CN105837118B - A kind of environment-friendly type self-repairing flexible closes water-stop curtain and preparation method thereof - Google Patents

A kind of environment-friendly type self-repairing flexible closes water-stop curtain and preparation method thereof Download PDF

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CN105837118B
CN105837118B CN201610205987.XA CN201610205987A CN105837118B CN 105837118 B CN105837118 B CN 105837118B CN 201610205987 A CN201610205987 A CN 201610205987A CN 105837118 B CN105837118 B CN 105837118B
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water
stop curtain
self
repairing flexible
bentonite
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CN105837118A (en
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张琨
王辉
孙金桥
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China Construction Third Engineering Bureau Co Ltd
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China Construction Third Engineering Bureau Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00Use 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
    • C04B14/02Granular materials, e.g. microballoons
    • C04B14/04Silica-rich materials; Silicates
    • C04B14/10Clay
    • C04B14/104Bentonite, e.g. montmorillonite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/06Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08Flue dust, i.e. fly ash
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00051Mortar or concrete mixtures with an unusual low cement content, e.g. for foundations
    • C04B2111/0006Mortar or concrete mixtures with an unusual low cement content, e.g. for foundations for obtaining materials with the consistency of soil
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00224Green materials, e.g. porous green ceramic preforms
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00293Materials impermeable to liquids
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention relates to the realm of building construction more particularly to a kind of self-repairing flexible to close water-stop curtain, and raw material includes water, bentonite, cement, flyash, dispersant, water-reducing and set-retarding admixture, mass ratio 100:(30~60):(3~7):(5~10):(0.5~1):(0.5~1), preparation method are to be according to feeding sequence:Water, cement, flyash, dispersant, retarder, bentonite mix each raw material, you can obtain self-repairing flexible and close water-stop curtain mixture.Gained self-repairing flexible conjunction water-stop curtain water-stagnating effect is good, intensity is adjustable, and the rapid self-heal of water energy is met after dry and cracked, and has many advantages, such as that of low cost, construction is convenient, environmentally protective.

