CN108593891A - The quick method of indirect determination moisture content in a kind of construction of airfield runway high roadbed - Google Patents
The quick method of indirect determination moisture content in a kind of construction of airfield runway high roadbed Download PDFInfo
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- CN108593891A CN108593891A CN201810540193.8A CN201810540193A CN108593891A CN 108593891 A CN108593891 A CN 108593891A CN 201810540193 A CN201810540193 A CN 201810540193A CN 108593891 A CN108593891 A CN 108593891A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
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Abstract
A kind of method of quick indirect determination moisture content in constructing the invention discloses airfield runway high roadbed, including：S1, airfield runway high roadbed construction in, in filling body bury more waddys, waddy top is waiting for exposing certain length above filling body；S2, filling body progress filling body making is treated, Wood moisture detector is set on the top of waddy, passes through the aqueous rate score that Wood moisture detector measures timber；The soil moisture content of filling body is calculated；S3, the natural moisture content for measuring various fillers in high roadbed construction, calculate the water ultimately joined, embankment construction are made to reach optimum moisture content；S4, water is ultimately joined according to what is be calculated, the mode for adding water or being exposed to the sun is taken to filling body, adjusts soil moisture content, reaches optimum moisture content；S5, filling body is rolled, and measures the moisture content after rolling, ensure that it reaches optimum moisture content.The present invention is convenient and efficient, has saved the duration, ensure that the construction quality of airfield runway.
Description
Technical field
The present invention relates in civil airport engineering high roadbed construction field more particularly to a kind of construction of airfield runway high roadbed
The method of quick indirect determination moisture content.
Background technology
Traditional measurement of water-content coefficient method includes alcohol combustion method, oven drying method.
Alcohol combustion method --- burnt using alcohol in pedotheque the heat released, keeps soil water evaporation dry
It is dry, by the difference for front and back quality of burning, calculate the percentage of soil moisture content.
Oven drying method --- the most classical and accurate method, by soil, drying to constant weight at 105~110 DEG C, in soil
Various moisture can volatilize away, can directly measure moisture.
But above-mentioned construction method has the shortcomings that respective, alcohol combustion method can take away the dry of sample in the high-temp combustion stage
Substance so that metric results are inaccurate, and every part of sample need to do 3 groups of experiments, and experiment takes 30 minutes, and the time is longer.
Although oven drying method is accurate, the test period grows (for 24 hours), and feedback result is slow, seriously affects the construction period.
Above method in the prior art has some limitations or measuring accuracy is relatively low or back-to-back testing knot
The fruit time is longer, it is difficult to be suitable for, construction period tight application scenarios high for this required precision of airfield runway.
Invention content
The technical problem to be solved in the present invention is for the defects in the prior art, to provide a kind of airfield runway high roadbed
The method of quick indirect determination moisture content in construction.
The technical solution adopted by the present invention to solve the technical problems is：
The present invention provides in a kind of construction of airfield runway high roadbed that quickly the method for indirect determination moisture content, this method include
Following steps：
S1, airfield runway high roadbed construction in, high roadbed construction filling body include bottom filling body, Yi Jiyi
Filling body is waited for above filling body, more waddys are buried in filling body, and waddy top is waiting for exposing centainly above filling body
Length；
It after the completion of S2, waddy are embedded, treat filling body and carries out filling body making, after the completion of making, set on the top of waddy
Wood moisture detector is set, the aqueous rate score of timber is measured by Wood moisture detector；And according to moisture content and soil
The soil moisture content of filling body is calculated in conversion formula between earth moisture content；
S3, the natural moisture content for measuring various fillers in high roadbed construction, pass through Changes in weather situation, the water absorption of bottom
And the windage of filling body moisture when filling that paves calculates the water ultimately joined, and embankment construction is made to reach best aqueous
Rate；
S4, water is ultimately joined according to what is be calculated, the mode for adding water or being exposed to the sun is taken to filling body, adjusted soil and contain
Water rate, reaches optimum moisture content；
S5, filling body is rolled, and measures the moisture content after rolling, ensure that it reaches optimum moisture content.
