CN1107447A - Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent - Google Patents

Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent Download PDF

Info

Publication number
CN1107447A
CN1107447A CN94115574A CN94115574A CN1107447A CN 1107447 A CN1107447 A CN 1107447A CN 94115574 A CN94115574 A CN 94115574A CN 94115574 A CN94115574 A CN 94115574A CN 1107447 A CN1107447 A CN 1107447A
Authority
CN
China
Prior art keywords
waste
gypsum
reducing agent
efficiency water
naphthalene series
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
CN94115574A
Other languages
Chinese (zh)
Inventor
陈恩义
廉慧珍
覃维祖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Original Assignee
Tsinghua University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tsinghua University filed Critical Tsinghua University
Priority to CN94115574A priority Critical patent/CN1107447A/en
Publication of CN1107447A publication Critical patent/CN1107447A/en
Pending legal-status Critical Current

Links

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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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
    • C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • 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

Landscapes

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

Abstract

The method for utilizing the waste includes low-temp. baking, mixing with aluminate clinker, gypsum and active mixture, grinding, and sieving to obtain plasticizing anti-cracking agent. If it is added to cement, plasticizing and expansion of cement take effect, so adapting anti-cracking concrete.

Description

Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent
The present invention relates to the utilization of waste in the building material product, belong to building material field.
Naphthalene series high-efficiency water-reducing agent has been widely used for the cement concrete engineering at present.High-concentration naphthalene series high-efficiency water-reducing agent (Na 2SO 4Content is less than 10%) production process in to add usually calcium oxide as alkaline corrective with in and contain acidity in the naphthalenesulfonate formaldehyde condensation compound solution after the sulfonation, produce in a large number with CaSO thus 4Be main throw out (hereinafter to be referred as gypsum by-product), this throw out can cause in the concrete that as being directly used in concrete stability is bad, causes the later strength retraction, so can only be as offal treatment.
The purpose of this invention is to provide a kind of method of handling waste in the high-concentration naphthalene series high-efficiency water-reducing agent production process, make it to become a kind of new useful products.
Content of the present invention is the waste oven drying at low temperature during high-concentration naphthalene series high-efficiency water-reducing agent is produced, obtain gypsum by-product, again with itself and aluminate clinker, gypsum, active addition (shale ashes or flyash), it is levigate to mix the back according to a certain ratio, get final product the plasticizing anticracking agent.This plasticizing anticracking agent can admixture form be used for the preparation and the construction of cement concrete.Its concrete manufacture craft is as follows:
Waste oven drying at low temperature (＜100 ℃) in the high-concentration naphthalene series high-efficiency water-reducing agent production is obtained gypsum by-product and aluminate clinker, gypsum, active addition (available shale ashes or flyash) mixing is milled down to 0.08 mm sieve screen over-size less than 10%, promptly gets finished product plasticizing anticracking agent of the present invention.Above-mentioned several proportion of raw materials is: gypsum by-product 50%, gypsum 15-25%, aluminate clinker 10-25%, active addition 25-0%.
The plasticizing anticracking agent that the present invention makes can produce significant plastification (water-reducing rate is up to 15-20%) when mixing in the cement concrete batching and have the compensate for shrinkage function simultaneously.With 10-15%(place of cement rate) mix cement after, cement setting time: initial set 〉=45 minute, final set≤12 hour, 14 days water curing limited expansion rates of sand-cement slurry 0.04-0.06%, can produce 0.6-0.9MPa from stress, 28 days post-shrinkage ratio＜0.01% in dry air, can prevent concrete effectively because the cracking that drying shrinkage causes, the cement concrete water-reducing rate reaches 15-20%, compares with the normal concrete of identical workability, and intensity improved 10-15% in 28 days.
Illustrate that embodiment is as follows:
Embodiment one:
Consist of as waste oven dry back gained gypsum by-product: dihydrate gypsum 78%, solubility naphthalene series high-efficiency water-reducing agent solid 22%; Then by following formulated
Gypsum by-product (50%)+luminite cement grog (10%)+dihydrate gypsum ore deposit (15%)+shale ashes (25%) → levigate (0.08mm tails over≤8%) promptly gets I shape anticracking agent
Performance:
Mix 15% I shape anticracking agent, cement water-reducing rate 15%, cement initial set 1 hour 25 minutes, final set 2 hours 15 minutes; Limited expansion rate 0.047% after the sand-cement slurry water curing in 14 days, it is high by 5% to limit shrinking percentage compressive strength rate contrast in 0.007%, 28 day sample in the dry air after 28 days; 28 days strength ratio benchmark of concrete sample high by 10%.
Embodiment two:
Consist of as waste oven dry back gained gypsum by-product: dihydrate gypsum 75%, solubility naphthalene series high-efficiency water-reducing agent solid 25%; Then by following formulated
Gypsum by-product (50%)+luminite cement grog (15%)+dihydrate gypsum ore deposit (25%)+flyash (10%) → levigate (0.08mm tails over≤8%) promptly gets I shape anticracking agent
Performance:
Mix 12% I shape anticracking agent, cement water-reducing rate 17%, cement initial set 1 hour 20 minutes, final set 2 hours 15 minutes; Limited expansion rate 0.057% after the sand-cement slurry water curing in 14 days, it is high by 7.2% to limit shrinking percentage compressive strength rate contrast in 0.005%, 28 day sample in the dry air after 28 days; 28 days strength ratio benchmark of concrete sample high by 11.5%.
Embodiment three:
Consist of as waste oven dry back gained gypsum by-product: dihydrate gypsum 80%, solubility naphthalene series high-efficiency water-reducing agent solid 20%; Then by following formulated
Gypsum by-product (50%)+luminite cement grog (25%)+dihydrate gypsum ore deposit (25%) → levigate (0.08mm tails over≤8%) promptly gets II shape anticracking agent
Performance:
Mix 12% II shape anticracking agent, cement water-reducing rate 20%, cement initial set 1 hour, final set 2 hours 05 minute; Limited expansion rate 0.06% after the sand-cement slurry water curing in 14 days, in the dry air after 28 days 0.008%, 28 day compressive strength rate of residue limited expansion rate contrast sample high by 10.2%; 28 days strength ratio benchmark of concrete sample high by 14.5%.
Wherein I shape anticracking agent can be used for preparing normal concrete or the mortar with higher waterproofing and anti-leakage requirement, as be used for underground or roofing rigid waterproofing concrete, pond or the concrete of the no expansion joint of long distance armoured concrete slab, basic anchoring with concrete preparation and construction, the II type then can be used for requirement and has high application property (but pumping), high volume stability (not splitting), high permeability resistant (reaching more than the S12) and high strength (C50～C70) concrete preparation and construction.
The present invention plastifies anticracking agent and is applicable to the concrete works with higher anticracking, impervious requirement, also be applicable to basic anchoring, grouting, last-cost joint etc. simultaneously, be particularly useful for preparing have high application property, high performance concrete that high volume stability, high permeability resistant and high strength require.