Description

A kind of environment-friendly type self-repairing flexible closes water-stop curtain and preparation method thereof
Technical field
The present invention relates to the realm of building construction more particularly to a kind of environment-friendly type self-repairing flexible to close water-stop curtain and its preparation side Method.
Background technology
Water-stop curtain is at present in excavation to a kind of common method of groundwater treatment, main purpose It is to separate the underground water in the soil body of foundation pit periphery and the hydraulic connection in excavation of foundation pit region, mainly by mixing plant by admixture (cement) is sufficiently stirred with the soil body so that the soil body have it is required it is impervious, every ooze effect.The cement admixture shape used at present Into water-stop curtain it have certain intensity (non-flexible).
But in the special constructional techniques such as open caisson caisson method, not only need using water-stop curtain sealing, but also under building Cutting shoe needs cutting soil during heavy.Therefore, existing water-stop curtain intensity is relatively high, and the sinking of top-out can be caused Very big resistance influences to construct.
Invention content
The technical problems to be solved by the invention are in view of the deficiency of the prior art and provide a kind of environment-friendly type Self-repairing flexible closes water-stop curtain, is deformed under external force with the deformation of the soil body, constantly, does not split, and has self-healing function, While sealing effect is played, reduce building incision resistance, conducive to steadily moving down.
The present invention is solves the problems, such as that used technical solution set forth above is:
A kind of self-repairing flexible closes water-stop curtain, and raw material includes water, bentonite, cement, flyash, dispersant, diminishing and delays Solidifying agent.
By said program, each raw water, bentonite, cement, flyash, dispersant, water-reducing and set-retarding admixture mass ratio are 100:(30~60):(3~7):(5~10):(0.5~1):(0.5~1).
In said program, the dispersant in sodium carbonate, potassium carbonate, soda ash etc. it is one or more in any proportion Mixture.
In said program, the retarder is concrete retarding water-reducing agent, and main component is polyol, high sugar One or more mixtures in any proportion in lignin sulfonic acid, inorganic salts etc..
By said program, the bentonitic mesh number is higher than 200 mesh.
Above-mentioned self-repairing flexible closes the preparation method of water-stop curtain mixture, is according to feeding sequence:Water, cement, flyash, Dispersant, retarder, bentonite mix each raw material according to said ratio, you can obtain self-repairing flexible and close water-stop curtain mix Object.Preferably, during the mixing, stirring may be used, mixing speed is 60~150r/min, and mixing time is 5~8min.
Above-mentioned gained mixture can carry out pumping construction by concrete pump, and then obtain self-repairing flexible and close water-stop curtain.
Compared with prior art, the beneficial effects of the invention are as follows:
Water-stop curtain of the present invention has relatively low compression strength and higher infiltration coefficient, 28 days compression strength Only 0.1~0.3MPa, infiltration coefficient are 1 × 10-6~10 × 10-6cm/s。
Compared with prior art, the beneficial effects of the invention are as follows:
1. jelly plastic and flexible body preservation is in underground for water-stop curtain of the present invention, under external force with the soil body It deforms and deforms, constantly, do not split, and there is self-healing function, by properly allocating bentonite and cement, the ratio of flyash, Even if after water-stop curtain dehydration can be made dry and cracked, the rapid self-heal of water energy is met, and have the effect of conventional common curtain, i.e., it is anti- It oozes, every the effect of oozing.
2nd, intensity of the present invention and anti-shear performance are relatively low, can stand thereon without the basis of depression meeting human body On, intensity is as small as possible, so as in building folding process, building move down by soil body range pre-set and be wider than wall The cleavable water-stop curtain of flexibility of body thickness, cutting shoe in flexible cleavable water-stop curtain can uniform incision, make playing sealing With while, reduce building incision resistance, conducive to steadily moving down.
3rd, the present invention utilizes bentonitic water swellability, as flexible sealing material, and passes through cement, fine coal The intensity of ash adjustment water-stop curtain, formation water-stagnating effect is good, the adjustable cleavable water-stop curtain of flexibility of intensity.
4. the present invention uses few cement, reduce influence of the water-stop curtain to soil, and use industrial residue fine coal Ash has preferable environment protecting;Compared with conventional water-stop curtain, the present invention have it is of low cost, construction it is convenient, environmentally protective The advantages that.
Specific embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention is not It is limited only to the following examples.
Embodiment 1
A kind of self-repairing flexible closes water-stop curtain, and raw material includes water, bentonite, cement, flyash, dispersant, diminishing and delays Solidifying agent, wherein, bentonite fineness is the sodium bentonite of 200 mesh, and cement uses II 42.5 portland cements of P, flyash I Grade flyash, dispersant use industrial sodium carbonate, each material mixture ratio (unit as shown in table 1:kg).
Table 1
Water Bentonite Cement Flyash Sodium carbonate Retardation water reducing agent
1000 500 50 50 7.5 5
Above-mentioned self-repairing flexible closes the preparation method of water-stop curtain mixture, is stirred using horizontal forced stirrer, throws Material sequence is water, cement, flyash, sodium carbonate, slows down condensate agent, bentonite, and blender rotating speed stirs 5min for 90r/min, It can obtain self-repairing flexible and close water-stop curtain mixture mud.
It is preferable that gained self-repairing flexible closes water-stop curtain mixture slip fluidity, can Self-leveling, the working time reaches 3 hours More than;Unit weight is 1.4g/cm3, concrete pump can be used and carry out pumping construction, obtain self-repairing flexible and close water-stop curtain.The sealing Under curtain intensity test is as shown in table 2, and the water-stop curtain has preferable water sealing and seepage resistane performance, and infiltration coefficient reaches within 28 days To 7 × 10-6cm/s。
Table 2
3d 7d 14d 28d 120d
0.04MPa 0.07MPa 0.13MPa 0.21MPa 0.23MPa
Embodiment 2
A kind of self-repairing flexible closes water-stop curtain, and raw material includes water, bentonite, cement, flyash, dispersant, diminishing and delays Solidifying agent, wherein, bentonite fineness is the calcium-base bentonite of 200 mesh, and cement uses portland cement, and flyash is I grade of flyash, Dispersant uses industrial sodium carbonate, each material mixture ratio (unit as shown in table 3:kg).
Table 3
Water Bentonite Cement Flyash Sodium carbonate Retardation water reducing agent
1000 600 30 100 10 5
Above-mentioned self-repairing flexible closes the preparation method of water-stop curtain, is stirred using mortar mixer, feeding sequence is water, Cement, sodium carbonate, slows down condensate agent, bentonite at flyash, and blender rotating speed stirs 8min for 60r/min, you can obtains flexibility Self-healing water-stop curtain mixture mud.
It is preferable that gained self-repairing flexible closes water-stop curtain mixture slip fluidity, can Self-leveling, the working time reaches 4 hours More than;Unit weight is 1.35g/cm3, concrete pump can be used and carry out pumping construction, obtain self-repairing flexible and close water-stop curtain.The sealing Curtain 28d compression strength is 0.15MPa, and the water-stop curtain has preferable water sealing and seepage resistane performance, and infiltration coefficient reaches within 28 days 5.7×10-6cm/s。
Embodiment 3
A kind of self-repairing flexible closes water-stop curtain, and raw material includes water, bentonite, cement, flyash, dispersant, diminishing and delays Solidifying agent, wherein, bentonite fineness is the calcium-base bentonite of 200 mesh, and cement uses portland cement, and flyash is I grade of flyash, Dispersant uses industrial sodium carbonate, each material mixture ratio (unit as shown in table 4:kg).
Table 4
Water Bentonite Cement Flyash Sodium carbonate Retardation water reducing agent
1000 300 70 80 5 10
Above-mentioned self-repairing flexible closes the preparation method of water-stop curtain, is stirred using mortar mixer, feeding sequence is water, Cement, sodium carbonate, slows down condensate agent, bentonite at flyash, and blender rotating speed stirs 7min for 150r/min, you can obtains soft Property self-healing water-stop curtain mixture mud.
It is preferable that gained self-repairing flexible closes water-stop curtain mixture slip fluidity, can Self-leveling, the working time reaches 4 hours Concrete pump can be used above and carry out pumping construction, obtain self-repairing flexible and close water-stop curtain, and the water-stop curtain has preferably Water sealing and seepage resistane performance.
The above is only the preferred embodiment of the present invention, it is noted that those of ordinary skill in the art are come It says, without departing from the concept of the premise of the invention, several modifications and variations can also be made, these belong to the present invention's Protection domain.

