A kind of anti-seepage and anti-cracking concrete and preparation method thereof

Abstract

The invention relates to the field of impermeable concrete, in particular to an impermeable and crack-resistant concrete and a preparation method thereof. The impermeable and crack-resistant concrete comprises cement, river sand, crushed stone, fly ash, mineral powder, water, and cellulose effect agent, swelling agent and polypropylene staple fiber, sodium dioctyl succinate sulfonate, polycarboxylate water reducer. A method for preparing impermeable and crack-resistant concrete is as follows: firstly modifying polypropylene short fibers to obtain modified polypropylene short fibers; Then mix the polycarboxylate water reducing agent, water, sodium dioctyl succinate sulfonate and cellulose synergist to obtain an admixture solution, and mix the admixture solution with cement, fly ash and mineral powder evenly The cement slurry is obtained, and the cement slurry is added into the dry material and stirred evenly to obtain an impermeable and crack-resistant concrete. The present application has the effect of improving the crack resistance of the impermeable concrete.

Description

technical field [0001] The invention relates to the field of impermeable concrete, in particular to an impermeable and crack-resistant concrete and a preparation method thereof. Background technique [0002] Impermeable concrete refers to the concrete with high density, which makes it difficult for water to penetrate through. Impermeable concrete needs to be able to resist hydrostatic pressure of at least 0.6MPa. Impermeable concrete is widely used in underwater piles, underwater engineering and other fields. [0003] The commonly used method to improve the impermeability is to increase the amount of glue material in the concrete mix and increase the air content of the concrete, but the increase of the air content and the reduction of the water-binder ratio increase the risk of cracks in the concrete, or the impermeable concrete is in the concrete. The severe shrinkage during the hydration process leads to cracks in the impermeable concrete, and these cracks will greatly red...

AI Technical Summary

Problems solved by technology

[0003] The commonly used method to improve the impermeability is to increase the amount of glue in the concrete mix ratio and increase the air content of the concrete, but the increase in the air content and the decrease in the water-binder ratio both increase the risk of cracks in the concrete, or the impermeable concrete is The severe shrinkage during the hydration process leads to cracking of the impermeable concrete, and these cracks will greatly reduce the workability and durability of the impermeable concrete