CN115366266B - Method and equipment for weighing aggregate water for stabilizing water consumption of concrete - Google Patents
Method and equipment for weighing aggregate water for stabilizing water consumption of concrete Download PDFInfo
- Publication number
- CN115366266B CN115366266B CN202211199526.8A CN202211199526A CN115366266B CN 115366266 B CN115366266 B CN 115366266B CN 202211199526 A CN202211199526 A CN 202211199526A CN 115366266 B CN115366266 B CN 115366266B
- Authority
- CN
- China
- Prior art keywords
- water
- weighing
- aggregate
- concrete
- consumption
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
- B28C7/044—Weighing mechanisms specially adapted therefor; Weighing containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
- B28C7/126—Supply means, e.g. nozzles
-
- 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)
- Dispersion Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention provides an aggregate water weighing method and equipment for stabilizing water consumption of concrete, and relates to the field of concrete stirring, wherein the method comprises the following steps: detecting the coarse and fine aggregate in the field, calculating the construction mix proportion, the theoretical material weight and the weighing value in the aggregate water, supplying water, feeding, weighing in the water, draining water, discharging to a conveyor belt, calculating the total water content of the aggregate by secondary weighing, calculating the construction water consumption, feeding, and stirring to produce concrete. The invention avoids inaccurate aggregate weighing caused by fluctuation of the water content of the aggregate and unstable mud content, realizes small construction water consumption error deviation in the concrete mixing plant, and simultaneously, the weighing water can take away a certain amount of harmful substances, thereby creating favorable conditions for producing stable and high-quality concrete in the concrete mixing plant.
Description
Technical Field
The invention relates to the field of concrete stirring, in particular to a method and equipment for weighing aggregate water for stabilizing water consumption of concrete.
Background
At present, the existing concrete mixing plant has the common conditions of tense aggregate supply and unstable quality, and partial sand and stone material yard washing equipment is imperfect due to local environmental requirements, so that some manufacturers save cost, omit aggregate washing links and reduce sewage discharge. However, due to the sequential production order of aggregates and the influence of weather, when the water content difference of aggregates in the same batch of in-situ aggregates is large, the difference between the weighed construction amount and the theoretical construction amount is large easily when the sampling detection frequency is insufficient, the water consumption of the construction ratio is inaccurate, the workability mutation of concrete is caused, and the strength of the concrete is unstable.
The aggregate content is high, the fluctuation of the water content of coarse and fine aggregates is large, and the aggregate optimization process of the concrete mixing plant is particularly important under the condition that secondary treatment is not performed.
Disclosure of Invention
The invention aims to solve the problems of inaccurate water consumption of construction proportion and unstable concrete strength caused by unstable mud content and water content of aggregate and insufficient sampling detection frequency.
In order to achieve the above object, in one aspect, the present invention provides a method for weighing aggregate water for stabilizing the water consumption of concrete, comprising the steps of:
s001: detecting approach coarse and fine aggregates;
s002: calculating a construction mixing ratio, theoretical material weight and aggregate water weighing value;
s003: water supply and feeding;
s004: weighing in water;
s005: draining water;
s006: discharging to a conveyor belt;
s007: weighing for the second time to calculate the total water content of the aggregate;
s008: calculating construction water consumption;
s009: and (5) feeding and stirring to produce concrete.
Step S001 includes: according to GB/T14684-2011 "sand for construction", GB/T14685-2011 "pebble for construction, macadam for construction" and JTG E42-2005 "highwayThe standard of engineering aggregate test procedure requires detection of various physical performance indexes of the incoming coarse and fine aggregate, such as mud content n, apparent density p and bulk density p 1 Etc.;
step S002 includes: aggregate particle volume V 0 The calculation method comprises the following steps: v (V) 0 ＝m 0 P, where m 0 The aggregate consumption is used; the particle volume is equal to the volume of discharged water when the materials are weighed, and the weight m of the discharged water w The calculation method comprises the following steps: m is m w ＝V 0 *p w Wherein p is w Is the density of water; aggregate in-water weighing value m by adopting in-water weighing method 1 The calculation method comprises the following steps: m is m 1 ＝m 0 -(m 0 *p w /p); aggregate stacking volume V 1 The calculation method comprises the following steps: v (V) 1 ＝m 0 /p 1 The method comprises the steps of carrying out a first treatment on the surface of the Aggregate stacking volume V 1 Must not exceed the rated volume of the weighing equipment and the aggregate consumption m 0 The measuring range of the weighing equipment must not be exceeded; the rated volume of the weighing equipment is the volume below the overflow port water level line of the weighing hopper.
