Reactive powder based concretes: Mechanical properties, durability and hybrid use with OPC

被引：135
作者：
Cwirzen, A. [1 ]
Penttala, V. [1 ]
Vornanen, C. [1 ]
机构：
[1] Aalto Univ, Lab Bldg Mat Technol, FIN-02150 Espoo, Finland
来源：
CEMENT AND CONCRETE RESEARCH | 2008年 / 38卷 / 10期
关键词：
D O I：
10.1016/j.cemconres.2008.03.013
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The basic mechanical properties, frost durability and the bond strength with normal strength concretes of the ultra high strength (UHS) mortars and concretes were studied. The produced mixes had plastic or fluid-like consistency. The 28-day compressive strength varied between 170 and 202 MPa for the heat-treated specimens and between 130 and 150 MPa for the non-heat-treated specimens. The shrinkage values were two times higher for the UHS mortars in comparison with the UHS concretes. After the initial shrinkage, swelling was noticed in the UHS mortars. The lowest creep values were measured for the non-heat-treated UHS concretes. The frost-deicing salts durability of the UHS mortars and concretes appeared to be very good even despite the increased water uptake of the UHS concretes. The study of the hybrid concrete beams indicated the formation of low strength transition zone between the UHS mortar and normal strength concrete. (C) 2008 Elsevier Ltd. All rights reserved.
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收藏
页码：1217 / 1226
页数：10
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