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通过对水泥浆体水化热、化学结合水、酸溶法测定的化学未溶量以及碱环境条件下陶瓷抛光砖粉硅、铝离子的溶出量及溶出规律的测定,研究了抛光砖粉作为辅助胶凝材料的火山灰性,并将之与粉煤灰进行对比。结果表明:在水化早期,抛光砖粉火山灰反应程度较高;随水化龄期的延长,火山灰反应程度逐渐减弱。抛光砖粉的掺入可加速水泥早期的水化,降低水泥水化热,其掺量越大,对水泥水化热降低越显著。在同等掺量、水化28d条件下,抛光砖粉的火山灰反应程度较粉煤灰的高,抛光砖粉对水泥水化的促进作用较粉煤灰的强。
Based on the determination of the hydration heat of cement paste, chemically bound water, the chemical undissolved content measured by acid dissolution method and the elution amount and dissolution rule of silicon and aluminum ions in ceramic polishing powder under alkaline environment, Aids in the pozzolanic properties of cementitious material and compares it with fly ash. The results show that in the early hydration stage, polishable brick powder has a higher degree of volcanic ash reaction. With the extension of hydration age, the degree of volcanic ash reaction gradually weakened. The incorporation of polishing powder can accelerate the early hydration of cement and reduce the hydration heat of cement. The greater the dosage is, the more significant the reduction of cement hydration heat. Under the same dosage and hydration for 28d, the polluting degree of polishable brick powder is higher than that of fly ash, and the promoting effect of polish brick powder on cement hydration is stronger than that of fly ash.