Step S003 includes: before weighing, a water supply switch is turned on, the weighing equipment is filled with water until water in the weighing equipment flows out from an overflow port, the weight is stable, the weight is peeled, and the indication value of the weighing equipment in water is reset to zero; the zeroed underwater weighing device enters a weighing state, so that the weighing time is shortened in order to reduce the overflow water amount during feeding, a large amount of water is prevented from rushing out in the feeding process, and the aggregate particle volume V is calculated in advance 0 Firstly, a part of water is discharged, a switch communicated with the intermediate water supply bin is opened, a weighing device after discharging a part of water shows a negative value, and the absolute value of the negative value shown by the weighing device is smaller than the weight m of aggregate discharged boiled water w When the water is insufficient, water is added for supplementing, so that the water level in the weighing equipment is kept at the lower edge of the overflow port before the weighing is finished, and aggregate piled in the storage bin is transferred to a feeding hopper above the underwater weighing equipment by a loader, so that the first ingredient is prepared for weighing.
Step S004 includes: the mixing station control room starts to operate the weighing system, and the weighing value m is calculated according to the calculated aggregate water 1 Weighing ingredients, simultaneously opening a feeding hopper and a weighing water feeding mouth, and feeding materials into weighing equipment along with the feeding hopperThe total volume of the water quantity in the weighing device and the volume of the thrown aggregate exceeds the water level volume of the overflow port, and the redundant water is discharged from the overflow hole and flows into the middle water supply bin through the overflow water tank; the indication value of the weighing equipment is gradually increased from a negative value, the water outlet of the overflow port is quickly slowed down, and when the indication value of the weighing equipment is stabilized at m 1 And when the weight is within +/-2%, the weighing is finished, the water supply switch is closed, the water supply scale of the stirrer and the secondary weighing storage hopper are peeled and zeroed.
Step S005 includes: discharging free water in the weighing equipment after weighing is finished, discharging and secondary weighing at the back are facilitated, and opening a communication switch, wherein the free water in the weighing equipment enters a communication pipeline through a first screen and a 0.075mm screen below the scale, so that most of water in the weighing equipment flows into a middle water supply bin within 3-5 seconds; closing the communication switch, opening the drainage pump, and rapidly absorbing the residual free water in the aggregate to the middle water supply bin; the draining process will drain a portion of the particles less than 0.075 mm; in the drainage process, circulating water in the middle water supply bin is started, water flows into the middle water supply bin through the circulating water pipe, the water level of the middle water supply bin is improved, mud-containing sewage is discharged, and the drainage pump is closed after the drainage is finished. When the aggregate is 0-4.75mm fine aggregate, the first screen is a 2.36mm screen; when coarse aggregate with the aggregate of more than 4.75mm is weighed, the first screen is a 4.75mm screen.
Step S006 includes: the weighing equipment discharging door is opened, aggregates sequentially fall to a conveying belt in operation, the weighing equipment discharging door comprises a horizontal conveying belt and an inclined conveying belt, the horizontal conveying belt and the inclined conveying belt are conveyed to a secondary weighing storage hopper on a concrete mixer, the discharging sequence is that coarse aggregates are firstly obtained and then fine aggregates are obtained, and a vibrator arranged on the outer side of the weighing equipment is started in the discharging process, so that arch breaking and discharging are facilitated.
Step S007 includes: secondary weighing is carried out in a secondary weighing storage hopper to obtain the total mass m of the coarse and fine aggregate containing water 2 Calculating the total water content w of the aggregate 1 The calculation method comprises the following steps: w (w) 1 ＝m 2 -m 0， 。
Step S008 includes: the construction water consumption w added by the water feeding scale of the stirrer is calculated by the following steps: w=w 0 -w 1 Wherein w is 0 Is the total water consumption;
step S009 includes: and opening the secondary weighing storage hopper and the mixer water-feeding scale, and enabling aggregate and construction water to fall into the concrete mixer to mix and produce concrete.
