CN105568820A - Road engineering construction dust suppression treatment method and dust suppressant applied to road engineering construction dust suppression treatment - Google Patents
Road engineering construction dust suppression treatment method and dust suppressant applied to road engineering construction dust suppression treatment Download PDFInfo
- Publication number
- CN105568820A CN105568820A CN201510908138.6A CN201510908138A CN105568820A CN 105568820 A CN105568820 A CN 105568820A CN 201510908138 A CN201510908138 A CN 201510908138A CN 105568820 A CN105568820 A CN 105568820A
- Authority
- CN
- China
- Prior art keywords
- slaked lime
- engineering construction
- dust suppression
- lime
- construction
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
Abstract
The invention relates to a road engineering construction dust suppression treatment method and a dust suppressant applied to road engineering construction dust suppression treatment. The method comprises the following steps: before mixing and stirring of road base lime soil, performing forced high-speed stirring and mixing pretreatment on slaked lime and kitchen plant waste grease to suppress the amount of flying dust produced during lime soil mixing and stirring of slaked lime; mixing the treated slaked lime with clayey soil in a stirring way according to a conventional lime soil construction method by taking the treated slaked lime as a curing agent to make road base mixed lime soil; controlling the water content according to the lime soil construction requirement in order to perform compaction construction under an optimal water content condition. The kitchen plant waste grease is doped into ordinary slaked lime to perform high-speed forced stirring and pretreatment, a certain emulsification effect is achieved, and the oxidation characteristic of the emulsified grease and an oleic acid component further promote the formation of hydrate reaction capability and particle bonding capability, thereby enhancing the strength and rigidity of the lime soil.
Description
Technical field
The invention belongs to road construction field, be specifically related to a kind of dust suppression processing method of highway engineering construction and the dust suppressant for highway engineering construction dust suppression process.
Background technology
Pay close attention to because haze problem is subject to each side day by day, and become the significant problem of influence area environment and health of human body, along with the raising of environmental consciousness, the air pollution that control airborne dust causes has become common recognition and the common prescription of the whole society.Dust-proof and depositing dust in highway engineering construction process is the hot issue that the current whole society is concerned about, if effectively can reach the object of depositing dust in Practical Project construction, will be conducive to reducing air pollution, improving air quality.Highway engineering construction scene is often in openr region, and the on-the-spot major part of practice of construction does not implement effective measurements for reduction, cause dust raising phenomenon around job site commonplace, cause more serious dust pollution question to around job site operating personnel and place.
In the past, because pollution caused by coal dust problem in mining listed corporations production scene is more outstanding, compare the depositing dust problem paying attention to production scene, forming dust suppression shell on the surface as emulsion liquid being sprayed at dump, can dustproof effect be played; But in the dirt mix work progress of highway construction, require slaked lime should as far as possible with raw material soil Homogeneous phase mixing, the dust that mainly will solve slaked lime itself in mixed process disperses effect, and thus said method can not directly be used as the dust suppression measure of dirt mix process medium-slaking lime.
Also dust-removing method and the measure of various ways is developed, as coal-bed flooding, high-pressure fog or aerosol, foam, chemical dust suppressant, physics such as to block at method and the technique in Practical Project.Above dust-removing method is passive measurements for reduction substantially, usually and be not suitable for the depositing dust of road construction site: as dirt mix needs strictly to control moisture, be not suitable for adopting watering or water-filling method to carry out depositing dust; High-pressure fog or foam dust suppression are then suitable for using among a small circle and needing special equipment; Physics blocks and is also difficult to carry out at the scene of opening; Road occupation dirt belongs to chemically stable soil, and utilize the cementation of lime to improve the strength and stiffness of dirt, chemical dust suppressant is used for dirt and fails to understand dirt performance impact, and cost is higher.At present, bioenergy is generally confined to the utilization of meal kitchen waste oil, fermentation forms biogas and synthesize PHA etc., as those disclosed such as Chinese patent 201510203237.4,201110373951.X and 201320890025.4.
