| abstract |
The invention discloses a preparation method of concrete without negative strength influence and high internal curing efficiency, which adopts the technical scheme that a skeleton structure curing agent is firstly subjected to pre-water absorption, then is premixed with river sand and gravel, and finally is sequentially added with cement and the balance of water and is uniformly stirred to obtain the concrete; the preparation method of the framework structure curing agent comprises the following steps of uniformly mixing raw material powder, a pore regulator and water to obtain a raw material mass, and drying, calcining and crushing to obtain the porous rigid PM framework; and (3) immersing the porous rigid PM framework into liquid SAP gel for loading, and then drying to obtain the framework structure curing agent with the rigid framework structure. The invention has simple and reliable process, low production cost, high maintenance efficiency and no negative effect of strength. |