High-strength high-toughness cement-based material and preparation method thereof

The invention discloses a high-strength high-toughness cement-based material and a preparation method thereof. The material is prepared from, by weight, 10-20 parts of polymer emulsion, 70-80 parts ofcement, 5-10 parts of carbon fiber, 2-8 parts of phenolic resin, 1-5 parts of ethylene carbonate, 0.3-1.2 parts of coupling agent, 0.2-0.6 part of coupling agent and 20-30 parts of water. Accordingly, by means of compound mixing of the polymer emulsion and the carbon fiber, the concrete matrix flexibility and the bonding strength of steel fiber and concrete which are obtained after the concrete cracks are increased at the same time, and then the purpose of increasing the concrete toughness is achieved; the polymer emulsion can improve the cement matrix toughness, the polymer is subjected to dehydration hardening in the concrete to form a three-dimensional continuous membrane-shaped structure and interwoven in and inserted into the concrete, and then the concrete can show high tension, good plasticity and high imp