CN1196422A - Method for paving water-permeable road with cement concrete - Google Patents
Method for paving water-permeable road with cement concrete Download PDFInfo
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- CN1196422A CN1196422A CN98107098A CN98107098A CN1196422A CN 1196422 A CN1196422 A CN 1196422A CN 98107098 A CN98107098 A CN 98107098A CN 98107098 A CN98107098 A CN 98107098A CN 1196422 A CN1196422 A CN 1196422A
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Abstract
The present invention relates to a method for paving water-permeable road with cement concrete adapting for large, small roads, common and high speed road. The present invention provides a method for paving water-permeable road, wherein the water on the road surface formed by rain water will made not filter under a stable processing layer, or base layer entirely, so the base groundsill will keep stable, and a water drain layer with certain thickness can be paved on the road surface in order to drain the surface water quickly, the water splash will not happen because of vehicle and the sound absorb effect can be increased.
Description
The present invention relates to the urban road laying job practices, this method handle is applicable to big or small road, general, cement concrete in the super expressway etc. is as material, more particularly, the present invention relates to drainage urban road laying job practices, this method can make the water of the road surface that rainwater forms can not infiltrate stable processing layer fully or below the basic unit, make basic foundation keep stable like this, can superficial water be drained fast by the drainage blanket of laying according to certain thickness at position, road top layer simultaneously, not only can not splash, and sound-absorbing effect increases because of vehicle causes water.
Because the shock loading of oversize vehicle acts on repeatedly, generally in road, even for the arbitrary layer in the deck in road cross section, still to conscientiously design or construct, but particularly according to mode of the present invention, carrying out the occasion of making as drainage blanket,, must study water by drainage blanket and not penetrate into scheme in the basic foundation at all from the stable aspect of basic foundation with the link table surface layer.
Therefore, according to the present invention, when adopting the cross section structure layer of existing road with basic unit or stabilized zone according to original mode, at its top layer, successively with cement concrete as using material, form impervious layer and drainage blanket, here drainage blanket not only plays a part the road superficial water of formation such as rainfall is drained apace, and do not have the danger that water splashes thus, vehicle can pass through safely, can play the effect that absorbs noise simultaneously, in addition, impervious layer plays fluid-tight effect in the following manner, and this mode is: the water by drainage blanket can not infiltrate in basic unit or the stabilized zone fully.
So, the rules and regulations relevant with road with urban road laying relevant corresponding conditions, but the present invention also is can be in the condition that satisfies the relevant laws and regulations defined, particularly mainly is conceived to the easiness and the simplicity of constructing, thereby has developed technology of the present invention.
In other words, when being example as occasion with the drainage blanket among the present invention, thereby drain hole is many more, the big more drain function of realizing smoothly of the big more drain function in the aperture of drain hole, but it on the other hand, the relative rules and regulations value of compressive strength or flexural strength significantly reduces and is in fragile state, and purpose of the present invention is to overcome above-mentioned conflicting function just.
On the other hand, even under the situation that all satisfies the rules and regulations condition, if be difficult to construct, then this technology also can be avoided, so the technology of considering according to the easiness of construction or the mode that can construct in a large number can be described as very important techniques factor.
In addition, because drain function is necessary function, thus drain hole can not be blocked by trickle soil particle, molecule etc., even stop up such as temporary transient, but the present invention has the structure that the operation self of not carrying out other penetrates, and this point is indispensable important technology factor.
Therefore, the object of the invention of having considered above-mentioned technical factor is not only to make compressive strength and flexural strength greater than more than the rules and regulations value, make construction easily simultaneously, and can carry out mechanized construction, reduction of erection time, simultaneously the drain hole forming process is easy, and drain hole or draining porosity are also very big, and the discharge rate by drain hole remains on original state substantially, even under situation about temporarily blocking for trickle soil particle, itself still has the effect that penetrates.
Another object of the present invention is to increase the intensity of drainage blanket, particularly increase the surface strength of drainage blanket, make the bonding force between drainage blanket and the impervious layer arrive high value.
Now the problem of the prior art relevant with urban road laying is analyzed.
As the prior art that compares with the present invention, people know pervious concrete and drainage asphalt concrete.All have at pervious concrete and drainage asphalt concrete and can make aspect the permeable hole that water passes through, prior art is identical with the present invention, use the material aspect if observe, pervious concrete is identical with the cement concrete that will mix with aggregate as the present invention who uses material, but different with the present invention on the use material as the composite drainage asphalt concrete of aggregate with pitch.
Just relevant with the above-mentioned item below problem that prior art had is made a concrete analysis of.
