CN105829612A - Slope reinforcing method using high-performance shotcrete - Google Patents
Slope reinforcing method using high-performance shotcrete Download PDFInfo
- Publication number
- CN105829612A CN105829612A CN201480069796.4A CN201480069796A CN105829612A CN 105829612 A CN105829612 A CN 105829612A CN 201480069796 A CN201480069796 A CN 201480069796A CN 105829612 A CN105829612 A CN 105829612A
- Authority
- CN
- China
- Prior art keywords
- concrete
- mentioned
- mixing
- side slope
- strengthening part
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000011378 shotcrete Substances 0.000 title abstract description 38
- 230000003014 reinforcing effect Effects 0.000 title abstract description 5
- 239000004567 concrete Substances 0.000 claims abstract description 171
- 238000002156 mixing Methods 0.000 claims abstract description 83
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 20
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 239000006229 carbon black Substances 0.000 claims abstract description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract 4
- 238000002347 injection Methods 0.000 claims description 53
- 239000007924 injection Substances 0.000 claims description 53
- 239000007921 spray Substances 0.000 claims description 38
- 238000005728 strengthening Methods 0.000 claims description 30
- 239000004574 high-performance concrete Substances 0.000 claims description 23
- 235000013312 flour Nutrition 0.000 claims description 21
- 239000004568 cement Substances 0.000 claims description 19
- 239000000549 coloured material Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000012615 aggregate Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 12
- 239000000843 powder Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004040 coloring Methods 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 2
- 239000002344 surface layer Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 13
- 238000005507 spraying Methods 0.000 description 12
- 239000010883 coal ash Substances 0.000 description 9
- 238000012407 engineering method Methods 0.000 description 9
- 239000011812 mixed powder Substances 0.000 description 8
- 238000004544 sputter deposition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000011381 foam concrete Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001466460 Alveolata Species 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/066—Precipitated or pyrogenic silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
- C04B14/106—Kaolin
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/40—Miscellaneous comprising stabilising elements
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The present invention relates to an assembly-type slope reinforcing method using a high-performance shotcrete and a reinforcing member, the method, after producing, at a batch plant, and transporting normal concrete having a compressive strength of 21-30 MPa to a construction site: forms normal-strength shotcrete by mixing either fly ash or slag fine powder or low-grade mixed material in which fly ash or slag fine powder is mixed, in an increased fluidity state by mixing 20-40% of bubbles of the total volume; forms high-performance shotcrete by mixing either silica fumes or metakaolin or high-grade mixed material in which either silica fumes or metakaolin are mixed; and forms color shotcrete by mixing a coloring material such as an iron oxide or carbon black, so as to sequentially construct an inner layer section, an outer layer section, and a surface layer section on the slope, thereby reducing construction costs and obtaining high strength and high durability so as to facilitate maintenance.
Description
Technical field
nullThe present invention relates to side slope and add strong method，In more detail，The combination type side slope relating to utilizing as follows high property spray concrete and strengthening part adds strong method，I.e.，Normal concrete that compressive strength is 21～30MPa can be produced and after job site is transferred in concrete batch plant，When relative to volume be mixed into 20～40% bubble to increase mobility，Form regular tenacity gunite concrete respectively、High property spray concrete、Colored gunite concrete，I.e.，It is mixed into and is formed by a kind of in flyash or slag micropowder or the rudimentary mixing material of mixed powder coal ash or slag micropowder is to form regular tenacity gunite concrete，It is mixed into and is formed or mix the senior mixing material of silica flour and metakaolin to form high property spray concrete by a kind of in silica flour and metakaolin，The coloured material being mixed into ferrum oxide or white carbon black etc. forms colored gunite concrete，Thus can form internal layer portion in side slope the most successively construction、Outer layer portion and skin section，Thus by reducing operating expenses and can guarantee that high intensity and high-durability make maintenance become simple.
Background technology
Generally, gunite concrete is to utilize pressure-air to object structure thing gunite concrete and to make concrete setting in the engineering method of object structure, mainly use wet sprayed concrete, but, above-mentioned engineering method be mixing cement, after aggregate, water etc. by pump or compressed air carry moist mixing material by nozzle injection mixing material by the way of, thus mould need not be set, it is effectively applicable to the most inapproachable domatic etc..
Above-mentioned gunite concrete is divided into material age is 28 and compressive strength is more than 21MPa regular tenacity gunite concrete and material age to be 28 and compressive strength is the high strength spray concrete of more than 35MPa, above-mentioned high strength spray concrete has high-durability, therefore, it is also generally referred to as high property spray concrete.
In Korea S, generally use regular tenacity gunite concrete, owing to intensity and the durability of regular tenacity gunite concrete are low, thus there is problem that can be damaged in early days.
Table 1 is Road Corporation, Korea to nearly 333 the domatic data adjusting after the recovery to deliver through construction of shotcrete on Korea S's highway comprehensively, occurs that the domatic of subnormal quality such as be full of cracks and air slaking are 17.4%, i.e. about 58.Survey result, domatic be full of cracks reaches 53%, air slaking reach 89%, aggregate reaches 74%.
