表面活性剂在碱矿渣水泥系统中的吸附特征研究

Adsorption characteristics of surfactant in alkali-activated slag cement systems

研究了木质素磺酸钙和萘系两种表面活性剂在碱矿渣水泥系统中的吸附特征,及其对该系统ζ电位的影响。结果表明:碱组分为NaOH和水玻璃的碱矿渣水泥系统中,矿渣颗粒对这两种表面活性剂的吸附量均随氧化钠当量的增加而降低;碱当量相同时,水玻璃碱矿渣水泥系统中,表面活性剂的吸附量随水玻璃模数提高而降低。NaOH为碱组分的碱矿渣水泥系统中,两种表面活性剂均使系统ζ电位绝对值增加。

The adsorption characters of calcium lignosulfonate and naphthalene-based surfactant in alkali-activated slag cement systems were studied, and the effects of surfactant on ζ potential of the systems were investgated.The results show that the amount of surfactants adsorbed in alkali-activated slag cement systems decreases as the alkali-equivalent increases when NaOH and water glass were used as alkali activators.The amount of surfactants adsorbed in alkali activated salg system decreases as the modulus of water glass increase when alkali-equivalent was the same.The surfactants result to the absolute value of ζ potential of alkali-activated slag cement system increases when NaOH was used as activator.