CN104960086A - Production method of non-surplus-slurry and non-autoclaved prestressed concrete pipe pile - Google Patents
Production method of non-surplus-slurry and non-autoclaved prestressed concrete pipe pile Download PDFInfo
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- CN104960086A CN104960086A CN201510317683.8A CN201510317683A CN104960086A CN 104960086 A CN104960086 A CN 104960086A CN 201510317683 A CN201510317683 A CN 201510317683A CN 104960086 A CN104960086 A CN 104960086A
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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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
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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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
- B28B21/30—Centrifugal moulding
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a production method of a non-surplus-slurry and non-autoclaved prestressed concrete pipe pile, which comprises the following steps of preparing raw materials, performing material distribution, die assembly and tensioning treatment, performing low speed, low medium speed, medium speed and high speed centrifugation sequentially, and performing normal temperature steam curing, wherein in the step of preparing the raw materials, the raw materials consist of the following ingredients in parts by weight: 380-420 parts of cement, 80-120 parts of pulverized fuel ash, 650-790 parts of sand, 130-160 parts of water, 1050-1200 parts of gravel, 8-15 parts of novel polycarboxylate superplasticizer and 5-20 parts of excitant; in the step of the low speed centrifugation, a rotating speed is 70-75r/min and the time is 3-5min; in the step of the low medium speed centrifugation, the rotating speed is 120-140r/min and the time is 1.5-2.5min; in the step of the medium speed centrifugation, the rotating speed is set as 230-250r/min; in the step of the high speed centrifugation, the rotating speed is set as 450-550r/min; and the step of normal temperature steam curing comprises three stages, namely the heating stage, the constant temperature stage and the cooling stage. The production method can reduce the quantity of surplus slurry greatly, so that energy conservation and environmental protection are facilitated; the energy conservation and emission reduction are further realized only by an atmospheric pressure steam curing process; and the production method does not require solid microbead raw materials, so that the cost of the non-autoclaved prestressed concrete pipe pile is lowered greatly.
Description
Technical field
The invention belongs to pile tube production field, the production method of non-evaporating pressure prestressed concrete pipe pile is starched in especially a kind of nothing left.
Background technology
Prestressed concrete pipe pile has reliable in quality and the advantage such as to economize on resources, and is widely used in engineering construction.But existing technique does not also reach desirable effect, when centrifugal, a large amount of remaining slurries can be produced, containing moisture and gel component in these remaining slurries, the quality of finished product pile tube can be affected.Meanwhile, existing production technology needs and high-pressure steaming and cultivating two processes steam-cured through normal pressure, needs to consume a large amount of energy.For the problems referred to above, technical staff improves, and for the former, existing main method adds tackifier in the feed, and for the latter, existing unique method increases solid microbeads.The subject matter of these two kinds of methods is that cost is very high, is difficult to apply.
Summary of the invention
Goal of the invention: provide a kind of nothing left to starch the production method of non-evaporating pressure prestressed concrete pipe pile, to overcome the above-mentioned defect that prior art exists.
Technical scheme: the production method of non-evaporating pressure prestressed concrete pipe pile is starched in a kind of nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 380 ~ 420, flyash 80-120, sand 650-790, water 130-160, stone 1050-1200, new polycarboxylic acid water reducer 8-15, exciting agent 5-20,
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 70-75r/min, and the time is 3-5min, the centrifugal rotating speed of low-medium speed is 120-140r/min, and the time is 1.5-2.5min, and the speed setting of medium-speed centrifuge is 230-250r/min, high speed centrifugation step, speed setting is 450-550r/min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1-1.5h; Constant temperature stage 2.5-4h, temperature-fall period 1-1.5h; Described temperature rise period temperature is raised to 85-90 DEG C from room temperature; The temperature in described constant temperature stage remains on 84-86 DEG C;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 6-8, triethanolamine 0.2-0.5, dispersing agent NNO 0.6-1.2, expanded perlite 4-7, glauber salt 80-90, aluminum sulfate 5-6.5.。
In a further embodiment, described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Beneficial effect: the present invention can greatly reduce remaining slurry amount, energy-conserving and environment-protective, only need normal pressure to steam oxygen process, further energy-saving and emission-reduction, last the present invention, without the need to solid microbeads raw material, greatly reduces the cost of non-evaporating pressure pipe stake, easy to utilize simultaneously.
