微铬渣作水泥混合材的研究

STUDY ON MICROCHROMIUM SLAG USED AS ADDITION TO CEMENT

本文对微铬渣的矿物组成 ,胶凝性和用微铬渣作混合材生产的水泥的力学性能、保水性及压蒸安定性进行了研究。结果表明 :微铬渣的主要矿物组成为 α′- C2 S、β- C2 S、γ- C2 S、Mg O、C3A和微量 Cr、Cr2 O3等 ,它具有一定的胶凝性 ,并且 ,硫酸盐激发剂能显著提高其水化活性。微铬渣作水泥混合材能够改善水泥的保水性 ,但考虑安定性因素 ,微铬渣在水泥中的掺量应控制在 30

the mineral composition and cementitious behavior in microchromium slag and the mechanical properties,autoclave soundness and water retentivity of the cement of using microchromium slag for mixture were studied in the paper. The results show that microchromium slag consists of α′-C 2S,β-C 2S,γ-C 2S,MgO,C 3A,Cr and Cr 2O 3 etc. and has a little of the cementitious behavior and the hydraulic properties of microchromium slag can be greatly increased by the sulfate activator. The microchromium slag used as addition to cement can also improve water retentivity of cement but the content of microchromium slag in cement is not over 30% because of the factor of soundness.