The hydration degree of Portland cement under the condition of low water cement ratio was tested,and the microstructure of hardened cement paste was studied by means of XRD and SEM.
研究了低水灰比硅酸盐水泥的水化程度,并利用XRD和SEM分析了硬化水泥浆体的微观结构。
The preparation of the low cement spinel castable refractory is introduced.
介绍了低水泥尖晶石浇注料的研制过程,通过大量试验,确定了活住SiO2微粉和α-Al2O3微粉、水泥、外加剂品种和用量,骨料颗料级配。
To define the technological process and to provide a basis for extract lower water ethanol from fule oil in the future.
文中通过杂醇油的分离试验 ,探索了从杂醇油中提取低水乙醇和高纯度异戊醇的方法 ,确定了杂醇油加盐萃取提取低水乙醇及减压精馏回收盐溶剂的工艺路线 ,为今后杂醇油分离提取低水乙醇工业化提供依据。