Detailed description of the invention
Embodiment 1
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 390, flyash 100, sand 790, water 133, stone 1142, new polycarboxylic acid water reducer 8, exciting agent 5;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 75r/min, and the time is 5min, and the centrifugal rotating speed of low-medium speed is 139r/min, and the time is 1.5min, and the speed setting of medium-speed centrifuge is 245r/min, high speed centrifugation step, and speed setting is 545r/min, and the time is 2min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1.2h; Constant temperature stage 3h, temperature-fall period 1.5h, described temperature rise period temperature is raised to 89 DEG C from room temperature, and the temperature in described constant temperature stage remains on 84 DEG C, and described temperature-fall period is down to room temperature; (due to temperature control system, the maximum temperature of temperature rise period is generally greater than the temperature in constant temperature stage)
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 7.7, triethanolamine 0.4, dispersing agent NNO 0.73, expanded perlite 5.4, glauber salt 83, aluminum sulfate 6.2.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 2
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 404, flyash 112, sand 739, water 140, stone 1128, new polycarboxylic acid water reducer 13, exciting agent 15;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 70r/min, and the time is 5min, and the centrifugal rotating speed of low-medium speed is 125r/min, and the time is 1.8min, and the speed setting of medium-speed centrifuge is 250r/min, high speed centrifugation step, and speed setting is 459r/min, and the time is 1.9min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1.3h; Constant temperature stage 3.6h, temperature-fall period 1.3h, described temperature rise period temperature is raised to 88 DEG C from room temperature, and the temperature in described constant temperature stage remains on 84.6 DEG C, and described temperature-fall period is down to room temperature;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 7.2, triethanolamine 0.5, dispersing agent NNO 0.97, expanded perlite 4.4, glauber salt 90, aluminum sulfate 6.2.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 3
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 417, flyash 115, sand 670, water 140, stone 1150, new polycarboxylic acid water reducer 14, exciting agent 19;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 73r/min, and the time is 4min, and the centrifugal rotating speed of low-medium speed is 136r/min, and the time is 2.4min, and the speed setting of medium-speed centrifuge is 230r/min, high speed centrifugation step, and speed setting is 533r/min, and the time is 1.2min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1.2h; Constant temperature stage 2.5h, temperature-fall period 1h, described temperature rise period temperature is raised to 89 DEG C from room temperature, and the temperature in described constant temperature stage remains on 84.5 DEG C, and described temperature-fall period is down to room temperature;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 7.2, triethanolamine 0.4, dispersing agent NNO 0.86, expanded perlite 6.7, glauber salt 85, aluminum sulfate 6.5.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 4
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 397, flyash 100, sand 722, water 133, stone 1122, new polycarboxylic acid water reducer 9, exciting agent 18;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 73r/min, and the time is 5min, and the centrifugal rotating speed of low-medium speed is 127r/min, and the time is 1.6min, and the speed setting of medium-speed centrifuge is 248r/min, high speed centrifugation step, and speed setting is 493r/min, and the time is 1.4min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1h; Constant temperature stage 4h, temperature-fall period 1.1h, described temperature rise period temperature is raised to 87 DEG C from room temperature, and the temperature in described constant temperature stage remains on 86 DEG C, and described temperature-fall period is down to room temperature;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 6.4, triethanolamine 0.2, dispersing agent NNO 0.94, expanded perlite 4.1, glauber salt 87, aluminum sulfate 5.7.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 5
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 411, flyash 89, sand 788, water 132, stone 1088, new polycarboxylic acid water reducer 10, exciting agent 17;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
