CH500143A - Cement-based moldable composition and its use for the manufacture of a cementitious material - Google Patents
Cement-based moldable composition and its use for the manufacture of a cementitious materialInfo
- Publication number
- CH500143A CH500143A CH1024066A CH1024066A CH500143A CH 500143 A CH500143 A CH 500143A CH 1024066 A CH1024066 A CH 1024066A CH 1024066 A CH1024066 A CH 1024066A CH 500143 A CH500143 A CH 500143A
- Authority
- CH
- Switzerland
- Prior art keywords
- cement
- water
- composition
- resin
- manufacture
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 37
- 239000004568 cement Substances 0.000 title claims description 20
- 239000000463 material Substances 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000003995 emulsifying agent Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 3
- 239000012783 reinforcing fiber Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- NXIFLHKNGSUALF-UHFFFAOYSA-N 2-[(2,3-dibromo-4-methylphenoxy)methyl]oxirane Chemical compound BrC1=C(Br)C(C)=CC=C1OCC1OC1 NXIFLHKNGSUALF-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 229940071676 hydroxypropylcellulose Drugs 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229960001124 trientine Drugs 0.000 description 1
Classifications
-
- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/12—Condensation polymers of aldehydes or ketones
- C04B26/122—Phenol-formaldehyde condensation polymers
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
Composition moulable à base de ciment et son utilisation
pour la fabrication d'un matériau cimenteux
La présente invention est relative à une composition moulable à base de ciment et son utilisation pour la fabrication d'un matériau cimenteux ayant une résistance améliorée aux charges. Ladite composition est utilisable également avec avantage in situ là où le ciment peut être utilisé, par exemple pour le revêtement d'un bâtiment ou d'un tunnel. Avec la composition selon l'invention oh peut en outre fabriquer des tubes et des tuyaux pour toutes sortes d'utilisations.
La composition selon l'invention est caractérisée en ce qu'elle contient en plus du ciment, du sable fin, un minéral fibreux, de l'eau, une résine époxy sous forme liquide et insoluble dans l'eau, un agent de réticulation pour cette résine et une substance colloïdale soluble dans l'eau pouvant servir comme agent de rétention de l'eau dans le ciment et comme agent émulsifiant pour la résine dans l'eau.
Le liant en résine époxy représente de préférence 5 à 35 % en volume des constituants de la composition. Ladite composition est renforcée par des matériaux d'armature fibreux, tels que des fibres d'amiante ou de verre.
Ladite composition peut être préparée de la façon suivante:
Ces résines époxy sont mélangées au ciment dans une proportion d'une partie en poids de résine pour quatre parties de ciment et jusqu'à deux parties de résine pour une partie de ciment. Ce mélange de ciment et de résine époxy est ensuite mélangé avec des fibres d'armature et du sable fin et on utilise une quantité convenable d'eau pour obtenir l'hydratation nécessaire de la composition.
L'eau utilisée contient un agent de réticulation à base de polyamine et une substance colloïdale servant comme agent de rétention de l'eau dans le ciment et comme agent émulsifiant pour la résine dans l'eau.
La composition finale ainsi obtenue contient un système inorganique de cristaux enchevêtrés ainsi qu'un système organique de liaison à base de résine. L'utilisation d'une résine époxy contenant du brome, formant une partie de la totalité de la résine utilisée, peut améliorer les propriétés d'incombustibilité de la composition, la résine ayant en outre pour effet d'améliorer la résis- tance à l'humidité et de donner lieu à une plus graride flexibilité avec un module de Young élevé.
La composition selon l'invention contient une addl- tion de matière colloldÅale-soluble dans l'èau ex servant d'agent de rétention de l'eau, cette matière d'addition étant choisie de façon à agir comme un émulsifiant de la résine époxy dans une composition humidifiée à base de ciment, et de préférence de façon à se combiner avec la résine époxy lorsque la composition à base de ciment est ensuite chauffée aux fins de polymérisation. Suivant cette caractéristique de l'invention on choisit, parmi les agents connus de rétention de l'eau, ceux dont la composition chimique donne lieu aux effets susmentionnés.
Ladite composition moulable à base de ciment peut être utilisée pour la fabrication d'un matériau cimenteux ayant une résistance améliorée aux charges. Cette utilisation est caractérisée en ce que l'on moule cette composition, obtenant un produit d'une forme désirée, et durcit ce produit par la chaleur, la résine époxy se combinant avec la substance colloidale soluble dans l'eau pendant ledit durcissement.