On the other hand, the invention provides aggregate water weighing equipment for stabilizing concrete water consumption, which is characterized by comprising a feeding hopper, wherein a weighing water feeding port and an overflow trough are arranged at the upper part of the feeding hopper, a vibrator is arranged on the side surface of the feeding hopper, a first screen and a 0.075mm screen are arranged at the bottom of the feeding hopper, the feeding hopper is communicated with an intermediate water supply bin through two communicating pipes, one communicating pipe is provided with a communicating switch, the other communicating pipe is provided with a drainage pump, the intermediate water supply bin is provided with a circulating water pipe, a horizontal conveying belt is arranged at the lower part of the feeding hopper, an inclined conveying belt is arranged at the lower part of one side of the horizontal conveying belt, a secondary weighing storage hopper is arranged at the tail end of the inclined conveying belt, a mixer water-feeding scale is arranged at one side of the secondary weighing storage hopper, and a concrete mixer is arranged at the lower part of the mixer water-feeding scale.
Compared with the prior art, the invention has the beneficial effects that:
the invention can avoid inaccurate aggregate weighing caused by fluctuation of aggregate water content and unstable mud content, and the invention can realize small construction water consumption error deviation in the concrete mixing plant, and meanwhile, the weighing water can take away a certain amount of harmful substances, thereby creating favorable conditions for producing stable and high-quality concrete in the concrete mixing plant.
Drawings
FIG. 1 is a flow chart of the present invention;
fig. 2 is a schematic view of the working equipment of the present invention.
Reference numerals illustrate:
1-feeding hopper, 2-weighing water feeding mouth, 3-overflow water tank, 4-vibrator, 5-first screen, 6-0.075mm screen, 7-communication switch, 8-drainage pump, 9-circulating water pipe, 10-middle water supply bin, 11-horizontal conveyer belt, 12-inclined conveyer belt, 13-secondary weighing storage hopper, 14-stirrer water-feeding scale and 15-concrete stirrer.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1-2, the method for weighing the aggregate water for stabilizing the water consumption of concrete comprises the following steps:
s001: detecting approach coarse and fine aggregates;
s002: calculating a construction mixing ratio, theoretical material weight and aggregate water weighing value;
s003: water supply and feeding;
s004: weighing in water;
s005: draining water;
s006: discharging to a conveyor belt;
s007: weighing for the second time to calculate the total water content of the aggregate;
s008: calculating construction water consumption;
s009: and (5) feeding and stirring to produce concrete.
Step S001 includes: according to the standard requirements of GB/T14684-2011 'sand for construction', GB/T14685-2011 'pebble for construction, broken stone' and JTG E42-2005 'highway engineering aggregate test procedure', various physical performance indexes of the approach coarse and fine aggregate, such as mud content n, apparent density p and bulk density p, are detected 1 Etc.;
the step S002 includes: aggregate particle volume V 0 The calculation method comprises the following steps: v (V) 0 ＝m 0 P, where m 0 The aggregate consumption is used; the particle volume is equal to the volume of discharged water when the materials are weighed, and the weight m of the discharged water w The calculation method comprises the following steps: m is m w ＝V 0 *p w Wherein p is w Is the density of water; aggregate in-water weighing value m by adopting in-water weighing method 1 The calculation method comprises the following steps: m is m 1 ＝m 0 -(m 0 *p w /p); aggregate stacking volume V 1 The calculation method comprises the following steps: v (V) 1 ＝m 0 /p 1 The method comprises the steps of carrying out a first treatment on the surface of the Aggregate stacking volume V 1 Must not exceed the rated volume of the weighing equipment and the aggregate consumption m 0 The measuring range of the weighing equipment must not be exceeded; the rated volume of the weighing equipment is the volume below the overflow port water level line of the weighing hopper.
Step S003 includes: before weighing, a water supply switch is turned on, the weighing equipment is filled with water until water in the weighing equipment flows out from an overflow port, the weight is stable, the weight is peeled, and the indication value of the weighing equipment in water is reset to zero; the zeroed underwater weighing device enters a weighing state, so that the weighing time is shortened in order to reduce the overflow water amount during feeding, a large amount of water is prevented from rushing out in the feeding process, and the aggregate particle volume V is calculated in advance 0 Firstly, a part of water is discharged, a switch communicated with the intermediate water supply bin is opened, a weighing device after discharging a part of water shows a negative value, and the absolute value of the negative value shown by the weighing device is smaller than the weight m of aggregate discharged boiled water w When the water is insufficient, water is added for supplementing, so that the water level in the weighing equipment is kept at the lower edge of the overflow port before the weighing is finished, and aggregate piled in the storage bin is transferred to a feeding hopper above the underwater weighing equipment by a loader, so that the first ingredient is prepared for weighing.