Further, the specific method of step S1 of the invention is：
Crushing processing is carried out to construction area, it is 1m that thickness is filled in setting, is layouted according to the grid of 10m*10m,
The waddy of 1.2m long, diameter 3cm are inserted into the point laid, lower layer's soil body depth that waddy is squeezed into filling body is
0.1m fills empty paving layer thickness control in 1m, and it is 0.1m that waddy, which is exposed at and fills the length of empty laying or more,.
Further, the specific method of step S2 of the invention is：
By waddy fill the control of empty overlay thickness 1m, and carry out making, after making is completed 2 hours, starts to survey
Determine the moisture content that waddy is close to Tu Mianchu, a waddy measures 3 aqueous rate scores, minimum to ensure 30% sampling rate, and takes
Sample quantity is no less than 3 waddys.
Further, if the moisture content of waddy is unknown in step S2 of the invention, test is determined by the following method
The gear of moisture content：
The wood sample that moisture content is average is taken, be divided into 1-4 grades with Wood moisture detector measures moisture content respectively, and each
Shelves measured value is recorded, and the average value of each shelves measured value is taken；Wood sample is sent into baking oven, is contained by oven method measurement
Water rate；Then it makes comparisons with 4 cell means, it is corresponding with the immediate numerical value of moisture content that oven method measures in being averaged
Gear, subsequent measurements are secured to this gear.
Further, the conversion formula in step S2 of the invention between moisture content and soil moisture content is：
The moisture content of soil=Wood moisture detector measured value+(temperature, which corresponds to increased moisture content+humidity and corresponds to, to be increased
Moisture content)/2.
Further, the method tool of the natural moisture content of various fillers in high roadbed construction is measured in step S3 of the invention
Body is：
Moisture content W%=(M1+M2+M3) × 100/M when the earthwork paves；
Quality × natural moisture content of M1-raw material；
M2-reaches the water M2=M × Wa%-M1 being added when optimum moisture content；
The optimum moisture content of Wa-mixture；
The lost quality of moisture in M3-construction transport, paving process；
The gross mass of M-mixture.
Further, the method for ultimately joining water is calculated in step S4 of the invention is specially：
Increase and decrease water content=mixture gathers materials natural aqueous quality+moisture loss quality containing water quality-
Relative difference of the moisture content apart from optimum moisture content is calculated according to above-mentioned formula, takes the side for adding water or being exposed to the sun
Formula carries out impact-rolling again after adjusting soil moisture content.
The beneficial effect comprise that：Quick indirect determination moisture content in the airfield runway high roadbed construction of the present invention
Method, 1, Wood moisture detector it is cheap, it is easy to carry, be suitable for fast-field evaluation timber moisture content.2, lead to
It crosses timber and is inserted into the soil body, measure moisture content indirect determination and go out soil moisture content.3, waddy can be effectively played as mark post
Control the effect of filling body virtual resurfacing thickness.4, waddy is easy to get and cheap, and cost is small, pollution-free to be influenced on the quality of filling body
It is negligible.5, result is fed back at once, can quickly be measured soil moisture content according to relational graph, be saved test period, accelerate
Duration improves work efficiency.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the increased moisture content graph of relation of temperature waddy opposite with soil of the embodiment of the present invention；
Fig. 3 is the increased moisture content graph of relation of humidity waddy opposite with soil of the embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Quickly the method for indirect determination moisture content includes following step in the airfield runway high roadbed construction of the embodiment of the present invention
Suddenly：
The first step：Embedded waddy is in filling body；
Thickness 1m is filled in crushing region, is layouted according to the grid of 10m*10m, by 1.2m long, the wood of diameter 3cm
Rod is inserted into the point laid, and squeezes into lower layer soil body 0.1m, fills empty paving layer thickness control in 1m, exposed 0.1m.
Second step：Filling body making measures moisture content；
Virtual resurfacing thickness (1m) is carried out by waddy to control, making is completed, and starts to measure (waddy is close to Tu Mianchu) after 2 hours
Moisture content, a waddy measure 3 aqueous rate scores, at least ensure 30% sampling rate, and no less than 3.
The operating procedure of Wood moisture detector is：
1, battery is loaded onto, " HoLD " key is pressed and is once switched on.
