| 摘要 |
A dry raw mixture for manufacturing cellular fibro-concrete comprises components preferably in the following ratio: Portland cement 20-75%, mineralogical additives 70-20%, microsilica 2-10%', super-plastifier 0.6-3%, polypropylene fiber 0.08-0.15%, pore former 0.002-0.65%, and modifying ceolite additive 2- 10 %. The mineralogical additives can be represented by: fly ashes from coal combustion, ashes and slag, silica sand, limestone, and any combination thereof. The pore former can be represented by aluminum powder. The structure of modifying ceolite additive includes tetrahedrons SiO2 and AlO4. The raw mixture is further subjected to -intermingling and grinding in a conventional thin-powder grinder / mechanical activator, -bringing the mixture to a construction site, and -adding water to the mixture, thereby obtaining cellular fibro concrete. The method allows: -obtaining uniform mixtures, accelerating the hardening phase, -reducing costs due to avoiding the use of autoclave, steaming, and thermal curing equipment, -deploying inexpensive equipment for mixing concrete. |