Step S004 includes: the mixing station control room starts to operate the weighing system, and the weighing value m is calculated according to the calculated aggregate water 1 Weighing ingredients, simultaneously opening a feeding hopper and a weighing water supply port, gradually increasing the feeding amount of the materials into the weighing equipment along with the feeding of the feeding hopper, and discharging excessive water from an overflow hole and flowing into an intermediate water supply bin through an overflow water tank when the sum of the water amount in the weighing equipment and the fed aggregate volume exceeds the water level volume of the overflow port; the indication value of the weighing equipment is gradually increased from a negative value, the water outlet of the overflow port is quickly slowed down, and when the indication value of the weighing equipment is stabilized at m 1 And when the weight is within +/-2%, the weighing is finished, the water supply switch is closed, the water supply scale of the stirrer and the secondary weighing storage hopper are peeled and zeroed.
Step S005 includes: discharging free water in the weighing equipment after weighing is finished, discharging and secondary weighing at the back are facilitated, and opening a communication switch, wherein the free water in the weighing equipment enters a communication pipeline through a first screen and a 0.075mm screen below the scale, so that most of water in the weighing equipment flows into a middle water supply bin within 3-5 seconds; closing the communication switch, opening the drainage pump, and rapidly absorbing the residual free water in the aggregate to the middle water supply bin; the draining process will drain a portion of the particles less than 0.075 mm; in the drainage process, circulating water in the middle water supply bin is started, water flows into the middle water supply bin through the circulating water pipe, the water level of the middle water supply bin is improved, mud-containing sewage is discharged, and the drainage pump is closed after the drainage is finished. When the aggregate is weighed to be 0-4.75mm of fine aggregate, the first screen is a 2.36mm screen; when coarse aggregate with the aggregate of more than 4.75mm is weighed, the first screen is a 4.75mm screen.
Step S006 includes: the weighing equipment discharging door is opened, aggregates sequentially fall to a conveying belt in operation, the weighing equipment discharging door comprises a horizontal conveying belt and an inclined conveying belt, the horizontal conveying belt and the inclined conveying belt are conveyed to a secondary weighing storage hopper on a concrete mixer, the discharging sequence is that coarse aggregates are firstly obtained and then fine aggregates are obtained, and a vibrator arranged on the outer side of the weighing equipment is started in the discharging process, so that arch breaking and discharging are facilitated.
Step S007 includes: secondary weighing is carried out in a secondary weighing storage hopper to obtain the total mass m of the coarse and fine aggregate containing water 2 Calculating the total water content w of the aggregate 1 The calculation method comprises the following steps: w (w) 1 ＝m 2 -m 0， 。
Step S008 includes: the construction water consumption w added by the water feeding scale of the stirrer is calculated by the following steps: w=w 0 -w 1 Wherein w is 0 Is the total water consumption;
step S009 includes: and opening the secondary weighing storage hopper and the mixer water-feeding scale, and enabling aggregate and construction water to fall into the concrete mixer to mix and produce concrete.
And after the step S009 is finished, the communicating pipeline of the weighing equipment in the water is opened, the communicating switch is closed after the water level is balanced, the water feeding mouth is opened, and the next disc concrete production weighing process is continued.
As shown in fig. 2, the aggregate water weighing device for stabilizing the water consumption of concrete comprises an upper hopper 1, wherein a weighing water feeding port 2 and an overflow water tank 3 are arranged at the upper part of the upper hopper 1, a vibrator 4 is arranged on the side surface of the upper hopper, a first screen 5 and a 0.075mm screen 6 are arranged at the bottom of the upper hopper, the upper hopper 1 is communicated with a middle water supply bin 10 through two communication pipelines, one communication pipeline is provided with a communication switch 7, the other communication pipeline is provided with a drainage pump 8, the middle water supply bin 10 is provided with a circulating water pipe 9, a horizontal conveying belt 11 is arranged at the lower part of the upper hopper 1, an inclined conveying belt 12 is arranged at the lower part of one side of the horizontal conveying belt 11, the inclined conveying belt 12 is conveyed from low to high, a secondary weighing storage hopper 13 is arranged at the tail end of the inclined conveying belt 12, a mixer water feeding scale 14 is arranged at one side of the secondary weighing storage hopper 13, a concrete mixer 15 is arranged at the lower part of the secondary weighing storage hopper 13, and the aggregate water feeding scale 15 is arranged at the lower part of the mixer.