At first, when the occasion of pervious concrete is analyzed,
1) owing to is formed with permeable hole, this permeable hole can make superficial water pass through the cross section structure layer (from surface course to roadbed) of road, can produce following shortcoming like this, promptly the danger that basic foundation is destroyed because of percolating water increases, and is not suitable for laying requiring the absolute stable road of ground.
2) owing to pervious concrete is developed as preserving intrinsic phreatic making measure, so only paid attention to the formation of permeable hole, account for more than 20% of whole aggregate amounts (in the 13mm pervious concrete at the molecule that comprises below the #4, the #4 grain amount accounts for 40%) state, even under the situation of increase than the maximum particle diameter of coarse aggregate, small particle still can distribute everywhere, because the aperture of hole is no more than 3mm, thereby the obstruction of the hole that soil or dust etc. cause is inevitably, so problem can take place its pervious function.
3) be because of the former of permeable hole thereby cause the lower position of its intensity with the contacted surface course of vehicle, if but it is not strengthened handling by other measure, then the impact load because of vehicle causes the danger of cracking very big, becomes the problem when urban road laying.
Below the drainage asphalt concrete as prior art is analyzed.
1) the bonding agent drainage asphalt concrete as bonding aggregate has adopted pitch, but because the ratio of the use amount of aggregate and pitch is depended in the formation of drain hole at this moment, has only the use amount to pitch to limit like this.
Use amount at drainage asphalt concrete medium pitch has only about 4～5%.Because as bonding agent, 4～5% pitch amount very little, like this and the bonding force of aggregate can reduce pro rata, thereby can produce following problems, promptly because the repetitive loading of vehicle, just be damaged with the bonding force of aggregate, thereby its stability is damaged greatly.
2) adopted pitch as bonding agent owing to the drainage asphalt concrete, like this in the summer that the temperature rises, the link table surface layer can dissolve deliquescing, soil that this moment is trickle or molecule etc. can be attached in the pitch, one adheres to, and then can not come off, during moving in the manner described above repeatedly, because the danger that drain hole stops up increases, drain function can have problems like this.
3) simultaneously, the drainage asphalt concrete can produce following problems, promptly pitch is softening because of summer, the temperature rises, this moment is under the effect of the repetitive loading of vehicle, can produce sinking with the drain hole in the road position of the contacted direct of travel of wheel, can form darker rut along the vehicle pass-through line, thereby its planeness is damaged.
Obviously the present invention who solves the shortcoming that above-mentioned prior art had with drain function as necessary condition, make compressive strength, flexural strength etc. satisfy the condition of the rules and regulations relevant with road, when needn't worrying that fully drain hole stops up, itself can keep original state substantially, construction is easy in addition, not only carry out mechanized construction in addition easily, and basic foundation is very stable really, thereby can increase the intensity of drainage surface layer greatly, below in the manner described above technical pattern of the present invention be specifically described.
(A) drainage blanket
The objective of the invention is to, (thickness is 3～15cm) to bear the drainage blanket of drain function by drain hole, when its compressive strength, flexural strength satisfied condition in the road management rules, not only drain hole mustn't be closed, and drain hole can keep original state substantially.
In order to realize purpose of the present invention, must satisfy following conditions simultaneously:
(1) forms hole (drain hole);
(2) aperture of porosity, hole and by the distribution in aperture;
(3) granularmetric composition of the aggregate of fully satisfied (2);
Hole is to be determined by the cooperation component of " cement+water+aggregate ", lists the condition of the cooperation component among the present invention below.
A) be in the state of contacted substantially mutual alignment between aggregate and the aggregate;
B) be in the thickness state as the cement paste of aggregate bonding agent according to the mode of the interarea portion of package aggregate;
C) though the hole between the aggregate fill by less aggregate; But,
D) porosity can reach 15～30% degree;
E) aperture of hole and by the degree of distribution in this aperture:
---the aperture of hole surpasses 70% more than 3mm;
---wherein, the aperture of hole more than the 10mm at least more than 10%.
Here in order to satisfy a) simultaneously and b) condition, the slump of mixing the cement mortar form by " aggregate+cement+water " is necessary for 0 or 3cm.
In addition, directly with c), d), e) the relevant item of condition is " granularity of aggregate " because at c), d), e) numerical value of this granularity specifically is provided in the condition, so the granularity of aggregate is definite by above-mentioned numerical value.Yet, even under the situation of the granularity of having determined aggregate, the particle diameter of aggregate is only selected in the scope of the setting of the relevant laws and regulations of condition that satisfies road and road, and the maximum particle diameter of aggregate is 40mm in the present invention, minimum grain size is 5mm, and promptly the particle diameter of aggregate is limited to this scope.
