HORMIGON QUE COMPRENDE FIBRAS ORGANICAS DISPERSADAS EN UNA MATRIZ DE CEMENTO, MATRIZ DE CEMENTO DEL HORMIGON Y PREMEZCLAS.

    公开(公告)号:ES2205811T5

    公开(公告)日:2010-12-27

    申请号:ES99918063

    申请日:1999-05-12

    Abstract: Hormigón que comprende una matriz de cemento endurecida en la cual están dispersadas fibras orgánicas, que se obtiene al mezclar con agua una composición que contiene además de las fibras: (a) cemento, (b) elementos granulares, (c) elementos finos con reacción puzolánica, (d) por lo menos un agente dispersante y caracterizado porque: (1) los elementos granulares (b) tienen un tamaño de grano máximo D de 2 mm como máximo, preferentemente 1 mm como máximo, (2) los elementos finos con reacción puzolánica (c) tienen un tamaño de partícula elemental de 20 m como máximo, preferentemente 1 m como máximo, y porque: (3) el porcentaje en peso del agua con respecto al peso acumulado de cemento (a) y los elementos finos de reacción puzolánica (c) está comprendido entre 8% y 25%, (4) las fibras orgánicas tienen una longitud individual l de por lo menos 2 mm y una relación I/ de por lo menos 20, siendo el diámetro de las fibras, (5) la cantidad de fibras es tal que su volumen representa 8% como máximo del volumen del hormigón después de fraguar, (6) la relación R entre la longitud de las fibras promedio L y el tamaño de grano máximo D de los elementos granulares es de por lo menos 5.

    Concrete with metal fibers and a cement matrix

    公开(公告)号:FR2771406A1

    公开(公告)日:1999-05-28

    申请号:FR9714928

    申请日:1997-11-27

    Applicant: BOUYGUES SA

    Abstract: Concrete consists of a strong cement matrix in which metallic fibers are dispersed. The concrete is obtained by mixing with water a composition comprising: (a) cement; (b) granular components with maximum grain size (D) no more than 2 mm, preferably no more than 1 mm; (c) 'slag' type fillers with particle size no more than 1 microns , preferably no more than 0.5 microns ; (d) components capable of improving the tenacity of the matrix selected from those with average size of no more than 1 mm; and (e) at least one dispersing agent. The concrete meets the following conditions: (f) ratio of water (E) to components (a) and (c) = 8-24 wt.%; (g) fibers have individual lengths (l) of at least 2 mm and l/d ratio (d = diameter) of at least 20; (h) ratio (R) of average fiber length to maximum grain size of granular components = at least 10; and (i) volume of fibers is preferably less than 3.5% volume of concrete. An Independent claim is also included for a pre-mixture for making the concrete.

    Concrete comprising organic fibers in cement matrix

    公开(公告)号:FR2778654A1

    公开(公告)日:1999-11-19

    申请号:FR9806092

    申请日:1998-05-14

    Applicant: BOUYGUES SA

    Abstract: Concrete comprises organic fibers dispersed in a hardened cement matrix. Concrete comprising organic fibers dispersed in a hardened cement matrix is obtained by mixing with water composition comprising fibers and: (a) cement; (b) granular components with maximum size, D, of no more than 2 mm, preferably no more than 1 mm; (c) fine components from ash with size no greater than 20 microns preferably no greater than 1 microns ; and (d) at least one dispersing agent; said composition meeting the following conditions: (e) wt. % water with respect to total weight of (a) and (c) = 8-25; (f) organic fibers have individual length, l , of at least 2 mm and ratio l\/ phi ( phi = diameter) at least = 20; (g) ratio, R, of mean length of fibers to D at least = 5; and (h) quantity of fibers is such that their volume represents no more than 8% total volume of concrete. An Independent claim is also included for pre-mixture for preparing cement matrix for making said concrete.

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