Normal temperature is steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1h; Constant temperature stage 2.9h, temperature-fall period 1.3h, described temperature rise period temperature is raised to 90 DEG C from room temperature, and the temperature in described constant temperature stage remains on 85.2 DEG C, and described temperature-fall period is down to room temperature;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1-1.5h; Constant temperature stage 2.5-4h, temperature-fall period 1-1.5h; Described temperature rise period temperature is raised to 85-90 DEG C from room temperature; The temperature in described constant temperature stage remains on 84-86 DEG C;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 7.6, triethanolamine 0.2, dispersing agent NNO 1.2, expanded perlite 6.7, glauber salt 81, aluminum sulfate 5.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 6
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 390, flyash 99, sand 676, water 137, stone 1198, new polycarboxylic acid water reducer 14, exciting agent 19;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 71r/min, and the time is 5min, and the centrifugal rotating speed of low-medium speed is 133r/min, and the time is 1.9min, and the speed setting of medium-speed centrifuge is 244r/min, high speed centrifugation step, and speed setting is 532r/min, and the time is 1.3min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1h; Constant temperature stage 4h, temperature-fall period 1.2h, described temperature rise period temperature is raised to 88 DEG C from room temperature, and the temperature in described constant temperature stage remains on 84.5 DEG C, and described temperature-fall period is down to room temperature;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 6.9, triethanolamine 0.4, dispersing agent NNO 1, expanded perlite 6.1, glauber salt 90, aluminum sulfate 6.4.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 7
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 391, flyash 102, sand 736, water 141, stone 1173, new polycarboxylic acid water reducer 15, exciting agent 7;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 72r/min, and the time is 4min, and the centrifugal rotating speed of low-medium speed is 127r/min, and the time is 2min, and the speed setting of medium-speed centrifuge is 237r/min, high speed centrifugation step, and speed setting is 506r/min, and the time is 2.4min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1.4h; Constant temperature stage 3.4h, temperature-fall period 1.3h, described temperature rise period temperature is raised to 90 DEG C from room temperature, and the temperature in described constant temperature stage remains on 85.7 DEG C, and described temperature-fall period is down to room temperature;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 6.6, triethanolamine 0.5, dispersing agent NNO 1.14, expanded perlite 6.1, glauber salt 82, aluminum sulfate 6.5.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
Embodiment 8
A production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 410, flyash 85, sand 695, water 151, stone 1182, new polycarboxylic acid water reducer 12, exciting agent 11;
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
Normal temperature is steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1.5h; Constant temperature stage 3.6h, temperature-fall period 1.5h, described temperature rise period temperature is raised to 85 DEG C from room temperature, and the temperature in described constant temperature stage remains on 84.9 DEG C, and described temperature-fall period is down to room temperature;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1-1.5h; Constant temperature stage 2.5-4h, temperature-fall period 1-1.5h; Described temperature rise period temperature is raised to 85-90 DEG C from room temperature; The temperature in described constant temperature stage remains on 84-86 DEG C;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 8, triethanolamine 0.4, dispersing agent NNO 0.81, expanded perlite 5.8, glauber salt 83, aluminum sulfate 5.9.
Described cement is 52.5 class g cements.Described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.Described stone be 5-25mm impact crushing hammer, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.Described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.Described diethylene glycol (DEG) is technical grade, more than content 85wt%, and described triethanolamine is technical grade, and content is more than 85wt%, and described dispersing agent NNO is technical grade, content 100%.
The preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, and dispersing agent NNO adds in expanded perlite, stirs, then joins in glauber salt by the mixture of acquisition, stirs, finally adds aluminum sulfate, stir.