2, it after being switched on, presses " ENTER " key and seeds may be selected, share 4 gear seeds and may be selected.In the light of actual conditions select here
It is measured on 2 gears.When measurement, two probes will be inserted into seeds simultaneously.
3, " ENTER " key lockable Wood moisture reading is pressed, while having " HOLD " display in LCD screen, then by then releasing
Locking.
4, long-press " HOLD " key will shutdown after 2 seconds.
5, it presses " SET " key, opens backlight, then by then closing backlight；Long-press " SET " key 2S, MAX start to flicker, indicate into
Enter parameter setting state, flicker display will be recycled successively by pressing " ENTER " key again at this time：MAX- Wood moistures currently read-DEG C-
℉.Finally press the determination of " SET " key.(1) when MAX flickers, " SET " key is pressed, Wood moisture reading is the maximum value measured；
(2) when Wood moisture, which is read, to be flickered, press " SET " key, Wood moisture reading is the current value that measures, (3) when DEG C flickering,
It presses " SET ", air themperature unit is selected as degree Celsius；(4) press " SET " key air themperature unit and are selected as China when ℉ flickers
Family name's degree；
6, in 2 minutes, if without any button operation and unmeasured Wood moisture, by automatic shutdown.
Determine gear：
If Wood moisture to be measured is unknown, gear can be determined by the following method:
The average wood sample of water intaking point first, measures moisture for 1-4 grades, and each shelves measured value respectively with instrument
It records.Sample is immediately sent into baking oven, moisture content is measured by oven method.Then compared with 4 cell means, which
The numerical value that gear measures is close, measures later and is secured to this gear.
The moisture content of timber is not also real soil moisture content, it has relationship with Atmosphere temp.and RH, and intermediate there are one
Fixed transformational relation, the data measured with moisture detector during being filled according to airport test section earthwork early period are dried with laboratory
The data (3000 groups) that case measures are compared, and obtain the curve graph such as Fig. 2 and Fig. 3.
The moisture content of soil=Wood moisture detector+【Increased moisture content (temperature)+increased moisture content (humidity)】/
2, it is illustrated that on other humidity for not marking, the moisture content value added under temperature conditions uses interpolation method value.
Third walks：The water increased or decreased needed for calculating
The composition of the water content of filling material
In Aerodrome construction, the natural moisture content of various fillers is measured first, is determined and is reached addition needed for optimum moisture content
Water, while the windage of filling body moisture determines when being filled by Changes in weather situation, next layer of water absorption and paving
The water ultimately joined, the final water content determined before rolling.Water content when only rolling could be reached close to optimum moisture content
To best rolling effect.
To sum up analysis is drawn a conclusion：
Water content W%=(M1+M2+M3) × 100/M when the earthwork paves；
Quality × natural moisture content of M1-raw material；
M2-reaches the water M2=M × Wa%-M1 being added when optimum moisture content；
The optimum moisture content of Wa-mixture；
The lost quality (empirically determined according to test section) of moisture in M3-construction transport, paving process；
The gross mass of M-mixture.
4th step：Moisture increases or decreases
Increase and decrease water content=mixture gathers materials natural aqueous quality+moisture loss quality (experience) containing water quality-.According to upper
Relative difference of the moisture content apart from optimum moisture content obtained by formula is stated, after taking the mode for adding water to be exposed to the sun to adjust soil moisture content again
Carry out impact-rolling.
5th step：Moisture content and compactness are measured after rolling
The mixture moisture of the Accurate Determining of the representative natural moisture content to gather materials and links of constructing scatters and disappears
The estimation of amount is to control the key link of water content.Moisture content is surveyed after rolling calculates compactness in order to save test period acceleration
Upper layer filling body fills.