Yet, even under the situation that the mode in the particle size range with aggregate is limited to the scope of 5～40mm is used, with the irrelevant situation of technical scheme of the present invention under, in the processing procedure of aggregate, still have no alternative but to produce the aggregate below the 5mm, this aggregate can be sneaked in the aggregate of its particle diameter in the scope of 5～40mm, even but under such occasion, determine its boundary greater than 90% mode according to the shared weight percent of the aggregate of its particle diameter more than 5mm.
On the other hand, be in state, can in the time can carrying out mechanized construction, be easy to construct in a large number, but the reduction of erection time can make compacting rate remain on more than 95% simultaneously by road roller to its compacting near the slump=0 in cement mortar.
In addition, at d), e) in the condition, the aperture that makes hole is more than 3mm, and accounting for 70% reason is: molecules such as soil or dust can not stop up hole, the aperture that particularly importantly makes hole is accounting at least more than 10% more than the 10mm, in the moment that rainwater passes the hole of diameter more than 10mm, can produce vacuum state, powerful swabbing action can play the function in abutting connection with the hole perforation that makes obstruction.
By carrying out above-mentioned swabbing action repeatedly, can make hole keep original state substantially.But even under the enough big situation of compressive strength or flexural strength, face is formed with drain hole on the top layer of drainage blanket, owing under the impact loading of vehicle, still have the danger that is damaged, and like this must reinforcement top layer face.
The reinforcing agent of this top layer face includes EVA water-soluble epoxy resin or water-soluble propenoic-acids resin and water-soluble pitch, when adopting this reinforcing agent and spilling its shop on the face of the top layer of drainage blanket, then it can permeate fully in the micropore of aperture below 0.5mm, thereby can strengthen the intensity of drainage blanket.Though it is just enough that the enhancing resin is penetrated into the degree of the top layer 5cm in the drainage blanket, if it permeates the whole thickness in drainage blanket, then better.
If be example by the aperture of hole porosity is carried out method for measuring here, it thes contents are as follows.
Being used to measure the above measurement method of porosity method of 3mm comprises the steps: by cutting machine scene or sample to be cut off, adopt pen on this section, to draw straight line, calculate entire length and above-mentioned line and draw the ratio of part, as indirect porosity (A), assay determination is the hole of aperture more than 3mm in the part of not drawing (hole), according to the indirect porosity (B) more than the following formula calculating 3mm.
A (porosity indirectly):
[(entire length-line is drawn the length of part)/entire length] * 100
B (the indirect porosity of aperture more than 3mm):
[length of the hole of aperture more than 3mm/(entire length-line is drawn the length of part)] * 100
(B) impervious layer (basic unit's compacted concrete layer)
As not permeating the impervious layer that the mode in the basic foundation is laid according to water by drainage blanket, in the present invention, be meant the basic unit's compacted concrete layer in the road section deck, its stable contribution to basic foundation is bigger.
(thickness is 5～25cm) can select following aggregate with the compacted concrete layer in basic unit, this aggregate can fully satisfy following condition simultaneously, be a) slump value in the scope of 0～4cm, b) compressive strength, flexural strength satisfy the required value of rules and regulations simultaneously, the granularity of this moment constitutes and to comprise: aggregate big particle diameter in the scope of 5～40mm, the sand of the following smaller particles of 5mm.
After laying, compacting rate is more than 90%.
Here, because slump value in the scope of 0～4cm, not only can directly be carried out the drainage making after compacting, and can pass through the road roller compacting, and carry out mechanized construction easily, also comprise small particle, form the close structure of matter, can be used as good impervious layer.
In addition, if basic unit can then can obtain following advantage with the cross fall of compacted concrete layer in 2～7% scope, promptly not only the draining meeting carried out of drainage blanket is carried out fast, and because the effect of draining fast can increase vacuum state in moment.
(C) strengthen the construction of basic unit with the bonding force of compacted concrete layer and drainage blanket
After basic unit is real with the compacted concrete lamination, can directly lay drainage blanket, it is very fast to construct.But, after basic unit is real with the compacted concrete lamination, if to basic unit with the degree watering of the surface of compacted concrete layer according to certain mire, and carry out the drainage blanket construction, then can greatly increase the integral adhesive power between two-layer.
In the manner described above, the reason that increases bonding force is: because basic unit all is to be in the state of preparing cement paste according to its slump near 0 mode with compacted concrete layer and drainage blanket, cement paste can be brought into play moisture moment hydration energetically like this, can make the above-mentioned two-layer integral body that becomes simultaneously.
