CN112723834B - Sea sand interlocking block for port storage yard and preparation method thereof - Google Patents
Sea sand interlocking block for port storage yard and preparation method thereof Download PDFInfo
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- 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
- C04B28/04—Portland cements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/10—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form each charge of material being compressed against previously formed body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/14—Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
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- 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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
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- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
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- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Structural Engineering (AREA)
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- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Sea sand interlocking block for port storage yard relates to the technical field of ocean engineering material, in particular to sea sand interlocking block for port storage yard and a preparation method thereof. The mortar is characterized by comprising a concrete layer and a mortar surface layer covered on the concrete layer, wherein each cubic weight of the concrete layer contains the following components: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent; the mortar surface layer comprises the following components in parts by weight per cubic meter: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder. The invention has the advantages of solving the problems of high mud content and high salt content of the sea sand and improving the quality of the construction engineering.
Description
Technical Field
The invention relates to the technical field of ocean engineering materials, in particular to a sea sand interlocking block for a port yard and a preparation method thereof.
Background
The cement concrete interlocking block pavement is a novel pavement form, is introduced into China in the middle of the 80 s of the 20 th century, has the characteristics of strong bearing, difficult deformation, strong skid resistance and the like, and has been widely applied to yard projects of ports and wharfs. With the exhaustion of river sand resources, the rational utilization of sea sand resources is more and more emphasized. China's coastline is lengthy, has a large number of ports, has the sediment siltation problem every year, directly influences the safe operation at port, in order to guarantee the sufficient depth of water of channel, all carry out a large amount of dredging operations every year, the sea sand of dredging is mostly long-term siltation sea sand, have the problem that mud content, salt content are high, high mud content and salt content directly influence the construction engineering quality, have hindered its application in the construction engineering.
Disclosure of Invention
The invention aims to provide a sea sand interlocking block for a port yard and a preparation method thereof, so as to achieve the purposes of solving the problems of high mud content and high salt content of sea sand and improving the quality of constructional engineering.
The sea sand interlocking block for the port yard is characterized by comprising a concrete layer and a mortar surface layer covered on the concrete layer, wherein each cubic weight of the concrete layer contains the following components: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder.
Further, the soil dispersing agent is any one or more of sodium polyacrylate, sodium hexametaphosphate, fatty alcohol-polyoxyethylene ether, sodium pyrophosphate and quaternary ammonium salt.
Further, the solid salt activator is any one or more of activated alumina, quicklime powder, vitrified micro-beads, fly ash, mineral powder and bentonite.
Further, the air entraining agent is any one or more of modified abietate, rosin resins, alkyl and alkyl aromatic sulfonic acid.
Furthermore, the sea sand in the concrete layer is medium sand, the fineness modulus is 2.0-2.8, the mud content is less than or equal to 10%, the crushing value is less than or equal to 20%, the mud block content is less than or equal to 0.5%, no mud block with the thickness of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1%; the stones are granite stones, the particle size is 10-30 mm, and the stones are continuously graded; the cement in the concrete layer is common 42.5 Portland cement; the water in the concrete layer is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 5 percent.
Further, the stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 15 percent, and the activity index of 28-32 days is more than or equal to 40 percent; the proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand.
Further, the fine sand of the mortar surface layer is sea sand or desalted sea sand, the mud content is less than or equal to 2%, the salt content is less than or equal to 0.1%, and the particle size is less than or equal to 0.63 mm; the steel slag powder is obtained by crushing and grinding steel slag which is a steelmaking waste, and the particle size is less than or equal to 0.3 mm; the water of the mortar surface layer is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent; the rubber powder is water-based instant building rubber powder.
