CN106699069A - Low-intensity groove concrete produced by using red brick construction wastes and construction technology of low-intensity groove concrete - Google Patents
Low-intensity groove concrete produced by using red brick construction wastes and construction technology of low-intensity groove concrete Download PDFInfo
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- CN106699069A CN106699069A CN201710036933.XA CN201710036933A CN106699069A CN 106699069 A CN106699069 A CN 106699069A CN 201710036933 A CN201710036933 A CN 201710036933A CN 106699069 A CN106699069 A CN 106699069A
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Classifications
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
-
- 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
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/12—Back-filling of foundation trenches or ditches
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a low-intensity groove concrete produced by using red brick construction wastes and a construction technology of the low-intensity groove concrete. The construction wastes generated in the city construction process are utilized for recycling, and the low-intensity groove concrete is prepared by stirring a construction waste recycled coarse material, a construction waste recycled fine material, cement, an admixture and water. Through strict classification and management of the specifications and the quality of construction waste recycled products, various construction waste recycled aggregates with various specifications are fully utilized by the materials, meanwhile, the technical requirements of pipe canal backfilling are met, and the mechanical strength of the low-intensity concrete after being hardened is adjusted according to the engineering requirements. A new way for recycling the construction wastes is expanded, the backfilling construction problem that backfilling materials in backfilling construction of some parts cannot be easily compacted effectively is solved, more importantly, the problem that artificial excavation is not facilitated after pipe canal backfilling at present is solved, unnecessary waste resources in municipal engineering are reduced, and meanwhile, the construction wastes with various specifications are fully utilized.
Description
Technical field
It is specifically a kind of to be produced using the building waste containing common brick the invention discloses a kind of new civil engineering material
The weak concrete dedicated for trench backfill, it is adaptable to retaining walls the back of the body backfill, Bridge-Culvert Platform Back backfill, road widening project road
The engineerings such as base backfill, urban road backfilling of pipe canal, the backfill of inspection shaft periphery, underground engineering and the backfill of narrow and small building foundation pit.
Background technology
It is a large amount of old to build as China's economy is developed rapidly and enlargement of cities speed is constantly accelerated since recent two decades
Build thing or road and bridge is removed, generate a large amount of building wastes.According to incompletely statistics, the building waste that China produces every year is about
It it is 40,000,000 tons, wherein discarded concrete structural construction rubbish is 13,600,000 tons, accounts for 1/3rd of building waste total amount.And
Current China's building waste to fill, it is outdoor store up based on, harm is serious, and less than 5%, recycling treatment facility lacks resource rate
Weary, industry development is in the starting stage.In nationwide, building waste is most or landfill is stacked, and garbage-surrounded city, rubbish enclose village
It is commonplace, and because many cities do not have special Waste Landfill Site, it is very ferocious that building waste huddles the phenomenon disorderly fallen
It is rampant, mostly it is illegal stacking.According to CCTV's news in October, 2013 No. 8 and No. 10, Beijing has regular building waste to fill out at present
Bury field 25, and illegal landfill yard is more than 50, these landfill yards take up an area deforestation, pollute environment.Therefore, how to solve so
As many as building waste, have become countries in the world research focus.Predicted according to relevant department, annual 2000000000 m of China2More than
Engineering construction will continue 10~15 years.About 600,000,000 tons of building waste is produced per annual meeting simultaneously.And every ten thousand m2The Old building of dismounting will
Produce 7000~12000 tons of building wastes.The quantity of China's building waste has accounted for the 30%~40% of municipal refuse total amount.
At the same time, in road construction and maintenance, the backfill at some engineering positions cannot carry out Effective Compaction.Such as
Urban roadbed fluting carries out the backfill after pipeline is buried, the backfill of inspection shaft periphery, the backfill of pick road, the retaining walls back of the body and abutment
Back filling behind abutment etc., due to being limited by structures such as pipelines, along with the restriction of the factor such as refill spaces are narrow and small, it is impossible to use
Big machinery carries out roller compaction construction, causes compactness to be extremely difficult to design requirement, so as to cause the diseases such as backfill deformation, depression,
And cannot effectively be repaired after disease generation.Additionally, when urban road road surface occurs and the dangerous situation such as collapses, traditional backfill skill
Art is even more the requirement for being difficult to meet speed of application and construction quality.
