The Influence by the Method of Aggregate Enveloped with Cement of Multi-Step Mixing to Durability of High Performance Concrete

Concrete multi-step mixing technology means the construction technology of multi-step material mixing and multi-step stirring. Based on the tests about impermeability, frost resistance and anti-carbonization in the same material and the same proportioning using the method of aggregate enveloped with cement of multi-step mixing technology, it demonstrated that the method of aggregate enveloped with cement can obviously improve the performance of concrete on impermeability, frost resistance and carbonization resistance.