A preparation method of a sea sand interlocking block for a port yard is characterized by comprising the following steps:
step 1, mixing the following components in parts by weight of a concrete layer: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent, weighing, sequentially loading into a mixer, uniformly mixing, discharging the concrete layer mixture, and controlling the slump of the concrete layer mixture to be 10-30 mm;
step 2, loading the concrete layer mixture obtained in the step 1 into a pressing vibration die for pressing vibration to form a concrete block;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder, weighing, uniformly stirring, and discharging the mixture of the mortar surface layer;
step 4, adding the mortar surface layer mixture obtained in the step 3 on the surface of the concrete block which is subjected to pressure vibration molding in the step 2, continuing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 1.5-2.5 mm;
and 5, demolding the blank of the sea sand interlocking block obtained in the step 4, and maintaining for 28-32 days to obtain the sea sand interlocking block.
Further, the pressure vibration pressure of the step 2 is 70-90 KN, the pressure vibration frequency is controlled to be 4000-4500 times/minute, and the pressure vibration time is controlled to be 4-8 s; and (4) controlling the pressure vibration pressure of the step (4) to be 75-85 KN, controlling the pressure vibration frequency to be 4200-4400 times per minute, and controlling the pressure vibration time to be 2-4 s.
Further, the stirring time in the step 1 is controlled to be 40-50 s, and the stirring time in the step 3 is controlled to be 28-32 s.
The invention provides a sea sand interlocking block for a port yard and a preparation method thereof, and the innovation points and the beneficial effects are mainly embodied in the following aspects:
1. the solid salt activator mainly plays a role in participating in cement hydration reaction, increasing the strength of the interlocking blocks, reducing the porosity of concrete, reducing the internal resistance of the concrete, enabling the interior of the concrete to be more compact and reducing the alkali return. The hydrated calcium aluminate generated by cement can be mixed with Cl in sea sand-Friedel salt is produced, thereby acting to solidify a portion of the salt in the sea sand. The air entraining agent is mainly used for improving the freezing resistance of the interlocking block.
2. The stone powder is mainly used for filling the inner space of the concrete, reducing the porosity of the concrete, reducing the internal resistance of the concrete, enabling the inner part of the concrete to be more compact and being beneficial to improving the strength of the concrete.
3. The soil dispersing agent is preferentially adsorbed on the surface of soil, so that the soil is uniformly dispersed, and the influence of the soil on the adsorption of water and the strength of the interlocking block is reduced.
4. The steel slag powder mainly plays a role in resisting wear. The rubber powder is mainly used for increasing the binding force between the mortar surface layer and the concrete layer, increasing the viscosity of the mortar, preventing cracking and improving the appearance quality of the mortar surface layer.
The invention provides a sea sand interlocking block for a port yard and a preparation method thereof, wherein the prepared sea sand interlocking block for the port yard has the following test results:
various experimental researches show that the strength of the sea sand interlocking block for the port yard and the sea sand interlocking block produced by the preparation method provided by the invention is improved by 28% compared with the traditional stone powder sand interlocking block, and the strength loss of 35 times is obviously reduced compared with the traditional stone powder sand interlocking block. Meanwhile, the use of the sea sand improves the water absorption performance of the interlocking block, and does not greatly influence the appearance and the thickness of the interlocking block. According to the sea sand interlocking block for the port yard and the preparation method thereof, provided by the invention, the port dredged sea sand is used as the fine aggregate production interlocking block, the problems of high mud content and high salt content of the sea sand are solved by optimizing the mixing proportion and using the mud dispersing agent and the salt fixing agent, the ocean resources can be utilized to the maximum extent, the port construction requirements are met, and great economic and social benefits are achieved. Therefore, the invention has the positive effects of solving the problems of high mud content and high salt content of the sea sand and improving the quality of the construction engineering.
Detailed Description
The invention is further illustrated by the following examples.
Example 1:
the sea sand interlocking block for the port yard comprises a concrete layer and a mortar surface layer covered on the concrete layer, wherein the concrete layer comprises the following components in parts by weight per cubic meter: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder.