On the other hand, after basic unit is real with the compacted concrete lamination, if through about 1 hour, the surface can be dry, but can not obtain aforesaid effect because only sprinkle water this moment, spill following compound in basic unit with compacted concrete layer upper berth, this compound is composite by " water+cement+specific anabolica ", if the laying drainage blanket then can increase the bonding force of interlayer.
At this moment, mix with regard to " water+cement ", in order to increase and decrease the bonding intensity of force of interlayer, the amount of water is minimum, if but adopt seldom water in the manner described above since be not easy with this " water+cement " pave in basic unit with the compacted concrete layer on, owing to can not evenly scatter, because therefore concave-convex surface can add in " water+cement " and adopt the bigger specific anabolica of cement dispersion effect everywhere, makes it to realize at an easy rate evenly paving.
In addition,, go into cement paste, realize that anchorage effect also is a reason that increases bonding force in the drain hole interpolation of drainage blanket in above-mentioned occasion.
Below just according to above-mentioned primary structure, constitute proportioning and the construction sequence of basic unit with compacted concrete layer and drainage blanket, enumerate concrete numerical value.
(1) basic unit's proportioning and laying step of compacted concrete
Basic unit of the present invention with the formation component proportioning of compacted concrete is
Water: 80～140kg/m
3, cement: 250～400kg/m
3, the aggregate of particle diameter in 5～40mm scope: 950～1550kg/m
3, as the sand of the smaller particles of particle diameter below 5mm: 470～1000kg/m
3, cement water reducing agent: 2.0kg/m
3Below, the slump of this mixed liquor is in the scope of 0～4cm.
Need the situation of about 30 days time to compare with general concrete maintenance, because the slump of composite compacted concrete is in the scope of 0～4cm in the manner described above, can after compacting, carry out the water permeability making immediately, like this can be in the independent time that need not maintenance, reduction of erection time significantly.
After the basic unit of laying above-mentioned material through mixing is with compacted concrete, make this lamination reality in the mode 90% or more by road roller etc. according to compacting rate, compacted depth is in the scope of 5～25cm.Basic unit uses desired compressive strength of compacted concrete and flexural strength respectively at 180kg/m
2More than, 28kg/m
2More than, but to use in the compacting step in basic unit of the present invention, compressive strength is at 240kg/m
2More than, flexural strength is at 40k2/m
2More than, all surpassed above-mentioned benchmark.At this moment, if just compacting rate enough more than 90%, but preferably this compacting rate more than 95%.
(2) strengthen the construction of basic unit with the bonding force of compacted concrete layer and drainage blanket
On the surface of basic unit with the compacted concrete layer, at first considerable moisture occasion (substantially in after the compacting 60 minutes) arranged residual, sprinkle water in this shop, surface according to per 1 square metre of amount below the 1kg, in the occasion of this surface substantially dry (when surpassing after basic compacting 60 minutes), following mixed liquor is spilt in amount shop according to per 1 square metre of 0.1～1kg, this mixed liquor is 0.1～0.5 part of weight of mixed cement in the water of 1 part of weight, form below 0.005 part of weight of specific anabolica, excite and induce the hydration that is in the cement paste under the non-admixture, can strengthen the bonding force between basic unit's usefulness compacted concrete layer and the drainage blanket thus.
(3) proportioning of drainage layer of concrete and laying step
After basic unit is sprinkled water with the compacted concrete layer, in about 60 minutes, lay the drainage layer of concrete at its top.At aggregate maximum unit volume weight benchmark 1m
3In, with cement: 300～450kg/m
3, the unit water yield: 90～140kg/m
3, and cement water reducing agent: 2.0kg/m
3Below, be used for painted inanimate matter pigment: below 10% of cement operating weight, mix: account for mixing below 20% of cement use amount with more than polymer and low aqueous solubility allyl resin, EVA, water-soluble epoxy resin, SBR latex or oiling pitch at least a, make its slump in the scope of 0～5cm, after it has been laid, according to maximum degree of compaction more than 90%, the mode that is preferably in more than 96% makes its compacting, makes its thickness in the scope of 3～15cm.
Generally, use desired compressive strength of layer of concrete and flexural strength respectively at 180kg/m as road
2More than, 28kg/m
2More than, still, in the present invention, the compressive strength of drainage layer of concrete and flexural strength are respectively substantially at 240kg/m
2More than, 40kg/m
2More than, all above said reference.
In above-mentioned steps, why the cement use amount is limited to 300～450kg/m
3Scope in be because: at it at 450kg/m
3Above occasion when carrying out compacting by road roller, sponginess can occur, at it at 300kg/m
3Following occasion, under the state that is fit to porosity, compressive strength can not reach 180kg/m
3, can not play the effect of urban road laying material.
