CAJ | 학술논문

概述了小角散射的基本原理,总结了小角散射数据纪尼叶(Guinier)近似处理和Porod近似处理及其应用,综述了利用小角散射技术研究硬化水泥浆体纳米凝胶粒子尺寸、凝胶粒子分形结构和孔隙孔径分布.结果表明,小角散射技术能在无破坏、无侵入条件下实时、重复表征硬化水泥浆体纳米结构特征及其演化.受到有效散射中子源获取困难、仪器投资巨大及分析测试模型过于简化等条件的影响,小角散射技术特别是中子小角散射技术在硬化水泥浆体微结构表征与应用上的研究需要不断发展和完善.
개술료소각산사적기본원리,총결료소각산사수거기니협(Guinier)근사처리화Porod근사처리급기응용,종술료이용소각산사기술연구경화수니장체납미응효입자척촌、응효입자분형결구화공극공경분포.결과표명,소각산사기술능재무파배、무침입조건하실시、중복표정경화수니장체납미결구특정급기연화.수도유효산사중자원획취곤난、의기투자거대급분석측시모형과우간화등조건적영향,소각산사기술특별시중자소각산사기술재경화수니장체미결구표정여응용상적연구수요불단발전화완선.
This paper summarizes the principal theory of small-angle scattering technique (SAS), including Guinier approximation, Porod approximation and function of the two approximations. Application of SAS in nano-CSH particle diameter, fractal structure of nano-CSH and pore structure distribution in hardened cement pastes is also described in the paper. Advantage of the technique is nondestructive, noninvasive, and could be used repeatedly in the real-time characterization of the microstructure and its evolution. SAS, especially small-angle neutron scattering technique (SANS), also has its limit because effective neutron source is difficult to obtain, analysis of test model is too simplistic far from real fact, and experiment is costly and non-portable.