Summary of the invention
The present invention seeks to the highway engineering construction dust suppression processing method that a kind of improvement is provided to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution used in the present invention is: a kind of highway engineering construction dust suppression processing method, it is included in carries out being uniformly mixed to obtain dirt using as the slaked lime of curing compound and cohesive soil, before slaked lime and cohesive soil are uniformly mixed, first slaked lime is mixed with meal kitchen waste oil action of forced stirring, utilize meal kitchen waste oil to form certain emulsifying effectiveness to slaked lime, reach and restrain the disperse effect and produce anti-dust effect of slaked lime particulate in dirt whipping process.
Optimally, the addition of described meal kitchen waste oil is 1% ~ 5% of described slaked lime quality, and can play good anti-dust effect, cost is lower.
Further, described meal kitchen waste oil selects conventional plant meal kitchen waste grease, and its saponification number is 180 ~ 190mgKOH/g; The mass content of palmitic acid (C16:0) is 2 ~ 14%, and the mass content of linoleic acid (C18:2) is 15 ~ 50%.On this basis, a preferred aspect of the present invention: wherein the mass content of palmitic acid (C16:0) is 2 ~ 14%, the mass content of linoleic acid (C18:2) is 15 ~ 50%.
In the present invention, slaked lime and meal kitchen waste oil carry out the mode that action of forced stirring mixes and are preferably: make described slaked lime and described meal kitchen waste oil under air-proof condition, carry out action of forced stirring with the mixing speed of 2000 ~ 3000 revs/min.
As a kind of preferred embodiment of the present invention, the time that is uniformly mixed of described slaked lime and described meal kitchen waste oil is 5 ~ 10min, to reach the object of part emulsification.
According to the present invention, carry out being uniformly mixed to obtain dirt using as the slaked lime of curing compound and cohesive soil, the slaked lime addition wherein after dust suppression process is preferably 6% ~ 8% of described cohesive soil quality, thus is conducive to the intensity improving dirt.
According to the present invention, the water content of described dirt is pressed dirt compacting construction optimum water content and is controlled.
According to the present invention, the stirring of described dirt preferably carries out mix and blend by the road mix machinery that highway engineering construction is conventional; Further preferred according to highway engineering construction " highway road surface construction technique normalizing " JTJ034-2000 regulation carry out.
Another object of the present invention is to provide a kind of dust suppressant for highway engineering construction dust suppression process, and it is mixed 1:0.01 ~ 0.05 in mass ratio by slaked lime and meal kitchen waste oil.When carrying out road construction, carry out compacting construction by after dust suppressant and cohesive soil mix and blend, on-the-spot airborne dust can be made obviously to reduce, and the compressive strength of gained dirt and rigidity increase.
Because technique scheme is used, the present invention compared with prior art has following advantages: highway engineering construction dust suppression processing method of the present invention, meal kitchen waste oil is added in slaked lime and carries out high speed action of forced stirring, produce certain Emulsification effect, emulsifying film is formed on tiny hydrated lime particle surface, while making the alligatoring of tiny hydrated lime particle granularity, emulsifying film can keep the ventilation water flowing state on hydrated lime particle surface, in dirt late maintaining process, except producing the aquation cementation of slaked lime itself, the oxidation characteristic that grease after emulsification itself has and oleic acid content can promote the cementing power between hydrate respond and reinforcing particle further, thus the strength and stiffness of dirt is increased, further improve the mechanical property of dirt.
Accompanying drawing explanation
Accompanying drawing 1 to fall the schematic diagram in ash quantity test air channel for slaked lime of the present invention;
Accompanying drawing 2 is the comparison diagram that in embodiment 1, different slaked lime carries out dust fall test;
Accompanying drawing 3 is the compressive strength variation diagram of different dirt in embodiment 2.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
Embodiment 1
The present embodiment provides a kind of highway engineering construction dust suppression processing method, and make the slaked lime with dust suppression effect for utilization meal kitchen waste oil, its anti-dust effect method of inspection is implemented according to the following steps:
A slaked lime is crossed 2mm sieve by (), then the slaked lime after sieving is divided into 4 parts, the every part of 400g that weighs;
B () gets the used plant waste oil in common dining room by 1%, 3%, 5% of 400g niter ash quantity, weigh waste oil 4g, 12g, 20g respectively;
C slaked lime after weighing and waste oil are placed in airtight container by (), use homogenizer to carry out action of forced stirring, with the high rotating speed action of forced stirring 5 ~ 10 minutes of 2000 ~ 3000 revs/min;
D (), to every a through the mixed process slaked lime of action of forced stirring, utilizes the artificial air channel of high 46cm shown in Fig. 1, wide 23cm, long 350cm to carry out the ash quantity test that falls.Set artificial tunnel inlet wind speed in process of the test, by slaked lime after treatment by being placed in the hopper evenly free-falling at a slow speed at top, artificial air channel, dropping process medium-slaking lime falls under wind-force effect in artificial air channel.Obviously, distance of fall is far away apart from artificial tunnel inlet, and airborne dust effect is more obvious;
E () sets rectangular area by apart from the every 50cm of artificial tunnel inlet, set 7 rectangular area (see figure 1) altogether, and slaked lime is all lower falls behind the ash quantity weighing of falling of collecting each region;
F () as a comparison, weighs the common slaked lime of fat of not mixing oil that 400g crosses 2mm sieve, carry out by above-mentioned same method the ash quantity test that falls.
