US3827204A - Sealed joint for sectionalized flooring and method of making the same - Google Patents

Sealed joint for sectionalized flooring and method of making the same Download PDF

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Publication number
US3827204A
US3827204A US00234537A US23453772A US3827204A US 3827204 A US3827204 A US 3827204A US 00234537 A US00234537 A US 00234537A US 23453772 A US23453772 A US 23453772A US 3827204 A US3827204 A US 3827204A
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United States
Prior art keywords
sealant
joint
seal
sectionalized
cured
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.)
Expired - Lifetime
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US00234537A
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English (en)
Inventor
F Walters
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.)
ATK Launch Systems LLC
Original Assignee
Thiokol Corp
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 Thiokol Corp filed Critical Thiokol Corp
Priority to US00234537A priority Critical patent/US3827204A/en
Priority to CA157,797A priority patent/CA974080A/en
Priority to JP48006252A priority patent/JPS492320A/ja
Priority to GB327473A priority patent/GB1406539A/en
Priority to DE2311611A priority patent/DE2311611A1/de
Application granted granted Critical
Publication of US3827204A publication Critical patent/US3827204A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6801—Fillings therefor

Definitions

  • the seal is formed of a sealant based on a cured liquid polymer, preferably a liquid polysulfide polymer and has a layer of glass cloth embedded therein parallel to and somewhat below the upper surface of the seal. Both the method and the sealed joint are claimed.
  • This invention relates to sectionalized flooring constructed of structural elements which are blocks or slabs of materials such as concrete, stone, ceramic or terrazzo tiles, slate and the like with the adjacent edges of the structural elements defining joints that are filled with an elastic seal. More particularly, the invention relates to a novel and improved method of making the elastic seal in such joints, as well as to the resulting sealed joints.
  • Sectionalized flooring of the type referred to above is extensively used in both indoor and outdoor applications for patios, malls, plazas, the floors of public buildings and the like which are subjected to extensive pedestrian traffic.
  • the joints between adjacent structural elements of the floor are commonly filled with elastic seals to accomodate thermal expansion and contraction which would otherwise cause cracking, flaking or other disintegration of the surface of the floor.
  • Numerous materials have been proposed for sealing the joints between the structural elements of such flooring.
  • Polysulfide polymer-based sealants are well known in the art and have been extensively used for forming elastomeric seals between surfaces of such materials as metals, glass, concrete and the like. When properly formulated and cured, they form elastomeric seals that are highly resistant to moisture, sunlight, temperature variations and solvents and retain their elastomeric character after exposure to varying atmospheric conditions for long periods of time.
  • the polysulfide polymers commonly used in polysulfide based sealants are liquid polymers that may be prepared, for example, as described in US. Pat. No. 2,466,963. As disclosed in the latter patent, high molecular weight polymers can be prepared which can then be split to form polythiopolymercaptan polymers having molecular weights of the order of 300 to 25,000 and which are viscous liquids having viscosities within the range 300 to 150,000 centipoises at 25C. Such liquid polymers can be cured by any of various curing agents as disclosed in U.S. Pat. No. 2,466,963 to form solid elastomers having excellent resistance to acids, alkalis, petroleum hydrocarbons and atmospheric moisture and oxidation.
  • such polymers may be represented by the formula HS(RS n)m SH wherein n has an average value of 1.5 to 5, m may vary from say 2 to 70 and R is a divalent hydrocarbon, oxahydrocarbon or thiahydrocarbon radical.
  • n has an average value of 1.5 to 5
  • m may vary from say 2 to 70 and R is a divalent hydrocarbon, oxahydrocarbon or thiahydrocarbon radical.
  • One of the most widely used types of liquid polythiopolymercaptan polymer is made by reacting bis-beta-chloroethylformal with a sodium sulfide solution in the presence of a small percentage of trichloropropane to form a solid polymer which when split as disclosed in US. Pat. No. 2,466,963 yields a liquid polymer largely composed of the recurring units (SCH CH OCH OCH CH S) and having free mercapto terminals and from say 0.1 to 4 percent of cross-linking
  • the liquid polymers can be cured by a wide variety of curing agents to form solid elastomers having excellent resis tance to acids, alkalis, petroleum hydrocarbons and atmospheric oxidation.
  • Suitable curing agents include organic oxidizing agents such as benzoyl peroxide, dicumyl peroxide, dibutyl tin oxide and nitrobenzenes; and inorganic peroxides including the alkali metal and alkaline earth metal peroxides, such as sodium peroxide, lithium peroxide, calcium peroxide, barium peroxide; as well as zinc peroxide, lead peroxide, antimony peroxide, manganese dioxide and sodium perbonate.
  • Sealant compositions based on the liquid polysulfide polymers commonly contain in addition to the polymer and curing agent various additives such as finely divided inorganic fillers, plasticizers, thixotropic agents, cure accelerating or retarding agents and adhesion promoters.
  • the sealant may be of the twopart or one-part type.
  • the liquid polymer and one or more additives may be placed in one package and the curing agent and one or more additives in a second package. The two packages are shipped to the point of use and mixed just prior to being used.
  • Such two-part sealants are disclosed, for example, in US. Pat. Nos. 3,349,047; 3,312,669 and 3,328,451.
  • One-part or one-package sealants based on liquid polythiopolymercaptan polymers are disclosed, for example, in US. Pat. Nos. 3,225,017; 3,349,047 and 3,499,864.