At this moment, as the aggregate that is adopted is following aggregate, be that its adiabatic drying proportion is more than 2.5, rate of wear in Los Angeles formula building stones abrasion test method is below 30%, in its granularity than maximum size of coarse aggregate below 40mm, according to the test benchmark of the padding and compacting of obstruction, its porosity is in 35～55% scope, so that the breakage of the aggregate on surface can prevent vehicle pass-through the time.
The reason that in the padding and compacting of obstruction test benchmark the porosity of aggregate is limited in 35～55% the scope is: in the porosity of aggregate in the occasion below 35%, after laying polymer, in the drainage concrete, its porosity below 15% and coefficient of permeability 10
-1Below the cm/sec, the porosity of this external aggregate is in the occasion more than 55%, although use a large amount of cement, not only the concrete intensity of drainage is lower, and can be because of the more sponginess that produces of the use amount of cement, thereby is difficult to carry out making.
In addition, in this step, the rate of wear that limits in its Los Angeles formula building stones abrasion test method in the reason of the aggregate below 30% is: in the occasion that adopts its rate of wear at the aggregate more than 30%, when rubbing with wheel, the aggregate of road surface breaks easily, can drainage be reduced in addition, thereby shorten the life-span of road.
(4) be used to improve the step of drainage layer of concrete intensity and durability
In order to prevent the corrosion of drainage layer of concrete hole, improve intensity and durability, following mixed liquor fully paves on the surface of drainage layer of concrete, this mixed liquor is in the water of 1 part of weight, cement, or gypsum: 1～0.2 part of weight, specific anabolica: 0.005 part below the weight, inanimate matter pigment: 0.005～0.05 part of weight, the EVA water-soluble epoxy resin, or water-soluble acrylic acid is a resin: 0.15 part below the weight, methyl alcohol: 1 part of weight is following mixes and forms, and this mixed liquor will rise to basic unit with compacted concrete layer place.Preferably drainage pore fluid of concrete rate is about 18% before this mixed liquor spills from the shop, become pave after about 15%.After spilt this mixed liquor shop, the maintenance cloth that materials such as covering ethene are made was about more than 1 day, divides evaporation to prevent water, makes its compacting.
Be preferably in 3 hours after the compacting of drainage concrete, or spilling this mixed liquor through shop, back more than 1 day, its reason is: be to begin to carry out behind 3 hours after the compacting owing to solidify, reduce the concrete durability of drainage so carry out the operation meeting at the making face, in addition owing to be in the state that has carried out 1 maintenance in 1 day later on, even carry out under the situation of operation at the drainage TOC like this, still it doesn't matter.
As the intensity that improves the drainage layer of concrete and the measure of durability, spill except that the shop and to state the mixed liquor, can also be after the compacting of drainage layer of concrete, under the state before its dry tack free, sprinkle water on the surface of drainage layer of concrete by powerful ejector, clean out the cement paste that is filled in the aggregate surface, the cement paste that is cleaned out is infiltrated between the hole, thereby increase the adhesive strength between the hole.But, according to the method described above, strengthening the concrete occasion of drainage, because the aggregate on surface is outstanding, though have the advantage that can produce natural beauty, owing to exist the aggregate on surface to break away from or the broken higher shortcoming of possibility, therefore, this method is compared with being used for the current frequent road of oversize vehicle, is more suitable for being used for only having places such as current road of dilly or square.
Fig. 1 is the explanation sectional drawing of the principle of general water permeability making;
Fig. 2 is the explanation sectional drawing of the principle of drainage concrete making;
Fig. 3 is the sectional drawing of the general super expressway built by usual way;
Fig. 4 is the sectional drawing according to the drainage making road of making of the present invention.
Present invention is described according to embodiment below.
(embodiment)
With such road is object, and this road is to be formed with basic unit, auxiliary basic unit, lean concrete according to usual way, and its length is that 50m, width are that the width of the curb of 9m, both sides is 3m; Form basic unit by compacted concrete, lay the drainage concrete thereon.At this moment, basic unit is 20cm with the compacted concrete laying depth, at its top laying depth drainage concrete that is 10cm, the general laying depth of by-pass is the concrete of 5cm, laying depth is the drainage concrete of 10cm afterwards, and its color is a light green color, on the side on border ported sub is set.Outfit is used for the following equipment and the material of present embodiment.