Un élément de construction fabriqué à partir de la composition selon l'invention peut présenter toutes sections transversales appropriées, par exemple rectangulaire, circulaire, en H en T ou en I, cet élément pouvant être rectiligne ou courbé dans le sens de la longueur.
Pour former ladite composition on peut utiliser un dispositif d'extrusion à vis multiples dans lequel, en raison des faibles efforts de cisaillement pendant le fonc tionnement, le dégagement de chaleur est réduit au minimum de sorte que le durcissement prématuré du mélange est évité. Un autre avantage réside dans une mise en route facile de l'alimentation et dans une propulsion plus positive du matériau (c'est-à-dire qu'une quantité faible ou nulle de matériau échappe aux filets de vis) que dans un dispositif d'extrusion à vis simples, car le dispositif d'extrusion à vis multiples peut être considéré comme une pompe à engrenage allongée axialement. La présence de la résine a pour effet d'accélérer l'extrusion.
L'extrusion est effectuée à travers une filière en acier montée à l'extrémité de la presse à extrusion, et un tamis est de préférence interposé entre la presse d'extrusion à vis multiples et la filière afin d'améliorer l'homogénéisation de la composition. La filière est profilée pour faciliter l'extrusion et empêcher l'apparition de contre-pression excessive et la forme des vis est telle que l'air emprisonné est expulsé de la composition pendant le passage de celle-ci à travers le dispositif d'extrusion. De cette façon, la désaération du ciment avant extrusion est éliminée.
Les caractéristiques ci-dessus sont particulièrement souhaitables lorsqu'on utilise dans la composition selon l'invention comme minéral fibreux des fibres d'armature en amiante ou en verre, car il se produit un important effet d'orientation dans les fibres d'armature pendant l'extrusion qui donnent lieu à une résistance accrue dans la direction d'extrusion du mélange. Des longueurs convenables du produit extrudé peuvent être coupées et stockées à plat pour permettre le durcissement de la composition. Un durcissement accéléré peut être obtenu si le produit extrudé traverse une zone de chauffage dans laquelle la température est maintenue à une valeur n'excédant pas 900 C. Suivant une variante, on peut utiliser un traitement dans un autoclave de la manière habituelle pour les compositions à base de ciment.
Comme dit plus haut, la composition selon l'invention contient certaines matières colloïdales solubles dans l'eau pour obtenir des mélanges plus onctueux et pour empêcher la déshydratation, c'est-à-dire le ressuage de l'eau au repos ou lorsque la composition est soumise à une pression par utilisation de la composition, par exemple dans le cas d'un moulage sous pression ou par extrusion.
L'exemple ci-dessous illustre la composition moulable à base de ciment selon l'invention et pouvant être utilisée pour la fabrication d'éléments de construction; les proportions indiquées étant données en poids:
Composition
Ciment de Portland 80
Sable fin 80
Fibre d'amiante 5
Résine époxy liquide 15
Triéthylène tétramine 2,1
Dibromo-crésyl-glycidyl-éther 3
Méthyl-hydroxypropyl-cellulose 2
Eau 34
Cement-based moldable composition and its use
for the manufacture of cementitious material
The present invention relates to a moldable cement-based composition and its use for the manufacture of a cementitious material having improved resistance to loads. Said composition can also be used with advantage in situ where cement can be used, for example for coating a building or a tunnel. With the composition according to the invention oh can furthermore manufacture tubes and hoses for all kinds of uses.
The composition according to the invention is characterized in that it contains in addition to cement, fine sand, a fibrous mineral, water, an epoxy resin in liquid form and insoluble in water, a crosslinking agent for this resin is a water soluble colloidal substance which can be used as a water retention agent in cement and as an emulsifying agent for the resin in water.
The epoxy resin binder preferably represents 5 to 35% by volume of the constituents of the composition. Said composition is reinforced by fibrous reinforcing materials, such as asbestos or glass fibers.
Said composition can be prepared as follows:
These epoxy resins are mixed with the cement in a proportion of one part by weight of resin to four parts of cement and up to two parts of resin to one part of cement. This mixture of cement and epoxy resin is then mixed with reinforcing fibers and fine sand and a suitable amount of water is used to obtain the necessary hydration of the composition.