  • such one-part sealants are formulated by using curing agents which do not react with the liquid polymer at ambient temperature when kept in a sealed package but when exposed to the atmosphere become activated by atmospheric moisture or oxygen to effect the desured cure of the polysulfide polymer.
  • a deliquescent accelerating agent is included in the composition to accelerate the cure when the sealant composition is exposed to the atmosphere.
  • Such accelerating agents may include alkali metal and alkaline earth metal oxides, peroxides and hydroxides.
  • the objects of the invention are achieved in general by providing a sealed joint in which the sealant material has a horizontal, reticulate reinforcing layer embedded therein just below the upper surface of the sealant. It has been found that when the proper type of reinforcing layer is properly positioned within the sealant of the joint, the penetration resistance of the seal is greatly enhanced. More particularly, it has been found that when a glass cloth reinforcing layer is embedded in the sealant slightly below its upper surface, the tendency of high heels of ladies shoes to form cavities in the surface of the sealant is eliminated. For example, in a test installation made in the manner described hereafter, a spiked heel worn by a 140-pound woman standing on the joint produced no detectable deformation of the upper surface of the seal.
  • the reinforcing strip desirably has a width substantially equal to the width of the joint, but it need not be attached or secured to the adjacent walls of the sections to be sealed. It has been found surprisingly that by merely embedding a strip of glass cloth slightly below the upper surface of the sealant without anchoring it to the side walls of the joint an unexpectedly large increase in the penetration resistance of the surface of the sealant is achieved. Also it has been found that incorporation of the glass cloth layer in the sealant does not adversely affect the physical properties of the resulting joint.
  • FIG. I is a vertical section on a greatly enlarged scale through a portion of a concrete block floor showing a pair of blocks and the sealed joint therebetween;
  • FIG. 2 is a vertical section taken on the line 2--2 of FIG. 1 and further showing the relationship between the components of the seal.
  • the numerals l and 12 designate a pair of concrete blocks having the confronting spaced vertical surfaces 14 and 16 which define a joint generally designated 18.
  • a resilient rope 20 having an unstressed diameter somewhat larger than the width of the joint is forced or wedged into the joint to form a support for the subsequently introduced components of the seal.
  • the rope 20 may be made, for example, of a foamed plastic, e.g., polystyrene, polyethylene, polypropylene or polyurethane.
  • the rope as shown in the drawing has a circular cross-section in its unstressed condition, it will be evident that the rope may have any other crosssectional configuration that will permit to perform its function of a back-up material for the sealant.
  • the rope may be of oval or polygonal crosssection.
  • a quantity of a liquid curable polysulfide sealant is poured into the joint to form a lower sealant layer 22.
  • the sealant composition desirably has an adhesion pro moter incorporated therein to cause the cured sealant to adhere firmly to the walls 14 and 16 of blocks 10 and 12.
  • conventional primer solutions can be applied to the walls 14 and 16 before the seal is formed in the joint to promote adhesion of the sealant to the walls.
  • the reason for filling the joint to a level slightly below the upper surfaces of blocks 10 and 12 is to ensure that upon thennal expansion of the blocks the sealant will not bulge upwardly above the surfaces of the blocks. In the drawing the upper surface of the cured sealant is shown as planar.
  • sealant compositions may be substituted for the polysulfide base sealant referred to above.
  • sealant compositions based on liquid polyurethane prepolymers of the polyester or polyether type may be used.
  • liquid urethane prepolymers have isocyanate terminals and may be cured with, for example, polyepoxides and polyamines.
  • sealant compositions based on silicone polymers for example, silicone polymers of the type disclosed in US. Pat. No. 3,189,576, which silicone polymers are air-curable may be used.
  • Other modifications of the invention will be apparent to those skilled in the art.
  • a pair of spaced structural elements selected from masonry blocks, ceramic tiles and slate, said elements forming part of a floor essentially composed therof and defining a joint therebetween, a rope of resilient supporting material wedged in said joint to a point spaced below the upper surfaces of said elements, a body of cured polysulfide base sealant substantially filling the space in said joint above said resilient rope and adhered to the sides of said joint, and a horizontal layer of glass cloth tape having a width substantially equal to the width of said joint embedded in said body of cured sealant slightly below the upper surface thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Floor Finish (AREA)
  • Building Environments (AREA)
  • Sealing Material Composition (AREA)
  • Laminated Bodies (AREA)
US00234537A 1972-03-14 1972-03-14 Sealed joint for sectionalized flooring and method of making the same Expired - Lifetime US3827204A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00234537A US3827204A (en) 1972-03-14 1972-03-14 Sealed joint for sectionalized flooring and method of making the same
CA157,797A CA974080A (en) 1972-03-14 1972-11-29 Sealed joint for sectionalized flooring and method of making the same
JP48006252A JPS492320A (enrdf_load_stackoverflow) 1972-03-14 1973-01-11
GB327473A GB1406539A (en) 1972-03-14 1973-01-22 Sealed joint for sectionalized flooring and method of making the same
DE2311611A DE2311611A1 (de) 1972-03-14 1973-03-09 Fugendichtung fuer fussbodenelemente und verfahren zu deren herstellung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00234537A US3827204A (en) 1972-03-14 1972-03-14 Sealed joint for sectionalized flooring and method of making the same