Table 1 gunite concrete quality survey present situation (Road Corporation, Korea's research report, 2011)
On the other hand; for the purpose of the protection and reinforcement of side slope; there is slope protection engineering method and side slope strengthens engineering method; it is to domatic guarantee that safety coefficient adjusts the domatic gradient and slows down by blocking that above-mentioned side slope strengthens engineering method, or utilizes gunite concrete hole, protection porthole, stake holes, the engineering method of fixing hole resistance.
Generally, above-mentioned engineering method selects by considering domatic purposes, soil property and rock behavio(u)r, foundation condition, maintenance condition, view etc., but, the most only focus on functional, and ignore view, thus a lot of situation damaging surrounding landscape occurs.
And in order to pay attention to above-mentioned view, make in the side slope as existing structure and artificial rock is set, but, artificial rock need to construct by being additionally attached to the outside of side slope, the support member being connected and supporting artificial rock with artificial rock must be set in the inside of side slope, in the medial part adhesive stripe-coating of artificial rock, and use priming paint to form Artificial Rock slabstone, but this does not have structural behaviour.
And, epoxy material or polymer are mainly used as mainly in combination with material by artificial rock, therefore, when artificial rock is exposed to ultraviolet, the fragility of artificial rock becomes strong, causes durability to be decreased obviously, is therefore generally of the service life of 3～4 years, so that periodically safeguard, there is the problem being difficult to carry out safeguarding.
[prior art literature]
Korean granted patent the 10-1157874th
Summary of the invention
Technical problem
nullTo this，The present invention is used for solving prior art problem as above，One purpose of the present invention is，Thering is provided utilizes the combination type side slope of high property spray concrete and strengthening part to add strong method as follows，I.e.，Normal concrete that compressive strength is 21～30MPa can be produced and after job site is transferred in concrete batch plant，When relative to volume be mixed into 20～40% bubble to increase mobility，Form regular tenacity gunite concrete respectively、High property spray concrete、Colored gunite concrete，I.e.，It is mixed into and is formed by a kind of in flyash and slag micropowder or the rudimentary mixing material of mixed powder coal ash and slag micropowder is to form regular tenacity gunite concrete，It is mixed into and is formed or mix the senior mixing material of silica flour and metakaolin to form high property spray concrete by a kind of in silica flour and metakaolin，The coloured material being mixed into ferrum oxide or white carbon black etc. forms colored gunite concrete，Thus can form internal layer portion in side slope the most successively construction、Outer layer portion and skin section，Thus operating expenses can be reduced.
And, another object of the present invention is, thering is provided utilizes the combination type side slope of high property spray concrete and strengthening part to add strong method as follows, i.e., it is mixed into by use and is formed by a kind of in flyash and slag micropowder or the common gunite concrete of rudimentary mixing material of mixed powder coal ash and slag micropowder forms the simplicity in terms of the internal layer portion of protection wall provides economy and construction, outer layer portion is mixed into by cast and is guaranteed high intensity and high-durability by the high property spray concrete of a kind of senior mixing material forming or mixing silica flour and metakaolin in silica flour and metakaolin, skin section presents beautiful and natural shape by the colored gunite concrete of cast, thus present the view of beauty and be easy to safeguard.
And, another object of the present invention is to, thering is provided utilizes the combination type side slope of high property spray concrete and strengthening part to add strong method as follows, i.e., make to form integration in order to the anchoring arranged by strengthening side slope and guaranteeing stability is poured into a mould by high property spray concrete, thus can ensure that structural stability and economy.
Technical scheme
The combination type side slope utilizing high property spray concrete and strengthening part of the present invention adds strong method, it is characterised in that including: before forming internal layer portion, make the step of stability of slope by strengthening part；Mixing water, cement and aggregate produce the normal concrete that compressive strength is 21～30MPa the step transferred to job site to scale；The regular tenacity concrete mixing above-mentioned normal concrete, bubble and rudimentary mixing material by mixing unit is discharged to side slope by injection guide member, forms the thickness step more than the internal layer portion in outer layer portion；The high performance concrete mixing above-mentioned normal concrete, bubble and senior mixing material by mixing unit is discharged by the upper side in injection guide member inner layer portion, forms the thickness step less than the outer layer portion in internal layer portion；The color concrete mixing above-mentioned normal concrete, bubble and coloured material by mixing unit is discharged by the upper side in injection guide member outer layers portion, forms the step of skin section；And when discharging each concrete by above-mentioned injection guide member, spray the pressure-air of more than 5 air pressure, make the bubble in each concrete eliminate and reduce the step of the slump.
