CN108585673A - A kind of deep foundation pit support steel fibre haydite light aggregate concrete and preparation method thereof - Google Patents
A kind of deep foundation pit support steel fibre haydite light aggregate concrete and preparation method thereof Download PDFInfo
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- CN108585673A CN108585673A CN201810370272.9A CN201810370272A CN108585673A CN 108585673 A CN108585673 A CN 108585673A CN 201810370272 A CN201810370272 A CN 201810370272A CN 108585673 A CN108585673 A CN 108585673A
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
Abstract
A kind of deep foundation pit support steel fibre haydite light aggregate concrete and preparation method thereof, light aggregate concrete are made of the raw material that is matched following weight：180~220 parts of lumnite cement, 140~160 parts of haydite, 180~220 parts of pottery sand, 40~60 parts of rubber grain, 20~30 parts of steel fibre, 14~18 parts of permeability-reducing admixture, 10~13 parts of swelling agent, 70~110 parts of water.Preparation method：Pottery sand, steel fibre are added in blender, dry mixing stirs evenly, and intermediate material is made；Lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent are added in blender and mixed with intermediate material, dry mixing, cooperation is uniform, and siccative is made；It adds water in siccative, at the uniform velocity stirs evenly, the final material of gained is the light aggregate concrete.The present invention is with good performance, light-weight, and early strength is high, and good weatherability, bond performance is good, and anti-permeability performance is good, meets application requirement of the base pit engineering to steel fibre haydite light aggregate concrete.
Description
Technical field
The present invention relates to a kind of light aggregate concrete, specifically a kind of deep foundation pit support steel fibre haydite light-weight aggregate coagulation
Soil belongs to building material technical field.The invention further relates to deep foundation pit support steel fibre haydite light aggregate concretes
Preparation method.
Background technology
Deep-foundation pit engineering gradually develops to fabricated support form now, since prefabricated member is reusable
Prefabricated components, size is difficult to fit like a glove with deep basal pit size after component assembly, at this moment then needs to use steel fibre haydite light-weight aggregate
Concrete protects the non-supporting soil body in foundation pit corner part；There is infiltration situation in deep basal pit assembled support unit junction
When, also leak stopping processing can be carried out with steel fibre haydite light aggregate concrete, can effectively ensure that deep basal pit safety.
Currently, concrete is there is also early strength is low in the market, weatherability is poor, and weight is not light enough, bonds force difference, impervious
The problems such as poor performance, it is difficult to meet deep foundation pit support to concrete performance index requirement.
Inventor retrieves following Patents documents：CN104926239A discloses a kind of plastic-steel for mixing waste rubber powder
Properties of fiber reinforced lightweight aggregate concrete and preparation method are prepared per cubic meter of concrete, and the quality percentage cooperation of following raw materials is included
Than：Cement 14%~25%, plastic-steel fabric 0.1%~0.6%, rubber powder 0.03~1.75%, fine sand 22%~45%, fine coal
Grey haydite 27%~50%, net duty of water 6%~12.9%, water-reducing agent 0%~0.03%.CN102491691A discloses one kind
Foam ceramsite concrete, it contains cement, sand, haydite, water, granular polystyrene, steel fibre, foaming agent and additive, and additive is
It is that material internal can be made to generate foam and be formed and closed that concrete, which often uses the one or more of additive and mineral additive, foaming agent,
Hole or the substance for joining pore structure material；Its manufacturing method is will to be sent into blender after cement, flyash, sand, water, foaming agent metering
Mix cement slurry is stirred into, starching mix cement slurry by foaming agent is made foam slurry, and granular polystyrene, steel fibre and pottery is added
Moulding after grain stirring, conserves after one-pass molding.
The above technology is functional for how to make deep foundation pit support steel fibre haydite light aggregate concrete accomplish,
Light-weight, early strength is high, and good weatherability, anti-permeability performance is good, disclosure satisfy that base pit engineering to steel fibre haydite light-weight aggregate coagulation
The application requirement of soil, does not provide specific guidance program.
