摘要
以鄂西某赤铁矿尾矿为主要原料,按前期试验所确定的原料配比(尾矿78%,黄砂10%,水泥10%,石膏2%)制备蒸养砖,主要考察了外加剂种类及用量、蒸养制度和自然养护周期对制品性能的影响。试验结果表明,在掺水量为15%,外加剂三乙醇胺与水泥的质量比为0.01%,成型压力为20MPa,蒸养制度为升温2h→40℃恒温6h→降温2h,自然养护周期为28d的条件下,制备的蒸养砖各项性能达到JC/T422—2007对MU15级产品的要求。
Taking hematite tailings from western Hubei as raw materials, the preparation of steam cured bricks is made with the mixture ratio （tailings 78%, yellow sands 10%, cements 10%, and gypsums 2%） that is determined from the pre-tests. The influence of the additional reagent type, the dosage, the steam-cured system and the natural curing period on the performance of products is studied.The results show that the performance of product can reach MU15 level at the standard of JC/T422-2007 under the conditions of water consumption 15%, the mixture ratio of triethanolamine and cement at 0.01%, compressive strength at 20 MPa, and the curing temperature rising up to 2 h, constant temperature 40 ℃ for 6 h, then temperature lowering 2 h and the natural curing period of 28 d.
出处
《金属矿山》
CAS
北大核心
2010年第6期182-185,共4页
Metal Mine
基金
"十一五"国家科技支撑计划重点项目(编号:2007BAB15B02)
关键词
赤铁矿尾矿
蒸养砖
外加剂
蒸养制度
Hematite tailings
Steam-cured brick
Additional reagent
Steam-curing system