The display of dust fall result of the test in fig. 2, result of the test shows, under the wind-force and wind field condition of setting, slaked lime after treatment has obvious anti-dust effect, in distance origination point 3.0 ~ 3.5m region, dirt source, the ash quantity that falls of slaked lime after treatment can be reduced to less than 50% of common slaked lime, and effect is more remarkable when wind-force is less.Table 1 tests the test data obtained for dust fall amount.
Table 1:3.0 ~ 3.5m region dust fall amount experimental data
| Waste oil incorporation (%) | 0 | 1 | 3 | 5 |
| Dust fall amount (g) [wind speed 1m/s] | 0.66 | 0.16 | 0.14 | 0.17 |
| Dust fall amount (g) [wind speed 2m/s] | 3.24 | 1.47 | 1.45 | 1.16 |
Embodiment 2
In dirt, the Main Function of slaked lime is as a kind of curing compound, and by the cementing power between hydration reaction strengthening soil particle, thus the strength and stiffness improving dirt meets the strength and stiffness requirement of road basement material.Mix waste oil in common slaked lime after, although produce dust suppression effect, need to investigate dust suppression process further to the impact of slaked lime ability to cure.
The present embodiment is using road dirt as investigation object, and mainly investigate the slaked lime solidification effect after dust suppression process, paper examines content is the compressive strength of dirt, implements according to the following steps:
A () is got 4 parts of 5kg raw material soil (cohesive soil) and is tested raw material soil water content, and calculate raw material dry ground quality according to raw material soil water content;
B () is prepared 1% slaked lime, 3% slaked lime, 5% of mixing oil of mixing oil by method described in previous embodiment 1 and to be mixed oil slaked lime;
C () takes common slaked lime, 1% slaked lime, 3% slaked lime, 5% of mixing oil of mixing oil according to raw material dry ground quality respectively by 8% incorporation and to mix oil slaked lime, within 5 minutes, make it fully mix in raw material soil with mixer with slaked lime action of forced stirring;
D the water content of 4 parts of mixing dirt is adjusted to the optimum water content about 16% tested and obtain by (), calculate mould volume by diameter 5cm, height 10cm cylinder, and according to testing the maximum dry density (2.05g/cm obtained
3) take the composite soil quality of same volume, divide three layers to load in the cylindrical die of diameter 5cm, height 10cm in the mixing dirt after taking, each matching requirements prepares 3 parallel samples;
(e) after 1 day the demoulding sample is placed in the standard curing room maintenance of humidity 80%, temperature 20 °, curing age is set to 7 days, 28 days;
F the sample reaching curing age takes out by (), implement unconfined compression strength test after measurement size and quality, and test is by axial deformation 1.0mm/ minute Control experiment.
The display of Lime-Loess Strength result of the test in figure 3, according to graphical results, under two kinds of curing age conditions, all make the intensity of dirt higher than common slaked lime by the intensity that process slaked lime of mixing oil makes dirt, illustrate and common slaked lime is mixed with meal kitchen plant waste oil, not only effectively can suppress airborne dust, reduce highway construction site operation dust pollution, and be conducive to improving Lime-Loess Strength, improve the mechanical property of dirt.In addition, can find according to Strength Changes, when curing age is shorter, mix in slaked lime waste oil more time, be conducive to the performance of dirt early strength, and when curing age is longer, then the difference amount of mixing oil is not obvious to intensity effect.
