CN105178151A - Technique for constructing water-saving moisture-preserving maintenance film and geogrid combined maintenance cement stabilizing structural layer - Google Patents
Technique for constructing water-saving moisture-preserving maintenance film and geogrid combined maintenance cement stabilizing structural layer Download PDFInfo
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- CN105178151A CN105178151A CN201510509713.5A CN201510509713A CN105178151A CN 105178151 A CN105178151 A CN 105178151A CN 201510509713 A CN201510509713 A CN 201510509713A CN 105178151 A CN105178151 A CN 105178151A
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Abstract
The invention provides a technique for constructing a water-saving moisture-preserving maintenance film and geogrid combined maintenance cement stabilizing structural layer. According to the technique, high-hydroscopicity water-saving moisture-preserving maintenance film is used as a covering article, a geogrid is pressed on the maintenance film, and thus maintenance of a cement stabilizing structure is achieved. The technique specifically comprises the operating steps that the cement stabilizing structural layer is tightly covered with the water-saving moisture-preserving maintenance film, the maintenance film is covered with the geogird, and the geogird is pressed every 5-10 meters. According to the technique, by using the water-saving moisture-preserving maintenance film, escape of heat generated by absorbing sun irradiation and heat generated when the cement stabilizing structure hydrates in daytime can be effectively slowed down, and meanwhile the rising and falling speeds of the maintenance temperature can be regulated; the adopted geogrid is light, is a plastic planar net material having certain flexibility and can be sheared and connected on site easily, geogrids can also be in lap joint in an overlapped mode, and construction is easy and convenient; the construction technique has the characteristics that water is saved by multiple times, efficient moisture preservation is achieved, a good moisture preservation effect is achieved, construction is convenient, the period is short, cost is low, and environmental friendliness is achieved; the construction period can be effectively shortened, and construction cost is reduced.
Description
Technical field
The invention belongs to highway maintenance field, especially relate to one
water-saving moist keeping maintenance film and the steady deck construction technology of geo-grid compound cultivation unboiled water.
Background technology
At present, a large amount of employing cement stabilized type structure types in the design of highway engineering road structure basic unit, this structure will carry out moisture-heat preservation health after paving, having rolled, so that the structure for new making builds one have the care environments meeting temperature and humidity and require, to improve cement stabilizing structure early strength, and the steady structure crack of anti-sealing, ensure engineering entity quality.In practice of construction, concerning a concrete cement stabilizing class formation, should the combined factors such as the resource situation that has of geographical position residing for structure, amblent air temperature, gain in strength requirement, locality consider to select the health-preserving method that maintenance effect is good, maintenance cost is low.Common health-preserving method has: damp sand health, asphalt emulsion health and watering health, health of wherein sprinkling water is a kind of relatively economical, easily method.
The area that north day and night temperature is large, air humidity is little, natural wind is large, water resource lacks, adopt covers watering health more.After watering, coordinate moisturizing, insulations such as covering geotextiles, straw screen or mat, gunnysack, geotextiles, Polypropylence Sheet, film.But front four kinds of cladding materials not only the water conservation time shorter, need often to supplement watering, manually, machinery drop into and health water supply volume also considerable, and their heat insulation effects under dampness are poor, are comparatively difficult to ensure and demonstrate,prove Stabilized Soil surface moisture and health temperature between whole preserving period.Adopt Polypropylence Sheet, film, covering and heat insulating effect is better, but after lack of water, needs repeatedly to raise overburden watering and cover and just can guarantee the steady layer surface wettability of water between whole preserving period.The as easy as rolling off a log loss of this process material, can affect health quality as changed not in time, changing and too frequently can increase cost again, and structure temperature can affect by ambient temperature and curing water temperature and have significant change during raising overburden watering, occur that surface is shunk, affect gain in strength.
Summary of the invention
The object of the invention is to: provide a kind of
water-saving moist keeping maintenance film and the steady deck construction technology of geo-grid compound cultivation unboiled water, by less input, can solve the problem; Effectively can ensure the humidity in water steady structure health process and temperature, thus improve the effect of the cracking resistance of water steady deck, early strength and abrasion-resistant qualities, and the steady deck of water after health is shaping rear without pitted skin, without obvious microcrack.
