WO2017074270A2 - Matériaux de construction comprenant des celluloses modifiées - Google Patents

Matériaux de construction comprenant des celluloses modifiées Download PDF

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Publication number
WO2017074270A2
WO2017074270A2 PCT/TH2016/000087 TH2016000087W WO2017074270A2 WO 2017074270 A2 WO2017074270 A2 WO 2017074270A2 TH 2016000087 W TH2016000087 W TH 2016000087W WO 2017074270 A2 WO2017074270 A2 WO 2017074270A2
Authority
WO
WIPO (PCT)
Prior art keywords
modified celluloses
materials
construction materials
cited
modified
Prior art date
Application number
PCT/TH2016/000087
Other languages
English (en)
Other versions
WO2017074270A3 (fr
Inventor
Supakeat KAMBUTONG
Suebthip PONGPAIBOON
Patcharin PERMPAISARNSAKUL
Sayamon SOMSUB
Passarin JONGVISUTTISUN
Original Assignee
Scg Packaging Public Company Limited
Scg Cement-Building Materials Company Limited
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
Priority claimed from TH1501006609A external-priority patent/TH163028A/th
Application filed by Scg Packaging Public Company Limited, Scg Cement-Building Materials Company Limited filed Critical Scg Packaging Public Company Limited
Priority to CN201680062602.7A priority Critical patent/CN108495828A/zh
Publication of WO2017074270A2 publication Critical patent/WO2017074270A2/fr
Publication of WO2017074270A3 publication Critical patent/WO2017074270A3/fr

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
    • 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
    • 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
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/80—Optical properties, e.g. transparency or reflexibility
    • C04B2111/802—White cement
    • 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