Publications (1)

Publication Number Publication Date
US3827204A true US3827204A (en) 1974-08-06

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US00234537A Expired - Lifetime US3827204A (en) 1972-03-14 1972-03-14 Sealed joint for sectionalized flooring and method of making the same

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US (1) US3827204A (enrdf_load_stackoverflow)
JP (1) JPS492320A (enrdf_load_stackoverflow)
CA (1) CA974080A (enrdf_load_stackoverflow)
DE (1) DE2311611A1 (enrdf_load_stackoverflow)
GB (1) GB1406539A (enrdf_load_stackoverflow)

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29377E (en) * 1972-11-16 1977-08-30 Frangible concrete-joint sealant package
US4058947A (en) * 1975-09-17 1977-11-22 Johns-Manville Corporation Fire resistant joint system for concrete structures
EP0100208A1 (en) 1982-07-23 1984-02-08 Alh Systems Limited Expansion joint
US4784516A (en) * 1988-02-10 1988-11-15 Harco Research, Inc. Traffic bearing expansion joint cover and method of preparing same
US4824283A (en) * 1987-01-09 1989-04-25 Belangie Michael C Sealed highway joint and method
US4860508A (en) * 1989-01-24 1989-08-29 Jackson Thomas L A Flooring system and method for constructing same
US4927291A (en) * 1987-01-09 1990-05-22 Belangie Michael C Joint seal for concrete highways
US5007765A (en) * 1988-09-16 1991-04-16 Dow Corning Corporation Sealing method for joints
US5024554A (en) * 1990-02-22 1991-06-18 Koch Materials Company Bridge joint construction
US5649784A (en) * 1995-06-16 1997-07-22 Pavetech International, Inc. Expansion joint system and method of making
RU2143044C1 (ru) * 1999-04-19 1999-12-20 Линер Андрей Феликсович Компенсатор деформаций сборных деревянных покрытий полов
FR2804456A1 (fr) * 2000-01-31 2001-08-03 Taraflex Procede pour la realisation d'un revetement de sol
WO2002068772A1 (fr) * 2001-02-27 2002-09-06 Gerflor Procede pour la realisation d'un revetement de sol
US6491468B1 (en) * 1997-08-12 2002-12-10 Sealex, Inc. Foam backed joint seal system
US20040168387A1 (en) * 2003-02-28 2004-09-02 David Nelson Method and apparatus for sealing windows of a building
US20060117692A1 (en) * 2002-08-23 2006-06-08 Trout John T Joint materials and configurations
US20070151185A1 (en) * 2005-12-29 2007-07-05 Robinson Steven R Method and device for resilient seal system
US20080236092A1 (en) * 2007-03-29 2008-10-02 John Sich Method of manufacturing terrazzo tiles, terrazzo tiles and flooring system assembled with terrazzo tiles
US8221030B1 (en) 2009-07-02 2012-07-17 Versaflex, Inc. Cover for a liquid reservoir
US20140196831A1 (en) * 2012-01-13 2014-07-17 The Boeing Company Systems, methods, and components for the construction and disassembly of raised panel assemblies
CN104711917A (zh) * 2015-03-20 2015-06-17 刘保群 一种飞机场跑道升降带伸缩缝密封的保全施工法
US9206596B1 (en) 2015-03-10 2015-12-08 Schul International, Inc. Expansion joint seal system
US9404581B1 (en) 2014-02-28 2016-08-02 Schul International Company, LLC Joint seal system
US20170227041A1 (en) * 2016-02-08 2017-08-10 Hamilton Sundstrand Corporation Sealant articles and method of applying sealant
US9745738B2 (en) 2015-12-30 2017-08-29 Schul International Company, LLC Expansion joint for longitudinal load transfer
US9765486B1 (en) 2016-03-07 2017-09-19 Schul International Company, LLC Expansion joint seal for surface contact applications
US9803357B1 (en) 2016-07-22 2017-10-31 Schul International Company, LLC Expansion joint seal system providing fire retardancy
US9915038B2 (en) 2016-03-07 2018-03-13 Schul International Company, LLC Durable joint seal system with detachable cover plate and rotatable ribs
US9982428B2 (en) 2015-12-30 2018-05-29 Schul International Company, LLC Expansion joint seal with surface load transfer, intumescent, and internal sensor
