A filament winding technique for manufacturing cement based cross-ply laminates

A filament winding system was developed for manufacturing various types of fiber/cement composite materials. The system may be easily configured using the computer software to use continuous fiber composite laminates, cross-ply and angle ply laminates, pipes, and pultruded sections. The electrical and mechanical components of the system are discussed in detail. Cement based composite laminates are manufactured using continuous glass and polypropylene fibers. Tensile stress-strain response was measured using closed-loop strain controlled tests. Results indicate that tensile strength of composites can exceed 50 MPa using 5% alkali-resistant (AR) glass fibers. The ultimate strain capacity can also be increased by varying the stacking sequences. Ultimate strain capacities of the order of 2% were obtained. The experimental observations agree favorably with the theoretical predictions based on the ply discount method.