Claims (7)

1. a kind of self-repairing flexible closes water-stop curtain, it is characterised in that raw material include water, bentonite, cement, flyash, dispersant, Water-reducing and set-retarding admixture, each raw water, bentonite, cement, flyash, dispersant, water-reducing and set-retarding admixture mass ratio are 100:(30~ 60):(3~7):(5~10):(0.5~1):(0.5~1).
2. a kind of self-repairing flexible according to claim 1 closes water-stop curtain, it is characterised in that the dispersant is sodium carbonate, The mixture of one or both of potassium carbonate in any proportion.
3. a kind of self-repairing flexible according to claim 1 closes water-stop curtain, it is characterised in that the water-reducing and set-retarding admixture is water Mud retardation water reducing agent.
4. a kind of self-repairing flexible according to claim 1 closes water-stop curtain, it is characterised in that the bentonite mesh number is higher than 200 mesh.
5. self-repairing flexible as described in claim 1 closes water-stop curtain, it is characterised in that the flexibility water-stop curtain resistance to compression in 28 days Intensity is 0.1 ~ 0.3MPa, and infiltration coefficient is 1 × 10-6~10×10-6 cm/s。
6. a kind of self-repairing flexible closes the preparation method of water-stop curtain, it is characterised in that according to each raw water, bentonite, cement, powder Coal ash, dispersant, water-reducing and set-retarding admixture mass ratio are 100:(30~60):(3~7):(5~10):(0.5~1):(0.5~1)Stock;So It is according to feeding sequence afterwards:Water, cement, flyash, dispersant, water-reducing and set-retarding admixture, bentonite mix each raw material, you can Water-stop curtain mixture is closed to self-repairing flexible.
7. a kind of self-repairing flexible according to claim 6 closes the preparation method of water-stop curtain, it is characterised in that the mixing Using stirring, mixing speed is 60 ~ 150r/min, and mixing time is 5 ~ 8min.
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CN107216090B (en) * 2017-06-09 2020-02-11 中石化中原建设工程有限公司 Pollution-free grouting treatment method for waste oil and gas pipelines
CN109748548A (en) * 2019-01-04 2019-05-14 北京地矿工程建设有限责任公司 A kind of occlusion water-stop curtain stake and the construction technology with its production occlusion water-stop curtain

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