镍铁渣水泥与粉煤灰水泥的力学性能对比试验  

Comparative Test of Mechanical Properties Between Ferronickel Slag Cement and Fly Ash Cement

作　　者：罗才松 陈华艳 付朝江 卢健 Luo Caisong;Chen Huayan;Fu Chaojiang;Lu Jian(School of Civil Engineering,Fujian University of Technology,Fuzhou350118,Fujian,China;Fujian Huarong Construction Group Co.,Ltd.,Fuzhou350009,Fujian,China)

机构地区：[1]福建工程学院土木工程学院,福建福州350118 [2]福建省华荣建设集团有限公司,福建福州350009

出　　处：《工程与试验》2023年第2期30-34,81,共6页Engineering and Test

基　　金：福建省自然科学基金项目(2022J01928,2020J01885),福建省住建厅科技项目(2022-K-71)。

摘　　要：通过对69组镍铁渣掺合料水泥与粉煤灰掺合料水泥进行配合比对比试验,研究镍铁渣掺量、镍铁渣与硅灰不同比例对复合水泥胶砂抗压强度、抗折强度的影响;同时,以相同掺量粉煤灰掺合料进行对比试验。试验结果表明:镍铁渣具有与粉煤灰类似的火山灰活性,可作为胶凝材料代替部分水泥使用;在总掺量不超过30%的情况下,无论是单掺镍铁渣或粉煤灰,还是复掺镍铁渣&硅灰,或复掺粉煤灰&硅灰,二者配置的水泥胶砂抗压强度与抗折强度性能相当。随着镍铁渣掺量的增加,复合镍铁渣水泥胶砂抗压强度与抗折强度均逐渐降低;无论是单掺镍铁渣,还是复掺镍铁渣、硅灰水泥中镍铁渣与硅灰总掺量均不宜超过30%,镍铁渣与硅灰比例分别为2∶1、1∶1、1∶2时,3种比例下的强度关系满足2∶1>1∶1>1∶2。Through the comparative test of 69 groups of ferronickel slag(FNS)admixture cement and fly ash admixture cement,the effects of the content of FNS and the different ratio of FNS to silica fume on the compressive strength and flexural strength of composite cement mortar are studied.At the same time,the comparative test is carried out with the same amount of fly ash admixture.The test results show that FNS has pozzolanic activity similar to fly ash and can be used as cementitious material instead of some cement.Under the condition that the total dosage does not exceed 30%,whether it is single-doped FNS or fly ash,or double-blended FNS&silica fume,or double-blended fly ash&silica fume,the compressive strength and flexural strength properties of the cement glue prepared by the two sand are comparable.With the increase of FNS content,the compressive strength and flexural strength of composite FNS cement mortar gradually decrease.The total content of FNS and silicon powder in cement should not exceed 30%,whether it is single or double mixed with FNS and silicon powder.When the ratio of FNS to silica fume is 2∶1,1∶1 and 1∶2 respectively,the strength relationship under the three ratios satisfies 2∶1>1∶1>1∶2.

关 键 词：镍铁渣 粉煤灰 力学性能 对比试验 

分 类 号：TU528[建筑科学—建筑技术科学]