CN106116416A - A kind of preparation method of navigation channel, entrance of Changjiang River dredging silt sand scratch coat Gypsum Fibrosum - Google Patents

A kind of preparation method of navigation channel, entrance of Changjiang River dredging silt sand scratch coat Gypsum Fibrosum Download PDF

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Publication number
CN106116416A
CN106116416A CN201610502798.9A CN201610502798A CN106116416A CN 106116416 A CN106116416 A CN 106116416A CN 201610502798 A CN201610502798 A CN 201610502798A CN 106116416 A CN106116416 A CN 106116416A
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CN
China
Prior art keywords
dredging silt
entrance
gypsum fibrosum
silt sand
navigation channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610502798.9A
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Chinese (zh)
Inventor
谈晓青
陈宁
叶蓓红
赵立群
王琼
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Shanghai Building Science Research Institute Group Co Ltd
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Shanghai Building Science Research Institute Group Co Ltd
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Publication date
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Priority to CN201610502798.9A priority Critical patent/CN106116416A/en
Publication of CN106116416A publication Critical patent/CN106116416A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C04B28/14—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 calcium sulfate cements
    • C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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
    • C04B18/0436—Dredged harbour or river sludge
    • 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
    • C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
    • 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

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

Abstract

The invention discloses navigation channel, a kind of entrance of Changjiang River dredging silt sand and prepare the preparation method of scratch coat Gypsum Fibrosum, comprise the following steps: (1) accurately weighs the material of following weight ratio and forms: means of flue gas desulfurization of power plant plaster of Paris 30 ~ 50 parts, 50 ~ 70 parts of dredging silt sand, retarder 0.15 ~ 0.25 part, cellulose ether 0.10 ~ 0.4 part, starch ether 0.05 part；(2) adding in container by above-mentioned substance, add 26 ~ 50 parts of water, stirring at normal temperature is uniformly made.The present invention has and conventional base plastering gupsum same performance, and under same bulk density, intensity does not has decline, and its long-term shrinkage value meets life requirement.Owing to dredging silt sand is only the 1/5 of common fluvial sand, therefore product price is the scratch coat Gypsum Fibrosum mixing common fluvial sand about 80%, cost performance is higher.

