CN105541239B - A kind of organically-modified cement base mending mortar - Google Patents

A kind of organically-modified cement base mending mortar Download PDF

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Publication number
CN105541239B
CN105541239B CN201510972440.8A CN201510972440A CN105541239B CN 105541239 B CN105541239 B CN 105541239B CN 201510972440 A CN201510972440 A CN 201510972440A CN 105541239 B CN105541239 B CN 105541239B
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China
Prior art keywords
parts
organically
mending mortar
cement base
modified cement
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Expired - Fee Related
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CN201510972440.8A
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Chinese (zh)
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CN105541239A (en
Inventor
宫晨琛
孙科科
芦令超
王守德
赵丕琪
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University of Jinan
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University of Jinan
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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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • 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
    • C04B2103/302—Water reducers
    • 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
    • C04B2103/50—Defoamers, air detrainers
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials

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

Abstract

The invention discloses a kind of organically-modified cement base mending mortar, it is made up of the raw material of following mass parts：100 200 parts of quick hardening sulphoaluminate cements, 20 50 parts of portland cements, 20 50 parts of agstones, 5 30 parts of super finely ground slags, 150 400 parts of nano-attapulgites, 25 parts of swelling agents, 70 150 parts of cationic emulsified bitumens, 0.06 0.1 parts of defoamers, 0.6 2 parts of water reducers, 200 600 parts of sand, 100 150 parts of water.The mending mortar mechanical performance of the present invention is high, and anti-permeability performance is good, and mortar overall shrinkage is small, and good with cement matrix compatibility, raw material is cheap and easy to get, and cost is relatively low, and suitable large-scale promotion is used.