At present, it is domestic to propose some new materials and new technology, such as bubble for produced problem in above-mentioned stemming operation
Light soil, fluidized fly ash, argil fly-ash concrete etc..Bubble lightweight soil unit weight is small, mobility is high, can be by pipeline pump
Send, but its cement consumption is high, and introducing bubble makes its work progress complex, causes material construction also higher.Fluidised form fine coal
Ash backfill speed is fast, and construction technology is simple, and cost is relatively low, but place backfill in rich groundwater is influenceed larger by water, firmly
Crack is more after change, and early strength is relatively low.Argil fly-ash concrete density is small, intensity is high, modulus of compressibility is big, using vibrating into
Type and without compacting, can eliminate " dead angle " being backfilling and compacted, but its cement consumption is higher, and cost is higher.Therefore, above-mentioned material is big
All it is difficult to the large-scale promotion application in stemming operation.
Building waste mainly including waste concrete, waste mortar, useless brick, useless watt and dregs etc., sorted, broken, screening plus
After work, can be re-used as regrown material mostly.But because China's building waste classification work owes perfect, in building waste
The impurity contents such as soil, brick, stone are more, and complicated component, mass discrepancy is larger；In addition, China is in terms of building waste comprehensive utilization
Useful technology it is few, the maturity of prior art is still relatively low, it is difficult to large-scale promotion application.At present, by primary in building waste
Obtained regeneration is thick after concrete disintegrating, screening, fine aggregate is obtained in that preferable regeneration, and the impurity content such as soil, stone
The big urban building waste comprehensive utilization ratio of high, common brick content is relatively low, easily produces secondary pollution problem, have impact on urban architecture
The comprehensive regeneration of rubbish.
The content of the invention
It is an object of the invention to：1. provide a kind of completely using the new material of building waste production, widen building waste
The new way of regeneration；2. backfilling material is difficult by the backfill construction hardly possible of Effective Compaction in solving the backfill construction of some positions
Topic；3. the situation of hand excavation is unfavorable for after the current backfilling of pipe canal of what is more important solution, it is unnecessary in reduction municipal works
The wasting of resources, while making full use of the building waste of all size.
To achieve the above object, the technical solution adopted by the present invention is a kind of using the low strong of the production of building waste containing common brick
Degree groove concrete and its construction technology, the building waste produced in the technology utilization Process of Urban Development carry out regeneration,
And it is a kind of suitable for the low of trench backfill to choose the relatively low production of the building waste containing common brick of wherein second-rate, regeneration rate
Strength concrete.A kind of low-intensity groove concrete using the production of building waste containing common brick, the weak concrete is by building
Garbage regeneration coarse fodder, construction refuse regenerated fines, cement, admixture and water are prepared to mix and stir and formed, then the particle diameter of coarse materials exists
Between 4.75~26.5mm, the particle diameter for regenerating fines is less than 4.75mm.Entered by the specification to construction refuse regenerated product, quality
Row strict classification and management, and the treatment of Other Engineering technical measures so that the material makes full use of the building rubbish of all size
Rubbish regenerated aggregate, while the technical requirements of backfilling of pipe canal can be met again, and the mechanical strength root after weak concrete hardening
Be adjusted according to requirement of engineering, its 1d intensity adjustments scope be 0.4MPa~1.0MPa, 28d intensity adjustments scope be 2.0MPa~
6.0MPa。
Each component and its consumption the directiveness scope of the low-intensity groove concrete produced using the building waste containing common brick
As shown in table 1：
Each component and its consumption the directiveness model of the low-intensity groove concrete that table 1 is produced using the building waste containing common brick
Enclose table
Note：Admixture volume is the percentage of construction refuse regenerated gross mass of gathering materials；
Wherein, the cement is Portland cement, and strength grade is 42.5R, according to construction level, design objective etc.
Reasonable selection cement consumption.
The building waste is the Building class rubbish of generation in the infrastructure constructions such as urban house building and demolishing process
Material, Building class refuse material material and the product such as including common brick class, waste and old or discarded coagulation great soil group, mortar class, brick and tile class
Raw dust and other impurities material.
The particle diameter that construction refuse regenerated coarse fodder is it to be produced in sorting, broken, screening process 4.75~26.5mm it
Between, regeneration fines is building waste of the particle diameter less than 4.75mm.