A preparation method of sea sand interlocking blocks for port storage yards comprises the following steps:
step 1, mixing the following components in parts by weight of a concrete layer: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent, weighing, sequentially loading into a mixer, controlling the mixing time to be 40-50 s, discharging the concrete layer mixture after uniformly mixing, and controlling the slump of the concrete layer mixture to be 10-30 mm;
step 2, loading the concrete layer mixture obtained in the step 1 into a pressing vibration die for pressing vibration, controlling the pressing vibration pressure to be 70-90 KN, controlling the pressing vibration frequency to be 4000-4500 times/minute, controlling the pressing vibration time to be 4-8 s, and pressing vibration to form a concrete block;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder, weighing, uniformly stirring, controlling the stirring time to be 28-32 s, and discharging the mixture of the mortar surface layer;
step 4, adding the mortar surface layer mixture obtained in the step 3 to the surface of the concrete block which is subjected to pressure vibration molding in the step 2, continuously performing pressure vibration, controlling the pressure vibration pressure to be 75-85 KN, controlling the pressure vibration frequency to be 4200-4400 times per minute, controlling the pressure vibration time to be 2-4 s, and performing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 1.5-2.5 mm;
and 5, demolding the blank of the sea sand interlocking block obtained in the step 4, and maintaining for 28-32 days to obtain the sea sand interlocking block.
The prepared sea sand interlocking block for the port yard has the following test results:
the sea sand in the concrete layer is medium sand, the fineness modulus is 2.0-2.8, the mud content is less than or equal to 10%, the crushing value is less than or equal to 20%, the mud block content is less than or equal to 0.5%, no mud block with the size of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1%. The stones are granite stones, the particle size is 10-30 mm, and the stones are continuously graded. The cement is ordinary 42.5 portland cement. The water is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 5 percent. The hydrated calcium aluminate generated by cement can be mixed with Cl in sea sand-Friedel salt is produced, thereby acting to solidify a portion of the salt in the sea sand.
The stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 15 percent, and the activity index of 28-32 days is more than or equal to 40 percent. The proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand. The stone powder is mainly used for filling the inner space of the concrete, reducing the porosity of the concrete, reducing the internal resistance of the concrete, enabling the inner part of the concrete to be more compact and being beneficial to improving the strength of the concrete.
The soil dispersing agent is any one or more of sodium polyacrylate, sodium hexametaphosphate, fatty alcohol-polyoxyethylene ether, sodium pyrophosphate and quaternary ammonium salt. The soil dispersing agent is preferentially adsorbed on the surface of soil, so that the soil is uniformly dispersed, and the influence of the soil on the adsorption of water and the strength of the interlocking block is reduced.
The solid salt activator is any one or more of activated alumina, quicklime powder, vitrified micro bubbles, fly ash, mineral powder and bentonite. The solid salt activator mainly plays a role in participating in cement hydration reaction, increasing the strength of the interlocking blocks, reducing the porosity of concrete, reducing the internal resistance of the concrete, enabling the interior of the concrete to be more compact and reducing the alkali return.
The air entraining agent is any one or more of modified abietate, rosin resins, alkyl and alkyl aromatic sulfonic acid, and is mainly used for improving the freezing resistance of the interlocking block.
The fine sand of the mortar surface layer is sea sand or desalted sea sand, the mud content is less than or equal to 2 percent, the salt content is less than or equal to 0.1 percent, and the particle size is less than or equal to 0.63 mm. The steel slag powder is obtained by crushing and grinding steel slag which is a waste of steel making, the particle size is less than or equal to 0.3mm, and the steel slag powder mainly plays a role in wear resistance. The water is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent. The rubber powder is water-based instant building rubber powder, and is mainly used for increasing the binding force between a mortar surface layer and a concrete layer, increasing the viscosity of the mortar, preventing cracking and improving the apparent quality of the mortar surface layer.