Beneficial effect
nullAccording to the present invention，The present invention can have the advantage that，I.e.，Normal concrete that compressive strength is 21～30MPa can be produced and after job site is transferred in concrete batch plant，When relative to volume be mixed into 20～40% bubble to increase mobility，Form regular tenacity gunite concrete respectively、High property spray concrete、Colored gunite concrete，I.e.，It is mixed into and is formed by a kind of in flyash and slag micropowder or the rudimentary mixing material of mixed powder coal ash and slag micropowder is to form regular tenacity gunite concrete，It is mixed into and is formed or mix the senior mixing material of silica flour and metakaolin to form high property spray concrete by a kind of in silica flour and metakaolin，The coloured material being mixed into ferrum oxide or white carbon black etc. forms colored gunite concrete，Thus can form internal layer portion in side slope the most successively construction、Outer layer portion and skin section，Compared with when side slope being constructed with high strength spray concrete，Operating expenses can be reduced further，Thus economy can be improved.
And, according to the present invention, the present invention can have the advantage that, i.e., it is mixed into by use and is formed by a kind of in flyash and slag micropowder or the common gunite concrete of rudimentary mixing material of mixed powder coal ash and slag micropowder forms the simplicity in terms of the internal layer portion of protection wall provides economy and construction, outer layer portion is mixed into by cast and is guaranteed high intensity and high-durability by the high property spray concrete of a kind of senior mixing material forming or mixing silica flour and metakaolin in silica flour and metakaolin, skin section presents beautiful and natural shape by the colored gunite concrete of cast, thus present the view of beauty and be easy to safeguard.
Further, according to the present invention, the present invention can have the advantage that, i.e. makes to form integration in order to the anchoring arranged by strengthening side slope and guaranteeing stability is poured into a mould by high property spray concrete, thus can ensure that structural stability and economy.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention.
Fig. 2 is the figure of the stability of slope making the present invention.
Fig. 3 is the figure being formed normal concrete by the present invention.
Fig. 4 is the figure of the bubble illustrating the present invention.
Fig. 5 to Fig. 6 is the figure of the mixing unit illustrating the present invention.
Fig. 7 to Figure 12 is the slump photo of the normal concrete of the present invention, high performance concrete and gunite concrete.
Figure 13 to Figure 15 is the injection flow chart of the present invention.
Figure 16 is the figure illustrating the admixture mixing coloured material in the present invention.
Figure 17 to Figure 18 is the figure being shown through the state that the present invention makes side slope be strengthened.
Symbol description
10: concrete batch plant (batcherplant) 20: strengthening part
30: fixture 40: concrete mixing and transporting car
50: pump truck 60: mixing unit
70: injection guide member 100: side slope
200: internal layer portion 300: outer layer portion
400: skin section
Detailed description of the invention
Hereinafter, referring to the drawings, the present invention is described in detail.Fig. 1 is the flow chart of the present invention.
The combination type side slope utilizing high property spray concrete and strengthening part of the present invention adds strong method and includes: before forming internal layer portion 200, make the step of side slope 100 stabilisation by strengthening part 20；Mixing water, cement and aggregate produce the normal concrete that compressive strength is 21～30MPa the step transferred to job site to scale；The regular tenacity concrete mixing above-mentioned normal concrete, bubble and rudimentary mixing material by mixing unit 60 is discharged to side slope 100 by injection guide member 70, forms the thickness step more than the internal layer portion 200 in outer layer portion 300；The high performance concrete mixing above-mentioned normal concrete, bubble and senior mixing material by mixing unit 60 is discharged by the upper side in injection guide member 70 inner layer portion 200, forms the thickness step less than the outer layer portion 300 in internal layer portion 200；The color concrete mixing above-mentioned normal concrete, bubble and coloured material by mixing unit 60 is discharged by the upper side in injection guide member 70 outer layers portion 300, forms the step of skin section 400；And when discharging each concrete by above-mentioned injection guide portion 70, spray the pressure-air of more than 5 air pressure, make the bubble in each concrete eliminate and reduce the step of the slump.
Then, the work progress with the present invention of structure as above is described.
First, as shown in Figure 2, state in view of side slope 100, by strengthening part 20, side slope 100 is strengthened, in the way of the above-mentioned strengthening part 20 of collecting improves tack and cohesiveness, reinforcing bar and wire screen are set in side slope 100, preferably, above-mentioned strengthening part 20 is a kind in earth anchor, plate brad supporting and anchor pole.
Above-mentioned earth anchor (EarthAnchor) is such as lower component, i.e., in order to be attached with the steel of high intensity at ground fixed structure thing and apply lateral confinement power by importing high-tension to works, above-mentioned earth anchor presents and ground and works is bundled into the effect as an aggregation, and above-mentioned earth anchor is made up of steel wire, cement and grout.
Above-mentioned plate brad supporting (SoilNailing) is following engineering method, i.e., by the reinforcement engineering method to excavation surface, do not have prestressed in the case of, opposing can be referred to as the strengthening part 20 of the tensile stress of Nail, shear stress and bending moment after narrow interval insertion, pliable and tough front panel is set and suppresses the block shear of original place base and the generation of displacement as far as possible, and during suppressing excavation and excavation terminate after intended lax.