Example calculation:
the theoretical mixing proportion of concrete in a concrete mixing station is as follows: the dosage of coarse aggregate is 1100kg, the dosage of fine aggregate is 700kg, the water consumption is 150kg, and the apparent density of the coarse aggregate is 2.650g/cm measured by a test 3 The apparent density of the fine aggregate is 2.61g/cm 3 The density of the water used in the mixing station is 1g/cm 3 (4 ℃) the daily air temperature is 28 ℃, the water content of the coarse aggregate is 1.0% by sampling, and the mud content is 0%. The water content of the fine aggregate is 6.0 percent, and the mud content is 3 percent. Due to the temperature influence and the natural flow of water, the water content of the aggregate changes to: the water content of the coarse aggregate is 0.1%, the water content of the fine aggregate is 2.0%, and the influence of the weighing method on the mixing ratio at the moment is calculated.
For ease of calculation, assume a concrete mass per disc of 1m 3 The specific gravity of water is tentatively 1, ignoring the temperature effect; assume that the volume of the underwater weighing device is 2m 3 Meets the use requirement; the secondary weighing measured value of the storage hopper is 1830kg; the mud content was weighed to wash out 1.5%.
Example one: the water content measurement is combined with traditional weighing:
the construction amount of coarse aggregate: 1100 (1+0.01) =1111 kg;
the construction amount of the fine aggregate is as follows: 700 (1+0.06) =742 kg;
sand ratio a1=700/(700+1100) ×100% =38.9%;
aggregate moisture content: 1111+742-1100-700=53 kg;
construction water consumption: 150-53 = 97kg;
after the water content is changed:
actual amount of coarse aggregate: 1111 (1-0.001) =1110 kg;
actual amount of fine aggregate: 742 x (1-0.02) =727 kg;
sand ratio a2=727/(727+1110) ×100% =39.6%, sand ratio difference: 39.6% -38.9% = 0.7%, sand rate increased by 0.7%;
actual water content in aggregate: 1111+742-1110-727=16 kg;
construction water consumption: 97+16=113 kg, 113-150= -37kg different from the theoretical proportioning, and the water consumption is reduced by 37kg.
In contrast, if the aggregate moisture content is measured to increase, the construction water consumption increases, greatly affecting workability and strength of fresh concrete.
Example two: the method for detecting the apparent density of coarse and fine aggregates and weighing the coarse and fine aggregates in water comprises the following steps:
peeling after the water balance is filled with water, adding aggregate, weighing and counting after the numerical value is stable, and obtaining the weighing value in the aggregate water.
Weighing the coarse aggregate in water: 1100- (1100/2.65) =1100-415.1= 684.9kg;
weighing the fine aggregate in water: 700- (700/2.61) =700-268.2 = 431.8kg;
the actual weight of the fine aggregate after the mud content is reduced by 1.5 percent: 700 x (1-0.015) =689.5 kg;
sand ratio a3=689.5/(689.5+1100) ×100% =689.5/1789.5×100% =38.5%;
construction water consumption: 150- (1830-1100-689.5) =109.5 kg;
if the aggregate quality change caused by the loss of the mud content in the aggregate is ignored, the construction water consumption is as follows: 150- (1830-1100-700) =120 kg, the construction water consumption difference is: 120-109.5=10.5 kg, the actual construction water consumption is: 150-10.5=139.5 kg.
Therefore, when the mud content of the aggregate is large, the actual mud content change can be sampled and measured, the water consumption difference is compensated, and the water consumption deviation is reduced.
The following table sums the data for evaluation as a result of the calculation:
the above description is only a preferred embodiment of the present patent, but the protection scope of the present patent is not limited thereto, and any person skilled in the art who is skilled in the art should make equivalent substitutions or changes according to the technical solution of the present patent within the scope of the present patent.