Example 2:
the sea sand interlocking block for the port yard comprises a concrete layer and a mortar surface layer covered on the concrete layer, wherein the concrete layer comprises the following components in parts by weight per cubic meter: 850kg of sea sand, 860kg of stones, 340kg of cement, 150kg of water, 65kg of stone powder, 15kg of soil dispersant, 100kg of solid salt activator and 2kg of air entraining agent;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1200kg of fine sand, 280kg of cement, 150kg of steel slag powder, 180kg of water and 0.5kg of rubber powder.
A preparation method of a sea sand interlocking block for a port yard comprises the following steps:
step 1, mixing the following components in parts by weight of a concrete layer: 850kg of sea sand, 860kg of stones, 340kg of cement, 150kg of water, 65kg of stone powder, 15kg of sodium hexametaphosphate, 20kg of activated alumina, 20kg of vitrified micro bubbles, 60kg of fly ash and 2kg of rosin resin air entraining agent, the materials are weighed and then sequentially loaded into a stirrer, the stirring time is controlled for 45s, after the materials are uniformly stirred, the concrete layer mixture is discharged, and the slump of the concrete layer mixture is controlled to be 20-25 mm;
step 2, filling the concrete layer mixture obtained in the step 1 into a pressure vibration die for pressure vibration, controlling the pressure vibration pressure to be 80KN, controlling the pressure vibration frequency to be 4250 times/minute, controlling the pressure vibration time to be 5s, and pressing and vibrating the mixture into a concrete block;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1200kg of fine sand, 280kg of cement, 150kg of steel slag powder, 180kg of water and 0.5kg of 107 water-based instant building glue powder, weighing, uniformly stirring, controlling the stirring time for 30s, and discharging the mortar surface layer mixture;
step 4, adding the mortar surface layer mixture obtained in the step 3 to the surface of the concrete block which is formed by pressure vibration in the step 2, continuing pressure vibration, controlling the pressure vibration at 80KN, controlling the pressure vibration frequency at 4250 times/min, controlling the pressure vibration time at 2s, and performing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 2 mm;
and 5, demolding the blank of the sea sand interlocking block obtained in the step 4, and maintaining for 28-32 days to obtain the sea sand interlocking block.
The prepared sea sand interlocking block for the port yard has the following test results:
the sea sand in the concrete layer is medium sand, the fineness modulus is 2.5, the mud content is less than or equal to 8 percent, the crushing value is less than or equal to 15 percent, the mud block content is less than or equal to 0.4 percent, no mud block with the thickness of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1 percent. The stones are granite stones, the particle size is 15-20 mm, and the stones are continuously graded. The cement is ordinary 42.5 portland cement. The water is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 5 percent. The stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 15 percent, and the activity index of 28 days is more than or equal to 40 percent. The proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand.
The fine sand of the mortar surface layer is sea sand or desalted sea sand, the mud content is less than or equal to 1 percent, the salt content is less than or equal to 0.1 percent, and the grain diameter is less than or equal to 0.60 mm. The steel slag powder is obtained by crushing and grinding steel slag which is a waste of steel making, and the particle size is less than or equal to 0.2 mm. The water is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent.
Example 3:
the sea sand interlocking block for the port yard comprises a concrete layer and a mortar surface layer covered on the concrete layer, wherein the concrete layer comprises the following components in parts by weight per cubic meter: 800kg of sea sand, 940kg of stones, 320kg of cement, 130kg of water, 60kg of stone powder, 10kg of soil dispersant, 120kg of solid salt activator and 2kg of rosin resin air entraining agent;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1100kg of fine sand, 260kg of cement, 180kg of steel slag powder, 180kg of water and 1kg of rubber powder.