It is construction refuse regenerated gather materials should meet following technical requirements：
(1) granule content of the coarse materials more than 26.5mm is less than 10% again
(2) granule content of the regeneration fines more than 4.75mm is less than 10%；
(3) granule content of the regeneration fines less than 0.075mm is more than 8%；
(4) the construction refuse regenerated content of organics that gathers materials is less than 1%；
(5) the construction refuse regenerated harmful components such as heavy metal that can not contain and pollution is produced to underground water, soil of gathering materials.
Admixture is slag powders, flyash, phosphorus slag powder, silicon ash, cohesive soil etc., must be given birth to through using the building waste containing common brick
The qualified rear of low-intensity groove concrete performance test of product can be used, and its technical requirements should meet《Highway engineering coagulating cement
Native additive and admixture application technology guide》Requirement.
Material of the present invention is quality when drying.
The water is drinkable running water.
The specific measuring instrument of the low-intensity groove concrete using the production of building waste containing common brick provided by the present invention
Equipment, measuring method：With reference to《Highway engineering cement and cement concrete test specification》(JTE E30-2005) " cement concrete
Mixture consistency test method (slump instrument method) (T0522-2005) " measures groove concrete mix workability, measurement essence
Really to 1mm, as a result the revision of the convention is to immediate 5mm.
A kind of low-intensity groove concrete construction process using the production of building waste containing common brick, the implementation of the technique
It is as follows：
S1, the moisture content for determining construction refuse regenerated coarse fodder：With reference to《Highway engineering is gathered materials testing regulations》(JTG E42-
2005) moisture content of " coarse aggregate water ratio test (T0305-1994) " measurement construction refuse regenerated coarse fodder used, is accurate to
0.1%, using the arithmetic mean of instantaneous value of result of the test twice as measured value.
S2, the moisture content for determining construction refuse regenerated fines：With reference to《Highway engineering is gathered materials testing regulations》(JTG E42-
2005) moisture content of " fine aggregate water ratio test (T0332-2005) " measurement construction refuse regenerated fines used, is accurate to
0.1%, using the arithmetic mean of instantaneous value of result of the test twice as measured value.
S3, the water absorption rate and apparent density that determine construction refuse regenerated coarse fodder：With reference to《Highway engineering is gathered materials testing regulations》
(JTGE42-2005) " coarse aggregate density and the moisture content test (volumetric flask method) (T0308-2005) " measurement building waste used is again
Coarse materials apparent density is accurate to 3 after decimal point；Water absorption rate is accurate to 0.1%.With the arithmetic mean of instantaneous value of result of the test twice
As measured value.
S4, the water absorption rate and apparent density that determine construction refuse regenerated fines：With reference to《Highway engineering is gathered materials testing regulations》
(JTGE42-2005) " fine aggregate density and the moisture content test (T0330-2005) " measurement construction refuse regenerated fines used is apparent
Density is accurate to 3 after decimal point；Water absorption rate is accurate to 0.1%.Using the arithmetic mean of instantaneous value of result of the test twice as measured value.
S5, determine raw material and laboratory's match ratio：
After determining raw material, it follow these steps to carry out the low-intensity groove concrete using the production of building waste containing common brick
Laboratory's mix-design：
S5.1 determines the preparation strength f of groove concretecu,oAnd the expected slump T (mm) Con trolling index (MPa)；
Preparation strength fs of the S5.2 according to groove concretecu,oAnd actual cement strength f (MPa)ceDetermine its pollinating family progeny
W1/C；
S5.3 determines groove concrete sand ratio μ；
S5.4 is according to sand coarse aggregate ratio μ, ratio of mud W1/ C and expected slump T determine the free water consumption W of groove concrete1(kg/
m3)；
S5.5 is according to pollinating family progeny W1/ C and free water consumption W1, calculate and determine cement consumption C (kg/m3)；
S5.6 determines construction refuse regenerated coarse fodder consumption G by absolute its volumetric method in concrete mixing proportion design method
(kg/m3), and construction refuse regenerated fines consumption S (kg/m3)；
S5.7 calculates admixture consumption F (kg/m according to regenerated aggregate gross mass3)
S5.8 calculates additional water consumption W according to construction refuse regenerated aggregate water absorption2(kg/m3)；
S5.9 is by free water consumption W1With additional water consumption W2Addition obtains total water consumption W (kg/m3)；
S5.10 carries out the trial mix of groove concrete, checks workability, intensity, the durability index of trial mix groove concrete；
The match ratio of S5.11 selections workability, intensity and durable sexual satisfaction design requirement is the final examination of groove concrete
Test room match ratio.