Invention content
Technical problem to be solved by the present invention lies in provide a kind of deep foundation pit support steel fibre haydite light-weight aggregate coagulation
Soil, it is with good performance, light-weight, and early strength is high, and good weatherability, bond performance is good, and anti-permeability performance is good, disclosure satisfy that
Application requirement of the base pit engineering to steel fibre haydite light aggregate concrete.
For this purpose, another technical problem to be solved by this invention is, a kind of deep foundation pit support is provided and is made pottery with steel fibre
The preparation method of grain light aggregate concrete.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of deep foundation pit support steel fibre haydite light aggregate concrete, its technical solution is that it is matched by following weight
Made of the raw material of ratio：180~220 parts of lumnite cement, 140~160 parts of haydite, 180~220 parts of pottery sand, rubber
40~60 parts of grain, 20~30 parts of steel fibre, 14~18 parts of permeability-reducing admixture, 10~13 parts of swelling agent (expansive agent for cement slurry), water (clear water)
70~110 parts.
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, pottery sand, steel fibre are added in blender, dry mixing stirs evenly, and intermediate material is made；(2) will
Lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by intermediate material
Mixing, dry mixing coordinate uniformly (uniformly mixed), siccative are made；(3) it adds water in the siccative obtained by step (2), at the uniform velocity stirs
8~10min is mixed, is stirred evenly, stops stirring, the final material of gained is that deep foundation pit support steel fibre haydite light-weight aggregate is mixed
Solidifying soil.
In above-mentioned technical proposal, preferred technical solution can be that the grain size of the haydite is preferably 5~10mm, pottery
Grain is preferably that one or more of haydites of book structure, clay haydite, coal gangue haydite, lytag are formed with arbitrary proportion
Composition (mixture).The grain size of above-mentioned rubber grain is preferably 1~3mm, rubber grain preferably by scrap rubber, sneakers bottom,
One or more of cable skin, rubber leftover pieces rubber raw materials process.The grain size of above-mentioned pottery sand be X, 0<X≤
5mm；Pottery sand is preferably one or more of shale pottery, clay pottery sand, Coal gangue pottery sand, flyash ceramic sand with arbitrary proportion
The composition (mixture) of formation.Above-mentioned steel fibre is preferably that length is the steel fibres that 10~20mm, diameter are 0.1~0.2mm
Silk.Dry mixing (time is preferably) 5~10min in above-mentioned step (1), (time is best for dry mixing in above-mentioned step (2)
For) 5~10min, (time is preferably) 8~10min is at the uniform velocity stirred in above-mentioned step (3).
In above-mentioned technical proposal, preferred technical solution can be that the deep foundation pit support steel fibre haydite gently collects
Material concrete is preferably made of the raw material that is matched following weight：200 parts of lumnite cement, 150 parts of haydite, pottery sand
200 parts, 50 parts of rubber grain, 25 parts of steel fibre, 16 parts of permeability-reducing admixture, 12 parts of swelling agent, 90 parts of water；Wherein, the fast hard silicic acid
Salt cement is 42.5 lumnite cements；The grain size of the haydite is 7~8mm, and haydite is haydites of book structure, clay haydite, coal
The combination (composition, mixture) of four kinds of spoil haydite, lytag raw materials, haydites of book structure, clay haydite, Coal gangue pottery
Grain, lytag weight ratio be 1: 2: 0.5: 0.8；The grain size of the pottery sand is 2~3mm, and pottery sand is shale pottery, glues
The combination (composition, mixture) of native pottery sand, four kinds of Coal gangue pottery sand, flyash ceramic sand raw materials, shale pottery, clay pottery sand,
Coal gangue pottery sand, flyash ceramic sand weight ratio be 1: 0.5: 0.5: 2；The grain size of rubber grain is 1.5~2mm, rubber
Grain is from scrap rubber, the rubber raw materials processing of two kinds of sneakers bottom；The steel fibre is that be 15mm, diameter be length
The steel fiber of 0.16mm.