Above-mentioned anchor pole (RockBolt) is used for maintaining the original intensity of rock, the Main Function of above-mentioned anchor pole is as follows, that is, suppression remains in the rock exposed surface of intercepting and likely causes the displacement of Pumex of whereabouts or movement, and prevent from occurring because of the be full of cracks of rock and texture is mobile etc..
And, as shown in Figure 3, so that can to form compressive strength be 21～30MPa, the slump by the normal concrete of 60～80mm in the way of after ratio mixing and mixing are supplied according to the rules in concrete batch plant 10 water, cement, aggregate etc., transfer to job site by concrete mixing and transporting car 40.
Wherein, for the intensity of final gunite concrete, water cement ratio is less than 42%, after cast gunite concrete, does not adjusts the slump according to water cement ratio to prevent concrete landing, and uses water reducer or AE agent to adjust the slump.
As shown in Figure 4, if above-mentioned concrete mixing and transporting car 40 is reached the spot, then the normal concrete owing to putting into concrete mixing and transporting car 40 causes suction variation because of the loss of additional generation during transfer, cause and be difficult to suction, therefore put into from bubble produced by foaming agent, blowing agent or bubble generator to above-mentioned concrete mixing and transporting car 40.
Now, preferably, the bubbles volume put into above-mentioned concrete mixing and transporting car 40 is as follows, i.e. be mixed into the bubble of produced 240l during making bubble generator run about 60 seconds in order to be mixed into the bubble reaching 30% relative to volume to normal concrete to the normal concrete of 1m3.As shown in Figure 5 to Figure 6, to above-mentioned normal concrete add relative to monolithic concrete volume reach 20～about 40% bubble form the ball bearing effect by bubble and the axle 61 being installed on mixing unit 60 the multiple hydrid components 62 mixed uniformly regular tenacity concrete rotated, as it is shown in fig. 7, to pump truck 50 supply above-mentioned regular tenacity concrete by with can be arranged at by the way of dismounting conveying pipe 51 injection guide member 70 discharge to side slope 100.
Wherein, as shown in Fig. 8 to Figure 10, if supplying above-mentioned regular tenacity concrete to injection guide member 70, then guided the inside of body 71 while injection guides body 71 to supply above-mentioned regular tenacity concrete by through above-mentioned injection, regular tenacity concrete will be compressed and be produced pressure, and the above-mentioned injection guiding entrance of body 71, the diameter of outlet are more than the diameter of central part.
nullAnd，As shown in Figure 11 to Figure 12，When the central part guiding body 71 via above-mentioned injection guides the outlet of body 71 to discharge regular tenacity concrete to diameter more than the injection of the central part of above-mentioned injection guiding body 71，To the high pressure air supplying more than 5 air pressure in radial mode at the air supply hole 72 that injection guides the outer peripheral face of body 71 to tilt，Regular tenacity concrete is made to guide going out interruption-forming eddy current and spraying of body 71 in injection，Above-mentioned compressed air and regular tenacity concrete not only launch in sputtering mode，And when compressed air and regular tenacity concrete launch in sputtering mode，The a large amount of bubbles in regular tenacity concrete are made to eliminate during compressed air and regular tenacity concrete collide with each other，The slump causing regular tenacity concrete because of the elimination of bubble declines，The regular tenacity gunite concrete discharged to side slope 100 is caused to form internal layer portion 200，And outstanding tack can be presented.
The normal concrete that it is 27MPa that table 2 illustrates to mixing intensity and the slump is 70～80mm is mixed into the bubbles volume of per unit volume and reaches the bubble of 20%, 27%, 33%, the experimental result after utilizing compressor and spraying by 9 air pressure.As shown in FIG. 13 to 15, in the case of the bubbles volume added reaches 20%, the slump increases to be mixed into the 250mm after bubble from the 80mm of normal concrete, and reduces after spraying to 90mm.In the case of the bubbles volume added reaches 20%, with the addition of the water of 6.8kg/m3, but, after final injection, the slump reduces, this is because during regular tenacity concrete ejection, portion of water eliminates to air.In the case of the bubbles volume being mixed into reaches 27% and 33%, owing to added Board Lot is more, therefore, understand after spraying, although the final slump is more than the slump of normal concrete, but, with the air capacity of normal concrete or add that to be mixed into air capacity unrelated, final constant amount of air.
And, as mentioned above, owing to being mixed into the bubble of 20～33% relative to volume, the regular tenacity concrete that therefore slump increases suction well, cause being convenient for injection, moreover, only it is being mixed in the case of bubble sprays, because reaching the excessive final slump of 90～150mm, in the case of object side slope injection regular tenacity concrete, regular tenacity concrete will not be attached to side slope, on the contrary landing.Therefore, when the regular tenacity concrete that the slump increases adds and is mixed into cheap in powder morphology and is mixed into, have sticking is formed by a kind of in flyash and slag micropowder or the rudimentary mixing material of mixed powder coal ash and slag micropowder is after reducing water-bond material ratio and spraying, tack can be increased by the final slump of reduction.
