CN101560084B - Environmental-friendly waterproof polymer mortar - Google Patents

Environmental-friendly waterproof polymer mortar Download PDF

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Publication number
CN101560084B
CN101560084B CN2009100744985A CN200910074498A CN101560084B CN 101560084 B CN101560084 B CN 101560084B CN 2009100744985 A CN2009100744985 A CN 2009100744985A CN 200910074498 A CN200910074498 A CN 200910074498A CN 101560084 B CN101560084 B CN 101560084B
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CN
China
Prior art keywords
polymer mortar
latex powder
vinyl acetate
mortar
portions
Prior art date
Application number
CN2009100744985A
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Chinese (zh)
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CN101560084A (en
Inventor
赵风清
陈建波
张志国
曹素改
王国庆
赵春博
刘洪杰
朱宏博
于明江
张若思
Original Assignee
河北科技大学
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Priority to CN2009100744985A priority Critical patent/CN101560084B/en
Publication of CN101560084A publication Critical patent/CN101560084A/en
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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
    • 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
    • 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 environmental-friendly waterproof polymer mortar, which comprises the following components in portion by weight: 50 to 230 portions of low-clinker silicate cement, 200 to 450 portions of quartz sand, 80 to 120 portions of fly ash, 1 to 18 portions of re-dispersible polyethylene vinyl acetate latex powder, 1 to 10 portions of dispersible polyvinyl acetate vinyl versatate latex powder, 0.2 to 0.6 portion of water reducing agent, 0.05 to 0.3 portion of antifoaming agent, and 0.25 to 2.25 portions of polypropylene fibers. A gel material prepared from steel slag, tailings and the fly ash replaces silicate cement and partial aggregate in the prior mortar; the modified waterproof polymer mortar has the advantages of excellent impermeability, good mechanical property and construction property, simple production technology, and easy manufacture, greatly consumes industrial and mining wastes, controls the ecological environment, and lowers the cost; and the product has reliable quality and wide market; and the environmental-friendly waterproof polymer mortar can be popularized and applied in large area.