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, by pottery sand, steel fibre be added blender in, dry mixing 5min and stir evenly, intermediate material is made；
(2) by lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by
Between material mix, dry mixing 5min and coordinate uniform (uniformly mixed), siccative is made；(3) it adds water to dry obtained by step (2)
It in material, at the uniform velocity stirs 8min and stirs evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite
Light aggregate concrete.
In above-mentioned technical proposal, the preferred technical solution may also be that the deep foundation pit support is light with steel fibre haydite
Aggregate concrete is preferably made of the raw material that is matched following weight：220 parts of lumnite cement, 140 parts of haydite, pottery sand
220 parts, 60 parts of rubber grain, 20 parts of steel fibre, 18 parts of permeability-reducing admixture, 13 parts of swelling agent (expansive agent for cement slurry), 110 parts of water；Wherein,
The lumnite cement is 42.5 lumnite cements；The grain size of above-mentioned haydite is 5mm, and haydite is haydites of book structure, sticks
The combination (composition, mixture) of two kinds of raw materials of native haydite, haydites of book structure, clay haydite weight ratio be 1: 0.6；The pottery
The grain size of sand is 1mm, and pottery sand is combination (composition, the mixing of three kinds of shale pottery, clay pottery sand, Coal gangue pottery sand raw materials
Object), shale pottery, clay pottery sand, Coal gangue pottery sand weight ratio be 1: 0.4: 0.7；The grain size of the rubber grain is
3mm, from rubber grain is produced by scrap rubber Raw material processing；The steel fibre be length be 13mm, diameter be 0.1mm steel it is fine
Tie up silk；
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, by pottery sand, steel fibre be added blender in, dry mixing 6min and stir evenly, intermediate material is made；
(2) by lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by
Between material mix, dry mixing 5min and coordinate uniform (uniformly mixed), siccative is made；(3) it adds water to dry obtained by step (2)
It in material, at the uniform velocity stirs 9min and stirs evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite
Light aggregate concrete.
In above-mentioned technical proposal, the preferred technical solution may also be that the deep foundation pit support is light with steel fibre haydite
Aggregate concrete is preferably made of the raw material that is matched following weight：180 parts of lumnite cement, 160 parts of haydite, pottery sand
180 parts, 40 parts of rubber grain, 28 parts of steel fibre, 15 parts of permeability-reducing admixture, 11 parts of swelling agent (expansive agent for cement slurry), 80 parts of water (clear water)；
Wherein, the lumnite cement is 42.5 lumnite cements；The grain size of the haydite is 10mm, and haydite is gangue
The combination (composition, mixture) of two kinds of haydite, lytag raw materials, coal gangue haydite, lytag weight ratio
It is 1: 0.8；The grain size of the pottery sand be 3mm, pottery sand be shale pottery, three kinds of Coal gangue pottery sand, flyash ceramic sand raw materials group
Close (composition, mixture), shale pottery, Coal gangue pottery sand, flyash ceramic sand weight ratio be 1: 0.5: 0.8；The rubber
The grain size of glue particle is 1mm, from rubber grain is produced by scrap rubber Raw material processing；The steel fibre be length be 17mm, it is straight
Diameter is the steel fiber of 0.2mm.
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, by pottery sand, steel fibre be added blender in, dry mixing 8min and stir evenly, intermediate material is made；
(2) by lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by
Between material mix, dry mixing 7min and coordinate uniform (uniformly mixed), siccative is made；(3) it adds water to dry obtained by step (2)
It in material, at the uniform velocity stirs 10min and stirs evenly, stop stirring, the final material of gained is that deep foundation pit support is made pottery with steel fibre
Grain light aggregate concrete.
The deep foundation pit support steel fibre haydite light aggregate concrete of the present invention has reached the good impact of performance, performance
Index is referring to the subsequent table of this specification 1.The deep foundation pit support of the present invention has early stage with steel fibre haydite light aggregate concrete
Intensity is high, unit weight is light, not easy to crack by difference variation, self-constriction is small, freeze-thaw resistance is good, bond performance is good, anti-permeability performance is good, shape
The features such as at Self-curing can be formed after concrete, it is energy conservation and environmental protection material, is easy to be extended and applied.