Table 2 slump based on bubble mixed volume and air capacity change
I.e., it is mixed into bubble to above-mentioned normal concrete and is formed by a kind of in coal ash and slag micropowder or the rudimentary mixing material of mixed powder coal ash and slag micropowder is suction to increase, and, mix alveolate regular tenacity concrete to be discharged during colliding with each other with high pressure air, therefore, the tack of regular tenacity gunite concrete can be made to increase and guarantee durability by making the bubble of regular tenacity concrete eliminate, and, above-mentioned internal layer portion 200 should be can be formed at side slope 100 in the way of housing by the reinforcing bar of arrangement of reinforcement.
Wherein it is preferred to, on the basis of the cement forming above-mentioned normal concrete of 100 weight portions, being formed by a kind of in above-mentioned flyash and slag micropowder or mixed powder coal ash and the rudimentary mixing material of slag micropowder of mixing 3～30 weight portions.
If forming internal layer portion 200 by said process, then to the concrete mixing and transporting car 40 being transplanted on job site add relative to monolithic concrete volume reach 20～about 40% bubble by the ball bearing effect of bubble and put into and formed by the axle 61 being installed on mixing unit 60 the mixed uniformly high performance concrete of multiple hydrid components 62 rotated by a kind of senior mixing material forming or mix silica flour and metakaolin in silica flour and metakaolin, supply above-mentioned high performance concrete by so that the upper side discharge in the guide member 70 inner layer portion 200 of spraying carrying pipe 51 can be installed on by the way of dismounting to pump truck 50.
Wherein it is preferred to, on the basis of the cement forming above-mentioned normal concrete of 100 weight portions, mix the above-mentioned by a kind of senior mixing material forming or mixing silica flour and metakaolin in silica flour and metakaolin of 2～20 weight portions.This is because in the case of the scope less than senior mixing material, high intensity, high-durability can decline, and in the case larger than the above-mentioned range, high intensity, high-durability also will not increase, but construction cost can rise, and increase tack by reducing the slump.
When above-mentioned high performance concrete is discharged by the upper side in injection guide member 70 inner layer portion 200, guided the inside of body 71 during injection guides body 71 to supply above-mentioned high performance concrete by through above-mentioned injection, above-mentioned high performance concrete is compressed and is produced pressure, above-mentioned injection guides the entrance of body 71, the diameter of outlet is more than the diameter of central part, when the central part guiding body 71 via above-mentioned injection discharges high performance concrete to diameter more than the outlet of the injection guide member 71 of the central part of above-mentioned injection guiding body 71, to the high pressure air supplying more than 5 air pressure in radial mode at the air supply hole 72 that injection guides the outer peripheral face of body 71 to tilt, high performance concrete is made to guide going out interruption-forming eddy current and spraying of body 71 in injection.
Now, preferably, above-mentioned compressed air and high performance concrete not only launch in sputtering mode, and when compressed air and high performance concrete launch in sputtering mode, the a large amount of bubbles in high performance concrete are made to eliminate during compressed air and high performance concrete collide with each other, the slump causing high performance concrete because of the elimination of bubble declines, the high property spray concrete discharged to side slope 100 is caused to form outer layer portion 300, even if the thickness in above-mentioned outer layer portion 300 is less than the thickness in internal layer portion 200, high intensity that the works that also ensures that and pour into a mould high performance concrete is identical and high-durability, therefore, compared with when forming whole side slope 100 by cast high performance concrete, construction cost will reduce, thus can ensure that economy.
The normal concrete that it is 27MPa that table 3 illustrates to mixing intensity and the slump is 70～80mm is mixed into the experimental result that the bubbles volume of per unit volume reaches the bubble of 27%.The slump increases to be mixed into the 260mm after bubble from the 70mm of normal concrete, and after add the silica flour of 8% relative to cement, the slump reduces to 150mm, and after spraying, the slump of high performance concrete is zero.Air capacity 5% increases to be mixed into 27% after bubble from normal concrete, and after adding silica flour, air capacity reduces to 21%, and after spraying, air capacity becomes 5%.
As mentioned above, the silica flour of the normal concrete additional input powder morphology increased to the slump in the way of to be mixed into the bubble of 27% relative to volume, form high performance concrete, because adding the silica flour of powder morphology, reduce water-bond material ratio, thus form the high performance concrete that tack is outstanding, obtain high property spray concrete by spraying above-mentioned high performance concrete.
Table 3 is mixed into bubble and silica flour and carries out the result sprayed
If forming outer layer portion 300 by said process, then to the ready-mixed concrete truck 40 being transplanted on job site add relative to monolithic concrete volume reach 20～about 40% bubble by the ball bearing effect of bubble and put into the coloured material of ferrum oxide, white carbon black etc. and formed by the axle 61 being installed on mixing unit 60 the mixed uniformly color concrete of multiple hydrid components 62 rotated, supply the above-mentioned color concrete upper side by the injection guide member 70 outer layers portion 300 so that conveying pipe 51 can be installed on by the way of dismounting to pump truck 50 and discharge.