Description

A kind of organically-modified cement base mending mortar
Technical field
The present invention relates to new building material field, and in particular to a kind of organically-modified cement base mending mortar.
Background technology
With the high speed development of national economy, people also continue to develop to the demand of building, and no matter is many existing buildings It is state of appearance or uses function, the requirement of the modern life can not be met, and urgent need is reinforced and transformed.Cement matrix Expect building during long-term use, permeated by heavy load, Frozen-thawed cycled, chlorion, surface abrasion, corrosive medium The factor such as erosion influence, many buildings occur in that the phenomenons such as cracking, peeling, hollowing, greatly have impact on making for engineering Use the life-span.
There is patching material and be divided into inorganic and organic two major class in existing market, cement base mending mortar is concrete structure dimension Repair or material that reinforcing is the most frequently used.But traditional cement material is in use, with tensile strength is small, toughness is small, shrink Greatly, the inherent shortcoming such as chemical resistance difference, influences the performance of cement-based material.The patching material and cement of existing polymerization species The poor compatibility and cost of base material are high, also there is that construction effect is poor in actual work progress, and adhesion strength is low, setting time Long, poor durability is easily fallen off, and practicality is poor, so as to limit the production and application of cement base mending mortar.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of mechanical performance height, anti-permeability performance is good, mortar overall shrinkage It is small, the good organically-modified cement base mending mortar with cement matrix compatibility.
The purpose of the present invention is achieved by the following technical solution：
A kind of organically-modified cement base mending mortar, is made up of the raw material of following mass parts：100-200 parts of fast hard sulphur Aluminate cement, 20-50 parts of portland cements, 20-50 parts of agstones, 5-30 parts of super finely ground slags, 150-400 parts of nano concavo-convexes Rod soil, 2-5 parts of swelling agents, 70-150 parts of cationic emulsified bitumens, 0.06-0.1 parts of defoamers, 0.6-2 parts of water reducers, 200- 600 parts of sand, 100-150 parts of water.
It is preferred that, a kind of organically-modified cement base mending mortar is made up of the raw material of following mass parts：150 parts fast Hardening sulphoaluminate cement, 35 parts of portland cements, 35 parts of agstones, 15 parts of super finely ground slags, 230 parts of nano-attapulgites, 4 parts Swelling agent, 110 parts of cationic emulsified bitumens, 0.08 part of defoamer, 1.3 parts of water reducers, 400 parts of sand, 130 parts of water.
Described, cationic emulsified bitumen is BS modified cation emulsified asphalt, and solid content is 40-45%, viscosity is 50-300mPas.
Described, defoamer is fatty acid polyglycol ether derivant.
Described, water reducer is polycarboxylate water-reducer.
Described, swelling agent is magnesia class swelling agent.
Described, agstone particle diameter is 20-75 μm.
Described, super finely ground slag particle diameter is 0.4-10 μm.
Described, nano-attapulgite particle diameter is 30-500nm；Described, sand is lime stone matter Machine-made Sand.
Beneficial effects of the present invention：
Shunk 1. the organically-modified cement base mending mortar of the present invention reduces hardening of cement slurry, improve binder materials early stage Intensity, short construction period, sulfur resistive aluminic acid salt corrosion is excellent, and stable long-term strength increases, and long-term behaviour is stable.
2. the nano-attapulgite and super finely ground slag of the present invention have good filing effect and reactivity, hence it is evident that improve Repair matrix mechanical property and and consistency, it is ensured that cement slurry mechanical performance, while using water reducer, both can guarantee that construction Performance, while also meeting the requirement for reducing autogenous shrinkage deformation, has extremely wide application prospect in repairing rush construction.
3. the mending mortar of the present invention is solidifying to adjust by adjusting the ratio of quick hardening sulphoaluminate cement and portland cement Tie in time change, the emergency work that varying environment can be used, realize Rapid-Repair.
4. the cationic emulsified bitumen of the present invention bonds preferable, pliability increase with cement organic and inorganic interfacial transition zone, Significantly improve the compression strength and anti-permeability performance of mending mortar, good endurance.
5. the mending mortar mechanical performance of the present invention is high, anti-permeability performance is good, and mortar overall shrinkage is small, compatible with cement matrix Property is good, and raw material is cheap and easy to get, and cost is relatively low, and suitable large-scale promotion is used.
Embodiment
The agstone of the present invention is derived from Jinan, Shandong Province stone pit stone pit, and main component is CaCO3, its primary chemical Composition is as shown in the table.
The stone flour primary chemical of table 1 constitutes (wt.%)
CaO SiO2 Al2O3 Fe2O3 K2O MgO
80.7-92.6 2.34-5.34 1.01-4.06 1.02-1.36 0.13-0.48 2.53-3.22
Embodiment 1
A kind of organically-modified cement base mending mortar, is made up of the raw material of following mass parts：200 parts of fast hard sulphur aluminic acids Salt cement, 20 parts of portland cements, 20 parts of agstones, 5 parts of super finely ground slags, 400 parts of nano-attapulgites, 2 parts of magnesia classes Swelling agent, 150 parts of cationic emulsified bitumens, 0.06 part of fatty acid polyglycol ether derivant, 0.6 part of polycarboxylate water-reducer, 200 parts of lime Stone matter Machine-made Sand, 150 parts of water.
Described, cationic emulsified bitumen is SB modified cation emulsified asphalt, and solid content is 40-45%, viscosity is 50mPas.
Described, agstone particle diameter is 75 μm.
Described, super finely ground slag particle diameter is 10 μm.
Described, nano-attapulgite particle diameter is 30nm.
Measuring, organically-modified cement base mending mortar performance manufactured in the present embodiment is as follows：3d compression strength reaches 37.2MPa, 28d compression strength 57.1MPa；28d adhesion strengths reach 7.4MPa；28d shrinkage factors are up to 0.09%；In 2.0MPa Heng Shui 48h is pressed, seepage is occurred without, display is impervious good.
Embodiment 2
A kind of organically-modified cement base mending mortar, is made up of the raw material of following mass parts：150 parts of fast hard sulphur aluminic acids Salt cement, 35 parts of portland cements, 35 parts of agstones, 15 parts of super finely ground slags, 230 parts of nano-attapulgites, 4 parts of magnesia classes Swelling agent, 110 parts of cationic emulsified bitumens, 0.08 part of fatty acid polyglycol ether derivant, 1.3 parts of polycarboxylate water-reducers, 400 parts of lime Stone matter Machine-made Sand, 130 parts of water.
Described, cationic emulsified bitumen is SB modified cation emulsified asphalt, and solid content is 40-45%, viscosity is 150mPas.
Described, agstone particle diameter is 50 μm.
Described, super finely ground slag particle diameter is 5 μm.
Described, nano-attapulgite particle diameter is 300nm.
Measuring, organically-modified cement base mending mortar performance manufactured in the present embodiment is as follows：3d compression strength reaches 36.3MPa, 28d compression strength 58.9MPa；28d adhesion strengths reach 8.6MPa；28d shrinkage factors are up to 0.06%；In 2.0MPa Heng Shui 48h is pressed, seepage is occurred without, display is impervious good.
Embodiment 3
A kind of organically-modified cement base mending mortar, is made up of the raw material of following mass parts：100 parts of fast hard sulphur aluminic acids Salt cement, 50 parts of portland cements, 50 parts of agstones, 30 parts of super finely ground slags, 150 parts of nano-attapulgites, 5 parts of magnesia classes Swelling agent, 70 parts of cationic emulsified bitumens, 0.1 part of fatty acid polyglycol ether derivant, 2 parts of polycarboxylate water-reducers, 600 parts of lime stone matter Machine-made Sand, 100 parts of water.
Described, cationic emulsified bitumen is BS modified cation emulsified asphalt, and solid content is 40-45%, viscosity is 300mPas.
Described, agstone particle diameter is 20 μm.
Described, super finely ground slag particle diameter is 0.4 μm.
Described, nano-attapulgite particle diameter is 500nm.
Measuring, organically-modified cement base mending mortar performance manufactured in the present embodiment is as follows：3d compression strength reaches 37.6MPa, 28d compression strength 59.6MPa；28d adhesion strengths reach 6.2MPa；28d shrinkage factors are up to 0.1%；In the permanent hydraulic pressure of 2.0MPa 48h, occurs without seepage, and display is impervious good.
Comparative example
A kind of cement base mending mortar, is made up of the raw material of following mass parts：100 parts of quick hardening sulphoaluminate cements, 50 parts of portland cements, 50 parts of agstones, 30 parts of super finely ground slags, 150 parts of nano-attapulgites, 5 parts of magnesia class swelling agents, 2 parts of polycarboxylate water-reducers, 600 parts of lime stone matter Machine-made Sands, 100 parts of water.
Described, agstone particle diameter is 20 μm.
Described, super finely ground slag particle diameter is 0.4 μm.
Described, nano-attapulgite particle diameter is 500nm.
Measuring, cement base mending mortar performance manufactured in the present embodiment is as follows：3d compression strength reaches 38.5MPa, 28d Compression strength 60.2MPa；28d adhesion strengths reach 5.2MPa；28d shrinkage factors are up to 2.3%；In the permanent hydraulic pressure 48h of 2.0MPa, occur low Seepage, display is impervious general.
The mending mortar good mechanical property of the present invention, anti-permeability performance is good, and mortar overall shrinkage is small, with cement matrix compatibility Good, raw material is cheap and easy to get, and cost is relatively low, and suitable large-scale promotion is used.