Claims (9)
1. The method for weighing the aggregate water for stabilizing the water consumption of the concrete is characterized by comprising the following steps of:
s001: detecting approach coarse and fine aggregates;
s002: calculating a construction mix ratio, a theoretical material weight and an aggregate water weighing value, wherein the step S002 comprises the following steps: aggregate particle volume V 0 The calculation method comprises the following steps: v (V) 0 =m 0 P, where m 0 The aggregate consumption is used; the particle volume is equal to the volume of discharged water when the materials are weighed, and the weight m of the discharged water w The calculation method comprises the following steps: m is m w =V 0 *p w Wherein p is w Is the density of water; aggregate in-water weighing value m by adopting in-water weighing method 1 The calculation method comprises the following steps: m is m 1 =m 0 -（m 0 *p w /p); aggregate stacking volume V 1 The calculation method comprises the following steps: v (V) 1 =m 0 /p 1 The method comprises the steps of carrying out a first treatment on the surface of the Aggregate stacking volume V 1 Must not exceed the rated volume of the weighing equipment and the aggregate consumption m 0 The measuring range of the weighing equipment must not be exceeded; the rated volume of the weighing equipment is the volume below the overflow port water level line of the weighing hopper;
s003: water supply and feeding;
s004: weighing in water;
s005: draining water;
s006: discharging to a conveyor belt;
s007: secondary weighing meterCalculating the aggregate total moisture content, said step S007 comprising: secondary weighing is carried out in a secondary weighing storage hopper to obtain the total mass m of the coarse and fine aggregate containing water 2 Calculating the total water content w of the aggregate 1 The calculation method comprises the following steps: w (w) 1 =m 2 -m 0 ；
S008: the construction water consumption is calculated, wherein the step S008 comprises the calculation method of the construction water consumption w added by a water scale on a stirrer, and the calculation method comprises the following steps: w=w 0 -w 1 Wherein w is 0 Is the total water consumption;
s009: and (5) feeding and stirring to produce concrete.
2. The method for weighing the aggregate water for stabilizing the water consumption of concrete according to claim 1, wherein said step S001 comprises: detecting physical performance indexes of the approach coarse and fine aggregate according to standard requirements of GB/T14684-2011 'sand for construction', GB/T14685-2011 'pebble and macadam for construction' and JTG E42-2005 'highway engineering aggregate test procedure', and the mud content n, apparent density p and bulk density p 1 。
3. The method for weighing the aggregate in water for stabilizing the water consumption of concrete according to claim 2, wherein said step S003 comprises: before weighing, a water supply switch is turned on, the weighing equipment is filled with water until water in the weighing equipment flows out from an overflow port, the weight is stable, the weight is peeled, and the indication value of the weighing equipment in water is reset to zero; the zeroed underwater weighing device enters a weighing state, so that the weighing time is shortened in order to reduce the overflow water amount during feeding, a large amount of water is prevented from rushing out in the feeding process, and the aggregate particle volume V is calculated in advance 0 Firstly, a part of water is discharged, a switch communicated with the intermediate water supply bin is opened, a weighing device after discharging a part of water shows a negative value, and the absolute value of the negative value shown by the weighing device is smaller than the weight m of aggregate discharged boiled water w When the water is insufficient, water is added for supplementing, so that the water level in the weighing equipment is kept at the lower edge of the overflow port before the weighing is finished, and aggregate piled in the storage bin is transferred to a feeding hopper above the underwater weighing equipment by a loader, so that the first ingredient is prepared for weighing.
4. The method for weighing the aggregate water for stabilizing the water consumption of concrete according to claim 2, wherein said step S004 comprises: the mixing station control room starts to operate the weighing system, and the weighing value m is calculated according to the calculated aggregate water 1 Weighing ingredients, simultaneously opening a feeding hopper and a weighing water supply port, gradually increasing the feeding amount of the materials into the weighing equipment along with the feeding of the feeding hopper, and discharging excessive water from an overflow hole and flowing into an intermediate water supply bin through an overflow water tank when the sum of the water amount in the weighing equipment and the fed aggregate volume exceeds the water level volume of the overflow port; the indication value of the weighing equipment is gradually increased from a negative value, the water outlet of the overflow port is quickly slowed down, and when the indication value of the weighing equipment is stabilized at m 1 And when the weight is within +/-2%, the weighing is finished, the water supply switch is closed, the water supply scale of the stirrer and the secondary weighing storage hopper are peeled and zeroed.