Wherein, as shown in figure 16, on the basis of the cement forming above-mentioned common composite soil of 100 weight portions, the ferrum oxide as above-mentioned coloured material of mixing 1～8 weight portions and white carbon black, this is because according to the kind of pigment, be issued to the saturation point of coloring at the 5～8% of cement amount, between 1～3%, colour saturation can steeply rise.Preferably, owing to the particle diameter of above-mentioned pigment is less than cement-particle size, therefore increased the amount of concrete by hybrid pigment, finally, generally intensity is caused to reduce because water cement ratio increases, but, in the case of reach cement amount 5～about 6%, hardly the physical property before and after concrete setting is produced impact, therefore, in view of color saturation is cement amount 5～8% time, from the viewpoint of economy, also will not add the coloured material of more than 8%.
When above-mentioned color concrete is discharged by the upper side in injection guide member 70 outer layers portion 300, the inside being guided body 71 by through above-mentioned injection guides body 71 to supply above-mentioned color concrete to injection, color concrete is made to produce pressure during by compression, above-mentioned injection guides the entrance of body 71, the diameter of outlet is more than the diameter of central part, when the central part guiding body 71 via above-mentioned injection discharges color concrete to diameter more than the outlet of the injection guide member 71 of the central part of above-mentioned injection guiding body 71, to the high pressure air supplying more than 5 air pressure in radial mode at the air supply hole 72 that injection guides the outer peripheral face of body 71 to tilt, color concrete is made to guide going out interruption-forming eddy current and spraying of body 71 in injection.
Now, preferably, above-mentioned compressed air and color concrete not only launch in sputtering mode, and when compressed air and color concrete are launched by sputtering mode, the a large amount of bubbles in color concrete are made to eliminate during compressed air and color concrete collide with each other, causing the slump to decline because of the elimination of bubble, cause the colored gunite concrete discharged to side slope 100 to form skin section 400, the thickness of above-mentioned skin section 400 is less than the thickness in outer layer portion 300.
In above-mentioned internal layer portion 200 and outer layer portion 300 and skin section 400, can the normal concrete health preserving 14 in internal layer portion 200～after 28 days formed outer layer portion 300, but, owing to spraying in the way of gunite concrete, therefore in the case of internal layer portion 200 not landing, outer layer portion 300 can be formed by injection in internal layer portion 200, therefore can reduce the engineering time.
And, as shown in Figure 17 to Figure 18, if forming internal layer portion 200, outer layer portion 300 and skin section 400 by said process, then use the anchor head (AnchorHead) for being fixed up stating the prominent strengthening part 20 of skin section 400, above-mentioned anchor head is for the fixing high load capacity putting on above-mentioned strengthening part 20, usual wedge (wedge) fixture 30 is fixed and terminates construction, but, after forming outer layer portion 300, also construction can be completed when using fixture 30 to fix strengthening part 20 by forming skin section 400.
In the present invention, above-mentioned embodiment is only an example, the invention is not limited in examples detailed above.There is the substantially identical structure of the thought described with the invention claimed range of the present invention, play any content of same effect and belong to the technical scope of the present invention.
Claims (11)
1. the combination type side slope utilizing high property spray concrete and strengthening part adds strong method, it is characterised in that including:
Mixing water, cement and aggregate produce the normal concrete that compressive strength is 21～30MPa the step transferred to job site to scale；
The regular tenacity concrete mixing above-mentioned normal concrete, bubble and rudimentary mixing material by mixing unit is discharged to side slope by injection guide member, forms the thickness step more than the internal layer portion in outer layer portion；
The high performance concrete mixing above-mentioned normal concrete, bubble and senior mixing material by mixing unit is discharged by the upper side in injection guide member inner layer portion, forms the thickness step less than the outer layer portion in internal layer portion；
The color concrete mixing above-mentioned normal concrete, bubble and coloured material by mixing unit is discharged by the upper side in injection guide member outer layers portion, forms the step of skin section；And
When discharging each concrete by above-mentioned injection guide member, spray the pressure-air of more than 5 air pressure, make the bubble in each concrete eliminate and reduce the step of the slump.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 1 adds strong method, it is characterised in that above-mentioned rudimentary mixing material is a kind of or flyash in flyash and slag micropowder and the mixture of slag micropowder.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 2 adds strong method, it is characterized in that, on the basis of the cement forming above-mentioned normal concrete of 100 weight portions, the above-mentioned rudimentary mixing material of mixing 3～30 weight portions.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 1 adds strong method, it is characterised in that above-mentioned senior mixing material is a kind of or silica flour in silica flour and metakaolin and the mixture of metakaolin.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 4 adds strong method, it is characterized in that, on the basis of the cement forming above-mentioned normal concrete of 100 weight portions, the above-mentioned senior mixing material of mixing 2～20 weight portions.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 1 adds strong method, it is characterised in that above-mentioned coloured material is a kind of or blending iron oxide in ferrum oxide and white carbon black and the mixture of white carbon black.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 6 adds strong method, it is characterised in that on the basis of the cement forming above-mentioned normal concrete of 100 weight portions, the above-mentioned coloured material of mixing 1～8 weight portions.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 1 adds strong method, it is characterised in that above-mentioned mixing unit includes:
Axle, is located at the inside of the concrete mixing and transporting car putting into above-mentioned normal concrete, by the dynamic rotation of motor；And
Hydrid component, is formed at above-mentioned axle with more than one-level radial, mixes normal concrete, bubble, mixing material and coloured material for rotating along the direction of rotation of axle.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 1 adds strong method, it is characterised in that above-mentioned injection guide member includes:
Injection guides body, internal through in the way of discharge after making above-mentioned regular tenacity composite soil, high performance concrete and color concrete flow into and be compressed, each concrete flows into, the entrance discharged, outlet diameter more than the diameter of central part；And
Air supply hole, in the way of supplying the pressure-air of more than 5 air pressure, through injection guide member forms, in order to make the bubble in each concrete that above-mentioned injection guides body to flow into eliminate and reduce air capacity.