Compared with prior art, the present invention has following advantageous effect:The present invention provides a kind of deep foundation pit support use
Steel fibre haydite light aggregate concrete, with light-weight, early strength is high, good weatherability, bond performance are good, anti-permeability performance is (anti-
Ooze performance) it is good the features such as, Ju Ti Qing Condition are as follows:(1) steel fibre haydite light aggregate concrete of the invention, with fast hardening portland water
Mud, haydite, pottery sand and water are main component, and by the way that the auxiliary elements such as rubber grain, steel fibre, permeability-reducing admixture, swelling agent are added,
It is aided with the techniques such as mixing, ordinary pressure curing again so that the steel fibre haydite light aggregate concrete of preparation has light-weight, intensity
The features such as height, good weatherability, bond performance are good, anti-permeability performance (barrier performance) is good, and environmental friendliness and no harm, disclosure satisfy that deep basal pit
The application requirement of engineering concrete, compared with having relevant light aggregate concrete, manufacturing cost of the invention all reduces
20% or more.The present invention has a good application prospect.(2) steel fibre haydite light aggregate concrete preparation process letter of the invention
Single, equipment requirement is low, is suitable for industrialization large-scale production.
That in conclusion the present invention solves concrete currently on the market, there is early strengths is low, weatherability is poor, weight not
It is enough light, bond force difference, the problems such as anti-permeability performance is poor, meet deep foundation pit support to concrete performance index requirement.
Specific implementation mode
To keep the goal of the invention, technical solution and advantage of the present invention clearer, below in conjunction with embodiment to the present invention
Technical solution carry out clear, complete description.Obviously, described embodiments are some of the embodiments of the present invention, Er Feiquan
Portion's embodiment.Based on the embodiment in invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1：Deep foundation pit support of the present invention with steel fibre haydite light aggregate concrete is matched by following weight
Made of the raw material of ratio：200 parts of lumnite cement, 150 parts of haydite, 200 parts of pottery sand, 50 parts of rubber grain, steel fibre 25
Part, 16 parts of permeability-reducing admixture, 12 parts of swelling agent, 90 parts of water；Wherein, the lumnite cement is 42.5 lumnite cements；
The grain size of the haydite is 7~8mm, and haydite is four kinds of haydites of book structure, clay haydite, coal gangue haydite, lytag raw materials
Combination (composition, mixture), haydites of book structure, clay haydite, coal gangue haydite, lytag weight ratio be 1: 2:
0.5∶0.8；The grain size of the pottery sand is 2~3mm, and pottery sand is shale pottery, clay pottery sand, Coal gangue pottery sand, flyash ceramic sand
The combination (composition, mixture) of four kinds of raw materials, shale pottery, clay pottery sand, Coal gangue pottery sand, the weight of flyash ceramic sand it
Than being 1: 0.5: 0.5: 2；The grain size of rubber grain is 1.5~2mm, and rubber grain is by scrap rubber, two kinds of sneakers bottom rubber original
Material processing；The steel fibre is that length is the steel fibers that 15mm, diameter are 0.16mm.
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, by pottery sand, steel fibre be added blender in, dry mixing 5min and stir evenly, intermediate material is made；
(2) by lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by
Between material mix, dry mixing 5min and coordinate uniform (uniformly mixed), siccative is made；(3) it adds water to dry obtained by step (2)
It in material, at the uniform velocity stirs 8min and stirs evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite
Light aggregate concrete.Above-mentioned permeability-reducing admixture, swelling agent are commercial goods, and it is that HEA cracking resistances are anti-that specific model, which may be used, in permeability-reducing admixture
Penetration enhancer, it is UEA cement expansive materials (UEA swelling agents) that specific model, which may be used, in swelling agent.