5. The method for weighing the aggregate water for stabilizing the water consumption of concrete according to claim 2, wherein said step S005 comprises: discharging free water in the weighing equipment after weighing is finished, discharging and secondary weighing at the back are facilitated, and opening a communication switch, wherein the free water in the weighing equipment enters a communication pipeline through a first screen and a 0.075mm screen below the scale, so that most of water in the weighing equipment flows into a middle water supply bin within 3-5 seconds; closing the communication switch, opening the drainage pump, and rapidly absorbing the residual free water in the aggregate to the middle water supply bin; the draining process will drain a portion of the particles less than 0.075 mm; in the drainage process, circulating water in the middle water supply bin is started, water flows into the middle water supply bin through the circulating water pipe, the water level of the middle water supply bin is improved, mud-containing sewage is discharged, and the drainage pump is closed after the drainage is finished.
6. The method for weighing the aggregate water for stabilizing the water consumption of concrete according to claim 2, wherein said step S006 comprises: the weighing equipment discharging door is opened, aggregates sequentially fall to a conveying belt in operation, the weighing equipment discharging door comprises a horizontal conveying belt and an inclined conveying belt, the horizontal conveying belt and the inclined conveying belt are conveyed to a secondary weighing storage hopper on a concrete mixer, the discharging sequence is that coarse aggregates are firstly obtained and then fine aggregates are obtained, and a vibrator arranged on the outer side of the weighing equipment is started in the discharging process, so that arch breaking and discharging are facilitated.
7. The method for weighing the aggregate in water for stabilizing the water consumption of concrete according to claim 2, wherein said step S009 comprises: and opening the secondary weighing storage hopper and the mixer water-feeding scale, and enabling aggregate and construction water to fall into the concrete mixer to mix and produce concrete.
8. The method for weighing aggregate in water for stabilizing concrete water consumption according to claim 5, wherein when the aggregate is 0-4.75mm fine aggregate, the first screen is a 2.36mm screen; when coarse aggregate with the aggregate of more than 4.75mm is weighed, the first screen is a 4.75mm screen.
9. The utility model provides a stabilize weighing equipment in aquatic that gathers materials of concrete water consumption, its characterized in that includes upper hopper (1), upper portion of upper hopper (1) is provided with weigh feed water mouth (2) and overflow water tank (3), and the side is provided with electromagnetic shaker (4), and the bottom is provided with first screen cloth (5) and 0.075mm screen cloth (6), upper hopper (1) are through two communication pipeline and middle water supply bin (10) intercommunication, and one of them communication pipeline is provided with communication switch (7), and another communication pipeline is provided with drain pump (8), middle water supply bin (10) are provided with circulating pipe (9), upper hopper (1) lower part is provided with horizontal conveyer belt (11), horizontal conveyer belt (11) one side lower part is provided with inclined conveyer belt (12), inclined conveyer belt (12) are by low to high conveying, inclined conveyer belt (12) end is provided with secondary weighing storage hopper (13), secondary weighing storage hopper (13) one side is provided with mixer upper water (14), secondary weighing storage hopper (13) and one side is provided with mixer water scale (14), the water consumption that can be used in the concrete scale (15) is weighed to the water scale (15) the concrete water consumption steady method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199526.8A CN115366266B (en) | 2022-09-29 | 2022-09-29 | Method and equipment for weighing aggregate water for stabilizing water consumption of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199526.8A CN115366266B (en) | 2022-09-29 | 2022-09-29 | Method and equipment for weighing aggregate water for stabilizing water consumption of concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115366266A CN115366266A (en) | 2022-11-22 |
| CN115366266B true CN115366266B (en) | 2023-07-25 |
Family
