混凝土复合掺合料火山灰活性与形貌研究

用锂盐渣、粉煤灰按比例复合作为一种新型的混凝土活性掺合料，对该复合掺合料的试验研究表明：锂盐渣掺量对复合掺合料的火山灰活性影响差别较大；对混凝土7d，28d和60d各龄期强度影响也较大。研究中采用了扫描电镜及X衍射等现代测试技术，并对该复合掺合料火山灰活性及复合掺合料水泥浆体水化初期和后期形貌特征进行了深入研究，得出复合掺合料中锂盐渣存在较佳掺量。

Pozzolanic Activity and Morphology Features of Concrete Admixture of Lithium-Salt Residue

A new type of concrete admixture is fabricated by mixing lithium salt residue (LSR) and fly ash in a certain proportion. Experiments on this admixture show that: the addition amount of LSR affects the pozzolanic activity of the concrete admixture and the strengths of concrete aged 7 d, 28 d and 60 d respectively. Moreover, some modern test technologies, such as scanning electron microscopy and X ray diffraction, are used to study the pozzolanic activity of the concrete admixture and the morphology features of hydrated cement in their initial and later stages. The optimum content of LSR in the compound admixture is obtained.