The combination type side slope utilizing high property spray concrete and strengthening part the most according to claim 9 adds strong method, it is characterised in that above-mentioned air supply hole guides the outer peripheral face of body to tilt to form in radial mode in above-mentioned injection.
The 11. combination type side slopes utilizing high property spray concrete and strengthening part according to claim 1 add strong method, it is characterised in that also include the step fixing above-mentioned strengthening part by fixture.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0159102 | 2013-12-19 | ||
| KR1020130159102A KR101415891B1 (en) | 2013-12-19 | 2013-12-19 | Slope reinforcement methode for using thr high performance shotcrete and reinforcement |
| PCT/KR2014/011815 WO2015093760A1 (en) | 2013-12-19 | 2014-12-04 | Slope reinforcing method using high-performance shotcrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105829612A true CN105829612A (en) | 2016-08-03 |
| CN105829612B CN105829612B (en) | 2018-06-05 |
Family
ID=51741329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480069796.4A Expired - Fee Related CN105829612B (en) | 2013-12-19 | 2014-12-04 | Strengthen method using the side slope of high property spray concrete |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101415891B1 (en) |
| CN (1) | CN105829612B (en) |
| WO (1) | WO2015093760A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019218132A1 (en) * | 2018-05-14 | 2019-11-21 | 重庆大学产业技术研究院 | Green cement mortar for three gorges reservoir region hydro-fluctuation belt and preparation method therefor |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101698550B1 (en) * | 2015-01-30 | 2017-01-23 | 대상이앤씨(주) | Construction method of scenery structure using high-performance shotcrete |
| KR101660023B1 (en) * | 2016-04-18 | 2016-09-26 | 신일에스앤지(주) | Collar shotcrete construction method |
| CN106368225A (en) * | 2016-10-18 | 2017-02-01 | 中国电建集团成都勘测设计研究院有限公司 | Geological condition distinguishing and position length adjusting method for anchorage section of anchor cable of rock slope |
| US10981831B2 (en) | 2017-09-21 | 2021-04-20 | Crown Products & Services, Inc. | Dry mix and concrete composition containing bed ash and related methods |
| KR102196953B1 (en) | 2020-05-08 | 2021-01-04 | 대상이앤씨(주) | High Perfomance Collar Grout Composition And High Performance Collar Shotcrete Construction Method Using The Same |
| KR102280230B1 (en) * | 2021-01-26 | 2021-07-23 | 하리기술이십이 주식회사 | Slope artificial rock composition method using color mortar |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074065A (en) * | 2001-09-06 | 2003-03-12 | Ohbayashi Corp | Drain layer forming method in slope face and slope face greening method using this method |
| CN1786418A (en) * | 2004-12-09 | 2006-06-14 | 周德祥 | Separating type wet spray machine set for concrete |
| CN101122234A (en) * | 2007-08-14 | 2008-02-13 | 陕西金石混凝土科技发展有限公司 | Construction method for using liquid quick coagulator for injecting concrete |
| CN201419442Y (en) * | 2009-06-10 | 2010-03-10 | 上海德滨机械设备科技有限公司 | Storage tank with agitating device for mortar to be mixed |
| CN101994285A (en) * | 2009-08-20 | 2011-03-30 | 安徽奥来新能源有限公司 | Colorful boulders capable of being jointed into grass planting brick |
| CN202144747U (en) * | 2011-07-21 | 2012-02-15 | 湖南五新重型装备有限公司 | Concrete wet spraying machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050079706A (en) * | 2004-02-06 | 2005-08-11 | 최제인 | Slope protection structure and reinforcement method of construction attached to pressure shotsoils or soilcement |
| KR20090096077A (en) * | 2008-03-07 | 2009-09-10 | (주)성광종합기술개발 | Cut-Slope Vegetation-Stabilization Structure and Cut-Slope Vegetation-Stabilization Method |
| KR20100011600A (en) * | 2008-07-25 | 2010-02-03 | (주) 캐어콘 | Short crete blowing device and method for repairing the damaged part section of a concrete structure using said it |
| KR101073967B1 (en) | 2008-12-15 | 2011-10-17 | 강원대학교산학협력단 | Pre-mix composition for shotcrete of wet method and repair method using the same |
| KR101073969B1 (en) * | 2010-09-09 | 2011-10-17 | 대상엔지니어링(주) | Repair method for slope and curved surface in concrete construction using shotcrete |