Step 1, mixing the following components in parts by weight of a concrete layer: 800kg of sea sand, 940kg of stones, 320kg of cement, 130kg of water, 60kg of stone powder, 10kg of fatty alcohol-polyoxyethylene ether, 120kg of solid salt activator (30 kg of activated alumina, 20kg of vitrified micro bubbles and 70kg of mineral powder), and 2kg of rosin resin air entraining agent, wherein the materials are weighed and then sequentially loaded into a mixer, the mixing time is controlled to be 44s, the concrete layer mixture is discharged after uniform mixing, and the slump of the concrete layer mixture is controlled to be 22-24 mm;
step 2, filling the concrete layer mixture obtained in the step 1 into a pressing vibration die for pressing vibration, controlling the pressing vibration frequency to be 4300 times/minute and the pressing vibration time to be 3s, and pressing and vibrating the mixture into a concrete block, wherein the pressing vibration pressure is 78 KN;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1100kg of fine sand, 260kg of cement, 180kg of steel slag powder, 180kg of water and 1kg of 107 aqueous instant building rubber powder, weighing, uniformly stirring, controlling the stirring time for 30s, and discharging the mortar surface layer mixture;
step 4, adding the mortar surface layer mixture obtained in the step 3 to the surface of the concrete block which is formed by pressure vibration in the step 2, continuing pressure vibration, controlling the pressure vibration at 80KN, controlling the pressure vibration frequency at 4250 times/min, controlling the pressure vibration time at 3s, and performing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 1.8 mm;
and 5, demolding the blank of the sea sand interlocking block obtained in the step 4, and maintaining for 32 days to obtain the sea sand interlocking block.
The prepared sea sand interlocking block for the port yard has the following test results:
the sea sand in the concrete layer is medium sand, the fineness modulus is 2.2-2.4, the mud content is less than or equal to 8%, the crushing value is less than or equal to 15%, the mud block content is less than or equal to 0.3%, no mud block with the size of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1%. The stones are granite stones, the particle size is 15-20 mm, and the stones are continuously graded. The cement is ordinary 42.5 portland cement. The water is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 4 percent.
The stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 12 percent, and the activity index of 28-32 days is more than or equal to 42 percent. The proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand.
The fine sand of the mortar surface layer is sea sand or desalted sea sand, the mud content is less than or equal to 2 percent, the salt content is less than or equal to 0.1 percent, and the particle size is less than or equal to 0.55 mm. The steel slag powder is obtained by crushing and grinding steel slag which is a waste of steel making, and the particle size is less than or equal to 0.2 mm. The water is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent.
Example 4:
the sea sand interlocking block for the port yard comprises a concrete layer and a mortar surface layer covered on the concrete layer, wherein the concrete layer comprises the following components in parts by weight per cubic meter: 850kg of sea sand, 880kg of stones, 320kg of cement, 130kg of water, 50kg of stone powder, 10kg of soil dispersant and 140kg of solid salt activator;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1100kg of fine sand, 260kg of cement, 180kg of steel slag powder, 180kg of water and 1kg of rubber powder.
A preparation method of a sea sand interlocking block for a port yard comprises the following steps:
step 1, mixing the following components in parts by weight of a concrete layer: 850kg of sea sand, 880kg of stones, 320kg of cement, 130kg of water, 50kg of stone powder, 10kg of fatty alcohol-polyoxyethylene ether and 140kg of solid salt activator (wherein 20kg of activated alumina, 20kg of vitrified micro bubbles, 50kg of fly ash and 50kg of mineral powder) are weighed and then sequentially loaded into a stirrer, the stirring time is controlled for 46s, after uniform stirring, the concrete layer mixture is discharged, and the slump of the concrete layer mixture is controlled to be 21-23 mm;
step 2, filling the concrete layer mixture obtained in the step 1 into a pressing vibration die for pressing vibration, controlling the pressing vibration frequency 4400 times/minute and the pressing vibration time 7s under the condition that the pressing vibration pressure is 78KN, and pressing and vibrating the mixture into a concrete block;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1100kg of fine sand, 260kg of cement, 180kg of steel slag powder, 180kg of water and 1kg of 107 aqueous instant building glue powder, weighing and uniformly stirring, controlling the stirring time for 29s, and discharging the mixture of the mortar surface layer;
step 4, adding the mortar surface layer mixture obtained in the step 3 to the surface of the concrete block which is subjected to pressure vibration molding in the step 2, continuously performing pressure vibration, controlling the pressure vibration at 85KN, controlling the pressure vibration frequency at 4230 times/minute, controlling the pressure vibration time at 3s, and performing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 2.1 mm;
and 5, demolding the sea sand interlocking block blank obtained in the step 4, and maintaining for 30 days to obtain the sea sand interlocking block.