By above-mentioned sample censorship, product quality meets the relevant regulations of GB 13476-2009, and the intensity of 7d, 28d all exceeds existing standard.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple equivalents to technical scheme of the present invention, these equivalents all belong to protection scope of the present invention.It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a production method for non-evaporating pressure prestressed concrete pipe pile is starched in nothing left, it is characterized in that, comprises the steps:
Step 1, raw material are prepared, and with weight parts, described raw material is composed of the following components: cement 380 ~ 420, flyash 80-120, sand 650-790, water 130-160, stone 1050-1200, new polycarboxylic acid water reducer 8-15, exciting agent 5-20,
Step 2, cloth, matched moulds and stretch-draw process;
Step 3, carry out low speed, low-medium speed, middling speed and high speed centrifugation step successively;
At lowspeed centrifugation step, rotating speed is 70-75r/min, and the time is 3-5min, the centrifugal rotating speed of low-medium speed is 120-140r/min, and the time is 1.5-2.5min, and the speed setting of medium-speed centrifuge is 230-250r/min, high speed centrifugation step, speed setting is 450-550r/min;
Step 4, normal temperature are steam-cured, and described normal temperature is steam-cured comprises intensification, constant temperature and cooling three phases, and the time is respectively temperature rise period 1-1.5h; Constant temperature stage 2.5-4h, temperature-fall period 1-1.5h; Described temperature rise period temperature is raised to 85-90 DEG C from room temperature; The temperature in described constant temperature stage remains on 84-86 DEG C;
The structural formula of described new polycarboxylic acid water reducer is as follows:
Wherein, R
1, R
2, R
3, R
4and R
5all be selected from H or CH
3, n is 25 ~ 40, m is 35 ~ 55, a, b, c and d are positive integer, and M is monovalent cation;
Described exciting agent is made up of the raw material of following parts by weight: diethylene glycol (DEG) 6-8, triethanolamine 0.2-0.5, dispersing agent NNO 0.6-1.2, expanded perlite 4-7, glauber salt 80-90, aluminum sulfate 5-6.5.
2. the production method of non-evaporating pressure prestressed concrete pipe pile is starched in nothing left as claimed in claim 1, and it is characterized in that, described cement is 52.5 class g cements.
3. the production method of non-evaporating pressure prestressed concrete pipe pile is starched in nothing left as claimed in claim 1, and it is characterized in that, described flyash is II level flyash, and loss on ignition is the screen over-size after 4.22%, 45 microns of square hole screens is 16.3%.
4. the production method of non-evaporating pressure prestressed concrete pipe pile is starched in nothing left as claimed in claim 1, it is characterized in that, described stone be that the impact crushing of 5-25mm is hammered into shape, crush values index is 9.2%, and clay content is 0.4%, and apparent density is 2.72g/cm
3.
5. the production method of non-evaporating pressure prestressed concrete pipe pile is starched in nothing left as claimed in claim 1, and it is characterized in that, described sand is medium sand, and modulus of fineness is 2.9, clay content 0.8%, and clod content is 0.1%.
6. the production method of non-evaporating pressure prestressed concrete pipe pile is starched in nothing left as claimed in claim 1, and it is characterized in that, described diethylene glycol (DEG) is technical grade, more than content 85wt%, described triethanolamine is technical grade, and content is more than 85wt%, described dispersing agent NNO is technical grade, and content is 100%.
7. the production method of non-evaporating pressure prestressed concrete pipe pile is starched in the nothing left as described in claim 1 or 6, it is characterized in that, the preparation process of described exciting agent is as follows: by diethylene glycol (DEG), triethanolamine, dispersing agent NNO adds in expanded perlite, stir, then the mixture of acquisition is joined in glauber salt, stir, finally add aluminum sulfate, stir.
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| CN112500109A (en) * | 2020-12-12 | 2021-03-16 | 德清高盛交通科技有限公司 | Concrete for non-autoclaved PHC (prestressed high-strength concrete) tubular pile and production process of non-autoclaved PHC tubular pile |
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