S6, according to laboratory match ratio conversion coordination in works：
(1) actual construction refuse regenerated coarse fodder consumption is calculated：GR=G × (1+a)；
(2) actual construction refuse regenerated fines consumption is calculated：SR=S × (1+b)；
(3) actual admixture consumption is calculated：FR=F × (1+c)；
(4) actual used water amount is calculated：WR=W- (GR-G)-(SR-S)-(FR-F)；
Wherein：GR--- actual construction refuse regenerated coarse fodder consumption, kg/m3；
G --- construction refuse regenerated coarse fodder consumption, kg/m in match ratio3；
SR--- actual construction refuse regenerated fines consumption, kg/m3；
S --- construction refuse regenerated fines consumption, kg/m in match ratio3；
FR--- actual admixture consumption, kg/m3；
F --- admixture consumption in match ratio, kg/m3；
A --- the moisture content of the construction refuse regenerated coarse fodder of actual measurement, %；
B --- the moisture content of the construction refuse regenerated fines of actual measurement, %；
C --- the moisture content of actual measurement admixture, %；
WR--- actual used water amount, kg/m3；
W --- the consumption of match ratio reclaimed water, kg/m3。
S7, load weighted construction refuse regenerated coarse fodder, construction refuse regenerated fines are poured into agitated kettle successively.
S8, add water, stirring 30s or so makes regenerated aggregate be fully contacted with water, then soaks about 3 minutes.
S9, addition cement and admixture, are again stirring for 8~10 minutes, obtain final product using the low of the production of building waste containing common brick
Intensity groove concrete.
The construction method of the low-intensity groove concrete using the production of building waste containing common brick provided by the present invention is as follows：
S1, foundation ditch cleaning：Thoroughly the debris such as empty quarrel, surface dust in removing foundation ditch, ensure without ponding, and tamp whole in foundation ditch
Flat, the roadbed being compacted to periphery is neat by the cutting of its edge.
S2, Raw Materials Sampling Inspection and stacking：Raw material are inspected by random samples in time after marching into the arena, and rational stacking, and particularly cement will do anti-
Tide treatment.
S3, construction machinery：Scene is preferably used directly to mix and stir for rapid rush-repair engineering, it is proposed that to use 2 drum-type stirrings
Machine adds 2 artificial small handcart double raise chutes, or other similar devices.
S4, compound stirring：Moisture content testing result according to raw material, strictly controls various raw material usages, additional
Water by compound reach design the slump be defined, raw material for it is construction refuse regenerated gather materials, admixture；Weigh various raw material
When, various weighing apparatus must keep accurate；Compound uses drum mixer, and is stirred according to above-mentioned flow of mixing and stirring,
Mixed again after should being smashed construction refuse regenerated fines, admixture for luming etc. before mixing and mixed and stirred.The good compound of mixing collapses
Degree should meet design slump value, not isolate, not bleeding.
S5, compound transport：By the good compound of mixing, manually small handcart or other means of transports are transported to appointed place,
And smooth groove directly pours into specified location in foundation ditch, requirement is poured uninterrupted.
S6, compound are poured：Support, template are checked before pouring compound, debris, the ponding cleaning in template are dry
Only；Template should clog closely knit, template inner side brush releasing agent if any gap；Compound tipping height is not more than 2 meters, when the discrepancy in elevation is larger
Guiding gutter is set；Compound should use vibrator jolt ramming by thickness, order and direction placement layer by layer after the completion of pouring,
Construction thickness should not be more than 2 meters, when position is backfilled highly more than 2 meters, using construction in layer method；During construction in layer, bottom
Compound answer abundant jolt ramming and ensure its do not isolate, not bleeding, then start upper strata construction；When in foundation ditch compound have substantially from
During analysis, stirred with instruments such as creepers；Pour the compound in foundation ditch is flattened with scraper plate after finishing, pour height and reach
To stopping construction during design height；When ground railway embankment, baffle plate should be set at groove two ends, or with filling native stone
The gunnysack of material is piled into barricade, prevents the excessive of compound, should ensure that baffle plate or barricade meet supporting construction intensity requirement.Work as gas
Should stop pouring when temperature is less than 5 DEG C.
S7, compound maintenance：After the completion of compound is poured, should dispense suitable quantity of water after top layer knot is hard carries out health, or spills
Plastic covering film health after water, also can earthing health, conditioned time typically preferably ensures 1d depending on construction requirement and firm time
More than, forbid vehicle, pedestrian to pass through during health.