The prepared sea sand interlocking block for the port yard has the following test results:
the sea sand in the concrete layer is medium sand, the fineness modulus is 2.2-2.4, the mud content is less than or equal to 7%, the crushing value is less than or equal to 16%, the mud block content is less than or equal to 0.4%, no mud block with the size of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1%. The stones are granite stones, the particle size is 12-16 mm, and the stones are continuously graded. The cement is ordinary 42.5 portland cement. The water is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 5 percent.
The stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 15 percent, and the activity index of 28-32 days is more than or equal to 40 percent. The proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand.
The fine sand of the mortar surface layer is sea sand or desalted sea sand, the mud content is less than or equal to 2 percent, the salt content is less than or equal to 0.1 percent, and the particle size is less than or equal to 0.50 mm. The steel slag powder is obtained by crushing and grinding steel slag which is a waste of steel making, and the particle size is less than or equal to 0.2 mm. The water is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent.
Example 5:
the sea sand interlocking block for the port yard comprises a concrete layer and a mortar surface layer covered on the concrete layer, wherein the concrete layer comprises the following components in parts by weight per cubic meter: 800kg of sea sand, 950kg of stones, 320kg of cement, 140kg of water, 60kg of stone powder, 15kg of soil dispersing agent, 100kg of solid salt activating agent and 2kg of air entraining agent;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1200kg of fine sand, 280kg of cement, 150kg of steel slag powder, 180kg of water and 0.5kg of rubber powder.
A preparation method of a sea sand interlocking block for a port yard comprises the following steps:
step 1, mixing the following components in parts by weight of a concrete layer: 800kg of sea sand, 950kg of stones, 320kg of cement, 140kg of water, 60kg of stone powder, 15kg of quaternary ammonium salt, 100kg of solid salt activator (20 kg of activated alumina, 30kg of vitrified micro bubbles and 50kg of fly ash) and 2kg of rosin resin air entraining agent are weighed and then sequentially put into a mixer, the mixing time is controlled to be 47s, after uniform mixing, the concrete layer mixture is discharged, and the slump of the concrete layer mixture is controlled to be 26-29 mm;
step 2, filling the concrete layer mixture obtained in the step 1 into a pressing vibration die for pressing vibration, controlling the pressing vibration frequency to be 4100 times/minute and the pressing vibration time to be 6s, and pressing vibration to form a concrete block, wherein the pressing vibration pressure is 82 KN;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1200kg of fine sand, 280kg of cement, 150kg of steel slag powder, 180kg of water and 0.5kg of 107 aqueous instant building glue powder, weighing and uniformly stirring, controlling the stirring time for 31s, and discharging the mixture of the mortar surface layer;
step 4, adding the mortar surface layer mixture obtained in the step 3 to the surface of the concrete block which is formed by pressure vibration in the step 2, continuously performing pressure vibration, controlling the pressure vibration pressure to be 81KN, controlling the pressure vibration frequency to be 4350 times/min, controlling the pressure vibration time to be 2s, and performing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 2 mm;
and 5, demolding the blank of the sea sand interlocking block obtained in the step 4, and maintaining for 29 days to obtain the sea sand interlocking block.
The prepared sea sand interlocking block for the port yard has the following test results:
the sea sand in the concrete layer is medium sand, the fineness modulus is 2.1-2.3, the mud content is less than or equal to 9%, the crushing value is less than or equal to 18%, the mud block content is less than or equal to 0.5%, no mud block with the size of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1%. The stones are granite stones, the particle size is 15-22 mm, and the stones are continuously graded. The cement is ordinary 42.5 portland cement. The water is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 5 percent.
The stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 15 percent, and the activity index of 28-32 days is more than or equal to 40 percent. The proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand.
The fine sand of the mortar surface layer is sea sand or desalted sea sand, the mud content is less than or equal to 2 percent, the salt content is less than or equal to 0.1 percent, and the particle size is less than or equal to 0.58 mm. The steel slag powder is obtained by crushing and grinding steel slag which is a waste of steel making, and the particle size is less than or equal to 0.2 mm. The water is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent.
Claims (7)
1. The sea sand interlocking block for the port yard is characterized by comprising a concrete layer and a mortar surface layer covered on the concrete layer, wherein each cubic weight of the concrete layer contains the following components: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent;
the mortar surface layer comprises the following components in parts by weight per cubic meter: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder;
the sea sand in the concrete layer is medium sand, the fineness modulus is 2.0-2.2, the mud content is less than or equal to 10%, the crushing value is less than or equal to 20%, the mud block content is less than or equal to 0.5%, no mud block with the size of more than or equal to 2mm exists, and the salt content is less than or equal to 0.1%;
the soil dispersing agent is any one or more of sodium polyacrylate, fatty alcohol-polyoxyethylene ether and quaternary ammonium salt;
the solid salt activator is any one or more of activated alumina, quicklime powder, mineral powder and bentonite;
the stone powder is granite stone powder, the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than or equal to 15 percent, and the activity index of 28-32 days is more than or equal to 40 percent; the proportion of the stone powder is calculated according to the mud content of the sea sand, and the mud content of the stone powder and the sea sand accounts for 12-18% of the mass of the sea sand.
2. The sea sand interlocking block for the port yard as claimed in claim 1, wherein the air entraining agent is any one or more selected from the group consisting of modified rosin acid salts, rosin resins, alkyl and alkyl aromatic sulfonic acids.
3. The sea sand interlocking block for the port yard as claimed in claim 1, wherein the stones are granite stones with a grain size of 12-30 mm and are continuously graded; the cement of the concrete layer is common 42.5 Portland cement; the water in the concrete layer is one or more of tap water, reclaimed water or seawater, and the salt content is less than or equal to 5 percent.
4. The sea sand interlocking block for the port yard according to claim 1, wherein the fine sand of the mortar surface layer is sea sand or desalinated sea sand, the mud content is less than or equal to 2%, the salt content is less than or equal to 0.1%, and the particle size is less than or equal to 0.63 mm; the steel slag powder is obtained by crushing and grinding steel slag which is a steelmaking waste, and the particle size is less than or equal to 0.3 mm; the water of the mortar surface layer is tap water or reclaimed water, and the salt content is less than or equal to 0.1 percent; the rubber powder is water-based instant building rubber powder.
5. The method for preparing the sea sand interlocking block for the port yard according to claim 1, comprising the steps of:
step 1, mixing the following components in parts by weight of a concrete layer: 800-950 kg of sea sand, 800-1100 kg of stones, 200-400 kg of cement, 100-150 kg of water, 50-150 kg of stone powder, 10-25 kg of soil dispersant, 80-150 kg of salt-fixing activator and 2-5 kg of air entraining agent, weighing, sequentially loading into a mixer, uniformly mixing, discharging the concrete layer mixture, and controlling the slump of the concrete layer mixture to be 10-30 mm;
step 2, loading the concrete layer mixture obtained in the step 1 into a pressing vibration die for pressing vibration to form a concrete block;
step 3, mixing the following components in parts by weight in the mortar surface layer: 1100-1400 kg of fine sand, 250-300 kg of cement, 100-180 kg of steel slag powder, 160-200 kg of water and 0.5-1 kg of rubber powder, weighing, uniformly stirring, and discharging the mixture of the mortar surface layer;
step 4, adding the mortar surface layer mixture obtained in the step 3 on the surface of the concrete block which is subjected to pressure vibration molding in the step 2, continuing pressure vibration to obtain a sea sand interlocking block blank, wherein the thickness of the mortar surface layer is 1.5-2.5 mm;
and 5, demolding the blank of the sea sand interlocking block obtained in the step 4, and maintaining for 28-32 days to obtain the sea sand interlocking block.