The present invention measures the moisture content of filling body using the waddy being inserted into filling body plus Wood moisture detector, than existing
The faster convenience of method of field alcohol combustion method and laboratory's baking oven drying, and waddy can be used as the mark that thickness is filled in control
Bar has saved the duration, ensure that quality.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
1. the quick method of indirect determination moisture content in a kind of construction of airfield runway high roadbed, which is characterized in that this method includes
Following steps：
S1, in the construction of airfield runway high roadbed, the filling body of high roadbed construction includes the filling body of bottom, and has filled
Filling body is waited for above body, more waddys is buried in filling body, waddy top is waiting for exposing certain length above filling body；
It after the completion of S2, waddy are embedded, treat filling body and carries out filling body making, after the completion of making, wood is set on the top of waddy
Material moisture detector measures the aqueous rate score of timber by Wood moisture detector；And contained according to moisture content and soil
The soil moisture content of filling body is calculated in conversion formula between water rate；
S3, measure high roadbed construction in various fillers natural moisture content, by Changes in weather situation, the water absorption of bottom and
The windage of filling body moisture when filling that paves calculates the water ultimately joined, and embankment construction is made to reach optimum moisture content；
S4, water is ultimately joined according to what is be calculated, the mode for adding water or being exposed to the sun is taken to filling body, adjusts soil water-containing
Rate reaches optimum moisture content；
S5, filling body is rolled, and measures the moisture content after rolling, ensure that it reaches optimum moisture content.
2. the method for quick indirect determination moisture content, feature in airfield runway high roadbed construction according to claim 1
It is, the specific method of step S1 is：
Crushing processing is carried out to construction area, it is 1m that thickness is filled in setting, is layouted according to the grid of 10m*10m, will
The waddy of 1.2m long, diameter 3cm are inserted into the point laid, and it is 0.1m that waddy, which squeezes into lower layer's soil body depth in filling body,
Empty paving layer thickness control is filled in 1m, it is 0.1m that waddy, which is exposed at and fills the length of empty laying or more,.
3. the method for quick indirect determination moisture content, feature in airfield runway high roadbed construction according to claim 2
It is, the specific method of step S2 is：
By waddy fill the control of empty overlay thickness 1m, and carry out making, after making is completed 2 hours, starts to measure wood
Rod is close to the moisture content of Tu Mianchu, and a waddy measures 3 aqueous rate scores, minimum to ensure 30% sampling rate, and samples number
Amount is no less than 3 waddys.
4. the method for quick indirect determination moisture content, feature in airfield runway high roadbed construction according to claim 1
It is, if the moisture content of waddy is unknown in step S2, determines the gear of test moisture content by the following method：
The wood sample that moisture content is average is taken, be divided into 1-4 grades with Wood moisture detector measures moisture content respectively, and each shelves are surveyed
Definite value is recorded, and the average value of each shelves measured value is taken；Wood sample is sent into baking oven, is measured by oven method aqueous
Rate；Then it makes comparisons with 4 cell means, it is corresponding with the immediate numerical value of moisture content that oven method measures in being averaged
Gear, subsequent measurements are secured to this gear.
5. the method for quick indirect determination moisture content, feature in airfield runway high roadbed construction according to claim 1
It is, the conversion formula in step S2 between moisture content and soil moisture content is：
The moisture content of soil=Wood moisture detector measured value+(temperature corresponds to increased moisture content+humidity and corresponds to increased contain
Water rate)/2.
6. the method for quick indirect determination moisture content, feature in airfield runway high roadbed construction according to claim 1
It is, the method that the natural moisture content of various fillers in high roadbed construction is measured in step S3 is specially：
Moisture content W%=(M1+M2+M3) × 100/M when the earthwork paves；
Quality × natural moisture content of M1-raw material；
M2-reaches the water M2=M × Wa%-M1 being added when optimum moisture content；
The optimum moisture content of Wa-mixture；
The lost quality of moisture in M3-construction transport, paving process；
The gross mass of M-mixture.
7. the method for quick indirect determination moisture content, feature in airfield runway high roadbed construction according to claim 1
It is, the method that the water finally increased or decreased is calculated in step S4 is specially：
Increase and decrease water content=mixture gathers materials natural aqueous quality+moisture loss quality containing water quality-
Relative difference of the moisture content apart from optimum moisture content is calculated according to above-mentioned formula, takes the mode tune for adding water or being exposed to the sun
Impact-rolling is carried out again after section soil moisture content.
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Cited By (1)
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Application publication date: 20180928 |