Claims (2)

1, in a kind of high-concentration naphthalene series high-efficiency water-reducing agent production waste utilize method, it is characterized in that the waste oven drying at low temperature in the high-concentration naphthalene series high-efficiency water-reducing agent production, get gypsum by-product, again with itself and aluminate clinker, gypsum, active addition (shale ashes or flyash) mix according to a certain ratio the back levigate get final product the plasticizing anticracking agent.
2,, it is characterized in that prescription is by the method for utilizing of the waste in the said high-concentration naphthalene series high-efficiency water-reducing agent production of claim 1:
The gypsum by-product 50% of waste oven dry back gained
Aluminate clinker 10-25% gypsum 15-25%
Active addition (shale ashes or flyash) 25-0%
CN94115574A 1994-09-16 1994-09-16 Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent Pending CN1107447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN94115574A CN1107447A (en) 1994-09-16 1994-09-16 Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN94115574A CN1107447A (en) 1994-09-16 1994-09-16 Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent

Publications (1)

Publication Number Publication Date
CN1107447A true CN1107447A (en) 1995-08-30

Family

ID=5037601

Family Applications (1)

Application Number Title Priority Date Filing Date
CN94115574A Pending CN1107447A (en) 1994-09-16 1994-09-16 Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent

Country Status (1)

Country Link
CN (1) CN1107447A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005037033A1 (en) 2003-10-17 2005-04-28 Xiaoyong Liu An intelligent cooking method
CN103864331A (en) * 2014-03-04 2014-06-18 南京瑞迪高新技术有限公司 Recycling method of residues in high-concentration naphthalene water reducer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005037033A1 (en) 2003-10-17 2005-04-28 Xiaoyong Liu An intelligent cooking method
CN103864331A (en) * 2014-03-04 2014-06-18 南京瑞迪高新技术有限公司 Recycling method of residues in high-concentration naphthalene water reducer
CN103864331B (en) * 2014-03-04 2015-08-19 南京瑞迪高新技术有限公司 The resource utilization method of residue in a kind of high dense naphthalene water reducer production

Similar Documents

Publication Publication Date Title
CN1027690C (en) Coal powder ash brick excused from firing and steaming and the production method thereof
KR20070121808A (en) Hydraulic binding agent
CN103030321A (en) Expanding agent, post-tensioning prestressed concrete porelike grouting agent and grouting material
CN102731040B (en) Method for preparing building block brick series products by using waste electrolytic manganese slag
CN112939561B (en) Phosphogypsum-based light plastering gypsum and preparation method thereof
EP0140156B1 (en) A process for producing a hardened product of coal ash
CN112429990A (en) Inorganic cementing material produced by using solid wastes such as fly ash, mineral powder and desulfurized gypsum
CN112341116A (en) Desulfurized gypsum and super-sulfur cement concrete and preparation method thereof
CN1107447A (en) Method for utilization of waste from production of high-concentration naphthalene series high-efficiency water-reducing agent
KR19990088360A (en) Artificial light-weight aggregate, method for manufacturing the artificial light-weight aggregate
JPH04305043A (en) Temperature buffering type rapid hardening composition
CN1033574C (en) Swelling agent for tuff
CN1101790C (en) Process for preparing cement by wet grinding of waste slags
JP2002512935A (en) Cementitious mixture
CN113024195A (en) Wet-mixed mortar using recycled aggregate and preparation method thereof
KR20180020021A (en) Mortar composition not containing sand and use thereof
CN1272467A (en) Environment-protective baking-free brick and preparing method thereof
KR100474976B1 (en) The method for manufacturing of composition for height-intensity concrete
KR20150044341A (en) Cement composition for accelerating concrete curing
CN1188085A (en) Clinker-free portland cement and low-clinker cement
KR102656641B1 (en) Construction method of atypical scenery structure using sprayed concrete for self-healing scenery
CN1335280A (en) Coagulation-regulating gelatinizer for premixed mortar and its production process
FI130623B (en) Hardening mixture
CN117383903B (en) High-toughness early-strength repair material with high solid waste doping amount, preparation method and application
JP2747294B2 (en) Admixture for cement mortar and concrete

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
AD01 Patent right deemed abandoned
C20 Patent right or utility model deemed to be abandoned or is abandoned