US10060122B2 (en) 2015-03-10 2018-08-28 Schul International Company, LLC Expansion joint seal system
US10066386B2 (en) 2015-12-30 2018-09-04 Schul International Company, LLC Expansion joint seal with surface load transfer and intumescent
US10081939B1 (en) 2016-07-22 2018-09-25 Schul International Company, LLC Fire retardant expansion joint seal system with internal resilient members and intumescent members
US10087620B1 (en) 2016-07-22 2018-10-02 Schul International Company, LLC Fire retardant expansion joint seal system with elastically-compressible body members, resilient members, and fire retardants
US10087621B1 (en) 2015-03-10 2018-10-02 Schul International Company, LLC Expansion joint seal system with isolated temperature-activated fire retarding members
US10087619B1 (en) 2016-07-22 2018-10-02 Schul International Company, LLC Fire retardant expansion joint seal system with elastically-compressible members and resilient members
US10125490B2 (en) 2016-07-22 2018-11-13 Schul International Company, LLC Expansion joint seal system with internal intumescent springs providing fire retardancy
US10213962B2 (en) 2015-12-30 2019-02-26 Schul International Company, LLC Expansion joint seal with load transfer and flexion
US10227734B1 (en) 2017-12-26 2019-03-12 Veloxion, Inc. Helically-packaged expansion joint seal system
US10240302B2 (en) 2016-03-07 2019-03-26 Schul International Company, LLC Durable joint seal system with detachable cover plate and rotatable ribs
US10280610B1 (en) 2016-07-22 2019-05-07 Schul International Company, LLC Vapor-permeable water and fire-resistant expansion joint seal
US10280611B1 (en) 2016-07-22 2019-05-07 Schul International Company, LLC Vapor permeable water and fire-resistant expansion joint seal
US10323407B1 (en) 2016-07-22 2019-06-18 Schul International Company, LLC Water and fire-resistant expansion joint seal
US10323408B1 (en) 2016-07-22 2019-06-18 Schul International Company, LLC Durable water and fire-resistant tunnel expansion joint seal
US10323409B1 (en) 2018-07-12 2019-06-18 Schul International Company, LLC Expansion joint system with flexible sheeting
US10344471B1 (en) 2016-07-22 2019-07-09 Schull International Company, LLC Durable water and fire-resistant expansion joint seal
US10352003B2 (en) 2016-03-07 2019-07-16 Schul International Company, LLC Expansion joint seal system with spring centering
US10352039B2 (en) 2016-03-07 2019-07-16 Schul International Company, LLC Durable joint seal system with cover plate and ribs
US10358813B2 (en) 2016-07-22 2019-07-23 Schul International Company, LLC Fire retardant expansion joint seal system with elastically-compressible body members, internal spring members, and connector
US20190329533A1 (en) * 2014-09-12 2019-10-31 Nike, Inc. Membranes and uses thereof
US10480654B2 (en) 2014-02-28 2019-11-19 Schul International Co., Llc Joint seal system having internal barrier and external wings
US10724235B2 (en) * 2015-04-23 2020-07-28 Hughes General Contractors, Inc. Joint-free concrete
US10851541B2 (en) 2018-03-05 2020-12-01 Schul International Co., Llc Expansion joint seal for surface contact with offset rail
CN112065115A (zh) * 2020-08-05 2020-12-11 上海建工二建集团有限公司 预制清水看台板的密封方法
US20220010548A1 (en) * 2020-06-26 2022-01-13 Schluter Systems L.P. Expansion Joint Profile System
US11359367B2 (en) * 2019-02-28 2022-06-14 Sk Wiegrink Beteiligungs Gmbh Joint filling profile
US11903440B2 (en) 2016-06-29 2024-02-20 Nike, Inc. Multi-layered structures and uses thereof
US12180987B2 (en) 2021-02-01 2024-12-31 Schluter Systems L.P. Profile system for intersecting joints
US12203265B2 (en) * 2023-01-11 2025-01-21 Saudi Arabian Oil Company Sulfur pit roof degradation mitigation
US12269947B2 (en) 2018-09-13 2025-04-08 Nike, Inc. Multi-layered structures and uses thereof

