CN105906226B - A kind of preparation method of cement mixing pile compound additive, curing materials and compound additive - Google Patents

A kind of preparation method of cement mixing pile compound additive, curing materials and compound additive Download PDF

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Publication number
CN105906226B
CN105906226B CN201610232046.5A CN201610232046A CN105906226B CN 105906226 B CN105906226 B CN 105906226B CN 201610232046 A CN201610232046 A CN 201610232046A CN 105906226 B CN105906226 B CN 105906226B
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cement
mixing pile
compound additive
cement mixing
dispersant
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CN105906226A (en
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张津践
牛茂威
朱蓬莱
顾梁超
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Hangzhou Laibaode New Material Technology Co Ltd
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Hangzhou Laibaode New Material Technology Co Ltd
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    • 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
    • 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
    • C04B28/04—Portland 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
    • 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

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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)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

The invention discloses a kind of cement mixing pile compound additive and preparation method thereof, cement mixing pile compound additive is made up of the raw material of following mass percent：Nano silicon 5%~10%, triethanolamine 15%~20%, waterglass 10%~15%, dispersant 10%~15%, sodium carbonate 5%~8%, exciting agent 1%~1.5%, water surplus.The cement mixing pile compound additive is not changing existing construction equipment and technique, can save cement, reducing material cost by being used in combination with cement and gypsum；Or keep cost under the same conditions, pile strength is improved, particularly there is special consolidation humidification to the pile performance for improving the engineerings such as organic soil, peat soil, pool river silt mud.