The water used contains a polyamine-based crosslinking agent and a colloidal substance serving as a water-retaining agent in cement and as an emulsifying agent for the resin in water.
The final composition thus obtained contains an inorganic system of entangled crystals as well as an organic resin-based binding system. The use of an epoxy resin containing bromine, forming part of the whole resin used, can improve the incombustibility properties of the composition, the resin further having the effect of improving the resistance to fire. humidity and result in greater flexibility with a high Young's modulus.
The composition according to the invention contains an addition of water-soluble colloidal-soluble material ex serving as a water retention agent, this addition material being chosen so as to act as an emulsifier of the epoxy resin. in a wetted cement-based composition, and preferably so as to combine with the epoxy resin when the cement-based composition is subsequently heated for polymerization. According to this characteristic of the invention, those whose chemical composition gives rise to the aforementioned effects are chosen from among the known water retention agents.
Said cement-based moldable composition can be used for the manufacture of a cementitious material having improved resistance to loads. This use is characterized by molding this composition, obtaining a product of a desired shape, and curing this product by heat, the epoxy resin combining with the water-soluble colloidal substance during said curing.
A construction element made from the composition according to the invention may have any suitable cross sections, for example rectangular, circular, H, T or I, this element possibly being rectilinear or curved in the direction of the length.
To form said composition one can use a multi-screw extrusion device in which, due to the low shear forces during operation, the release of heat is minimized so that premature hardening of the mixture is avoided. Another advantage is that the feed is easily started and the material is propelled more positively (that is, little or no material escapes the screw threads) than in a device for feeding the material. Single screw extrusion, because the multiple screw extrusion device can be viewed as an axially elongated gear pump. The presence of the resin has the effect of accelerating the extrusion.
The extrusion is carried out through a steel die mounted at the end of the extrusion press, and a screen is preferably interposed between the multi-screw extrusion press and the die in order to improve the homogenization of the extrusion press. composition. The die is contoured to facilitate extrusion and prevent the occurrence of excessive back pressure and the shape of the screws is such that trapped air is expelled from the composition as it passes through the extrusion device. . In this way, the deaeration of the cement before extrusion is eliminated.
The above characteristics are particularly desirable when asbestos or glass reinforcing fibers are used in the composition according to the invention as a fibrous mineral, since there is a strong orientation effect in the reinforcing fibers during extrusion which gives rise to increased resistance in the direction of extrusion of the mixture. Suitable lengths of the extrudate can be cut and stored flat to allow the composition to cure. Accelerated hardening can be obtained if the extruded product passes through a heating zone in which the temperature is maintained at a value not exceeding 900 C. Alternatively, treatment in an autoclave can be used in the usual manner for the compositions. cement-based.
As said above, the composition according to the invention contains certain colloidal materials soluble in water to obtain smoother mixtures and to prevent dehydration, that is to say the bleeding of water at rest or when the The composition is subjected to pressure by use of the composition, for example in the case of die-casting or by extrusion.
The example below illustrates the moldable cement-based composition according to the invention which can be used for the manufacture of building elements; the proportions indicated being given by weight:
Composition
Portland cement 80
Fine sand 80
Asbestos fiber 5
Liquid epoxy resin 15
Triethylene tetramine 2.1