In sum, the dust suppression process slaked lime utilizing meal kitchen plant waste oil to make, not only has good anti-dust effect, and can promote that Lime-Loess Strength plays, and is conducive to effective utilization of meal kitchen waste oil simultaneously, reduces depositing dust cost.Namely utilize meal kitchen plant waste oil as dust suppressant, for the comprehensive effectively utilization ratio of raising meal kitchen waste oil, reduce dust suppression processing cost, protection of the environment is very favourable.Result of the test shows, compared with haplorthod, utilize the dirt that the slaked lime after dust suppression process is formed, the mechanical properties such as its strength and deformation character, permeability and dilatancy not only do not reduce, on the contrary due to the oleic acid that contains in waste oil and oxidation, improve the cementing power of dirt, the strength and stiffness of dirt is improved to some extent, in fact the micro-grease in dirt plays a kind of effect of accelerator.Table 2 is Lime-Loess Strength performance result of the test.
Table 2: Lime-Loess Strength plays result of the test
| Waste oil incorporation (%) | 0 | 1 | 3 | 5 |
| Unconfined compression strength q u(kPa) [the 7 day length of time] | 0.732 | 1.160 | 1.370 | 1.615 |
| Unconfined compression strength q u(kPa) [the 28 day length of time] | 0.977 | 1.725 | 1.617 | 1.722 |
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (10)
1. a highway engineering construction dust suppression processing method, it is included in carries out being uniformly mixed to obtain dirt using as the slaked lime of curing compound and cohesive soil, it is characterized in that: before slaked lime and cohesive soil are uniformly mixed, first slaked lime is mixed to reach dust suppression object with meal kitchen waste oil action of forced stirring.
2. highway engineering construction dust suppression processing method according to claim 1, is characterized in that: the addition of described meal kitchen waste oil is 1% ~ 5% of described slaked lime quality.
3. highway engineering construction dust suppression processing method according to claim 1 and 2, is characterized in that: described meal kitchen waste oil is plant grease, and its saponification number is 180 ~ 190mgKOH/g.
4. highway engineering construction dust suppression processing method according to claim 1 and 2, is characterized in that: make described slaked lime and described meal kitchen waste oil under air-proof condition, carry out action of forced stirring with the mixing speed of 2000 ~ 3000 revs/min.
5. highway engineering construction dust suppression processing method according to claim 4, is characterized in that: the time that is uniformly mixed of described slaked lime and described meal kitchen waste oil is 5 ~ 10min.
6. highway engineering construction dust suppression processing method according to claim 1 and 2, is characterized in that: the slaked lime addition after dust suppression process is 6% ~ 8% of described cohesive soil quality.
7. highway engineering construction dust suppression processing method according to claim 1 and 2, is characterized in that: the water content of described dirt controls by dirt compacting construction optimum water content.
8. the construction method of highway construction according to claim 1, is characterized in that: the stirring of described dirt carries out mix and blend by the road mix machinery that highway engineering construction is conventional.
9. the construction method of the highway construction according to claim 1 or 8, is characterized in that: the mix and blend of described dirt carries out according to highway engineering construction " highway road surface construction technique normalizing " JTJ034-2000 regulation.