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JPS5721107U (enrdf_load_stackoverflow) * 1980-07-04 1982-02-03
ZA826123B (en) * 1981-09-04 1983-07-27 Dow Corning Sealing method and device
JPS59109317A (ja) * 1982-12-15 1984-06-25 Kodama Kagaku Kogyo Kk 合成樹脂の熱溶着方法
DE3518189C2 (de) * 1985-05-21 1987-04-09 Hartmut 7500 Karlsruhe Zimmermann Verfahren zum Sanieren schadhafter Bodenbeläge aus Belagplatten und nach dem Verfahren ausgebildete Fuge
DE3713173A1 (de) * 1987-04-17 1988-11-03 Basika Entwaesserungen Gmbh Bodenrinnenprofil fuer eine bodenablaufrinne
JPH05840U (ja) * 1991-06-20 1993-01-08 早川ゴム株式会社 ゴムタイルの敷設構造
DE10002866B4 (de) * 2000-01-24 2008-02-07 Sk Wiegrink Beteiligungs Gmbh Verfahren zur Herstellung eines Fugenfüllungsprofils
GB0329891D0 (en) 2003-12-23 2004-01-28 Airbus Uk Ltd A sealing material
DE102008012302A1 (de) 2008-03-03 2009-09-10 Sk Wiegrink Beteiligungs Gmbh Fugenfüllungsprofil und Verfahren zu seiner Herstellung