S8, sealing：When being used as roadbed backfilling material, health can directly carry out other roadbeds after finishing on compound
The engineering constructions such as earthen backfill, road cushion backfill；When being used as road cushion, sealing is carried out after curing on compound that should be
Start roadbase construction after treatment, sealing can be using modes such as spread emulsified asphalt, cement mortars；Make as foundation ditch backfilling material
Used time, carry out enveloping treatment after curing on compound that should be, seal coat structure is generally 8% rendzinas, and compacting criteria meets
Former basement process standard, sealing construction should be concordant with original ground after finishing；The platform back of the body, culvert back of the body backfill sealing preferably use rendzinas and dirt
Rubble is backfilled, and compactness is not less than 96%.Seal coat thickness is preferably 30cm~60cm.
Compared with existing backfilling material, the invention has the advantages that：
1st, it is economic and environment-friendly：Construction refuse regenerated sheet of gathering materials contains part common brick, mortar, concrete, Yi Jiwei as one kind
The mixing material of powder and organic impurities etc., second-rate, regeneration rate is relatively low.Material provided by the present invention can be used largely
It is above-mentioned it is construction refuse regenerated gather materials, be that the comprehensive regeneration of building waste opens new approach, it is economical and environmentally friendly.
2nd, good application property：Material provided by the present invention has good workability, and large-scale apparatus is not needed when pouring
Rolling operation, it is only necessary to slight jolt ramming, you can reach packing higher, crawl space can be carried out or other are not easy to large-scale device
The region construction of tool compacting operation.
3rd, people is difficult to after solving when the engineering positions such as road foundation fluting, the retaining walls back of the body and Abutment Back backfill
The problem that work is excavated, facilitates late maintaining and the maintenance works such as backfill position pipeline.
4th, intensity can adjust：The intensity of material provided by the present invention can be adjusted according to requirement of engineering, under normal circumstances
1d intensity adjustments scope is 0.4MPa~1.0MPa, and 28d intensity adjustments scope is 2.0MPa~6.0MPa.
5th, it is applied widely：Raw materials (such as construction refuse regenerated gather materials, admixture) price is more cheap, construction
Process is simple, it is adaptable to polytype stemming operation.
It is applied to the low-intensity groove Control Measures for Concrete Slump angle value of utilization building waste containing the common brick production of different engineering types
The requirement of table 2 should be met.
The low-intensity groove concrete workability evaluation criterion that table 2 is produced using building waste containing common brick
| Workability | The slump/mm | The scope of application |
| Workability is poor | 50 ＜ ,≤100 | The stemming operations such as pipe trench, the roadbed of larger space |
| General workability | 100 ＜ ,≤150 | General stemming operation |
| Workability is preferable | 150 ＜ | There is the stemming operation of narrow operating space |
The present invention is further described below in conjunction with specific embodiment.
Specific embodiment
Embodiment 1
Certain urban road backfilling of pipe canal is constructed, because pipeline protection and building line are narrow, it is impossible to use large-scale compacting machinary
It is compacted, and the engine request later stage can excavate.The low-intensity that the utilization building waste containing common brick provided using the present invention is produced
Groove concrete is used as backfilling material, and specific embodiment is as follows：
Construction material：Cement used is Portland cement, strength grade 42.5R；It is construction refuse regenerated to gather materials for certain
The production of one regeneration factory, regeneration coarse fodder moisture content is 3%, and regeneration fines moisture content is 3%, and meeting above-mentioned regenerated aggregate technology will
Ask；Flyash is I grade of F classes, and moisture content is 2%, and its quality meets national technical standard；Water is drinkable running water.
Work progress：
S1, mucking：The debris such as empty quarrel, rubbish in removing pipe trench, without ponding in pipe trench.
S2, Raw Materials Sampling Inspection and stacking：To it is construction refuse regenerated gather materials, the raw material such as cement, flyash, water reducer are carried out
Sampling observation, quality meets the regulation of relevant specification of country standard.
S3, construction machinery：Using 2 drum mixers+2 secondary chute of artificial small handcart+2.
