Improved composite fibers, and structural materials mixed with the improved composite fibers, are produced by an improved process that vertically texturizes and impregnates resin into the fibers without introducing any substantial amount of microbubbles in the resin. By using vertical impregnation and twisting of fiber strands with specific viscosity control, stronger composite fibers, in which substantially no microbubbles are trapped, are produced with improved tensile strength and lower variance in tensile strength, for use in strengthening structural concrete and other structural materials.

The disclosure relates to a method for the surface treatment of a polyester fiber, a modified polyester fiber obtained therefrom, and an engineered cementitious composite containing such modified polyester fibers. The method comprises subjecting the polyester fiber to an alkali hydrolysis to obtain hydrolyzed polyester fiber; applying a solution containing an acid cross-linker and a polyvinyl alcohol to the hydrolyzed polyester fiber, then curing to form a coating having a thickness of sub-micron or micron scale on the polyester fiber, thereby obtaining the modified polyester fiber.

The present invention relates to a polymer composition for forming fibers for reinforcement of cement-based composites, polymer fibers made from the composition and methods of making the polymer fibers. The polymer composition comprises an olefin polymer and a bonding agent comprising vinyl alcohol based polymer, a pozzolanic material or a combination thereof.

The present invention relates to pale-colored fiber cement products at least comprising white cement and synthetic fibers, wherein the synthetic fibers are pigmented with at least one dark pigment chosen from the group consisting of a black pigment, a brown pigment, a blue pigment, a red pigment, a green pigment and a gray pigment. The present invention further relates to methods for the production of these pale-colored fiber cement products as well as to uses thereof in the building industry.

There is provided a fiber-reinforced brittle matrix composite. The fiber-reinforced brittle matrix composite comprises a brittle matrix material (for example, a cementitious or ceramics material) and a coated fiber embedded in the brittle matrix material, wherein the coated fiber comprises a fiber (for example, polyethylene fiber, glass fiber, silicon carbide fiber, alumina fiber, mullite fiber) and a coating material (for example, carbon nanofibers, carbon nanotubes), which is non-covalently disposed on the fiber. A method for producing the fiber-reinforced brittle matrix composite is also provided. The method comprises providing a fiber, disposing a coating material on the fiber to form a coated fiber, wherein the coating material is non-covalently disposed on the fiber, and embedding the coated fiber in a brittle matrix material to obtain the fiber-reinforced brittle matrix composite.

The present invention relates to a polymer composition for forming fibers for reinforcement of cement-based composites, polymer fibers made from the composition and methods of making the polymer fibers. The polymer composition comprises an olefin polymer and a bonding agent comprising vinyl alcohol based polymer, a pozzolanic material or a combination thereof.

A construction product described herein includes a fiber core that includes a plurality of entangled glass fibers. The fiber core also includes a binder that bonds the plurality of entangled glass fibers together and an Aerogel material that is homogenously or uniformly disposed within the fiber core. In some instances, the fiber core includes between 40 and 80 weight percent of the Aerogel material. The construction product has an R-value of at least 6.5 per inch, a flame spread index of no greater than 5, and a smoke development index of no greater than 20 as measured according to the ASTM E-84 tunnel test.

A method of constructing a space construction has a preparing step, a first mixing step, a second mixing step, a matrix layer building step, a three-dimensional fiber webs paving step, and a gamma ray screening layer building step. Prepare an agitator, a strengthening material, a composite material, multiple three-dimensional fiber webs, and multiple gamma ray screening elements. Mix the strengthening material and the composite material to form a first building material. Mix the multiple gamma ray screening elements and soil on a planet to form a second building material. Build at least one matrix layer with the first building material. Pave two three-dimensional fiber webs on the at least one matrix layer. Build at least one gamma ray screening layer adjacent to one of the two three-dimensional fiber webs with the second building material. A product constructed by the method is also provided.

A method of constructing a space construction has a preparing step, a first mixing step, a second mixing step, a matrix layer building step, a three-dimensional fiber webs paving step, and a gamma ray screening layer building step. Prepare an agitator, a strengthening material, a composite material, multiple three-dimensional fiber webs, and multiple gamma ray screening elements. Mix the strengthening material and the composite material to form a first building material. Mix the multiple gamma ray screening elements and soil on a planet to form a second building material. Build at least one matrix layer with the first building material. Pave two three-dimensional fiber webs on the at least one matrix layer. Build at least one gamma ray screening layer adjacent to one of the two three-dimensional fiber webs with the second building material. A product constructed by the method is also provided.

Provided is a fiber material for cement reinforcement, configured such that a resin A containing an isocyanate compound as a constituent component is present inside a fiber bundled body, and a resin B containing an epoxy resin as a constituent component is present on a surface of the fiber bundled body. Further, it is preferable that the resin A contains a polyol or an epoxy compound as a constituent component in addition to the isocyanate compound, the resin B contains an acrylic-modified epoxy resin or a bisphenol-A epoxy resin as a main component, the fiber bundled body has a tensile strength of 7 cN/dtex or more, and the fiber bundled body includes 50 to 3,000 single fibers. The invention is also addressed to a concrete or mortar molded article using the above fiber material for reinforcement.