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US2220444A (en) * 1937-11-06 1940-11-05 Us Rubber Co Expansion joint
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US3145502A (en) * 1955-04-01 1964-08-25 Rubenstein David Structural element and method of making
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US2220444A (en) * 1937-11-06 1940-11-05 Us Rubber Co Expansion joint
US2210138A (en) * 1937-12-11 1940-08-06 A C Horn & Company Method of sealing joints
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AT188741B (de) * 1954-11-25 1957-02-11 Otto Dipl Ing Dr Tec Droegsler Füllung von Fugen in betonierten Flächen, Verfahren zu deren Herstellung sowie Band zur Durchführung des Verfahrens
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Cited By (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29377E (en) * 1972-11-16 1977-08-30 Frangible concrete-joint sealant package
US4058947A (en) * 1975-09-17 1977-11-22 Johns-Manville Corporation Fire resistant joint system for concrete structures
EP0100208A1 (en) 1982-07-23 1984-02-08 Alh Systems Limited Expansion joint
US4601604A (en) * 1982-07-23 1986-07-22 Alh Systems Limited Expansion joint
US4927291A (en) * 1987-01-09 1990-05-22 Belangie Michael C Joint seal for concrete highways
US4824283A (en) * 1987-01-09 1989-04-25 Belangie Michael C Sealed highway joint and method
US4784516A (en) * 1988-02-10 1988-11-15 Harco Research, Inc. Traffic bearing expansion joint cover and method of preparing same
US5007765A (en) * 1988-09-16 1991-04-16 Dow Corning Corporation Sealing method for joints
US4860508A (en) * 1989-01-24 1989-08-29 Jackson Thomas L A Flooring system and method for constructing same
US5024554A (en) * 1990-02-22 1991-06-18 Koch Materials Company Bridge joint construction
US5649784A (en) * 1995-06-16 1997-07-22 Pavetech International, Inc. Expansion joint system and method of making
US6491468B1 (en) * 1997-08-12 2002-12-10 Sealex, Inc. Foam backed joint seal system
RU2143044C1 (ru) * 1999-04-19 1999-12-20 Линер Андрей Феликсович Компенсатор деформаций сборных деревянных покрытий полов
FR2804456A1 (fr) * 2000-01-31 2001-08-03 Taraflex Procede pour la realisation d'un revetement de sol
US6849143B2 (en) 2001-02-27 2005-02-01 Gerflor Method for the producing of a floor covering
WO2002068772A1 (fr) * 2001-02-27 2002-09-06 Gerflor Procede pour la realisation d'un revetement de sol
US20040045664A1 (en) * 2001-02-27 2004-03-11 Gerflor Method for the producing a floor covering
US20060117692A1 (en) * 2002-08-23 2006-06-08 Trout John T Joint materials and configurations
US20040168387A1 (en) * 2003-02-28 2004-09-02 David Nelson Method and apparatus for sealing windows of a building
US20070151185A1 (en) * 2005-12-29 2007-07-05 Robinson Steven R Method and device for resilient seal system
US20080236092A1 (en) * 2007-03-29 2008-10-02 John Sich Method of manufacturing terrazzo tiles, terrazzo tiles and flooring system assembled with terrazzo tiles
US8033079B2 (en) * 2007-03-29 2011-10-11 FloorazzoTile, LLC Method of manufacturing terrazzo tiles, terrazzo tiles and flooring system assembled with terrazzo tiles
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JPS492320A (enrdf_load_stackoverflow) 1974-01-10
GB1406539A (en) 1975-09-17
CA974080A (en) 1975-09-09
DE2311611A1 (de) 1973-09-27

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