Embodiment 2：Deep foundation pit support of the present invention with steel fibre haydite light aggregate concrete is matched by following weight
Made of the raw material of ratio：220 parts of lumnite cement, 140 parts of haydite, 220 parts of pottery sand, 60 parts of rubber grain, steel fibre 20
Part, 18 parts of permeability-reducing admixture, 13 parts of swelling agent (expansive agent for cement slurry), 110 parts of water；Wherein, the lumnite cement is 42.5 fast
Hardening portland cement；The grain size of above-mentioned haydite is 5mm, and haydite is the combination (combination of two kinds of haydites of book structure, clay haydite raw materials
Object, mixture), haydites of book structure, clay haydite weight ratio be 1: 0.6；The grain size of the pottery sand is 1mm, and pottery sand is shale
The combination (composition, mixture) of pottery sand, three kinds of clay pottery sand, Coal gangue pottery sand raw materials, shale pottery, clay pottery sand, bastard coal
The weight ratio of stone pottery sand is 1: 0.4: 0.7；The grain size of the rubber grain is 3mm, and rubber grain is by scrap rubber Raw material processing
Production；The steel fibre is that length is the steel fibers that 13mm, diameter are 0.1mm.
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, by pottery sand, steel fibre be added blender in, dry mixing 6min and stir evenly, intermediate material is made；
(2) by lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by
Between material mix, dry mixing 5min and coordinate uniform (uniformly mixed), siccative is made；(3) it adds water to dry obtained by step (2)
It in material, at the uniform velocity stirs 9min and stirs evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite
Light aggregate concrete.
Embodiment 3：Deep foundation pit support of the present invention with steel fibre haydite light aggregate concrete is matched by following weight
Made of the raw material of ratio：180 parts of lumnite cement, 160 parts of haydite, 180 parts of pottery sand, 40 parts of rubber grain, steel fibre 28
Part, 15 parts of permeability-reducing admixture, 11 parts of swelling agent (expansive agent for cement slurry), 80 parts of water (clear water)；Wherein, the lumnite cement is
42.5 lumnite cements；The grain size of the haydite is 10mm, and haydite is two kinds of coal gangue haydite, lytag raw materials
Combine (composition, mixture), coal gangue haydite, lytag weight ratio be 1: 0.8；The grain size of the pottery sand is
3mm, pottery sand are the combination (composition, mixture) of shale pottery, three kinds of Coal gangue pottery sand, flyash ceramic sand raw materials, shale pottery
Sand, Coal gangue pottery sand, flyash ceramic sand weight ratio be 1: 0.5: 0.8；The grain size of the rubber grain is 1mm, rubber
From grain is produced by scrap rubber Raw material processing；The steel fibre is that length is the steel fibers that 17mm, diameter are 0.2mm.
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：
(1) in parts by weight, by pottery sand, steel fibre be added blender in, dry mixing 8min and stir evenly, intermediate material is made；
(2) by lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by
Between material mix, dry mixing 7min and coordinate uniform (uniformly mixed), siccative is made；(3) it adds water to dry obtained by step (2)
It in material, at the uniform velocity stirs 10min and stirs evenly, stop stirring, the final material of gained is that deep foundation pit support is made pottery with steel fibre
Grain light aggregate concrete.
It is the test portion of the present invention below：The deep foundation pit support steel fibre haydite light aggregate concrete of the present invention reaches
The good impact of performance, for performance indicator referring to table 1, table 1 is the above various embodiments performance indicator.
Compared with prior art, the present invention has following advantageous effect:The present invention provides a kind of deep foundation pit support use
Steel fibre haydite light aggregate concrete has light-weight, early strength is high, good weatherability, bond performance are good, anti-permeability performance is good etc.
Feature, Ju Ti Qing Condition are as follows:(1) steel fibre haydite light aggregate concrete of the invention, with lumnite cement, haydite, pottery
Sand and water are main component, and by auxiliary elements such as addition rubber grain, steel fibre, permeability-reducing admixture, swelling agents, then are aided with mixing
The techniques such as stirring, ordinary pressure curing so that the steel fibre haydite light aggregate concrete of preparation is with light-weight, intensity is high, weatherability
Well, the features such as bond performance is good, anti-permeability performance is good, and environmental friendliness and no harm, disclosure satisfy that the application of deep-foundation pit engineering concrete is wanted
It asks, compared with having relevant light aggregate concrete, manufacturing cost of the invention all reduces 20% or more.The present invention has good
Good application prospect.(2) steel fibre haydite light aggregate concrete preparation process of the invention is simple, and equipment requirement is low, is suitable for
Industrialization large-scale production.
