Impact of an SRA (hexylene glycol) on irreversible drying shrinkage and pore solution properties of cement pastes

Cementitious materials shrink when exposed to decreasing relative humidities, which may result in cracking. Shrinkage reducing admixtures (SRAs) can be used reduce this drying shrinkage. Although many studies have shown that SRAs the surface tension of pore solution, effects on other solution properties and their relationship shrinkage been poorly characterized. In work, we investigate impact an SRA (hexylene glycol) re-humidification a cement paste over extended humidity range. The reduction first by depends humidity. also significantly reduces irreversible We concluded impacts acting capillary forces, specific range those forces occur, potentially stresses through wall adsorption.