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摘要
In this paper, the effects of nano-TiO2 (NT)/styrene-acrylic emulsion (SAE) composites on strength and impermeability of cement-based materials are studied, and the underlying mechanism is analyzed through their influences on the hydration characteristics and microstructures of hardened cement pastes. Results show that mix SAE and NT could significantly improve the early strength degradation and hydration delay caused by mix SAE alone, reduce the total pore volume, and the amount of harmful and much harm pores, refine the pore structure, and increase the hydration degree of cement clinker and the polymerization degree of C-S-H gels, so as to improve the strength and anti-permeability. Such results have some guiding significance for the composite application of nanoparticle/polymer in cement-based materials. ? 2021, Editorial Board of Journal of Functional Materials. All right reserved.
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