| KR101336165B1 (en) | 2012-04-27 | 2013-12-03 | 주식회사 유니온 | High performance composite material for shotcrete and high performance shotcrete using it |
-
2013
- 2013-12-19 KR KR1020130159102A patent/KR101415891B1/en active IP Right Grant
-
2014
- 2014-12-04 CN CN201480069796.4A patent/CN105829612B/en not_active Expired - Fee Related
- 2014-12-04 WO PCT/KR2014/011815 patent/WO2015093760A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074065A (en) * | 2001-09-06 | 2003-03-12 | Ohbayashi Corp | Drain layer forming method in slope face and slope face greening method using this method |
| CN1786418A (en) * | 2004-12-09 | 2006-06-14 | 周德祥 | Separating type wet spray machine set for concrete |
| CN101122234A (en) * | 2007-08-14 | 2008-02-13 | 陕西金石混凝土科技发展有限公司 | Construction method for using liquid quick coagulator for injecting concrete |
| CN201419442Y (en) * | 2009-06-10 | 2010-03-10 | 上海德滨机械设备科技有限公司 | Storage tank with agitating device for mortar to be mixed |
| CN101994285A (en) * | 2009-08-20 | 2011-03-30 | 安徽奥来新能源有限公司 | Colorful boulders capable of being jointed into grass planting brick |
| CN202144747U (en) * | 2011-07-21 | 2012-02-15 | 湖南五新重型装备有限公司 | Concrete wet spraying machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019218132A1 (en) * | 2018-05-14 | 2019-11-21 | 重庆大学产业技术研究院 | Green cement mortar for three gorges reservoir region hydro-fluctuation belt and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105829612B (en) | 2018-06-05 |
| KR101415891B1 (en) | 2014-07-09 |
| WO2015093760A1 (en) | 2015-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105829612A (en) | Slope reinforcing method using high-performance shotcrete | |
| US10000896B2 (en) | Two-layer concrete pavement forming device and pavement method using normal concrete and high-performance concrete | |
| CN105666687B (en) | Prestressing force Reactive Powder Concrete box girder construction technique | |
| KR101575889B1 (en) | Continuously reinforced concrete pavement construction method using foam shotcrete | |
| CN107602145A (en) | A kind of high-ductility concrete and the concrete road surface using its cast | |
| CN103086672A (en) | Wet spraying concrete and production method thereof | |
| KR101415890B1 (en) | Manufacturing equipment and method of manufacturing for highly efficient concrete that have been undergoing process of mixing and dissipating air on common concrete | |
| CN108002765B (en) | C30P16 expansive fiber concrete preparation and concrete construction process | |
| CN114956744B (en) | Nano modified high-density sprayed concrete and construction method of water-rich tunnel using nano modified high-density sprayed concrete | |
| KR100955062B1 (en) | Concrete composition for park | |
| KR101614118B1 (en) | Injection apparatus and method for mix concrete that have been undergoing process of mixing and dissipating air and mixing materials on common concrete | |
| KR101899051B1 (en) | Shotcrete composition for resistance to abrasion and cracking and skateboard park construction method using the same | |
| CN110792210A (en) | Construction method for high-strength thin rammed earth wall with thickness of 40mm-100mm | |
| CN103496901B (en) | Country rock wet shot concrete method inferior | |
| CN105985086A (en) | Cement imitation wood component and preparation method thereof | |
| CN104987011B (en) | A kind of road anti-glare panel | |
| CN105200981B (en) | nickel slag cement pile and preparation method thereof | |
| CN106801482A (en) | A kind of current conversion station fire wall construction technology | |
| CN109437736A (en) | A kind of Machine-made Sand fibrous shotcrete and its construction technology for being served as a contrast at the beginning of tunnel | |
| Melbye | Keynote lecture: International practices and trends in sprayed concrete | |
| CN110093918A (en) | A kind of deep layer displacement dynamic-ramming gravel pile soil matrix reinforcement means | |
| CN110714788A (en) | Grouting repair method for secondary lining crack of tunnel | |
| CN106759562A (en) | Foundation reinforcement method | |
| JP4535421B2 (en) | Slope concrete construction method | |
| CN201874587U (en) | Shot supporting construction for coal mine tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 |