10. for a dust suppressant for highway engineering construction dust suppression process, it is characterized in that: it is mixed 1:0.01 ~ 0.05 in mass ratio by slaked lime and meal kitchen waste oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908138.6A CN105568820A (en) | 2015-12-10 | 2015-12-10 | Road engineering construction dust suppression treatment method and dust suppressant applied to road engineering construction dust suppression treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908138.6A CN105568820A (en) | 2015-12-10 | 2015-12-10 | Road engineering construction dust suppression treatment method and dust suppressant applied to road engineering construction dust suppression treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105568820A true CN105568820A (en) | 2016-05-11 |
Family
ID=55879410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908138.6A Pending CN105568820A (en) | 2015-12-10 | 2015-12-10 | Road engineering construction dust suppression treatment method and dust suppressant applied to road engineering construction dust suppression treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105568820A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0100656A2 (en) * | 1982-07-30 | 1984-02-15 | Miseal, Inc. | Stabilising soil |
| JPH0687643A (en) * | 1992-09-02 | 1994-03-29 | Nippon Cement Co Ltd | Method for suppressing dust generation of cement or lime |
| US20040091324A1 (en) * | 2002-07-02 | 2004-05-13 | Grain Processing Corporation | Dust suppressant and soil stabilization composition |
| NZ521650A (en) * | 2002-09-27 | 2005-05-27 | Econ Products Ltd | Dust Suppressant for use on roads, containing saponified tall oil pitch |
| CN101851489A (en) * | 2010-04-17 | 2010-10-06 | 陈维岳 | Environmental-friendly dust suppressant and preparation method thereof |
-
2015
- 2015-12-10 CN CN201510908138.6A patent/CN105568820A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0100656A2 (en) * | 1982-07-30 | 1984-02-15 | Miseal, Inc. | Stabilising soil |
| JPH0687643A (en) * | 1992-09-02 | 1994-03-29 | Nippon Cement Co Ltd | Method for suppressing dust generation of cement or lime |
| US20040091324A1 (en) * | 2002-07-02 | 2004-05-13 | Grain Processing Corporation | Dust suppressant and soil stabilization composition |
| NZ521650A (en) * | 2002-09-27 | 2005-05-27 | Econ Products Ltd | Dust Suppressant for use on roads, containing saponified tall oil pitch |
| CN101851489A (en) * | 2010-04-17 | 2010-10-06 | 陈维岳 | Environmental-friendly dust suppressant and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 王惠芬等: "石灰土的性能影响因素分析", 《河南建材》 * |
| 申长兴: "石灰土的质量控制要点", 《交通世界(运输.车辆) 》 * |
| 赵星光等: "露天矿山运输路面抑尘剂的研究与综述", 《黄金》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103382124B (en) | A kind of molybdenum tailings air-entrained concrete building block and preparation method thereof | |
| CN106380112B (en) | Hydrophobic microcapsules are in the application for improving agent on crack resistance of concrete permeability | |
| CN102633476A (en) | Building block material produced by vegetable fiber, industrial ash slag and concrete and production process thereof | |
| CN102677566B (en) | Method for regenerating concrete pavement into asphalt pavement | |
| CN103396158B (en) | A kind of Antibacterial molybdenum tailings air-entrained concrete building block and preparation method thereof | |
| CN107032696A (en) | A kind of big particle diameter regenerated coarse aggregate concrete wave resistance block and preparation method | |
| CN104891873B (en) | A kind of analog material for simulating swell-shrink characteristic tunnel surrounding and preparation method thereof | |
| CN102504827B (en) | Soil solidifying agent with compound function and use method thereof | |
| CN102923997B (en) | Method for preparing high-strength semi-regenerative coarse aggregate concretes | |
| CN108751865A (en) | Body refuse soil regeneration baking-free brick and preparation method thereof more than a kind of | |
| CN107522433A (en) | Biomass ash dreg concrete building block and preparation method thereof | |
| Zhou et al. | Evaluating the permeability properties of green bed in iron ore sintering using high resolution X-ray computed tomography and orthogonal array tests | |
| CN105016648B (en) | A kind of concrete additive and the lightweight composite block applying this additive | |
| CN104773990A (en) | Concrete with optimized mix proportion | |
| CN110668773A (en) | Landfill seepage-proofing barrier material and preparation method thereof | |
| CN105568820A (en) | Road engineering construction dust suppression treatment method and dust suppressant applied to road engineering construction dust suppression treatment | |
| CN101215135B (en) | Steel slag wall building blocks and manufacturing method thereof | |
| CN113003959A (en) | Production process for preparing composite mineral admixture by utilizing concrete residues | |
| CN105731901A (en) | Technology for producing high-strength environment-friendly inflaming-retarding waterproof and fireproof building material | |
| CN102145984A (en) | Self-curing concrete | |
| Zhou et al. | Experimental investigation on the effect of granulation moisture on the flame front propagation and pore structure in the high-temperature zone of the sinter bed | |
| CN109095834B (en) | Method for preparing recycled concrete by using unqualified premixed concrete and recycled powder | |
| CN105884277A (en) | Method for preparing concrete from heavy metal-polluted soil | |
| CN207276503U (en) | A kind of pilot plant that full recycled fine aggregate is prepared with building castoff | |
| Camacho-Tauta et al. | Full-scale evaluation in a fatigue track of a base course treated with geopolymers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160511 |
|
| RJ01 | Rejection of invention patent application after publication |