Description

A kind of environment-friendly type waterproof polymer mortar
Technical field
The present invention relates to a kind of material of construction, be specially a kind of environment-friendly type waterproof polymer mortar.
Background technology
Mortar be in the construction work application quantity big, use one of wide material of construction, be widely used in buildings build by laying bricks or stones and engineering such as wipe one's face in.60% above buildings is still being continued to use materials for walls such as brick, building block in the current construction work of China, and the building mortar of building by laying bricks or stones, using in the plastering construction is still based on sand-cement slurry or mixed mortar.Conventional cement mortar is a typical brittleness material, its ultimate compression strength height, and tensile strength, folding strength and cohesive strength are low, poor toughness, easy to crack.Therefore, be difficult to satisfy the requirement of project durability and operating efficiency, limited its application in construction work to a great extent.Find through great deal of experimental, in conventional cement mortar, add the performance that polymkeric substance can improve sand-cement slurry greatly, and polymkeric substance can play a role chronically.
The concern in fields such as built by multiple advantageous property owing to having for polymer-modified cement mortar, traffic, water conservancy and chemical industry, and beginning uses in actual engineerings such as the repairing of Portland cement concrete (PCC) and corrosion-resistant, water-proof coating, heat-insulation and heat-preservation and bridge floor, and the demand for development that meets recycling economy and conservation-minded society is used in the production of polymer-modified cement mortar.
In recent years, the fast development of domestic economy, and the introducing of a large amount of investment in foreign countriess and modern technique, exploitation, production and the application of polymer modification mortar have directly been driven, for building mortar has indicated direction at the aspects such as raising of energy-conservation, consumption reduction, suitability for industrialized production and improved performance, application level.
Summary of the invention
Technical problem to be solved by this invention provides a kind of industrial and mining enterprises' reclamation of solid wastes that solves and utilizes problem, makes the mortar of preparation have the environment-friendly type waterproof polymer mortar of excellent impervious water resistance simultaneously.
The present invention adopts following technical scheme:
The present invention includes following ratio of weight and number component: few clinker aggregate portland cement 50-230 part, quartz sand 200-450 part, flyash 80-120 part, plastic of poly vinyl acetate redispersable latex powder 1-18 part, Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder 1-10 part, water reducer 0.2-0.6 part, defoamer 0.05-0.3 part, polypropylene fibre 0.25-2.25 part.
Few clinker aggregate portland cement of the present invention adopts following ratio of weight and number component to make: cement clinker 150-250 part, slag 200-400 part, slag 200-400 part, gypsum 10-80 part, sodium sulfate 0.1-20 part.
The few clinker aggregate portland cement specific surface area 410m of control 2About/kg.Its performance satisfies the above strength grade requirement of composite Portland cement 32.5# of GB175 " general purpose portland cement ".
Described flyash satisfies the above class requirement of II level of GB/T 1596 " flyash that is used for cement and concrete " regulation.
Described water reducer belongs to naphthalenesulfonate or polycarboxylate series, water-reducing rate 〉=15%, and pH value 7-9, flowing degree of net paste of cement 220mm meets GB8076 " concrete admixture " standard-required.Defoamer is the SOLID ORGANIC silicon defoaming agent.
The polymkeric substance that is used for modifying mortar adopts redispersable latex powder, and wherein plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 0 ℃.Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 5 ℃.
Positively effect of the present invention is as follows:
Component grindings such as cement clinker, slag, slag, flyash, gypsum to the suitable fineness that at first will meet ratio requirement when environment-friendly type waterproof polymer mortar of the present invention prepares is made few clinker aggregate portland cement, then with quartz sand, water reducer, defoamer, redispersible polymer latex powder through Agravicmixer, mix, dry powder waterproof mortar product.
During use, need to add 50-95 part water, the control slurry consistency stirs between 60-80mm, promptly can be used for building operation.
The mortar product meets does mixed special waterproof mortar I type (dry powder class) performance index requirement among the JGT230 " premixing mortar ".Impervious pressure 〉=the 1.2MPa of 7d wherein, the impervious pressure 〉=1.7MPa of 28d.
Sand-cement slurry is behind the polymkeric substance comprehensively modifying, and aggregate combines and will well be improved with interface between the cement slurry, and the cohesive force between the two increases substantially.In the setting and harden process of mortar, polymkeric substance will make becoming firmly in conjunction with becoming closely knit, boning between the two at the zone of transition drying and forming-film between sand particle and the cement slurry.In addition, some active group in the polymer molecule also may with hydrated cementitious product generation chemical action, form special bridged bond effect, improve the structure of hydrated cementitious product, alleviate internal stress, thereby reduce the generation of tiny crack in the cement slurry.Be embodied in: the anti-folding of mortar, tensile strength increase substantially, and reduce voidage, thereby reduce the formation of desciccation crack, and the impermeability of mortar is improved.
The present invention utilizes industrial and mineral solid waste slag, slag, flyash grinding to make few clinker aggregate portland cement, by compound redispersible polymer latex powder, improves mortar performance, and is particularly impervious, preparation high-performance environment protection type waterproof polymer mortar.
The present invention be applicable to surface structures (washroom, swimming pool, balcony, roof and outer wall body etc.), water works (reservoir, dam, hydraulic pipe and industrial pond etc.), underground works (tunnel, subway, underground hydraulic pipe and vault etc.) waterproof, anti-blend protection against the tide.Improve phenomenons such as buildings leakage, infiltration, have vital role work-ing life improving building structure antiseepage ability, prolong to build.Owing to contain a large amount of solid waste (slag, slag, flyash etc.) in the product, have lower cost, and possess good environmental benefit, belong to the environment-friendly type building material.
