Controlled Low-Strength Materials Composed Solely of By-Products

被引：11
|
作者：
Halmen, Ceki [1 ]
Shah, Harsh [2 ]
机构：
[1] Univ Missouri, Dept Civil Engn, Kansas City, MO 64110 USA
[2] Dubois Consultants Inc, Kansas City, MO USA
来源：
ACI MATERIALS JOURNAL | 2015年 / 112卷 / 02期
关键词：
compressive strength; controlled low-strength material (CLSM); flow; freezing-and-thawing resistance; gypsum; quarry fines; synthetic setting time; FINES; CLSM;
D O I：
10.14359/51686987
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A series of low-cost controlled low-strength materials (CLSMs) mixtures were produced without cement, using only by-products, including Class C fly ash, large quantities of limestone quarry fines, and synthetic gypsum. Flow, setting time, compressive strength, elastic modulus, and freezing-and-thawing resistance of mixtures were evaluated. Results indicated that CLSM mixtures solely comprised of by-products can be designed to provide a wide range of flow, setting time, and strength values. Obtained flow values varied between 200 and 600 mm (8 and 24 in.), setting time varied between a couple of hours and a day, and strength values varied between 237.4 and 9932 kPa (34.4 and 1440.5 psi). The maximum measured mass loss after 12 freezing-and-thawing cycles was 8%. Results showed that the addition of synthetic gypsum significantly improved strength and freezing-and-thawing resistance of mixtures.
引用
收藏
页码：239 / 246
页数：8
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