Definitions

  • the cracking of the walls of buildings or constructions can occur due to several causes which include those that are not related to the structural works.
  • the said cracking may be due to the issue of plaster losing a significant amount of water too fast. This can be influenced by the level of water absorption of brick walls, atmospheric heat, etc.
  • the problems regarding the cracking of the construction walls can be due to mistakes during the operational steps such as the lack of sufficient curing which leads to the early loss of water thereby resulting in the early shrinkage of plaster.
  • WO 02/28796 A2 discloses composite building materials comprising cementitious matrix and cellulose fibers containing inorganic/ organic compositions which suppress the flow of water. Said cellulose fibers are obtained from the chemical reaction and or the physical coating in order to reinforce construction materials that require lower water absorption and penetration.
  • WO 02/28795 A2 discloses composite building materials comprising cementitious matrix and cellulose fibers in which the surfaces are improved by blocking hydrophilic fibers using a sizing-agent which is an inorganic and/ or organic resin.
  • the said sizing- agent comprises hydrophilic and hydrophobic compositions.
  • the cellulose fibers in which the surfaces are improved according to this invention are used in construction materials that require lower water absorption and penetration.
  • US 2004/ 0168615 Al discloses composite cement reinforced with bleached cellulose fibers and mixed with non-bleached cellulose fibers which are used for substituting partial or all premium grade fibers.
  • the process of manufacturing cement composite according to this invention provides a product which has a modulus of rapture and toughness comparable or higher than those of composite cement materials reinforced with premium grade cellulose fibers.
  • US 7,972,433 B2 discloses the composition of cement reinforced by using fibers comprising hydraulic inorganic material, siliceous material, and wood reinforcing materials having the length of fibers in the range of 0.5-3.0 millimeters and diameter of 10- 100 microns, mica and polyvinyl alcoholic resin.
  • the said wood reinforcing materials comprise non-bleached kraft fibers and/ or bleached kraft fibers obtained from needle- leaves-tree and used newspaper paper in the ratio of 1 : 1 to 4: 1.
  • This invention is related in particular to construction materials having modified celluloses which comprise cementitious materials, aggregates, and modified celluloses.
  • the said modified celluloses are obtained from modified cellulose morphology using base or base metal salts.
  • the said modified celluloses have the crystal linity index in the range of 20-50%.
  • the objective of this invention is to provide construction materials comprising modified celluloses that have advantages in various technical effects namely construction material products comprising modified celluloses according to this invention that have the ability to delay cracking and have higher flexural strength while maintaining high compressive strength when compared to general construction materials reinforced with natural cellulose and anti-cracking cellulose available in the market. Moreover, construction material products according to this invention provide good workability without the addition of a flow adjusting substance when the construction materials contain a suitable amount of modified celluloses.
  • Figure 1 shows the distribution of ( a) natural cellulose fibers and ( b) modified cellulose fibers according to this invention through a scanning electron microscope.
  • Figure 2 shows the test results regarding restrained shrinkage of construction materials comprising natural cellulose fibers and construction materials comprising modified cellulose fibers according to this invention in comparison to the controlled construction materials without any fibers.
  • Figure 3 shows the results of the physical test regarding the flexural strength of construction materials comprising natural fibers, construction materials comprising modified cellulose fibers according to this invention, and general construction materials comprising anti-cracking cellulose fibers in comparison to the controlled construction materials without any fibers.
  • construction materials having modified celluloses comprising cementitious materials, aggregates, and modified celluloses characterized in that said modified celluloses are the modified celluloses obtained from the modified cellulose morphology using base or base metal salts.
  • the said modified celluloses have crystallinity index in the range of 20-50%.
  • Natural celluloses Modified celluloses according to this invention Natural celluloses which are modified will have lower dipole moment thereby reducing the level of water absorption at the surface of the cellulose fibers without losing the water absorption and bleeding properties and allow better distribution in water.
  • the modified cellulose morphology will provide a wider gap between cellulose molecules which will lead to the ability to partially absorb water and bleed during the cement curing period. Furthermore, the decrease in the dipole moment causes a decrease in the water absorption at the surface of the modified natural celluloses.
  • construction materials comprising modified celluloses have the ratio of amorphous cellulose higher than the ratio of crystalline cellulose.
  • XRD X-ray diffraction technique
  • said modified celluloses have a better distribution when compared to that of natural cellulose. Details of which are shown in Figure 1. According to this invention, said modified celluloses have the proper crystallinity index in the range f 35 - 45%.
  • said modified celluloses have water retention in the range of 45 - 65% and have proper water retention in the range of 50 - 60%.
  • said modified celluloses have voltage in the fiber surface area ( system zeta potential) in the range of -75 to - 1 35 millivolts.
  • the amount of said modified celluloses is in the range of 0.05 - 2.0% by weight of cementitious materials and the proper amount of said modified celluloses is in the range of 0.2 - 0.7 % by weight of cementitious materials.
  • the amount of said cementitious materials is in the range of 5 - 95% by dry weight of construction materials comprising modified celluloses and the proper amount of said cementitious materials is in the range of 5 - 50% by dry weight of construction materials comprising modified celluloses.
  • said natural celluloses are obtained from sources selected from the group consisting of hard-wood, soft-wood, non-wood, and mixtures of the aforesaid.
  • proper natural celluloses are obtained from hardwood in which the proper hardwood includes eucalyptus.
  • said natural cellulose fibers may be either bleached natural cellulose or unbleached natural cellulose.
  • cementitious materials are selected from a group of materials consisting of portland cement, white cement, iron slag, and the mixture of the said cements.
  • portland cement is selected from a group of portland cement consisting of ordinary portland cement type 1 , ordinary portland cement type 2, ordinary portland cement type 3, ordinary portland cement type 4, ordinary portland cement type 5, and a mixture of said cements.
  • construction materials comprising modified celluloses further comprise supplementary cementitious materials or pozzolanic materials.
  • said pozzolanic materials are selected from a group of materials consisting of silica fume, ground limestone, fly ash, and mixture of the said materials.
  • said aggregate is selected from a group of materials consisting of fine aggregate, coarse aggregate, recycled aggregate, porous aggregate, and a mixture of the said aggregate.
  • the proper aggregate is selected from a group consisting of sand, rock, ground limestone, clay, and a mixture of the said materials.
  • construction materials comprising modified celluloses further comprise admixture selected from a group of substances consisting of rheology modifier, superplasticizer, retarder, accelerator, and mixture of the said admixtures.
  • said salt base of metal is a salt base of metal selected from sodium, magnesium, and potassium metal.
  • construction materials namely mortar, were prepared based on the mixing ratio of cement and sand of 1 : 1-3 by volume and the water to cement ratio is 0.25 - 0.5. Thereafter, the construction materials as prepared were tested in order to investigate flexural strength by using fiber as additive in the amount of 0. 10 - 0.35% by volume of mortar. From the result, it was found that construction materials comprising modified cellulose fibers and construction materials comprising natural cellulose fibers have higher flexural strengths of 24% and 40% respectively which are more than general construction materials comprising anti-cracking cellulose fibers ( as shown in Figure 3 ) . However, though construction materials comprising fibers as additive provided a higher flexural strength for mortar, compressive strength was decreased.
  • construction materials namely mortar, were prepared based on the mixing ratio of cement and sand of 1 : 1-3 by volume and the water to cement ratio is 0.25 - 0.5. Thereafter, the construction materials as prepared were tested in order to compare the flow of construction materials comprising natural cellulose fibers and construction materials comprising modified celluloses according to this invention in different amounts.
  • the controlled flow value is 105 +5%. From the result, it was found that construction materials comprising modified celluloses in the amount of 0. 1 - 0.35% by volume of mortar can provide a flow value comparable to that of the controlled construction materials without the addition of plasticizers.
  • construction materials comprising modified celluloses according to this invention can provide benefits in terms of technical effects namely construction materials comprising modified celluloses can further delay cracking and increase flexural strength while maintaining high compressive strength.
  • the said materials are suitable for use in the works requiring the decrease in cracking, particularly for the efficient use as plaster.
  • construction materials comprising modified celluloses according to this invention comprise the compositions, amount, and details as aforementioned provide advantages.
  • the construction materials comprising modified celluloses according to this invention are not limited to the compositions, amount, and details as aforementioned and may be modified or amended and deemed to be within the concepts and scope of this invention.

