固体废物蒸压系统的红外光谱研究

Infrared Spectrum of Autoclaved Systems for Solid Wastes

选用钢渣(氧化渣)、废混凝土等固体废物为研究对象,掺入一定量的熟石灰制成样品,测定其蒸压试样结合水量和强度,通过红外光谱以及化学分析等方法,对不同固体废物及其蒸压试样进行了分析,并用最大结合水量来表示原料体系蒸压反应能力,研究了固体废物红外光谱强吸收区的Si—O伸缩振动频率与其水热反应能力及强度的关系。结果表明,含有高温热历史形成具有活性晶体的固体废物钢渣,红外光谱强吸收区Si—O键伸缩振动峰与其蒸压试样结合水量相关,其试样强度随红外光谱强吸收区Si—O键伸缩振动频率的降低而提高。3种废混凝土的红外光谱特征峰相同,其蒸压试样的水化产物均相同,其最大强度也相同。

Different solid wastes such as steel slag(oxidizing slag),waste concrete and their autoclaved waste samples were studied as object,samples was made and mixed with lime,measured bound water and compressive strength of the autoclaved samples,and the relationship between reaction capability and strong absorbance Si-O bonds stretching vibration band was studied with the methods of infrared spectra(IR)and chemical analysis.The results indicate that for containing activity crystal or amorphous with high-temperature heat,bound water amount of their autoclaved samples is related to strong absorbance Si-O bonds stretching vibration band,and compressive strength of the autoclaved samples increases with strong absorbance Si-O bonds stretching vibration band.IR characteristic peaks of waste concretes are almost the same,and there are similar hydrate products and maximum compressive strength for different samples.