ID=84073596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211199526.8A Active CN115366266B (en) | 2022-09-29 | 2022-09-29 | Method and equipment for weighing aggregate water for stabilizing water consumption of concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115366266B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118114A (en) * | 1989-10-02 | 1991-05-20 | Nobuhiro Sato | Manufacture of ready mixed concrete using sensor and computer |
| CN1343555A (en) * | 2000-09-21 | 2002-04-10 | 王丽云 | Method for washing mixture of cement concrete with water and its product |
| CN101435815A (en) * | 2008-11-17 | 2009-05-20 | 武继虎 | New mixing concrete mixing proportion determinator |
| CN108529966A (en) * | 2018-04-20 | 2018-09-14 | 中建五局土木工程有限公司 | Seepage control and crack resistance pump concrete component design method and pouring molding method |
| CN114249556A (en) * | 2021-11-30 | 2022-03-29 | 天津市交通科学研究院 | Design method for steel slag asphalt concrete mixing proportion |
| CN114283904A (en) * | 2021-12-06 | 2022-04-05 | 中建桥梁有限公司 | Method for designing cement concrete proportioning by using volume-mass theory method |
| CN216367589U (en) * | 2021-12-01 | 2022-04-26 | 北京金隅混凝土有限公司 | Concrete mixing plant slurry water compounding system |
-
2022
- 2022-09-29 CN CN202211199526.8A patent/CN115366266B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118114A (en) * | 1989-10-02 | 1991-05-20 | Nobuhiro Sato | Manufacture of ready mixed concrete using sensor and computer |
| CN1343555A (en) * | 2000-09-21 | 2002-04-10 | 王丽云 | Method for washing mixture of cement concrete with water and its product |
| CN101435815A (en) * | 2008-11-17 | 2009-05-20 | 武继虎 | New mixing concrete mixing proportion determinator |
| CN108529966A (en) * | 2018-04-20 | 2018-09-14 | 中建五局土木工程有限公司 | Seepage control and crack resistance pump concrete component design method and pouring molding method |
| CN114249556A (en) * | 2021-11-30 | 2022-03-29 | 天津市交通科学研究院 | Design method for steel slag asphalt concrete mixing proportion |
| CN216367589U (en) * | 2021-12-01 | 2022-04-26 | 北京金隅混凝土有限公司 | Concrete mixing plant slurry water compounding system |
| CN114283904A (en) * | 2021-12-06 | 2022-04-05 | 中建桥梁有限公司 | Method for designing cement concrete proportioning by using volume-mass theory method |
Non-Patent Citations (1)
| Title |
|---|
| 中国建筑科学研究院（主编）.《普通混凝土拌合物性能试验方法标准》.中华人民共和国建设部,2003,(第GB50080-2002版),943-945页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115366266A (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205009418U (en) | Modified polyphenyl granule insulation material mixture, stirring and quantitative feeding device | |
| US20150103614A1 (en) | Apparatus and method for a concrete plant | |
| CN201458348U (en) | Granule weighing metering conveying device | |
| CN207656946U (en) | A kind of dry powder and mortar feed proportioning system | |
| CN105599148A (en) | Improved concrete production system | |
| CN205438900U (en) | Modified concrete production system | |
| CN115366266B (en) | Method and equipment for weighing aggregate water for stabilizing water consumption of concrete | |
| CN203227462U (en) | Dosing mixing unit | |
| CN205130138U (en) | A high -efficient mixing system for wallboard machine | |
| CN104857888A (en) | Automatic batching system | |
| CN210552167U (en) | Accurate dosing unit is used in concrete preparation | |
| CN204816428U (en) | Curing agent batching production system | |
| CN206589157U (en) | A kind of concrete batching and mixing tower structure | |
| CN112976315A (en) | Dry-mixed mortar production system | |
| CN102399066B (en) | Method and equipment for comprehensive utilization after three-stage staged treatment of mine stone powder | |
| CN209702504U (en) | A kind of curing system of hydraulic reclamation mud quilt | |
| CN216367589U (en) | Concrete mixing plant slurry water compounding system | |
| CN114213074B (en) | Method for calculating mixing proportion of common concrete | |
| CN110271102A (en) | A kind of concrete mixing plant batching control system and control method | |
| CN112129607B (en) | Device and process for manufacturing contrast cement base sample for detecting slag powder activity index | |
| CN210030472U (en) | Cement preparation system | |
| CN204933388U (en) | A kind of automatic batching system | |
| CN203805141U (en) | Automatic batching system for foam concrete | |
| CN113202551A (en) | System and method for accurately preparing and filling coarse aggregate and tail mortar | |
| CN221492384U (en) | Automatic blanking equipment |
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 |