Landscapes

  • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Cette invention concerne des matériaux de construction ayant des celluloses modifiées qui comprennent des matériaux cimentaires, des agrégats et des celluloses modifiées caractérisées en ce que lesdites celluloses modifiées sont des celluloses modifiées obtenues à partir de la morphologie des celluloses modifiées au moyen de sels de base ou de sels métalliques de base. Lesdites celluloses modifiées présentent l'indice de cristallinité dans la plage de 20 à 50 %.
PCT/TH2016/000087 2015-10-29 2016-10-27 Matériaux de construction comprenant des celluloses modifiées WO2017074270A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680062602.7A CN108495828A (zh) 2015-10-29 2016-10-27 包括改性纤维素的建筑材料

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TH1501006609 2015-10-29
TH1501006609A TH163028A (th) 2015-10-29 วัสดุก่อสร้างที่มีเซลลูโลสดัดแปร

Publications (2)

Publication Number Publication Date
WO2017074270A2 true WO2017074270A2 (fr) 2017-05-04
WO2017074270A3 WO2017074270A3 (fr) 2017-07-20

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Country Status (2)

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CN (1) CN108495828A (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113955981A (zh) * 2021-10-22 2022-01-21 深圳市鸿生建材有限公司 一种高强再生混凝土及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471866A1 (fr) * 1990-08-20 1992-02-26 Shin-Etsu Chemical Co., Ltd. Dérivé d'éther de cellulose soluble dans l'eau
US6843844B1 (en) * 2002-01-22 2005-01-18 Therm-O-Lite Construction Products, Inc. Modified cellulose aggregate material
US7241338B2 (en) * 2003-09-30 2007-07-10 The Regents Of The University Of Michigan Sprayable, strain-hardening cementitious compositions
FI123503B (fi) * 2009-10-02 2013-06-14 Upm Kymmene Corp Materiaali käytettäväksi betonin lisäaineena
CN104119025B (zh) * 2014-08-11 2017-02-15 山东华森混凝土有限公司 水泥砂浆用保水增稠增强添加剂及含有添加剂的水泥砂浆
CN104479031A (zh) * 2014-12-18 2015-04-01 广西大学 一种机械活化协同金属盐降解纤维素的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113955981A (zh) * 2021-10-22 2022-01-21 深圳市鸿生建材有限公司 一种高强再生混凝土及其制备方法
CN113955981B (zh) * 2021-10-22 2022-10-04 深圳市鸿生建材有限公司 一种高强再生混凝土及其制备方法

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Publication number Publication date
WO2017074270A3 (fr) 2017-07-20
CN108495828A (zh) 2018-09-04

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