CN101607812B - Compound curing agent of high cement slurry - Google Patents

Compound curing agent of high cement slurry Download PDF

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Publication number
CN101607812B
CN101607812B CN2009101579044A CN200910157904A CN101607812B CN 101607812 B CN101607812 B CN 101607812B CN 2009101579044 A CN2009101579044 A CN 2009101579044A CN 200910157904 A CN200910157904 A CN 200910157904A CN 101607812 B CN101607812 B CN 101607812B
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China
Prior art keywords
curing agent
cement
slurry
mud
waste
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CN2009101579044A
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Chinese (zh)
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CN101607812A (en
Inventor
王军
孙林柱
蔡袁强
丁光亚
杨芳
胡秀青
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温州大学
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Priority to CN2009101579044A priority Critical patent/CN101607812B/en
Publication of CN101607812A publication Critical patent/CN101607812A/en
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Classifications

    • 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
    • C04B28/14Compositions 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 calcium sulfate cements
    • 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

Abstract

The invention relates to a compound type slurry curing agent for conducting curing treatment on waste slurry generated in geotechnical engineering (for example, investigation drilling, cast-in-place pile, anchorage engineering, trenchless construction and the like), as well as the sludge at the bottom of reservoirs, ditches, ponds, pools and the like. In the invention, the compound type slurry curing agent is prepared by adding and mixing fine sand, lime, industrial waste gypsum, fly ash and super absorbent resin in cement curing agent evenly according to a certain proportion. The slurry curing agent greatly improves the curing effect of slurry, reduces the use amount of cement and lowers the cost. Besides, by doping industrial wastes such as waste gypsum, fly ash and the like in cement, the pollution to the environment is abated, the recycle of wastes is promoted and favorable economic and social benefits are available.

Description

A kind of compound curing agent of high cement slurry

Technical field

The present invention relates to a kind of compound curing agent of high cement slurry, be applicable to the waste mud that produces in the geotechnical engineering (as prospecting boring, castinplace pile and anchoring engineering, non-excavating construction etc.), and the solidification treatment of bottom sludge such as reservoir, water channel, the pool, pond, belong to civil construction material technology field.

Background technology

The a large amount of waste muds that produce in the geotechnical engineering construction (as prospecting boring, castinplace pile and anchoring engineering, non-excavating construction etc.), the mainly suspension of forming by clay, sewage, sump oil, drilling cuttings and mud conditioner and the mixed body of colloidal solution, can pollute to environment, bring negative impact to construction.Be embodied in: the waste mud that engineering construction produces is difficult to degraded under state of nature, cause the surrounding area soil compaction, soil salinization, vegetation considerable damage; The waste mud long-term accumulated is penetrated under the face of land water layer or with the excessive inflow rivers of rainwater brook, polluted source directly or indirectly produces harm to animal, plant and human health, as is used as assorted soil outward transport, can cause secondary pollution; In addition, dirty mud sump is idle for a long time, takies valuable land resources.The purpose that waste mud is cured processing is that waste mud is not polluted surrounding environment, slurry (or cream) the shape storage configuration that changes waste mud simultaneously is the solid attitude, make its solid that changes into similar soil or glued become the bigger solid of intensity, on the spot landfill second ploughing or as material of construction.

To the solidification treatment of mud, generally adopt cement, lime etc. at present as solidifying agent.Because Portland cement, lime setting and harden are slow, they had the part sedimentation before will occurring not condensing under the high water-solid ratio situation, and contain more organic substance in the mud usually, these organic substances can hinder the hydration reaction of cement, cause cement that the effective adhesive cohesive soil can not be arranged, so the solidification effect of grout is often very poor even can't carry out.When using lime to solidify, solidification intensity is lower.In addition, adopt Portland cement as the required cement mixed ratio of slurry curing agent about 10%, involve great expense and caused the huge wasting of resources.

The present invention has developed a kind of compound curing agent of high cement slurry by add materials such as fine sand, industrial waste gypsum, lime, flyash and super absorbent resin in Portland cement.This solidifying agent has improved the solidification effect of mud greatly, has reduced cement consumption, has reduced cost.In addition, in cement, mix industrial wastes such as waste gypsum, flyash, reduced environmental pollution, promoted the recycle of waste material, had good economic benefit and social benefit.