Description

A kind of preparation method of navigation channel, entrance of Changjiang River dredging silt sand scratch coat Gypsum Fibrosum
Technical field
The invention belongs to mortar for building, navigation channel, a kind of entrance of Changjiang River dredging silt sand scratch coat Gypsum Fibrosum Preparation method.
Background technology
Dredging silt sand is to ensure that a large amount of mud sand of the unimpeded required dredging in navigation channel.Entrance of Changjiang River sea access is as Shanghai City and the life line of delta, entrance of Changjiang River economic development, be the important infrastructure in international navigational route center, Shanghai, and its depth of water is over the ground Very important restrictive function is played in district's economic development.According to statistics, the Changjiang river year seaward waterway 924,000,000,000 m3, for outstanding sand in defeated shifting During formed mud layer of sand, need to be with annual 12000000 m3Dredging side's amount can keep the depth of water of navigation channel 7.0m, every year will Produce a large amount of dredging silt sand.And along with harbor approach construction constantly develops to maximization, deep water direction, dredging amount is in year by year Increase trend.Navigation channel, entrance of Changjiang River dredging silt sand faces the most urgent disposal pressure.
Developed country is the most relatively broad in the research of dredging silt sand field of comprehensive utilization, simply blows period from big construction Fill out epeirogenetic, soil modification and ocean dumping, gradually to recycling, the variation such as airport engineering, construction material, become more meticulous industry Direction is developed.China's dredging silt sand recycling mode is the most single, the most still makes road for hydraulic reclamation.Therefore, dredging is carried out Mud sand comprehensive utilization of resources technology, it is achieved it is future development that the variation of dredging silt sand, environmental protection and functionalization utilize Common recognition.
Research dredging silt green emerald color building material technique, is to open up the favourable way that dredging silt sand utilizes in construction material Footpath.By Optimal Mix Design and additive agent modified technology, by dredging silt sand replacing whole tradition fluvial sand, prepare bottom and smear Ash Gypsum Fibrosum, is applied to the coat of plaster of architecture indoor body of wall, ceiling, can optimize Building Indoor Environment, improve the building suitability, reduce Material cost, a large amount of dredging silt sand of the most also can dissolving, is to realize the dredging silt sand environmental protection in green building material field, merit The break-through point that energyization utilizes.
Summary of the invention
It is an object of the present invention to provide and a kind of can mix the scratch coat Gypsum Fibrosum of navigation channel, entrance of Changjiang River dredging silt sand by vast scale Preparation method, its prepared scratch coat Gypsum Fibrosum has conventional base plastering gupsum over-all properties, and material cost reduces.
The object of the invention is realized in:
Navigation channel, a kind of entrance of Changjiang River dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, comprises the following steps:
(1) material accurately weighing following weight ratio forms:
Means of flue gas desulfurization of power plant plaster of Paris 30 ~ 50 parts, 50 ~ 70 parts of dredging silt sand, retarder 0.15 ~ 0.25 part, cellulose ether 0.10 ~ 0.4 part, starch ether 0.05 part；
(2) adding in container by above-mentioned substance, add 26 ~ 50 parts of water, stirring at normal temperature is uniformly made.
In described means of flue gas desulfurization of power plant plaster of Paris, half aqueous phase content is more than 85%, and remaining two aqueous phase content are less than 4%；
Described dredging silt sand is from navigation channel, entrance of Changjiang River dredged mud, and radiological measuring is qualified, does not does grain composition and clay content Requirement；
Described retarder is the five sodium-salt Na of diethylene-triamine pentaacetic acid5DTPA, its retarding effect is notable and to intensity effect Little；
Described cellulose ether is ethoxyl methyl cellulose ether (MHEC) or hydroxypropyl methyl cellulose ether (MHPC), viscosity model Enclose: 10000 ~ 30000cps.After high clay content dredging silt sand mixes, mortar water consumption dramatically increases, for ensureing that slurry is good Water-retaining property and the higher adhesion strength of hardenite, need to mix cellulose ether.
Described starch ether is carboxymethyl starch ether (CMS).Mix starch ether and can improve the application property of mortar, such as anti-sag Property, plasticity etc., and the water-retaining property of mortar with cellulose ether collaborative work, can be improved further
Product of the present invention is the scratch coat Gypsum Fibrosum that a kind of vast scale mixes navigation channel, entrance of Changjiang River dredging silt sand, for architecture indoor Body of wall, the coat of plaster of ceiling.The feature of product of the present invention is: 1) relaxes dredging silt sand index request, dissolves for large dosage and carry For possible.Modified owing to having carried out Optimal Mix Design and product, therefore to the clay content of the dredging silt sand mixed, Grade the performance indications such as is joined and can be not required；2) can mix by vast scale, replacing whole tradition fluvial sand.Pass through Optimal Mix Design And modification technology, can make dredging silt sand 100% substitute tradition fluvial sand for scratch coat Gypsum Fibrosum, its volume up to 50% ~ 70%, Realize large dosage to dissolve, alleviate and dispose pressure；3) product price is low, and cost performance is high.Owing to dredging silt sand is only common fluvial sand 1/5, therefore product price is the scratch coat Gypsum Fibrosum mixing common fluvial sand about 80%, cost performance is higher.4) architecture indoor is improved Comfort level.Product adjustable air humidity, optimizes Building Indoor Environment, improves the building suitability.
