Gehigarri polimerikoen sintesia eta zementuaren hidratazioan daukaten eraginaren azterketa

Abstract

Polymeric additives such as polycarboxylate ethers (PCE) are widely used to improve the properties of cement-based materials. PCEs not only improve the workability of the cement paste, but also delay the hydration of the cement. In this work, we synthesized PCEs with different structures, by means of free-radical polymerization, and then analyzed the effect they have on an Ordinary Portland Cement (OPC) cement and the main crystalline phases of that cement. It has been observed that on OPC the hydration delay is proportional to the carboxylate dose, and that all PCEs can be adjusted to a master curve. When analyzing the crystalline phases individually, however, this is not fulfilled, as each side chain length has its own curve.