(equipment: 2 of the finishing machines (width is 4.5cm) of bituminous concrete laying usefulness, 6～8 tons 1 of double-row type road roller, 10～12 tons 1 of rubber-tyred roller, 1 of ready mix concrete equipment, 1 of tipping lorry, other bituminous concrete laying equipment)
Compacted concrete that uses in the present embodiment and drainage concrete proportioning
(in the superincumbent table, W/C represents water, cement ratio, and S/A represents the ratio that less aggregate is shared)
| ?W/C | ??S/A | Compounding ingredient is formed (kg/m 3) | Unit Weight (the kg/m of compounding ingredient 3) | ||||||
| Water | Cement | Sand | 5～19mm aggregate | 5～25mm aggregate | Postpone material | ||||
| Basic unit's compacted concrete | ?32.4 | ??28 | ?110 | ?340 | ?569 | ???- | ????1.492 | ??0.85 | ??????2.511 |
| The drainage pervious concrete | ?30.9 | ??0 | ?116 | ?375 | ?- | ???1.550 | ????- | ??0.94 | ??????2.042 |
Adopt above-mentioned material, carry out following step.
The 1st step: according to usual way, pattern (will more than 30cm) is set at the top of the auxiliary basic unit that lay not to form, basic unit, lean concrete, adopt finishing machine, according to its cross fall is 3%, the mode that its making thickness is 20cm under the situation of considering compacting rate is laid from a side with compacted concrete basic unit, by the double-row type road roller it is carried out compacting simultaneously, but will carry out compacting in the mode more than 96% to it according to its optimal density.
The 2nd step: after compacting through more than 60 minutes the time, in the water of 1 part of weight, 0.3 part of weight of concrete, 0.003 part of weight of specific anabolica are mixed, amount according to per 1 square metre of 0.3kg is spilt this mixed liquor shop on basic unit usefulness compacted concrete surface, removes basic unit and uses remaining surface pore in the compacted concrete.
The 3rd step: after spill the mixed liquor shop of above-mentioned steps, and then lay the drainage concrete with finishing machine, by double-row type road roller and rubber-tyred roller it is carried out compacting in the mode more than 96% according to its maximum compacted density by asphalt paving.
The 4th step: as intensity, and the reinforcing agent of durability, make following mixed liquor, this mixed liquor is 0.2 part of weight of cement and 0.002 part of weight of specific anabolica in the water of 1 part of weight, 0.02 part of weight of viridine green, and 0.002 part of weight mixing of water-soluble epoxy resin formation, amount according to per 1 square metre of 4.2kg spills this mixed liquor shop in the concrete surface of drainage, after this mixed liquor absorbs in basic unit's usefulness compacted concrete layer, about 1 day time of maintenance cloth that materials such as covering ethene are made, under the situation that does not make water evaporates, mixed liquor is solidified.Before this mixed liquor was spilt in the shop, the drainage pore fluid of concrete rate that remains on more than 18% became 15% after spill the shop.
The 5th step: according to usual way, carry out compacting watering for several times, after through 2 days, sling, sling agent are set,, can make vehicle pass-through through just very firm after 28 days.
For the by-pass of side, also lay according to the 1st above-mentioned step, the 2nd step, the 3rd step, the 4th step, the such order of the 5th step.
After the road construction of the foregoing description finished, after characteristics such as porosity, compressive strength, water permeability, compacting rate, bonding force were tested, the results are shown in Table 1 with it.
Table 1
(compressive strength of table 1, and the intensity after spill the agent shop is spilt in flexural strength presentation surface shop)
| Porosity (%) | Compressive strength (kg/ cm 2) | Flexural strength (kg/ cm 2) | Water permeability (cm/sec) | Compacting rate (%) | Color | Bonding force | Indirect porosity | |
| Basic unit's compacted concrete | 4％ | 334 | 49.2 | - | 98 | - | When adopting bobbin (コ ア) back to impact, bonding position is regardless of from, other position breakage | Above 35% 10mm above 27% of 3mm |
| The drainage concrete | 19.4％ | 327 | 48.9 | 4.2×10 | 96.4 | Light green color | ||
| Standard (desired value) | Drainage is more than 15 | More than 270 | More than 45 | More than 10 | More than 90 | The limit sample | After adopting bobbin, during impact bonding position be regardless of from | Pore diameter accounts for 70% more than 3mm, account for more than 10% more than the 10mm |
| Test method | KSF | KSF 2505 | KSF 2506 | On-the-spot permeability test | KSF 2312 | Naked eyes | Naked eyes | Chi |
Shown in chart 1, embodiments of the invention keep good intensity and water permeability, and bonding very firm between compacted concrete layer and the drainage layer of concrete has favorable durability in addition.Like this, with regard to the present invention, after compacted concrete is laid, owing to need not to prolong the construction period that is used for compacting, the effect of can obtain the reduction of erection time like this, saving operating expenses.
