STRENGTH DEVELOPMENT OF 300 N/MM2 CLASS ULTRA-HIGH STRENGTH GROUT DURING HEAT CONTROLLED CURING WITH ELEVATED TEMPERATURES

被引：0
|
作者：
Honma D. [1 ,2 ]
Kojima M. [2 ]
Nishiwaki T. [3 ,4 ]
Mihashi H. [4 ]
机构：
[1] Construction Material Engineering Group, Construction Technology Research Department, R & D Institute, Takenaka Co.
[2] Construction Technology Research Department, R & D Institute, Takenaka Co.
[3] Dept. of Architecture and Building Science, Graduate School of Engineering, Tohoku Univ.
来源：
Journal of Structural and Construction Engineering | 2023年 / 88卷 / 810期
关键词：
Compressivestrength; Effectiveage; Poresizedistribution; Ultrahighstrengthconcrete; Ultrahighstrengthgrout; XRD;
D O I：
10.3130/aijs.88.1230
中图分类号：
O6 [化学]; TQ03 [化学反应过程]; TQ02 [化工过程（物理过程及物理化学过程）];
学科分类号：
0703 ; 081701 ; 081704 ;
摘要：
The strength development of 300N/mm2 class ultra-high strength grout by heat-controlled curing was investigated. The strength development at 80-180 ℃ becomes higher than that at a constant temperature of 5-35 ℃, and can be expressed by an effective age based on the same manner. This is because the reactions of C2S, C3A, and C4AF are promoted, and the capillary pores are reduced by heat-controlled curing. Furthermore, it was clarified that heat-controlled curing with a heatingwire system and/or surfaceheatingelements achievedthe samestrength level as that byheat-controlledcuring under sealedconditions due tosimilarwater content. © 2023 Architectural Institute of Japan. All rights reserved.
引用
收藏
页码：1230 / 1239
页数：9
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