S4, compound stirring：The match ratio of the low-intensity groove concrete of selected utilization building waste containing common brick production
It is cement 51kg/m3, flyash 180kg/m3, construction refuse regenerated coarse fodder 541kg/m3, construction refuse regenerated fines 1263kg/
m3, water 442kg/m3.It is stirred using drum mixer, each amount of agitation is about 0.2m3, whipping process meets above-mentioned ditch
Groove concrete preparation flow.
S5, compound are transported and poured：The mixing smooth groove of good compound is directly poured into specified location in pipe trench, due to
Backfill position is highly more than 2 meters, and layering jolt ramming is carried out to compound using vibrator in casting process, and it is right after finishing all to pour
Compound in pipe trench is flattened.
S6, compound maintenance：After the completion of pouring, when top layer condenses, (about 6h) sprinkling suitable quantity of water health, prohibits during health
Only vehicle, pedestrian pass through.Health finishes rear (about 1d) and carries out the construction of the operations such as sealing.
Construction effect：In work progress, the slump value of material provided by the present invention has reached 150mm, does not isolate, does not secrete
Water, 1d intensity reaches 0.5MPa, and intensity reaches 3.0MPa within 28 days, meets the intensity requirement to backfilling of pipe canal.
Embodiment 2
There is road surface and collapses in certain urban road, and need to carry out backfill treatment, and the utilization provided using the present invention is built containing common brick
The low-intensity groove concrete of rubbish production is used as backfilling material, and specific embodiment is as follows：
Construction material：Cement used is Portland cement, strength grade 42.5R；It is construction refuse regenerated to gather materials for certain
The production of one regeneration factory, regeneration coarse fodder moisture content is 4%, and regeneration fines moisture content is 4%, and meeting above-mentioned regenerated aggregate technology will
Ask；Flyash is III grade of F classes, and moisture content is 5%, and its quality meets national technical standard；Water is drinkable running water.
Work progress：
S1, cleaning foundation ditch：The debris such as empty quarrel, surface dust in removing foundation ditch, and leveling is tamped, the cutting of its edge is whole
Together.
S2, construction machinery：Using 2 drum mixers+2 secondary chute of artificial small handcart+2.
S3, compound stirring：The match ratio of the low-intensity groove concrete of selected utilization building waste containing common brick production
It is cement 120kg/m3, flyash 178kg/m3, construction refuse regenerated coarse fodder 1260kg/m3, construction refuse regenerated fines 745kg/
m3, water 421kg/m3.It is stirred using drum mixer, each amount of agitation is about 0.2m3, whipping process meets above-mentioned ditch
Groove concrete preparation flow.
S4, compound are transported and poured：The mixing smooth groove of good compound is directly poured into specified location in pipe trench, due to
Backfill position is highly more than 2 meters, and layering jolt ramming is carried out to compound using vibrator in casting process, and it is right after finishing all to pour
Compound in pipe trench is flattened.
S5, compound maintenance：After the completion of pouring, (about 6h) sprinkling suitable quantity of water health, prohibits during health when on top layer, knot is hard
Only vehicle, pedestrian pass through.Health finishes rear (about 1d) and carries out the construction of the operations such as sealing.
Construction effect：In work progress, the slump value of material provided by the present invention has reached 100mm, does not isolate, does not secrete
Water, 1d intensity reaches 0.8MPa, and intensity reaches 5.2MPa within 28 days, has both met the requirement of quickly stuffing treatment, meets again and satisfies the need
The intensity requirement of face basic unit.
Claims (9)
1. the low-intensity groove concrete that a kind of utilization building waste containing common brick is produced, it is characterised in that：The weak concrete
Prepared by construction refuse regenerated coarse fodder, construction refuse regenerated fines, cement, admixture and water and mix and stir and form, then coarse materials grain
Between 4.75~26.5mm, the particle diameter for regenerating fines is less than 4.75mm in footpath；By the specification to construction refuse regenerated product, matter
Amount carries out strict classification and management, makes full use of the construction refuse regenerated of all size to gather materials, while can meet backfilling of pipe canal again
Technical requirements, and weak concrete hardening after mechanical strength be adjusted according to requirement of engineering, its 1d intensity adjustment
Scope is 0.4MPa~1.0MPa, and 28d intensity adjustments scope is 2.0MPa~6.0MPa；
Each component and its consumption the directiveness scope such as table 1 of the low-intensity groove concrete produced using the building waste containing common brick
It is shown：
Each component and its consumption the directiveness scope of the low-intensity groove concrete that table 1 is produced using the building waste containing common brick
Table
Note：Admixture volume is the percentage of construction refuse regenerated gross mass of gathering materials.
2. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：The cement is Portland cement, and strength grade is 42.5R, is used according to construction level, design objective selection cement
Amount.
3. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：Building waste is the Building class refuse material of generation in the infrastructure constructions such as urban house building and demolishing process, is built
Build dust material of the class refuse material including common brick class, waste and old or discarded coagulation great soil group, mortar class, brick and tile class material and generation
Material.
4. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：The particle diameter that construction refuse regenerated coarse fodder is it to be produced in sorting, broken, screening process between 4.75~26.5mm,
Regeneration fines is building waste of the particle diameter less than 4.75mm.
5. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：It is construction refuse regenerated gather materials should meet following technical requirements,
1) granule content of the coarse materials more than 26.5mm is less than 10% again；
2) granule content of the regeneration fines more than 4.75mm is less than 10%；
3) granule content of the regeneration fines less than 0.075mm is more than 8%；
4) the construction refuse regenerated content of organics that gathers materials is less than 1%；
5) the construction refuse regenerated heavy metal harmful components that can not contain and pollution is produced to underground water, soil of gathering materials.
6. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：Admixture is slag powders, flyash, phosphorus slag powder, silicon ash, cohesive soil, low through what is produced using the building waste containing common brick
Used after intensity groove concrete performance test is qualified, its technical requirements should meet《Cement Concrete in Highway Engineering additive with
Admixture application technology guide》Requirement；
Material is quality when drying.
7. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：Water is running water.
8. it is low strong that a kind of utilization building waste containing common brick for being carried out using low-intensity groove concrete described in claim 1 is produced
Degree groove concrete construction process, it is characterised in that：The implementation of the technique is as follows,
S1, the moisture content for determining construction refuse regenerated coarse fodder；
S2, the moisture content for determining construction refuse regenerated fines；
S3, the water absorption rate and apparent density that determine construction refuse regenerated coarse fodder；
S4, the water absorption rate and apparent density that determine construction refuse regenerated fines, using the arithmetic mean of instantaneous value of result of the test twice as
Measured value；
S5, determine raw material and laboratory's match ratio：
After determining raw material, it follow these steps to carry out the examination of the low-intensity groove concrete using the production of building waste containing common brick
Test room mix-design：
S5.1 determines the preparation strength f of groove concretecu,oWith expected slump T Con trolling index；
Preparation strength fs of the S5.2 according to groove concretecu,oWith actual cement strength fceDetermine its pollinating family progeny W1/C；
S5.3 determines groove concrete sand ratio μ；
S5.4 is according to sand coarse aggregate ratio μ, ratio of mud W1/ C and expected slump T determine the free water consumption W of groove concrete1；
S5.5 is according to pollinating family progeny W1/ C and free water consumption W1, calculate and determine cement consumption C；
S5.6 determines construction refuse regenerated coarse fodder consumption G by absolute its volumetric method in concrete mixing proportion design method, with
And construction refuse regenerated fines consumption S；
S5.7 calculates admixture consumption F according to regenerated aggregate gross mass；
S5.8 calculates additional water consumption W according to construction refuse regenerated aggregate water absorption2；
S5.9 is by free water consumption W1With additional water consumption W2Addition obtains total water consumption W；
S5.10 carries out the trial mix of groove concrete, checks workability, intensity, the durability index of trial mix groove concrete；
The match ratio of S5.11 selections workability, intensity and durable sexual satisfaction design requirement is the final laboratory of groove concrete
Match ratio；
S6, according to laboratory match ratio conversion coordination in works：
(1) actual construction refuse regenerated coarse fodder consumption is calculated：GR=G × (1+a)；
(2) actual construction refuse regenerated fines consumption is calculated：SR=S × (1+b)；
(3) actual admixture consumption is calculated：FR=F × (1+c)；
(4) actual used water amount is calculated：WR=W- (GR-G)-(SR-S)-(FR-F)；
Wherein：GR--- actual construction refuse regenerated coarse fodder consumption, kg/m3；
G --- construction refuse regenerated coarse fodder consumption, kg/m in match ratio3；
SR--- actual construction refuse regenerated fines consumption, kg/m3；
S --- construction refuse regenerated fines consumption, kg/m in match ratio3；
FR--- actual admixture consumption, kg/m3；
F --- admixture consumption in match ratio, kg/m3；
A --- the moisture content of the construction refuse regenerated coarse fodder of actual measurement, %；
B --- the moisture content of the construction refuse regenerated fines of actual measurement, %；
C --- the moisture content of actual measurement admixture, %；
WR--- actual used water amount, kg/m3；
W --- the consumption of match ratio reclaimed water, kg/m3；
S7, load weighted construction refuse regenerated coarse fodder, construction refuse regenerated fines are poured into agitated kettle successively；
S8, add water, stirring 30s or so makes regenerated aggregate be fully contacted with water, then soaks about 3 minutes；
S9, addition cement and admixture, are again stirring for 8~10 minutes, obtain final product the low-intensity using the production of building waste containing common brick
Groove concrete.