The present invention relates to such making job practices, promptly not only compressive strength can maintain more than the setting of the relevant rules of road with flexural strength greatly, be easy to construct, and can carry out mechanized construction, reduction of erection time, the drain hole forming process is easy simultaneously, the aperture of drain hole or draining porosity are also very big, discharge rate by drain hole can remain on original state substantially, even temporarily the soil owing to fine particle stops up, itself still can realize connecting, the surface strength of this outer drainage layer is bigger, durability for the impact load of vehicle is bigger, drainage blanket and basic unit are integral bonding with the compacted concrete layer, sound-absorbing effect is bigger, and the degree of stability of ground is higher.
Claims (11)
1. drainage concrete making job practices, it comprises following operation:
In road cross-sectional configuration layer,
A) lay basic unit's compacted concrete layer at the top of basic unit or lean concrete layer, this basic unit is composite by " aggregate+cement+water " with the compacted concrete layer, its slump (Slump) is in the scope of 0～4cm, the granularity of aggregate is to form like this, the particle diameter of aggregate and contains the following sand of the little 5mm of particle in the scope of 5～40mm;
B) lay drainage blanket in basic unit with compacted concrete layer top, this drainage blanket constitutes in the following manner, it is composite by " aggregate+cement+water ", its slump is in the scope of 0～3cm, the granularity of above-mentioned aggregate is to form like this, its porosity is in 15～30% scope, wherein the above aperture of 3mm accounts for 70%, and the above aperture of 10mm accounts for more than 10% at least, simultaneously the particle diameter of aggregate is in the scope of 5～40mm, wherein particle diameter at the percentage by weight of the aggregate more than the 5mm more than 90%.
2. drainage concrete making job practices according to claim 1 is characterized in that, above-mentioned drainage blanket and basic unit with the compacted concrete layer in, the granularity of aggregate is to be that 0 mode constitutes according to the slump.
3. drainage concrete making job practices according to claim 1 and 2 is characterized in that, lay basic unit with the compacted concrete layer after, 1 hour with interior watering, lay drainage blanket thereon.
4. drainage concrete making job practices according to claim 1 and 2, it is characterized in that, after laying basic unit is with the compacted concrete layer, in occasion through 1 hour, lay the compound of " water+cement+specific anabolica ", lay drainage blanket thereon.
5. drainage concrete making job practices according to claim 1 and 2 is characterized in that, makes water-soluble epoxy resin or water-soluble propenoic-acids resin permeate top layer in drainage blanket, to increase the intensity of drainage blanket.
6. drainage concrete making job practices according to claim 1 and 2 is characterized in that, uses in the compacted concrete layer in basic unit, and making cross fall towards two sides from road central authorities is 2～7%.
7. drainage concrete laying construction method, it comprises following operation:
In road cross-sectional configuration layer,
A) with water: 80～140kg/m
3, cement: 250～400kg/m
3, particle diameter is the aggregate of 5～40mm: 950～1550kg/m
3, the sand of particle diameter below 5mm: 470～1000kg/m
3, cement water reducing agent: 20kg/m
3Below, mix according to the mode of the slump in the scope of 0～4cm, and be layed in after the top of basic unit or lean concrete layer, according to the mode that maximal density accounts for more than 90% above-mentioned layer is carried out compacting, form basic unit's compacted concrete layer;
(b) after the usefulness of the basic unit in the above-mentioned operation compacted concrete lamination reality, before its dry tack free, or in about 1 hour, sprinkle water on its surface with per 1 square metre of amount below the 1kg;
(c) after the watering of above-mentioned operation, in about 1 hour, at aggregate maximum unit weight by volume benchmark 1m
2Middle cement: 300～450kg/m
2, water: 90～140kg/m
2, cement water reducing agent: 2.0kg/m
2Below mix according to the mode of the slump in the scope of 0～3cm, after laying, in the mode more than 95% above-mentioned compound is carried out compacting, formation drainage layer of concrete according to maximal density;
(d) on the surface of the drainage layer of concrete of above-mentioned operation, fully spread with the mode on the compacted concrete layer and spill following mixed liquor according to arriving basic unit, this mixed liquor be in the water of 1 part of weight cement or gypsum: 1～0.2 part of weight, specific anabolica: 0.005 part below the weight, EVA water-soluble epoxy resin or water-soluble propenoic-acids resin: 0.15 part is mixed below the weight and forms, thereby can strengthen the intensity and the durability of drainage layer of concrete.