For achieving the above object, the technical solution used in the present invention is: provide a kind of
water-saving moist keeping maintenance film and the steady deck construction technology of geo-grid compound cultivation unboiled water, adopt the high-hydroscopicity water-saving moist keeping maintenance film being usually used in cement concrete constructions maintenance to be overburden, cover the health being pressed in and curing membrane realizing the steady class formation of water in conjunction with geo-grid.Concrete implementation step is as follows:
(1) aspect soaks: after the steady deck roller-compaction of water, first will guarantee that road surface is moistening, reaches wetting state before health;
(2) curing film is laid: had by water-saving moist keeping maintenance film the one side of macromolecular core material to be close to the steady deck surface of water (guaranteeing that film inner macromolecule material fully can absorb water, evenly heave); The lap width of adjacent curing film will be guaranteed to be not less than 10cm, and the steady deck edge of water must encase with curing film, and stay more be no less than 10cm be used for press sand pocket;
(3) pressure geo-grid is covered: lay about 5m ~ 10m curing film on the steady deck of water after, closely should cover pressure by geo-grid immediately, along centre and the both sides of the edge of the steady deck of water, along laying direction, successively the curing film completed and geo-grid are pushed down with sand pocket, prevent wind from blowing away, sand pocket interval is preferably 5m ~ 10m.
Described water-saving moist keeping maintenance film with
novelcontrolled macromolecular material is core, take plastic sheeting as carrier, can adhere to the macromolecule of the moisture absorbing own wt 200 times; Can be divided into individual layer water-saving moist keeping maintenance film and double-layer water-saving moisturizing and curing membrane in application, wherein said individual layer water-saving moist keeping maintenance film is one deck plastic foil and one deck water-absorbing-retaining polymer material layer; It is one deck plastic foil, layer of non-woven fabric that described bilayer receives moisturizing and curing membrane, is therebetween water-absorbing-retaining polymer material layer.
Described geo-grid, the high molecular polymers such as selection polypropylene, polyvinyl fluoride are through the grid screen of the two-dimensional mesh trellis of thermoplastic or mold pressing.Lay geo-grid, when geo-grid is laid, bottom surface should be smooth, closely knit, generally should tile, stretching, must not be overlapping, must not curling, kink, two adjacent width geo-grid need overlap 0.2m, and laterally carry out interting with No. 8 iron wires every 1 meter to geo-grid overlap along roadbed and connect.
Described compacting weight can select one or more in sand pocket, earth bag, stone, steel plate and steel pipe, prioritizing selection sand pocket.
Operating principle: water-saving moist keeping maintenance film absorbs the health moisture that the steady deck surface point of water is spilt, and expands and becomes transparent crystal, aqueous water is become solid water, then by capillarity, to the steady deck infiltration of water; Constantly absorb the evaporation water of the steady deck of water simultaneously, within a curing time, only need water a water, water-saving moist keeping maintenance film can ensure that water steady deck surface keeps moistening, relative humidity >=90%.
The use of water-saving moist keeping maintenance film, effectively can slow down and absorb the effusion producing heat when shining upon self aquation of steady deck with water daytime, curing temperature rising or falling speed can be regulated again simultaneously, avoid that water steady deck variations in temperature is too fast, maintenance excessive temperature differentials, ensureing that curing temperature meets the demands, guaranteeing that inner and top layer and top layer and the external world the temperature difference of the steady deck of water is unlikely and produce warm plastic forming because of excessive.The geo-grid used, quality is light, is the Plastic Flat veil material with certain flexibility, is easy to on-the-spot cutting and connection, and can overlapping overlap, easy construction, does not need special construction machinery and professional and technical personnel yet.