9. the low-intensity groove concrete that a kind of utilization building waste containing common brick according to claim 1 is produced, its feature
It is：The construction method of the low-intensity groove concrete produced using building waste containing common brick is as follows：
S1, foundation ditch cleaning：Thoroughly the debris such as empty quarrel, surface dust in removing foundation ditch, ensure without ponding in foundation ditch, and tamp leveling,
The roadbed being compacted to periphery, the cutting of its edge is neat；
S2, Raw Materials Sampling Inspection and stacking：Raw material are inspected by random samples in time after marching into the arena, and rational stacking, and particularly cement will do moistureproof place
Reason；
S3, construction machinery：Preferably use scene directly to mix and stir for rapid rush-repair engineering, 2 people are added using 2 drum mixers
Work small handcart double raise chute, or other similar devices；
S4, compound stirring：Moisture content testing result according to raw material, strictly controls various raw material usages, additional water
By compound reach design the slump be defined, raw material for it is construction refuse regenerated gather materials, admixture；When weighing various raw material,
Various weighing apparatus must keep accurate；Compound uses drum mixer, and is stirred according to above-mentioned flow of mixing and stirring, mixing
Before the construction refuse regenerated fines for luming, admixture should be smashed after mix mix and stir again；The good compound slump of mixing should be accorded with
Design slump value is closed, is not isolated, not bleeding；
S5, compound transport：By the good compound of mixing, manually small handcart or other means of transports are transported to appointed place, and suitable
Chute directly pours into specified location in foundation ditch, pours requirement uninterrupted；
S6, compound are poured：Support, template are checked before pouring compound, the debris, ponding in template are cleaned out；
Template should clog closely knit, template inner side brush releasing agent if any gap；Compound tipping height is not more than 2 meters, will when the discrepancy in elevation is larger
Guiding gutter is set；Compound should use vibrator jolt ramming by thickness, order and direction placement layer by layer after the completion of pouring, apply
Not preferably greater than 2 meters of work thickness, when position is backfilled highly more than 2 meters, using construction in layer method；During construction in layer, bottom is mixed
Close material answer abundant jolt ramming and ensure its do not isolate, not bleeding, then start upper strata construction；When compound has substantially isolation in foundation ditch
When, stirred with instruments such as creepers；Pour the compound in foundation ditch is flattened with scraper plate after finishing, pour height and reach
Stop construction during design height；When ground railway embankment, baffle plate should be set at groove two ends, or with filling earth and stone material
Gunnysack be piled into barricade, prevent the excessive of compound, should ensure that baffle plate or barricade meet supporting construction intensity requirement；Work as temperature
Should stop pouring during less than 5 DEG C；
S7, compound maintenance：After the completion of compound is poured, should be after spreading suitable quantity of water carries out health, or watering after top layer knot is hard
Plastic covering film health, also can earthing health, conditioned time is depending on construction requirement and firm time, it is ensured that more than 1d, health
Period forbids vehicle, pedestrian to pass through；
S8, sealing：When being used as roadbed backfilling material, health can directly carry out other subgrade soils on compound and return after finishing
Fill out, road cushion stemming operation is constructed；When being used as road cushion, after carrying out enveloping treatment on compound that should be after curing
Start roadbase construction, sealing uses spread emulsified asphalt, cement mortar mode；When being used as foundation ditch backfilling material, hard
Enveloping treatment is carried out on compound after change, seal coat structure is 8% rendzinas, and compacting criteria meets former basement process standard,
Sealing construction should be concordant with original ground after finishing；The platform back of the body, culvert back of the body backfill sealing preferably use rendzinas and dirt rubble to backfill, compactness
Not less than 96%；Seal coat thickness is 30cm~60cm.
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