Dibromo-cresyl-glycidyl-ether 3
Methyl-hydroxypropyl-cellulose 2
Water 34
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29945/65A GB1158591A (en) | 1965-07-14 | 1965-07-14 | Improvements in Thermal Insulation |
| GB34642/65A GB1158592A (en) | 1965-07-14 | 1965-08-12 | Improvements in or relating to Building Constructional Units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH500143A true CH500143A (en) | 1970-12-15 |
Family
ID=26260172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1024066A CH500143A (en) | 1965-07-14 | 1966-07-14 | Cement-based moldable composition and its use for the manufacture of a cementitious material |
Country Status (9)
| Country | Link |
|---|---|
| BE (1) | BE684063A (en) |
| CH (1) | CH500143A (en) |
| DE (1) | DE1609793A1 (en) |
| ES (1) | ES329125A1 (en) |
| GB (2) | GB1158591A (en) |
| IL (1) | IL26137A (en) |
| LU (1) | LU51548A1 (en) |
| MC (1) | MC604A1 (en) |
| OA (1) | OA02105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987000828A1 (en) * | 1985-08-08 | 1987-02-12 | Aktieselskabet Aalborg Portland-Cement-Fabrik | A shaped article and a method for producing the article |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2410605C2 (en) * | 1973-03-16 | 1986-04-24 | ISOVOLTA Österreichische Isolierstoffwerke AG, Wiener Neudorf | Building material body and process for its manufacture |
| DE2814814A1 (en) * | 1978-04-06 | 1979-10-18 | Basf Ag | NON-COMBUSTIBLE INSULATION |
| DE2814892A1 (en) * | 1978-04-06 | 1979-10-18 | Basf Ag | NON-COMBUSTIBLE INSULATION |
| DE2815706C2 (en) * | 1978-04-12 | 1987-02-19 | Kao Soap Co., Ltd., Tokio/Tokyo | Method for increasing the flexural strength of cement masses |
| FR2451428B1 (en) * | 1979-03-14 | 1986-06-13 | Volckaert Daniel | PROCESS FOR THE MANUFACTURE OF A FIRE-RESISTANT MATERIAL FOR THE IMPLEMENTATION OF CONDUITS OR WALLS INTENDED FOR CONSTRUCTION AND PRODUCTS THUS OBTAINED |
| DE8700170U1 (en) * | 1987-01-03 | 1987-05-27 | PAG Presswerk AG, 45356 Essen | Ceiling cladding elements |
| DE8700413U1 (en) * | 1987-01-09 | 1987-04-09 | PAG Presswerk AG, 45356 Essen | Floor slab |
| DE8700726U1 (en) * | 1987-01-16 | 1987-05-21 | Pag Presswerk Ag, 4300 Essen | Wall cladding elements |
| DE8701196U1 (en) * | 1987-01-26 | 1987-06-25 | PAG Presswerk AG, 45356 Essen | Fire insulation board |
| FR2627177A1 (en) * | 1988-02-11 | 1989-08-18 | Lievremont Henri | |
| FR2666107B1 (en) * | 1990-08-22 | 1997-11-21 | Daussan & Co | PROCESS FOR REINFORCING THE RESISTANCE OF HOLLOW METAL STRUCTURES IN THE EVENT OF FIRE, AND HOLLOW METAL STRUCTURES THUS REINFORCED. |
| DE4337264A1 (en) * | 1993-11-02 | 1995-05-04 | Upat Max Langensiepen Kg | Mortar for two-component systems |
| US6103003A (en) * | 1998-03-28 | 2000-08-15 | Ledbetter; C. Burgess | Textured coating and method of applying same |
| AU2002309455A1 (en) * | 2002-06-03 | 2003-12-19 | Chong Hak Tay | A fire resistant insulation material |
| KR101147270B1 (en) * | 2010-03-05 | 2012-05-18 | 주식회사 경동세라텍 | Expanded perlite for low temperature and cool keeping insulator |
| CN104291735A (en) * | 2013-07-19 | 2015-01-21 | 刘峰 | Heat insulation material |
-
1965
- 1965-07-14 GB GB29945/65A patent/GB1158591A/en not_active Expired
- 1965-08-12 GB GB34642/65A patent/GB1158592A/en not_active Expired
-
1966
- 1966-07-12 IL IL26137A patent/IL26137A/en unknown
- 1966-07-13 LU LU51548A patent/LU51548A1/xx unknown
- 1966-07-13 BE BE684063D patent/BE684063A/xx unknown
- 1966-07-13 DE DE19661609793 patent/DE1609793A1/en active Pending
- 1966-07-14 ES ES0329125A patent/ES329125A1/en not_active Expired
- 1966-07-14 MC MC631A patent/MC604A1/en unknown
- 1966-07-14 CH CH1024066A patent/CH500143A/en not_active IP Right Cessation
- 1966-07-14 OA OA52530A patent/OA02105A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987000828A1 (en) * | 1985-08-08 | 1987-02-12 | Aktieselskabet Aalborg Portland-Cement-Fabrik | A shaped article and a method for producing the article |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1609793A1 (en) | 1969-12-18 |
| LU51548A1 (en) | 1966-09-13 |
| BE684063A (en) | 1966-12-16 |
| MC604A1 (en) | 1967-03-21 |
| GB1158591A (en) | 1969-07-16 |
| OA02105A (en) | 1970-05-05 |
| GB1158592A (en) | 1969-07-16 |
| ES329125A1 (en) | 1967-05-01 |
| IL26137A (en) | 1970-11-30 |
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