The present invention is with part aggregate and cement production slag-slag base composite gelled material in slag, slag and the flyash replacement polymer mortar, not only can obviously improve mechanical property, workability, the water tolerance of mortar, reduce the cost of mortar, and can realize the utilization of waste as resource in enormous quantities of discharging in the industrial production, the requirement of green manufacturing is satisfied in the production of polymer mortar, meets the social needs that China develops a circular economy.
The raw materials for production of the present invention low price that is easy to get, production technology is simply easy to manufacture, the reliable product quality extensive market.No matter be in state in the people, still remarkable social benefit and economic benefit are all arranged in enterprise in society, can large scale application.
The every The performance test results of environment-friendly type waterproof polymer mortar of the present invention is:
(1) the impervious pressure of 7d: 1.05-1.5Mpa;
(2) the impervious pressure of 28d: 1.5-1.9Mpa;
(3) 28d ultimate compression strength: 24-30Mpa;
(4) 28d folding strength: 8-12Mpa;
(5) backfin ratio: 2.5-2.95;
(6) 7d stretching bonding strength: 1.0-1.2Mpa;
(7) 28d stretching bonding strength: 1.2-1.5MPa.
Embodiment
Below in conjunction with embodiment the present invention is elaborated.
Embodiment one
Contained component of waterproof polymer mortar of the present invention and ratio of weight and number thereof are: 100 parts of few clinker aggregate portland cements, 300 parts of quartz sands, 90 parts in flyash, 12 parts of plastic of poly vinyl acetate redispersable latex powders, 4 parts of Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powders, 0.4 part of water reducer, 0.1 part of defoamer, 0.6 part of polypropylene fibre.
Few clinker aggregate portland cement adopts following parts by weight component to make: cement clinker 150, slag 300, slag 200, gypsum or anhydrite 10, sodium sulfate 0.1.The control ratio surface-area is 415m 2/ kg, performance index satisfy the composite Portland cement 32.5 strength grade requirements of GB175 " general purpose portland cement "; Flyash is II level grade; Plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 5 ℃.
Described water reducer belongs to naphthalenesulfonate or polycarboxylate dehydragent, water-reducing rate 〉=15%, and the pH value is 7-9, and flowing degree of net paste of cement is 220mm, and defoamer is a silicone antifoam agent.
Described plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 5 ℃.
The preparation method is: at first a certain amount of cement clinker, slag, slag, gypsum, sodium sulfate grinding to suitable fineness are made few clinker aggregate portland cement, then with quartz sand, flyash, water reducer, defoamer, plastic of poly vinyl acetate redispersible polymer latex powder, Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder, polypropylene fibre through Agravicmixer, mix, dry powder waterproof mortar product.During use, needing to add ratio of weight and number is 50-95 part water, and the control slurry consistency is at 60-80mm, and stirring gets final product.
This example waterproof polymer mortar performance is as follows:
(1) the impervious pressure of 7d: 1.2Mpa;
(2) the impervious pressure of 28d: 1.6Mpa;
(3) 28d ultimate compression strength: 28.5Mpa;
(4) 28d folding strength: 10.1Mpa;
(5) backfin ratio: 2.82;
(6) 7d stretching bonding strength: 1.1Mpa;
(7) 28d stretching bonding strength: 1.4MPa.
Embodiment two
The component of waterproof polymer mortar and weight ratio thereof are: 50 parts of few clinker aggregate portland cements, 200 parts of quartz sands, 80 parts in flyash, 18 parts of plastic of poly vinyl acetate redispersable latex powders, 1 part of Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder, 0.6 part of water reducer, 0.05 part of defoamer, 2.20 parts of polypropylene fibres.
The few clinker aggregate portland cement of the present invention adopts following parts by weight component to make: cement clinker 250, slag 200, slag 400, gypsum or anhydrite 50, sodium sulfate 11, control ratio surface-area are 415m 2/ kg, performance index satisfy the composite Portland cement 32.5 strength grade requirements of GB175 " general purpose portland cement "; Flyash is II level grade; Plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 5 ℃.
Described water reducer belongs to naphthalenesulfonate or polycarboxylate dehydragent, water-reducing rate 〉=15%, and the pH value is 7-9, and flowing degree of net paste of cement is 220mm, and defoamer is a silicone antifoam agent.
Described plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and pH value is 6-8, and minimum film-forming temperature is 5 ℃.
This example waterproof polymer mortar performance is as follows:
(1) the impervious pressure of 7d: 1.1Mpa;
(2) the impervious pressure of 28d: 1.7Mpa;
(3) 28d ultimate compression strength: 27.0Mpa;
(4) 28d folding strength: 11.3Mpa;
(5) backfin ratio: 2.38;
(6) 7d stretching bonding strength: 1.2Mpa;
(7) 28d stretching bonding strength: 1.5MPa.
Embodiment three
The component of waterproof polymer mortar and weight fraction thereof are than being: lack 230 parts of clinker aggregate portland cements, 450 parts of quartz sands, 120 parts in flyash, 2 parts of plastic of poly vinyl acetate redispersable latex powders, 10 parts of Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powders, 0.5 part of water reducer, 0.2 part of defoamer, 1.10 parts of polypropylene fibres.
Few clinker aggregate portland cement adopts following parts by weight component to make: cement clinker 200, slag 400, slag 300, gypsum or anhydrite 80, sodium sulfate 20.The control ratio surface-area is 415m 2/ kg, performance index satisfy the composite Portland cement 32.5 strength grade requirements of GB175 " general purpose portland cement "; Flyash is II level grade; Plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 5 ℃.
Described water reducer belongs to naphthalenesulfonate or polycarboxylate dehydragent, water-reducing rate 〉=15%, and the pH value is 7-9, and flowing degree of net paste of cement is 220mm, and defoamer is a silicone antifoam agent.
Described plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and pH value is 6-8, and minimum film-forming temperature is 5 ℃.
This example waterproof polymer mortar performance is as follows:
(1) the impervious pressure of 7d: 1.3Mpa;
(2) the impervious pressure of 28d: 1.8Mpa;
(3) 28d ultimate compression strength: 30.0Mpa;
(4) 28d folding strength: 11.9Mpa;
(5) backfin ratio: 2.52;
(6) 7d stretching bonding strength: 1.4Mpa;
(7) 28d stretching bonding strength: 1.8MPa.