This technology is specially adapted to dry, wind-force is large, water resources shortage, and the large steady deck of regional high-grade highway water of day and night temperature shaping after covering health, other similar structures also can refer to use, double-layer water-saving moisturizing and curing membrane can be adopted, to guarantee its insulation, moistening effect to a greater extent in the environment region that comparatively arid is large with the temperature difference.
This
inventionbeneficial effect be: utilize water-saving moist keeping maintenance film moisturizing, high insulating effect, light transmittance is high, can adsorb or discharge the function of the evaporation water that healthy water and the steady deck aquation of water volatilize at any time, add geo-grid cover pressure speed of application fast, cover that pressure is effective, environmental pollution is few and affect the principle shined upon hardly, reach and improve efficiency of construction, guarantee and improve the object of the steady deck maintenance quality of water; This construction technology has high power water saving, efficient moisture-retention, good insulation, convenient and quick construction, the cycle is short, cost is low, and saving of labor is energy-conservation, the feature of environmental protection, effectively can shorten the construction period, saves construction costs.
Accompanying drawing explanation
fig. 1the signal of the steady deck of water-saving moisturizing curing water
figure;
fig. 2the structural representation of individual layer water-saving moist keeping maintenance film
figure;
fig. 3the structural representation of double-layer water-saving moisturizing and curing membrane
figure;
fig. 4geo-grid structural representation
figure;
in figure: 1, the steady deck of water; 2, water-saving moist keeping maintenance film; 3, geo-grid; 4, sand pocket; 5, roadbed; 6, plastic foil; 7, water-absorbing-retaining macromolecular material; 8, non-woven fabrics.
Detailed description of the invention
First construction technical staff is familiar with construction drawing, understands physical dimension and the line style of construction section.Next is the preparation of material and equipment, concrete water-saving moist keeping maintenance film 2, the geo-grid 3 of quantity abundance is got ready according to Construction Plan, according to " concrete water-saving moist keeping maintenance film " (JG/T188-2010), water-saving moist keeping maintenance film 2 is tested, reach criterion of acceptability.Rationalization constructs well required sprinkling truck, sprayer etc., and concrete operations are as follows.
(1) aspect soaks: after water steady deck 1 roller-compaction, first will guarantee that road surface is moistening before health.During practical operation, according to its aspect moisture loss situation, not moisturizing, mode such as local moisturizing, watering etc. can be adopted; The direct laying water-saving moist keeping maintenance film of not moisturizing, this situation be applicable to cloudy day, calm weather or have a humid climate, the situation such as few wind; The employing sprayer of local moisturizing sprays.During sprinkling, moisture or water smoke should be made to trickle down evenly, continuously, lightly at the steady deck of water on the surface, meet the requirements of wetting state, can water-saving moist keeping maintenance film be laid.The employing watering of dry state is wetting.At the steady deck 1 of water on the surface by sprinkling truck spray water equably, make it meet the requirements of wetting state, can curing film be laid.
(2) water-saving moist keeping maintenance film 2 is laid: after water steady deck 1 surface is fully moistening, water-saving moist keeping maintenance film 2 package roll is arranged on the steady deck of water 1, fix water-saving moist keeping maintenance film 2 one end, in the axle center of curing film, pierce into the reinforcing bar (or other similar rod shape things) that an about 2.5m is long, had by water-saving moist keeping maintenance film 2 one side of water-absorbing-retaining macromolecular material 7 to be close to water steady deck 1 surface (guaranteeing that film inner macromolecule material fully can absorb water, evenly heave).Then be about with one two that the long rope sling of 3.5m lives reinforcing bar, rolled up lay forward by people's towing astern curing film, second people is in the same way immediately following thereafter subsequently, and the lap width of adjacent water-saving moist keeping maintenance film 2 will be guaranteed to be not less than 10cm.Water steady deck 1 edge must encase with water-saving moist keeping maintenance film 2, and stays more and be no less than 10cm and be covered on roadbed 5, is used for pressing sand pocket 4.