The present invention is compared with domestic and international existing like product, and its creativeness is following:
1) navigation channel, entrance of Changjiang River dredging silt sand is prepared scratch coat Gypsum Fibrosum by domestic initiation.The present invention is optimized by mix-design And modification technology, navigation channel, entrance of Changjiang River dredging silt sand is applied to scratch coat Gypsum Fibrosum, Building Indoor Environment can be optimized, improve and build Build the suitability, reduce material cost, a large amount of dredging silt sand of the most also can dissolving, it is achieved dredging silt sand is in green building material field Environmental protection, functionalized application, belong to domestic initiation；
2) relax dredging silt sand index request, grain composition, clay content can be not required.Dredging silt sand is along with residing position Putting difference, its performance difference is very big.It is that main dredging silt sand exists that grain composition is minimum, clay content is big etc. and asks with flour sand and mud Topic, is generally unsuitable for the preparation of scratch coat Gypsum Fibrosum.This product breaks through this technical bottleneck by modification technology, to dredging silt The grain composition of sand, clay content are not required, and are applied to scratch coat Gypsum Fibrosum for its large dosage and provide possible；
3) realize dredging silt sand large dosage to dissolve, alleviate and dispose pressure.By Optimal Mix Design and modification technology, can make Dredging silt sand 100% substitute tradition fluvial sand for scratch coat Gypsum Fibrosum, its volume is up to 50% ~ 70%(general scratch coat Gypsum Fibrosum The middle tradition fluvial sand volume upper limit is 70%), it is achieved large dosage is dissolved.
The present invention is with the difference in functionality of domestic and international existing like product:
The present invention has and conventional base plastering gupsum same performance, and under same bulk density, intensity does not has decline, its long-term shrinkage value Meet life requirement.Owing to dredging silt sand is only the 1/5 of common fluvial sand, therefore product price is the bottom mixing common fluvial sand smears About the 80% of ash Gypsum Fibrosum, cost performance is higher.
The invention have the advantage that
1, intensity is higher, has scratch coat Gypsum Fibrosum same performance；
2, relaxing dredging silt sand technology requirement, dissolving offer for large dosage may；
3, realize large dosage to dissolve, alleviate and dispose pressure；
4, product price is low, and cost performance is high；
5, there is fire prevention, sound absorption, adjusting air humidity function；
6, comprehensive utilization of resources is promoted.
Detailed description of the invention
Below by detailed description of the invention, the present invention will be further described.
Embodiment 1
Take the material of following weight ratio:
Desulphurization building gypsum 300 kilograms, 700 kilograms of navigation channel, entrance of Changjiang River dredging silt sand (clay content 1.7%), retarder 1.5 are public Jin, 1.5 kilograms of 1.5 ten thousand viscosity cellulose ether, starch ether 0.5 kilogram, 260 kilograms of water, be slowly stirred uniformly, prepares the present invention and produces Product.
Embodiment 2
Take the material of following weight ratio:
Desulphurization building gypsum 400 kilograms, 600 kilograms of navigation channel, entrance of Changjiang River dredging silt sand (clay content 49.7%), retarder 1.7 are public Jin, 2.0 kilograms of 20,000 viscosity cellulose ether, starch ether 0.5 kilogram, 388 kilograms of water, be slowly stirred uniformly, prepares the present invention and produces Product.
Embodiment 3
Take the material of following weight ratio:
Desulphurization building gypsum 500 kilograms, 500 kilograms of navigation channel, entrance of Changjiang River dredging silt sand (clay content 91.1%), retarder 2.0 are public Jin, 2.2 kilograms of 30,000 viscosity cellulose ether, starch ether 0.5 kilogram, 493 kilograms of water, be slowly stirred uniformly, prepares the present invention and produces Product.
Embodiment 4(comparative example)
Take the material of following weight ratio:
Desulphurization building gypsum 250 kilograms, fluvial sand 750 kilograms, retarder 1.1 kilograms, 1.5 kilograms of 1.5 ten thousand viscosity cellulose ether, shallow lake 0.5 kilogram of powder ether, 255 kilograms of water, be slowly stirred uniformly, prepare product of the present invention.
The embodiment of the present invention 1, example 2, example 3 prepare dredging silt sand scratch coat Gypsum Fibrosum and embodiment 4(comparative example) property Can be as shown in the table:
As can be seen from the above table, three groups of dredging silt sand scratch coat Gypsum Fibrosum comprcssive strength, adhesion strength are all suitable with comparative example. And meeting " plastering gupsum " GB/T28627-2012 requirement, drying shrinkage value meets " building mortar basic performance tests method " JGJ70-2009 requirement.Embodiment 1 and embodiment 4(comparative example) match ratio similar, its material price is about embodiment 4(pair Ratio) 80%.
Above-described embodiment is only the preference of the present invention, is not intended to limit the present invention, all within the principle of the present invention, Any equivalent done substitutes, modifications and variations, all within protection scope of the present invention.