Description

A kind of preparation of cement mixing pile compound additive, curing materials and compound additive Method
Technical field
The present invention relates to additive production field, specially cement mixing pile compound additive, for organic soil, river embankment The solidification pile of mud etc..
Background technology
Composite Foundation of Soil cement Mixing Piles consolidation process technology is commonly used to reinforce saturation soft clay low land base, generally use water Mud, flyash etc. are used as curing agent host, by special Mixing Machine, force to stir by weak soil and curing agent in ground depths Mix, chemically reacted using caused a series of physical between curing agent and weak soil, weak soil is hardened into steady with globality, water Property and setting intensity high-quality ground.Cement mixing pile compound additive is used in mixed way with curing agent, reaches the work of mixing enhancing With.
Cement mixing pile is generally mixed cement, flyash or other mineral admixtures at present, using dry method or wet Method is solidified, and improves the intensity of pile foundation, but presently used hardener dose is larger, and cost is higher, and in basement process mistake The problems such as intensity is relatively low, and Finish time is long in journey be present.Suitable additive is added in curing agent, passes through additive and water Mud, gypsum etc. are used in mixed way, and reach function synergic humidification, quickly can be reacted with mud, ground weak soil, intensity is fast Speed improves.
Conventional additive typically has gypsum, plays the role of slow setting and improves intensity, sodium chloride, there is early strength function, add Agent kind is numerous, different properties, and the influence to soil cement intensity is also different.Suitable additive is selected to be applied as cement mixing pile One of the problem of needing to pay attention in work.
The content of the invention
It is an object of the invention to by providing a kind of cement mixing pile compound additive, improve single cement mixing pile and consolidate The drawbacks of agent use cost is high, and material usage is more, and intensity is relatively low, made by playing collaboration enhancing together with existing curing agent With.
The present invention is achieved through the following technical solutions：
A kind of cement mixing pile compound additive, it is formed and mass percent is as follows：Nano silicon 5%~ 10%, triethanolamine 15%~20%, waterglass 10%~15%, dispersant 10%~15%, sodium carbonate 5%~8%, excite Agent 1%~1.5%, water surplus.
Further, the present invention in nanometer silicon dioxide particle size used in 20nm~50nm.
Further, the dispersant used in the present invention is a kind of liquid cationic surfactant, it is possible to increase cement mortar The mobility of body, reduce cement consumption.
Further, the exciting agent being previously mentioned in the present invention is liquid, is capable of the reactivity of excited cement, increases cement The intensity of mixing pile.
Cement mixing pile compound additive mentioned in the present invention, can be with gypsum powder (CaSO4.2H2O) mix simultaneously, it is raw The moderate dosage of land plaster is the 2~4% of cement weight.Gesso (plaster of Paris CaSO should not be mixed4.1/2H2O).Typically not Need to mix other additives such as calcium lignosulfonate water reducer or triethanolamine early strength agent again.
It can be used for mixing with cement, flyash, miberal powder or other mineral according to the cement mixing pile compound additive of the present invention Close cement mixing pile curing materials of the material for host.
Cement mixing pile compound additive in the present invention, its preparation method comprise the following steps：
First, material is weighed according to following percentage composition：Nano silicon 5%~10%, triethanolamine 15%~ 20%, waterglass 10%~15%, dispersant 10%~15%, sodium carbonate 5%~8%, exciting agent 1%~1.5%, more than water Amount.
Then dispersant, nano silicon, waterglass and water are mixed, stirring at low speed 30min, then high-speed stirred 10min, mixed solution A is made.
Triethanolamine and exciting agent are finally added into mixed solution A, 30min is at the uniform velocity stirred and can obtain required cement Mixing pile compound additive.
The cement mixing pile compound additive cost of the present invention is low, and it is convenient to prepare, by coordinating and making with cement, gypsum With, cement can be saved, it is good in economic efficiency；It can be obtained for greatly with rapidly solidified pile, the strength and stability of pile foundation simultaneously The raising of width degree.
The cement mixing pile compound additive of the present invention is not changing existing construction equipment and technique, and ensures to reach benchmark On the premise of design mixture proportion intensity, cement 20% can be saved, reduces material cost 15% or so；Or keep cost identical Under the conditions of, improve pile strength 30% or so；Pile particularly to improving the engineerings such as organic soil, peat soil, pool river silt mud Performance has special consolidation humidification.
Embodiment
With reference to embodiment, the invention will be further described, but the scope of protection of present invention is not limited to reality Apply the scope of example expression：
Embodiment 1.
Material is weighed according to following percentage composition：Nano silicon 5%, triethanolamine 15%, waterglass 15%, disperse Agent 15%, sodium carbonate 5%, exciting agent 1%, water surplus.Dispersant, nano silicon, waterglass and water are mixed, it is low Speed stirring 30min, then high-speed stirred 10min, are made mixed solution A.Then triethanolamine and exciting agent are added into mixed solution A, at the uniform velocity stir 30min and can obtain required cement mixing pile compound additive.
It is deep layer weak soil that soil sample is chosen in experiment, and soil strength is low, and rich in organic matter, foundation bearing capacity standard value is only 50KPa, it is typical soft soil foundation, Water Content Tests in Soil Samples 36.3%, soil sample apparent density is 1700kg/m3.
Cement mixing pile complex cement mentioned in the present invention uses original soil sample:P.O42.5 cement is 1:0.12, gypsum is used Measure as the 3% of cement consumption, cement mixing pile compound additive dosage is the 0.15% of cement consumption, the ratio of mud 0.5.Will be mixed Weak soil and ash after conjunction are stirred sample preparation, pour the sample for building up 70.7mm*70.7mm*70.7mm, test 7d, 14d, 28d and The compression strength of 90d ages.
The compressive strength test result (MPa) of table 1
Numbering 7d 14d 28d 90d
Adding composite additive 0.79 1.20 1.77 2.81
Non- adding composite additive 0.70 1.09 1.36 1.95
Result of the test shows that cement mixing pile intensity 90d can increase after adding patented product cement mixing pile compound additive Long more than 30%, positive effect.
Embodiment 2.
Material is weighed according to following percentage composition：Nano silicon 8%, triethanolamine 15%, waterglass 15%, disperse Agent 10%, sodium carbonate 5%, exciting agent 1.5%, water surplus.Dispersant, nano silicon, waterglass and water are mixed, Stirring at low speed 30min, then high-speed stirred 10min, mixed solution A is made.Then it is molten triethanolamine and exciting agent to be added into mixing Liquid A, at the uniform velocity stir 30min and can obtain required cement mixing pile compound additive.
Experiment selection soil sample is organic sludge matter soil, and soil is rich in organic matter, and Water Content Tests in Soil Samples is high, and more than 40%, nothing is held Carry power.
Cement mixing pile complex cement mentioned in the present invention uses original soil sample:P.O42.5 cement is 1:0.15, gypsum is used Measure as the 4% of cement consumption, cement mixing pile compound additive dosage is the 0.15% of cement consumption, the ratio of mud 0.5.Will be mixed Weak soil and ash after conjunction are stirred sample preparation, pour and build up 0.7mm*70.7mm*70.7mm, test 7d, 14d, 28d and 90d age Compression strength.
The compressive strength test result (MPa) of table 2
Numbering 7d 14d 28d 90d
Adding composite additive 0.69 1.32 1.67 2.71
Non- adding composite additive 0.71 1.19 1.46 2.05

Claims (6)