Claims (4)

1. an environment-friendly type waterproof polymer mortar is characterized in that it comprises following ratio of weight and number component: few clinker aggregate portland cement 50-230 part, quartz sand 200-450 part, flyash 80-120 part, plastic of poly vinyl acetate redispersable latex powder 1-18 part, Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder 1-10 part, water reducer 0.2-0.6 part, defoamer 0.05-0.3 part, polypropylene fibre 0.25-2.25 part.
2. a kind of environment-friendly type waterproof polymer mortar according to claim 1 is characterized in that described few clinker aggregate portland cement adopts following ratio of weight and number component to make: cement clinker 150-250 part, slag 200-400 part, slag 200-400 part, gypsum 10-80 part, sodium sulfate 0.1-20 part.
3. a kind of environment-friendly type waterproof polymer mortar according to claim 1 and 2, it is characterized in that described water reducer belongs to naphthalenesulfonate or polycarboxylate dehydragent, water-reducing rate 〉=15%, the pH value is 7-9, flowing degree of net paste of cement is 220mm, and defoamer is a silicone antifoam agent.
4. a kind of environment-friendly type waterproof polymer mortar according to claim 1 and 2 is characterized in that described plastic of poly vinyl acetate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 0 ℃; Vinyl Acetate Copolymer tertiary ethylene carbonate redispersable latex powder solid content is 98%, and the pH value is 6-8, and minimum film-forming temperature is 5 ℃.
CN2009100744985A 2009-06-02 2009-06-02 Environmental-friendly waterproof polymer mortar CN101560084B (en)

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