Summary of the invention

The purpose of this invention is to provide and a kind ofly can be applied to the high-performance of actual slurry curing engineering, cheap slurry curing formula.This slurry curing formula has mixed industrial wastes such as waste gypsum in cement, reduced environmental pollution, has promoted the recycle of waste material,

Slurry curing formula of the present invention, wherein the cement quality ratio is 23.6%~27.6%, fine sand mass ratio 30.2%~34.2%, lime quality is than 2.7%~3.7%, gypsum quality is than 23.6%~27.6%, flyash mass ratio 11.8%~13.8%, super absorbent resin mass ratio are 0.5%~0.7%.

Compound curing agent of high cement slurry of the present invention, the cement that is adopted are the ordinary Portland cement of label 425.

Compound curing agent of high cement slurry of the present invention, the fine sand that is adopted are the sand of fineness modulus 1.7.

Compound curing agent of high cement slurry of the present invention, the lime that is adopted are dry hydrate, Ca (OH) 2Content is 85%, fineness 300 orders.

Compound curing agent of high cement slurry of the present invention, the gypsum that is adopted are power station desulfurization waste gypsum, wherein: sulphur trioxide>42%, water ratio<10%, particle diameter<200mm.

Compound curing agent of high cement slurry of the present invention is characterized in that: flyash is dry discharge fly ash, SiO2, and the mass fraction of CaO is respectively 65.2%, 4.0%.

Compound curing agent of high cement slurry of the present invention, the super absorbent resin that is adopted is " converging gloomy " board HS series super absorbent resin.

Beneficial effect of the present invention: (1) environment protection: utilize the present invention can reduce of the influence of the waste disposal of the mud that produces in the engineering to surrounding environment.(2) resource regeneration: utilizing the present invention, is the geotechnological preferably material of engineering properties with the depleted treatment of mud, has produced renewable resource.(3) treatment of wastes with processes of wastes against one another: the present invention is primarily aimed at is the handling problem of the high cement slurry that produces in the engineering, is a large amount of wastes that produce in the industry and itself utilizes, has reached the purpose of the treatment of wastes with processes of wastes against one another simultaneously.(4) cheap: part material of the present invention is a waste material in the industry, and product price is cheap.(5) solidification effect is good: the present invention has added flyash isoreactivity composition to improving the intensity of slurry curing body, reduces its perviousness, improves its erosion resistance and has vital role.And super absorbent resin is remarkable to quickening the mud coagulation result.(6) applied range: the present invention can adjust curing agent ratio according to water content of slurry, reaches the purpose of regulating slurry curing body intensity, thereby satisfies various engineering needs such as reclamation, road engineering and dyke building.

This solidifying agent has improved the solidification effect of mud greatly, has reduced cement consumption, has reduced cost, has reduced environmental pollution, has promoted the recycle of waste material, has good economic benefit and social benefit.

Embodiment

Embodiment 1

Adopt mortar testing routine size, specimen size is 70.7mm * 70.7mm * 70.7mm.Treat that solidified mud is certain building site cast-in place pile expense mud, water ratio 200%, density 1.36g/cm 3Inject die trial after solidifying agent and the mud uniform mixing, manual inserting smash, and makes the mud face be higher than die trial 3~5mm, and an end of mentioning die trial vibrates 5~10 times, and the other end of mentioning die trial again vibrates 5~10 times, scrapes plane surface.In 20 ℃ of following maintenance 24h demoulding, put into the standard curing room maintenance behind the test block forming.Surveyed the unconfined compression strength of slurry curing body to the 7 day length of time.The solidifying agent preparation raw material is: the cement that is adopted is the ordinary Portland cement of label 425; The fine sand that is adopted is the sand of fineness modulus 1.7; The lime that is adopted is dry hydrate, Ca (OH) 2Content is 85%, fineness 300 orders; The gypsum that is adopted is a power station desulfurization waste gypsum, wherein: sulphur trioxide>42%, water ratio<10%, particle diameter<200mm; The flyash that is adopted is dry discharge fly ash, SiO2, and the mass fraction of CaO is respectively 65.2%, 4.0%.The super absorbent resin that is adopted is " converging gloomy " board HS series super absorbent resin.