  1. A kind of 1. cement mixing pile compound additive, it is characterised in that the compound additive by following mass percent component Composition：Nano silicon 5%~10%, triethanolamine 15%~20%, waterglass 10%~15%, dispersant 10%~ 15%, sodium carbonate 5%~8%, exciting agent 1%~1.5%, water surplus, the dispersant is cationic surfactant, described Exciting agent is liquid exciting agent.
  2. 2. the cement mixing pile compound additive to be stated according to claim 1, it is characterised in that nano silicon used Grain size is in 20nm~50nm.
  3. 3. a kind of cement mixing pile curing materials, it is characterised in that including the curing agent that cement is host, and claim 1 Or the cement mixing pile compound additive described in 2.
  4. 4. cement mixing pile curing materials according to claim 3, it is characterised in that be also added into the curing materials Gypsum powder, the volume of gypsum powder are the 2~4% of cement weight.
  5. 5. cement mixing pile curing materials according to claim 4, it is characterised in that curing agent is replaced with flyash or miberal powder For cement.
  6. A kind of 6. preparation method of cement mixing pile compound additive as claimed in claim 1 or 2, it is characterised in that：Including Following steps：(1) material is weighed according to following percentage composition：Nano silicon 5%~10%, triethanolamine 15%~ 20%, waterglass 10%~15%, dispersant 10%~15%, sodium carbonate 5%~8%, exciting agent 1%~1.5%, more than water Amount；(2) dispersant, nano silicon, waterglass and water are mixed, stirring at low speed 30min, then high-speed stirred 10min, Mixed solution A is made, triethanolamine and exciting agent are then added into mixed solution A, at the uniform velocity stirs 30min.
CN201610232046.5A 2016-04-14 2016-04-14 A kind of preparation method of cement mixing pile compound additive, curing materials and compound additive Active CN105906226B (en)

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106431051A (en) * 2016-09-06 2017-02-22 广东华路交通科技有限公司 Composite additive adapted to Guangdong coastal deep soft soil rapid pile-forming cement mixing pile
CN106431047B (en) * 2016-10-13 2019-03-26 中建商品混凝土眉山新材料有限公司 Polycarboxylate water-reducer thixotropic agent, thixotropic polycarboxylate water-reducer and its application
CN107500626A (en) * 2017-08-29 2017-12-22 招商局蛇口工业区控股股份有限公司 The preparation method of mud mixing pile
CN109626928B (en) * 2019-01-07 2021-08-03 昆明理工大学 Composite curing agent suitable for peat soil and preparation method thereof
CN110387867B (en) * 2019-07-25 2021-07-06 上海隧道工程有限公司 Method suitable for reinforcing triaxial mixing pile under condition of peat soil stratum
CN111621301A (en) * 2020-06-06 2020-09-04 江苏博业环保工程有限公司 Deep soft foundation soil curing agent and preparation method thereof
CN112279618A (en) * 2020-11-12 2021-01-29 中冶成都勘察研究总院有限公司 Additive for high-pressure rotary spraying construction
CN112552010A (en) * 2020-12-31 2021-03-26 上海三瑞高分子材料股份有限公司 Curing material for foundation treatment
CN113235580B (en) * 2021-04-22 2022-03-15 广东省水利水电第三工程局有限公司 Foundation reinforcement treatment method

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH0717752A (en) * 1993-06-30 1995-01-20 Shimizu Corp Cement mixing agent, hydraulic cement composition and applying method
CN101215141A (en) * 2008-01-02 2008-07-09 邓亚光 Soft soil curing agent
CN102344813A (en) * 2011-07-18 2012-02-08 徐辰楚 Curing agent for curing marine poor subsoil
CN102518126A (en) * 2011-11-24 2012-06-27 华南理工大学 Method for preparing cement-soil mixing pile
CN104844062A (en) * 2015-04-29 2015-08-19 浙江大学 Nano modified cement mixing pile additive suitable for ocean rock-soil environment and preparation method of additive

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0717752A (en) * 1993-06-30 1995-01-20 Shimizu Corp Cement mixing agent, hydraulic cement composition and applying method
CN101215141A (en) * 2008-01-02 2008-07-09 邓亚光 Soft soil curing agent
CN102344813A (en) * 2011-07-18 2012-02-08 徐辰楚 Curing agent for curing marine poor subsoil
CN102518126A (en) * 2011-11-24 2012-06-27 华南理工大学 Method for preparing cement-soil mixing pile
CN104844062A (en) * 2015-04-29 2015-08-19 浙江大学 Nano modified cement mixing pile additive suitable for ocean rock-soil environment and preparation method of additive

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