That in conclusion the present invention solves concrete currently on the market, there is early strengths is low, weatherability is poor, weight not
It is enough light, bond force difference, the problems such as anti-permeability performance is poor, meet deep foundation pit support to concrete performance index requirement.
1 each embodiment performance indicator of table
Compared with the technology disclosed in CN104926239A in background technology, proportioning of the invention and component are different,
The present invention can be used for deep foundation pit support, and the technology disclosed in CN104926239A cannot be used for deep foundation pit support, and the two solves
The technical issues of it is different.The present invention has the characteristics that early strength is high, anti-permeability performance is good, can fully meet soil mass of foundation pit supporting
Or the requirement of foundation pit infiltration leak stopping, and the technology disclosed in CN104926239A has no this feature, is also unable to reach soil mass of foundation pit
Supporting, the requirement of impervious leakage-stopping.
Claims (10)
1. a kind of deep foundation pit support steel fibre haydite light aggregate concrete, it is characterised in that it is the original matched by following weight
Made of material：180~220 parts of lumnite cement, 140~160 parts of haydite, 180~220 parts of pottery sand, rubber grain 40~
60 parts, 20~30 parts of steel fibre, 14~18 parts of permeability-reducing admixture, 10~13 parts of swelling agent, 70~110 parts of water.
2. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that above-mentioned pottery
The grain size of grain is 5~10mm, and haydite is one or more of haydites of book structure, clay haydite, coal gangue haydite, lytag
The composition formed with arbitrary proportion.
3. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that above-mentioned rubber
The grain size of glue particle is 1~3mm, and rubber grain is by one kind in scrap rubber, sneakers bottom, cable skin, rubber leftover pieces or several
Kind rubber raw materials processing.
4. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that above-mentioned pottery
The grain size of sand be X, 0<X≤5mm；Pottery sand be shale pottery, clay pottery sand, Coal gangue pottery sand, one kind in flyash ceramic sand or
Several compositions formed with arbitrary proportion.
5. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that above-mentioned steel
Fiber is that length is the steel fibers that 10~20mm, diameter are 0.1~0.2mm.
6. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that it be by
Made of the raw material of following weight proportioning：200 parts of lumnite cement, 150 parts of haydite, 200 parts of pottery sand, rubber grain 50
Part, 25 parts of steel fibre, 16 parts of permeability-reducing admixture, 12 parts of swelling agent, 90 parts of water；Wherein, the lumnite cement is 42.5 fast hard
Portland cement；The grain size of the haydite is 7~8mm, and haydite is haydites of book structure, clay haydite, coal gangue haydite, flyash ceramic
Grain four kinds of raw materials combination, haydites of book structure, clay haydite, coal gangue haydite, lytag weight ratio be 1: 2: 0.5:
0.8；The grain size of the pottery sand is 2~3mm, and pottery sand is shale pottery, clay pottery sand, Coal gangue pottery sand, four kinds of flyash ceramic sand
The combination of raw material, shale pottery, clay pottery sand, Coal gangue pottery sand, flyash ceramic sand weight ratio be 1: 0.5: 0.5: 2；Rubber
The grain size of glue particle is 1.5~2mm, and rubber grain is from scrap rubber, the rubber raw materials processing of two kinds of sneakers bottom；It is described
Steel fibre is that length is the steel fibers that 15mm, diameter are 0.16mm；
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：(1) it presses
According to parts by weight meter, pottery sand, steel fibre are added in blender, dry mixing 5min and stir evenly, intermediate material is made；(2) will
Lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by intermediate material
Mixing, dry mixing 5min and coordinate uniformly, siccative is made；(3) it adds water in the siccative obtained by step (2), at the uniform velocity stirs
8min and stir evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite light aggregate concrete.
7. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that it be by
Made of the raw material of following weight proportioning：220 parts of lumnite cement, 140 parts of haydite, 220 parts of pottery sand, rubber grain 60
Part, 20 parts of steel fibre, 18 parts of permeability-reducing admixture, 13 parts of swelling agent, 110 parts of water；Wherein, the lumnite cement is 42.5 fast hard
Portland cement；The grain size of above-mentioned haydite is 5mm, and haydite is the combination of two kinds of haydites of book structure, clay haydite raw materials, shale pottery
Grain, clay haydite weight ratio be 1: 0.6；The grain size of the pottery sand is 1mm, and pottery sand is shale pottery, clay pottery sand, bastard coal
The combination of three kinds of raw materials of stone pottery sand, shale pottery, clay pottery sand, Coal gangue pottery sand weight ratio be 1: 0.4: 0.7；The rubber
The grain size of glue particle is 3mm, from rubber grain is produced by scrap rubber Raw material processing；The steel fibre be length be 13mm, it is straight
Diameter is the steel fiber of 0.1mm；
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：(1) it presses
According to parts by weight meter, pottery sand, steel fibre are added in blender, dry mixing 6min and stir evenly, intermediate material is made；(2) will
Lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by intermediate material
Mixing, dry mixing 5min and coordinate uniformly, siccative is made；(3) it adds water in the siccative obtained by step (2), at the uniform velocity stirs
9min and stir evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite light aggregate concrete.
8. deep foundation pit support according to claim 1 steel fibre haydite light aggregate concrete, it is characterised in that it be by
Made of the raw material of following weight proportioning：180 parts of lumnite cement, 160 parts of haydite, 180 parts of pottery sand, rubber grain 40
Part, 28 parts of steel fibre, 15 parts of permeability-reducing admixture, 11 parts of swelling agent, 80 parts of water；Wherein, the lumnite cement is 42.5 fast hard
Portland cement；The grain size of the haydite is 10mm, and haydite is the combination of two kinds of coal gangue haydite, lytag raw materials, coal
Spoil haydite, lytag weight ratio be 1: 0.8；The grain size of the pottery sand is 3mm, and pottery sand is shale pottery, bastard coal
The combination of three kinds of stone pottery sand, flyash ceramic sand raw materials, shale pottery, Coal gangue pottery sand, flyash ceramic sand weight ratio be 1:
0.5∶0.8；The grain size of the rubber grain is 1mm, from rubber grain is produced by scrap rubber Raw material processing；The steel fibre is
It is the steel fiber of 0.2mm that length, which is 17mm, diameter,；
The deep foundation pit support is comprised the technical steps that with the preparation method of steel fibre haydite light aggregate concrete：(1) it presses
According to parts by weight meter, pottery sand, steel fibre are added in blender, dry mixing 8min and stir evenly, intermediate material is made；(2) will
Lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent be added blender in and with step (1) obtained by intermediate material
Mixing, dry mixing 7min and coordinate uniformly, siccative is made；(3) it adds water in the siccative obtained by step (2), at the uniform velocity stirs
10min and stir evenly, stop stirring, the final material of gained is deep foundation pit support steel fibre haydite light-weight aggregate coagulation
Soil.
9. a kind of deep foundation pit support described in claim 1 preparation method of steel fibre haydite light aggregate concrete, feature
It is that it is comprised the technical steps that：(1) in parts by weight, pottery sand, steel fibre are added in blender, dry mixing, stirring
Uniformly, intermediate material is made；(2) lumnite cement, haydite, rubber grain, permeability-reducing admixture, swelling agent are added in blender
And mixed with intermediate material obtained by step (1), dry mixing, cooperation is uniform, and siccative is made；(3) it adds water to obtained by step (2)
In siccative, 8~10min is at the uniform velocity stirred, is stirred evenly, stops stirring, the final material of gained is that deep foundation pit support steel is fine
Tie up haydite light aggregate concrete.
10. the deep foundation pit support according to claim 9 preparation method of steel fibre haydite light aggregate concrete, feature
It is 5~10min of dry mixing in above-mentioned step (1), 5~10min of dry mixing in above-mentioned step (2) is even in above-mentioned step (3)
8~10min of speed stirring.
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Application publication date: 20180928 |