Claims (5)

1. a kind of organically-modified cement base mending mortar, it is characterised in that be made up of the raw material of following mass parts：100- 200 parts of quick hardening sulphoaluminate cements, 20-50 parts of portland cements, 20-50 parts of agstones, 5-30 parts of super finely ground slags, 150- 400 parts of nano-attapulgites, 2-5 parts of swelling agents, 70-150 parts of cationic emulsified bitumens, 0.06-0.1 parts of defoamers, 0.6-2 parts Water reducer, 200-600 parts of sand, 100-150 parts of water；
Described cationic emulsified bitumen is BS modified cation emulsified asphalt, and solid content is 40- 45%, viscosity is 50-300mPas；
The agstone particle diameter is 20-75 μm；
The super finely ground slag particle diameter is 0.4-10 μm；
The nano-attapulgite particle diameter is 30-500nm；The sand is lime stone matter Machine-made Sand.
2. organically-modified cement base mending mortar according to claim 1, it is characterised in that be by the original of following mass parts Material composition：150 parts of quick hardening sulphoaluminate cements, 35 parts of portland cements, 35 parts of agstones, 15 parts of super finely ground slags, 230 parts Nano-attapulgite, 4 parts of swelling agents, 110 parts of cationic emulsified bitumens, 0.08 part of defoamer, 1.3 parts of water reducers, 400 parts of sand, 130 parts of water.
3. organically-modified cement base mending mortar according to claim 1 or 2, it is characterised in that described defoamer is Fatty acid polyglycol ether derivant.
4. organically-modified cement base mending mortar according to claim 1 or 2, it is characterised in that the water reducer is poly- Carboxylic acid water reducer.
5. organically-modified cement base mending mortar according to claim 1 or 2, it is characterised in that the swelling agent is oxygen Change magnesium class swelling agent.
CN201510972440.8A 2015-12-23 2015-12-23 A kind of organically-modified cement base mending mortar Expired - Fee Related CN105541239B (en)

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Application Number Priority Date Filing Date Title
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CN105541239B true CN105541239B (en) 2017-09-29

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CN110194632A (en) * 2019-06-17 2019-09-03 福州大学 A kind of asphalt pavement pit material for quickly repairing and its restorative procedure
CN115594454B (en) * 2022-11-10 2023-05-02 通辽市公路养护中心 Environment-friendly emulsified asphalt mortar for repairing cracks

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CN100334032C (en) * 2006-02-28 2007-08-29 武汉理工大学 High early strength self expansion CA mortar material
CN102503268B (en) * 2011-10-25 2013-06-05 中铁六局集团有限公司 Cement emulsifying asphalt mortar for repairing CRTS II type ballastless track and preparation method thereof
CN104211356B (en) * 2014-09-11 2016-09-14 锦州东方雨虹建筑材料有限责任公司 A kind of modified cement-based waterproofing slurry of emulsified asphalt and preparation and application thereof

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