(3) pressure geo-grid 3 is covered: lay about 5m ~ 10m curing film on the steady deck 1 of water after, closely pressure should be covered immediately with geotechnological lattice 3, along centre and the both sides of the edge of the steady deck 1 of water, along laying direction, successively the curing film completed and geo-grid are pushed down with sand pocket 4, prevent wind from blowing away, sand pocket interval is preferably 5m ~ 10m.
Geo-grid 3 covers pressure can ensure that water-saving moist keeping maintenance film 2 and the steady layer 1 of water are combined closely, and does not affect again while losing maintenance moisture because of reasons such as wind scrape off to shine upon to promote health body aquation at guarantee water-saving moist keeping maintenance film 2.Simplify construction technology, decrease pollution when originally covering with other materials and labour intensity, and geo-grid 3 can repeated application in basic unit and bitumen layer.
Use water-saving moist keeping maintenance film with
novelcontrolled macromolecular material is core, take plastic sheeting as carrier, can adhere to the macromolecule of the moisture absorbing own wt 200 times; Be divided into individual layer curing film and double-deck curing film in application, wherein said individual layer water-saving moist keeping maintenance film is one deck plastic foil 6 and one deck water-absorbing-retaining macromolecular material 7; Described double-layer water-saving moisturizing and curing membrane is one deck plastic foil 6, layer of non-woven fabric 8, is therebetween water-absorbing-retaining macromolecular material 7.Wherein or area that Arid Problem serious large at day and night temperature, adopts double-layer water-saving moisturizing and curing membrane more.
The moisture of the own wt 200 times of curing film and absorbed inside can slow down the effusion absorbing generation heat when shining upon self aquation of steady structure with water daytime, curing temperature rising or falling speed can be regulated again simultaneously, avoid that water steady layer variations in temperature is too fast, maintenance excessive temperature differentials, ensureing that curing temperature meets the demands, guaranteeing that inner and top layer and top layer and the external world the temperature difference of the steady layer of water is unlikely and produce warm plastic forming because of excessive.
Claims (4)
1. water-saving moist keeping maintenance film and the steady deck construction technology of geo-grid compound cultivation unboiled water, is characterized in that, adopts high-hydroscopicity water-saving moist keeping maintenance film to be overburden, cover the health being pressed in and curing membrane realizing the steady class formation of water in conjunction with geo-grid; Concrete implementation step is as follows:
(1) aspect soaks: after the steady deck roller-compaction of water, first will guarantee that road surface is moistening, reaches wetting state before health;
(2) curing film is laid: had by water-saving moist keeping maintenance film the one side of macromolecular core material to be close to the steady deck surface of water; The lap width of adjacent water-saving moist keeping maintenance film will be guaranteed to be not less than 10cm, and the steady deck edge of water must encase with curing film, and stay more be no less than 10cm be used for press sand pocket;
(3) pressure geo-grid is covered: lay about 5m ~ 10m curing film on the steady deck of water after, closely should cover pressure by geo-grid immediately, along centre and the both sides of the edge of the steady deck of water, along laying direction, successively the curing film completed and geo-grid are pushed down with sand pocket, prevent wind from blowing away, sand pocket interval is preferably 5m ~ 10m.
2. a kind of water-saving moist keeping maintenance film according to claim 1 and the steady deck construction technology of geo-grid compound cultivation unboiled water, it is characterized in that, described high-hydroscopicity water-saving moist keeping maintenance film, can choose individual layer water-saving moist keeping maintenance film and double-layer water-saving moisturizing and curing membrane;
Described individual layer water-saving moist keeping maintenance film is one deck plastic foil and one deck water-absorbing-retaining polymer material layer;
Described double-layer water-saving moisturizing and curing membrane is one deck plastic foil, layer of non-woven fabric, is water-absorbing-retaining polymer material layer therebetween, is used for that day and night temperature is large and arid is seriously regional.
3. a kind of water-saving moist keeping maintenance film according to claim 1 and the steady deck construction technology of geo-grid compound cultivation unboiled water, peculiarly very more to be, described geo-grid, the high molecular polymers such as selection polypropylene, polyvinyl fluoride are through the grid screen of the two-dimensional mesh trellis of thermoplastic or mold pressing.
