改性水玻璃砂CO_2硬化工艺性能的研究  

Technological Properties of CO_2 Hardening Process by Using Modified Silicate Sand

作　　者：许进[1] 

机构地区：[1]湛江广播电视大学,广东湛江524003

出　　处：《广东海洋大学学报》2008年第4期77-81,共5页Journal of Guangdong Ocean University

摘　　要：研究了改性水玻璃砂的基本工艺性能,结果表明:在相同的粘结剂加入量条件下,用不同原砂所得到的型砂抗压强度大小顺序为大林砂>都昌砂>新会砂>岳阳砂;改性水玻璃18#的表面安定性最好,粘结剂加入量增多,表面安定性改善,吹气时间延长,表面安定性恶化;改性水玻璃的抗吸湿性比普通水玻璃好,尤其是改性水玻璃18#的抗吸湿性比普通水玻璃高出一倍以上,随着吹气时间的延长,抗吸湿性提高;改性水玻璃18#、A1和B2的可使用时间均满足生产要求;改性水玻璃B2的发气量最大,18#、A1的发气量略小于普通水玻璃。This paper studies the basic performance of modified sodium silicate sand process. The experimental results show that the binder in the same amount under the conditions of the different sand get compressive strength of sand with the following order： Dalin sand 〉 all-chang sand 〉 the new sand 〉 Yueyang sand. Modified sodium silicate 18^# is on the table of the best binder. With the increase of the volume, the improvements will be achieved; with the extension of blowing time, the deterioration of the table occurs. Anti-modified silicate hygroscopicity is better than that of ordinary sodium silicate, and hygroscopicity of the modified silicate-18^# is especially double higher than ordinary sodium silicate; with the extension of blowing time, the anti-hygroscopicity increased. The time used in Modified sodium silicate 18^#, A1 and B2 can meet the requirements of production. B2 modified silicate produces the largest gas, 18^#, the A1, slightly less than ordinary sodium silicate.

关 键 词：CO2硬化 改性 水玻璃 工艺性能 

分 类 号：P427.321[天文地球—大气科学及气象学]