Claims (6)

1. navigation channel, entrance of Changjiang River dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, it is characterised in that include following Step:
(1) material accurately weighing following weight ratio forms:
Means of flue gas desulfurization of power plant plaster of Paris 30 ~ 50 parts, 50 ~ 70 parts of dredging silt sand, retarder 0.15 ~ 0.25 part, cellulose ether 0.10 ~ 0.4 part, starch ether 0.05 part；
(2) adding in container by above-mentioned substance, add 26 ~ 50 parts of water, stirring at normal temperature is uniformly made.
Navigation channel, entrance of Changjiang River the most according to claim 1 dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, and it is special Levying and be, in described means of flue gas desulfurization of power plant plaster of Paris, half aqueous phase content is more than 85%, and remaining two aqueous phase content are less than 4%.
Navigation channel, entrance of Changjiang River the most according to claim 1 dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, and it is special Levying and be, described dredging silt sand is from navigation channel, entrance of Changjiang River dredged mud, and radiological measuring is qualified, to grain composition and clay content not Do requirement.
Navigation channel, entrance of Changjiang River the most according to claim 1 dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, and it is special Levying and be, described retarder is the five sodium-salt Na of diethylene-triamine pentaacetic acid5DTPA。
Navigation channel, entrance of Changjiang River the most according to claim 1 dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, and it is special Levying and be, described cellulose ether is ethoxyl methyl cellulose ether or hydroxypropyl methyl cellulose ether, range of viscosities: 10000 ~ 30000cps。
Navigation channel, entrance of Changjiang River the most according to claim 1 dredging silt sand prepares the preparation method of scratch coat Gypsum Fibrosum, and it is special Levying and be, described starch ether is carboxymethyl starch ether.
CN201610502798.9A 2016-07-01 2016-07-01 A kind of preparation method of navigation channel, entrance of Changjiang River dredging silt sand scratch coat Gypsum Fibrosum Pending CN106116416A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2237035C1 (en) * 2003-03-06 2004-09-27 ООО "Прикамская гипсовая компания" Dry plaster mix
CN101042009A (en) * 2007-04-27 2007-09-26 济南槐荫德邦强力乳胶涂料厂 Building wall surface protection finishing material and method for making same
CN101503290A (en) * 2009-03-10 2009-08-12 陕西科技大学 Preparation of environment friendly pervious brick
CN103332920A (en) * 2013-07-18 2013-10-02 中国矿业大学 Desulfurization gypsum sand pulp
CN104829203A (en) * 2015-03-24 2015-08-12 上海市建筑科学研究院(集团)有限公司 Desulfurization plaster light-weight aggregate thermal insulation mortar and preparing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2237035C1 (en) * 2003-03-06 2004-09-27 ООО "Прикамская гипсовая компания" Dry plaster mix
CN101042009A (en) * 2007-04-27 2007-09-26 济南槐荫德邦强力乳胶涂料厂 Building wall surface protection finishing material and method for making same
CN101503290A (en) * 2009-03-10 2009-08-12 陕西科技大学 Preparation of environment friendly pervious brick
CN103332920A (en) * 2013-07-18 2013-10-02 中国矿业大学 Desulfurization gypsum sand pulp
CN104829203A (en) * 2015-03-24 2015-08-12 上海市建筑科学研究院(集团)有限公司 Desulfurization plaster light-weight aggregate thermal insulation mortar and preparing method thereof

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Application publication date: 20161116