6. The preparation method of the sea sand interlocking block for the port yard according to claim 5, wherein the pressure vibration pressure in the step 2 is 70-90 KN, the pressure vibration frequency is controlled to be 4000-4500 times/min, and the pressure vibration time is controlled to be 4-8 s; and (4) controlling the pressure vibration pressure of the step (4) to be 75-85 KN, controlling the pressure vibration frequency to be 4200-4400 times per minute, and controlling the pressure vibration time to be 2-4 s.
7. The method for preparing the sea sand interlocking block for the port yard as claimed in claim 5, wherein the stirring time of step 1 is controlled for 40-50 s, and the stirring time of step 3 is controlled for 28-32 s.
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| CN116283159A (en) * | 2023-05-11 | 2023-06-23 | 连云港建港实业有限公司 | Process for preparing wear-resistant interlocking block by using iron ore screening material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921085A (en) * | 2009-06-12 | 2010-12-22 | 中冶建筑研究总院有限公司 | Cement-base wear-resistant material prepared from steel slag |
| CN102320794A (en) * | 2011-08-25 | 2012-01-18 | 暨南大学 | High-strength concrete prepared by sea sand |
| CN102491776A (en) * | 2011-11-11 | 2012-06-13 | 中冶宝钢技术服务有限公司 | Perforated brick including steel slag powder gelatificaiton material |
| CN102718430A (en) * | 2012-06-29 | 2012-10-10 | 山东华伟银凯建材科技股份有限公司 | Mud content inhibitor for concrete doped with polycarboxylic acid type water reducer and preparation method and application method of mud content inhibitor |
| CN106904911A (en) * | 2017-03-16 | 2017-06-30 | 海南瑞泽新型建材股份有限公司 | A kind of anti-corrosion maritime concrete of sea sand and preparation method thereof |
| AU2018101200A4 (en) * | 2018-08-19 | 2018-09-20 | Rodricks, Peter Anil MR | Production of environmentally sustainable bricks & blocks and plaster for construction from coastal desert sands and fly ash |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626910B (en) * | 2019-01-17 | 2021-10-15 | 长江大学 | Carbon fiber sea sand high-performance concrete material and preparation method thereof |
-
2021
- 2021-01-28 CN CN202110119739.4A patent/CN112723834B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921085A (en) * | 2009-06-12 | 2010-12-22 | 中冶建筑研究总院有限公司 | Cement-base wear-resistant material prepared from steel slag |
| CN102320794A (en) * | 2011-08-25 | 2012-01-18 | 暨南大学 | High-strength concrete prepared by sea sand |
| CN102491776A (en) * | 2011-11-11 | 2012-06-13 | 中冶宝钢技术服务有限公司 | Perforated brick including steel slag powder gelatificaiton material |
| CN102718430A (en) * | 2012-06-29 | 2012-10-10 | 山东华伟银凯建材科技股份有限公司 | Mud content inhibitor for concrete doped with polycarboxylic acid type water reducer and preparation method and application method of mud content inhibitor |
| CN106904911A (en) * | 2017-03-16 | 2017-06-30 | 海南瑞泽新型建材股份有限公司 | A kind of anti-corrosion maritime concrete of sea sand and preparation method thereof |
| AU2018101200A4 (en) * | 2018-08-19 | 2018-09-20 | Rodricks, Peter Anil MR | Production of environmentally sustainable bricks & blocks and plaster for construction from coastal desert sands and fly ash |
Non-Patent Citations (1)
| Title |
|---|
| 高强度联锁块混凝土配制技术;古茂金等;《中国港湾建设》;20121231(第6期);第2、3.1.4.1、3.2、4.1-4.2、5.1节 * |
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