The component prescription that process is joined in the solidifying agent examination sees Table 1~4, and the mud that every assembly side reinforced is 500ml.Various material permissible variations see Table 5 in the process for preparation.

Each composition weight proportioning of process is joined in table 1 slurry curing agent examination

Each composition weight proportioning of process is joined in table 2 slurry curing agent examination

Each composition weight proportioning of process is joined in table 3 slurry curing agent examination

Each composition weight proportioning of process is joined in table 4 slurry curing agent examination

Table 5 curing agent component metering permissible variation

By above each example as seen, only with cement during as solidifying agent, when its volume was 40g, mud was difficult to moulding, can not satisfy movement requirement.For compound solidifying agent, along with flyash mix than increase, intensity increases, the final setting time of mud shortens, but when fly-ash-contained during greater than 10g, along with fly-ash-contained increase, noticeable change does not take place intensity; Along with the adding of super absorbent resin, intensity increases, but when super absorbent resin volume during greater than 0.5g, the intensity raising is not obvious; Along with the adding of super absorbent resin, the final setting time of mud significantly shortens, but when super absorbent resin volume during greater than 1.0g, not obvious to the influence of mud final setting time.

By above test-results as seen, adopt fine sand: 25g, lime: 2.5g, cement: 20g, gypsum: 20g, flyash: 10g, the intensity of the hardener formula of the composite curing agent recipe ratio cement of super absorbent resin: 0.5g: 55g (satisfying the minimum cement mixing content of mud movement requirement) will improve 2 times at (the 7 day length of time), it is about 78% that the mud final setting time shortens, and satisfies the engineering requirements on transport simultaneously and can save construction costs 10%.

Claims (3)

1. compound curing agent of high cement slurry is characterized in that: by cement, fine sand, lime, flyash, gypsum, super absorbent resin with weight ratio 20: 25: 2.5: form at 10: 20: 0.5.
2. compound curing agent of high cement slurry as claimed in claim 1 is characterized in that: cement is the ordinary Portland cement of label 425.
3. compound curing agent of high cement slurry as claimed in claim 1 is characterized in that: fine sand is the sand of fineness modulus 1.7.
CN2009101579044A 2009-07-16 2009-07-16 Compound curing agent of high cement slurry CN101607812B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009101579044A CN101607812B (en) 2009-07-16 2009-07-16 Compound curing agent of high cement slurry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009101579044A CN101607812B (en) 2009-07-16 2009-07-16 Compound curing agent of high cement slurry

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CN101607812A CN101607812A (en) 2009-12-23
CN101607812B true CN101607812B (en) 2011-04-13

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102153255B (en) * 2010-11-25 2012-09-05 广东省基础工程公司 Method for treating constructed residual mud
CN102020407A (en) * 2010-12-27 2011-04-20 河海大学 Method for rapid dehydration of sludge
CN102267797B (en) * 2011-07-25 2013-03-27 中国船舶重工集团公司第七○二研究所 Integral process for ecologically desilting and curing sludge
CN103539432B (en) * 2013-11-01 2015-11-04 甘肃先锋管道制造有限公司 No-dig technique gap dragging construction method
CN103708804B (en) * 2013-12-20 2015-12-09 南京福臻再生资源科技股份有限公司 A kind of slurry curing method
CN103949457A (en) * 2014-04-03 2014-07-30 陈志光 Method for processing waste soil recycled concrete engineering addition material
CN105036681A (en) * 2015-07-23 2015-11-11 柳州联海科技有限公司 Waterproof high-strength concrete and preparing method thereof
CN105293962A (en) * 2015-10-14 2016-02-03 马鞍山十七冶工程科技有限责任公司 Geotechnical engineering waste slurry efficient solidifying agent
CN105557110A (en) * 2015-12-14 2016-05-11 安徽省中日农业环保科技有限公司 Hybrid rice pest and disease prevention planting technology
CN105454033A (en) * 2015-12-14 2016-04-06 安徽省中日农业环保科技有限公司 Planting method of hybrid rice
CN107140925B (en) * 2017-05-23 2020-09-01 上海市建筑科学研究院 Slurry flocculating constituent solidifying agent and application thereof

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