8. drainage concrete making job practices according to claim 7, it is characterized in that, it comprises following operation: in order to strengthen basic unit's compacted concrete layer, bonding force with top drainage layer of concrete, after basic unit is real with the compacted concrete lamination, occasion in dry tack free, or in about 1 hour occasion of process, according to spilling following mixed liquor with the amount of 1 square metre of 0.1～1kg shop on its surface, this mixed liquor is 0.1～0.5 part of weight of cement in the water of 1 part of weight, the following mixing of 0.005 part of weight of specific anabolica forms, and removes basic unit and uses remaining surface pore in the compacted concrete layer.
9. according to claim 7 or 8 described drainage concrete making job practicess, it is characterized in that, in drainage concrete component, the maximum particle diameter that adopts thicker aggregate below the 40mm and the rate of wear of aggregate at the aggregate below 30%, the porosity of aggregate is in 35～55% scope.
10. according to claim 7 or 8 described drainage concrete making job practicess, it is characterized in that,, in the water of 1 part of weight, mix the methyl alcohol of 0.1～1 part of weight in order to increase painted effect and dispersing of pigments effect.
11. according to claim 7 or 8 described drainage concrete making job practicess, it is characterized in that, behind drainage concrete making, in order to improve intensity, to reach durability, the substitute mode of spilling reinforcing agent as the shop, after forming the drainage concrete, under undried state,, clean out the cement that is attached on the aggregate surface by powerful ejector watering, it is infiltrated between the hole, thereby improve concrete intensity of drainage and durability.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970003449A KR970027525A (en) | 1996-10-17 | 1997-02-05 | Drainage concrete paving method |
| KR3449/97 | 1997-02-05 | ||
| KR3449/1997 | 1997-02-05 | ||
| KR1019970008822A KR100203991B1 (en) | 1996-10-17 | 1997-03-15 | Method for paving water draining road with pervious cement concrete |
| KR8822/1997 | 1997-03-15 | ||
| KR8822/97 | 1997-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1196422A true CN1196422A (en) | 1998-10-21 |
| CN1202312C CN1202312C (en) | 2005-05-18 |
Family
ID=26632506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981070981A Expired - Fee Related CN1202312C (en) | 1997-02-05 | 1998-02-05 | Method for paving water-permeable road with cement concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1202312C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340720C (en) * | 2003-01-29 | 2007-10-03 | 中国航空港建设第二工程总队 | Construction method for large scale high-performance cement concrete road panel |
| CN102322010A (en) * | 2011-07-14 | 2012-01-18 | 华南理工大学 | Road surface porous resin seal layer and construction method thereof |
| CN105714639A (en) * | 2016-03-15 | 2016-06-29 | 王壹帆 | Asphalt concrete pavement adopting rubbles with particle size equal to pavement thickness and construction method thereof |
| CN106400641A (en) * | 2016-10-19 | 2017-02-15 | 山西省交通科学研究院 | Paving material and environment-friendly easy-drainage porous pavement structure prepared through paving material |
| CN108842561A (en) * | 2018-06-22 | 2018-11-20 | 宁夏荣光电力工程有限公司 | A kind of construction method of anticracking drainage road |
-
1998
- 1998-02-05 CN CNB981070981A patent/CN1202312C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340720C (en) * | 2003-01-29 | 2007-10-03 | 中国航空港建设第二工程总队 | Construction method for large scale high-performance cement concrete road panel |
| CN102322010A (en) * | 2011-07-14 | 2012-01-18 | 华南理工大学 | Road surface porous resin seal layer and construction method thereof |
| CN105714639A (en) * | 2016-03-15 | 2016-06-29 | 王壹帆 | Asphalt concrete pavement adopting rubbles with particle size equal to pavement thickness and construction method thereof |
| CN106400641A (en) * | 2016-10-19 | 2017-02-15 | 山西省交通科学研究院 | Paving material and environment-friendly easy-drainage porous pavement structure prepared through paving material |
| CN106400641B (en) * | 2016-10-19 | 2019-02-01 | 山西省交通科学研究院 | A kind of environmental protection of pavement material and its preparation easily dewatering type permeable pavement structure |
| CN108842561A (en) * | 2018-06-22 | 2018-11-20 | 宁夏荣光电力工程有限公司 | A kind of construction method of anticracking drainage road |
| CN108842561B (en) * | 2018-06-22 | 2020-05-12 | 宁夏荣光电力工程有限公司 | Construction method of anti-cracking drainage road |
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| Publication number | Publication date |
|---|---|
| CN1202312C (en) | 2005-05-18 |
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