Fabricated cement fiberboard composite wallboard, manufacturing process and outer wall

The invention provides a fabricated cement fiberboard composite wallboard. The composite wallboard is composed of cement fiberboards and foam concrete, the cement fiberboards serve as shells of the composite wallboard to be attached to the front face and the back face of the foam concrete, and a light steel keel stress structure is additionally arranged in the foam concrete; the foam concrete is prepared from the following components in parts by weight: 80-90 parts of quick-hardening Portland cement, 4-5 parts of lime, 0.4-0.5 part of ceramsite, 3-7 parts of a slurry stabilizer, 48-55 parts ofwater and 0.1-0.5 part of foam; and the left side and the upper side of the composite wallboard are provided with convex rabbets, and the right side and the lower side of the composite wallboard areprovided with concave rabbets. The super-long service life is ensured, the adaptability to various climates is better, and the fabricated cement fiberboard composite wallboard can be widely applied tobuilding places with high