# Strength and Hydrophobicity of Superhydrophobic Concrete Based on Hydration Products and Surface Microstructure: Influence of Curing Temperature, Humidity, and Mesh-Coating

## TL;DR

This study explores how curing conditions and surface texture affect the strength and water-repelling properties of superhydrophobic concrete.

## Contribution

The study identifies optimal curing parameters and surface textures to balance mechanical strength and superhydrophobicity in cementitious materials.

## Key findings

- Curing temperature positively impacts material properties, while excessive humidity compromises superhydrophobicity.
- Micro- and nanoscale surface textures enhance superhydrophobicity without sacrificing compressive strength.
- Chemical stability ensures long-term performance of superhydrophobic concrete.

## Abstract

What are the main findings?
Curing conditions optimize mechanical strength and superhydrophobicity.Surface texture significantly enhances superhydrophobic properties.Chemical stability ensures long-term performance.

Curing conditions optimize mechanical strength and superhydrophobicity.

Surface texture significantly enhances superhydrophobic properties.

Chemical stability ensures long-term performance.

What are the implications of the main findings?
The standardized curing parameters for balanced performance.The implementation of precise texture control methods.The prioritization of morphology–chemistry synergy for durability.

The standardized curing parameters for balanced performance.

The implementation of precise texture control methods.

The prioritization of morphology–chemistry synergy for durability.

The interplay between curing conditions and performance in superhydrophobic cementitious materials remains a critical challenge, wherein hydrophobic agent incorporation enhances hydrophobicity but often compromises mechanical strength. This study aimed to investigate the effects of curing humidity and temperature on compressive strength and contact angle and clarify the influence of surface texture on hydrophobicity. SEM–EDS, FTIR, XRD, TG, and AFM were employed to analyze the specimens. Our results showed that curing temperature positively impacts material properties, whereas excessive curing humidity enhances compressive strength but negatively affects superhydrophobicity. Additionally, micro- and nanoscale coarse structures were found to be beneficial for improving superhydrophobicity. This study offers valuable insights into the most efficient mechanism through which to optimize the preparation process for desirable properties in superhydrophobic cementitious materials.