performance of Diatomite-Zeolite Vegetation Concrete | |
| CN107803063B (en) | Steel slag filter material for sponge city construction and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |