Construction Research & Technology Gmbh

Emmanuel Attiogbe

Frank Apicella

William Gold

Steve Schaef

Charles Kerobo

John L Randolph

Stefan Muessig

Thomas Chirayil

Roger Reinicker

Dan Vojtko

Daniel Vojtko

A pipe joint and elongated cementitious pipe is formed by joining abutting ends of adjacent pipe sections with a fiber reinforced composite material without the need for the pipe sections to have other connection means, such as the standard bell and spigot end connections. Also disclosed is a cementitious pipe including at least two cementitious pipe sections having ends that are joined together with a fiber reinforced polymer composite material. The cementitious pipe sections and resulting cementitious pipe may have a substantially uniform wall thickness and substantially uniform inner and outer diameters near the opposite ends of the pipe sections. Also provided is a method for joining cementitious pipe sections with a fiber reinforced composite material to manufacture an elongated cementitious pipe, such as an elongated concrete pipe.

Pipe joint, pipe and method of joining pipe sections

A fiber reinforced polymer composite joining member for joining sections of pipe together to form an elongated pipe is disclosed. A pipe joint and elongated pipe includes at least two pipe sections having ends that are joined together with the joining member is also disclosed. The pipe joint and elongated pipe are formed by joining abutting ends of adjacent pipe sections with the joining member without the need for the adjacent pipe sections to have other connection means, such as standard bell and spigot end connections. Also provided is a method for joining pipe sections with the joining member to make an elongated pipe.

Pipe section joining member, pipe joint and elongated pipe

A composite material includes a cementitious composition and a plurality of fibers disposed in the cementitious composition. Each of the plurality of fibers includes a plastic component. Each of the plurality of fibers further includes a surfactant and a metal oxide, each independently heterogeneously dispersed throughout each of the plurality of fibers. A method of forming the composite material includes the step of combining the plastic component, the surfactant, and the metal oxide, to form the plurality of fibers. The method further includes the step of disposing the plurality of fibers in the cementitious composition to form the composite material.

Cementitious composite material including a plurality of filled fibers

An elongated pipe may include a fiber reinforced polymer composite joining member for joining sections of pipe together. A pipe joint and elongated pipe may include at least two pipe sections having ends that are joined together with the joining member. The pipe joint and elongated pipe are formed by joining abutting ends of adjacent pipe sections with the joining member without the need for the adjacent pipe sections to have other connection means, such as standard bell and spigot end connections. A method may include joining pipe sections with the joining member to make an elongated pipe.

A cementitious composition including at least one cementitious material and at least one crack reducing admixture including: (i) from 0 to about 5 weight percent of at least one alcohol, based on the total weight of the admixture excluding water; and (ii) a compound having the chemical structure of formula (III): wherein: v is an integer from 0 to 50 and w is an integer from 0 to 50, with the proviso that the sum of v and w is at least 1 but not greater than 50. Also, methods of making the cementitious composition, reducing or eliminating the formation of cracks in a cementitious composition as the cementitious composition cures, and limiting the size of cracks which form in a cementitious composition as the cementitious composition cures using an admixture for cementitious compositions as described herein.

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Solon, OH, United States of America

Emmanuel Attiogbe