4. a kind of water-saving moist keeping maintenance film according to claim 1 and the steady deck construction technology of geo-grid compound cultivation unboiled water, to be peculiarly very more, described compacting weight can select one or more in sand pocket, earth bag, stone, iron block, preferably uses sand pocket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510509713.5A CN105178151A (en) | 2015-08-19 | 2015-08-19 | Technique for constructing water-saving moisture-preserving maintenance film and geogrid combined maintenance cement stabilizing structural layer |
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| CN201510509713.5A CN105178151A (en) | 2015-08-19 | 2015-08-19 | Technique for constructing water-saving moisture-preserving maintenance film and geogrid combined maintenance cement stabilizing structural layer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544939A (en) * | 2016-09-27 | 2017-03-29 | 中铁五局集团有限公司 | A kind of steady underlayment of water, base layer construction craft |
| CN109605868A (en) * | 2018-12-29 | 2019-04-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of compound curing film of concrete high-efficiency heat and moisture preserving with photothermal conversion effect |
| CN113463934A (en) * | 2021-07-20 | 2021-10-01 | 江西省交通工程集团建设有限公司 | Temperature-control anti-cracking curing method for mass concrete |
| CN113684743A (en) * | 2021-09-13 | 2021-11-23 | 北方工业大学 | Self-moisture-retaining concrete curing film and preparation and laying methods thereof |
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|---|---|---|---|---|
| US1768366A (en) * | 1928-07-02 | 1930-06-24 | American Bitumuls Company | Processes for retaining water in concrete for the hydration of cement |
| CN200971467Y (en) * | 2006-05-09 | 2007-11-07 | 杨勃 | Maintenance pad for urban cement concrete road surface |
| CN102677910A (en) * | 2012-05-25 | 2012-09-19 | 长沙圣华科技发展有限公司 | Wind-preventing method for water-saving moisture-preserving concrete maintaining film in strong wind environment |
| CN102877388A (en) * | 2012-10-22 | 2013-01-16 | 中交第三公路工程局有限公司 | Method and system for water-saving and moisture-retention maintenance for cement-stabilized macadam base |
| JP5239532B2 (en) * | 2008-06-16 | 2013-07-17 | 横浜ゴム株式会社 | Curing method for moisture-curing elastic pavement |
-
2015
- 2015-08-19 CN CN201510509713.5A patent/CN105178151A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1768366A (en) * | 1928-07-02 | 1930-06-24 | American Bitumuls Company | Processes for retaining water in concrete for the hydration of cement |
| CN200971467Y (en) * | 2006-05-09 | 2007-11-07 | 杨勃 | Maintenance pad for urban cement concrete road surface |
| JP5239532B2 (en) * | 2008-06-16 | 2013-07-17 | 横浜ゴム株式会社 | Curing method for moisture-curing elastic pavement |
| CN102677910A (en) * | 2012-05-25 | 2012-09-19 | 长沙圣华科技发展有限公司 | Wind-preventing method for water-saving moisture-preserving concrete maintaining film in strong wind environment |
| CN102877388A (en) * | 2012-10-22 | 2013-01-16 | 中交第三公路工程局有限公司 | Method and system for water-saving and moisture-retention maintenance for cement-stabilized macadam base |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544939A (en) * | 2016-09-27 | 2017-03-29 | 中铁五局集团有限公司 | A kind of steady underlayment of water, base layer construction craft |
| CN109605868A (en) * | 2018-12-29 | 2019-04-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of compound curing film of concrete high-efficiency heat and moisture preserving with photothermal conversion effect |
| CN113463934A (en) * | 2021-07-20 | 2021-10-01 | 江西省交通工程集团建设有限公司 | Temperature-control anti-cracking curing method for mass concrete |
| CN113684743A (en) * | 2021-09-13 | 2021-11-23 | 北方工业大学 | Self-moisture-retaining concrete curing film and preparation and laying methods thereof |
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Application publication date: 20151223 |