登录
注册
E-alert
登录
注册
E-alert
EXPERIMENTAL STUDY ON ADIABATIC TEMPERATURE RISE OF HIGH PERFORMANCE SELF-COMPACTING CONCRETE FOR MARINE STRUCTURE
-
摘要: 采用粉煤灰、矿渣粉、石灰石粉、硅灰等矿物掺合料,配制出海工自密实高性能混凝土,并重点开展海工自密实高性能混凝土胶凝材料的水化热以及六种海工自密实高性能混凝土的绝热温升试验。试验研究结果表明,六种海工自密实混凝土胶凝材料7d水化热小于238J/g,具有较低的水化热;六种海工自密实高性能混凝土均具有较低的绝热温升,7d的绝热温升不大于55℃。宜采用复掺矿物掺合料配制海工自密实高性能混凝土,提高大体积混凝土抗裂性,且复掺粉煤灰和矿渣粉以及复掺矿渣粉与石灰石粉效果较好,其7d的绝热温升可控制在50℃以内。
-
关键词:
- 粉煤灰 /
- 石灰石粉 /
- 海工自密实高性能混凝土 /
- 水化热 /
- 绝热温升
Abstract: By using fly ash,slag powder,limestone powder and silica fume,high performance self-compacting concrete for marine structure was developed and the shrinkage of high performance self-compacting concrete for marine structure was emphatically studied.Experimental results show that the 7 d hydration heat of binder material for six kinds of high performance self-compacting concrete for marine structure is less than 238 J/g,and 7 d adiabatic temperature rise for six kinds of high performance self-compacting concrete for marine structure isn't greater than 55 ℃.The making up method with composite mineral admixture is feasible to improve crack resistance of mass concrete.Moreover,the effect with fly and slag powder,and slag powder and limestone powder is best,7 d adiabatic temperature rise of them can be controlled in 50 ℃. -
[2] 廉慧珍,张青,张耀凯.国内外自密实高性能混凝土研究及应用现状[J].施工技术,1999(5):1－3. 刘数华,王晓燕.自密实混凝土综述[J].建筑技术开发,2004(7):118－120. [3] 王成启,张悦然.粉煤灰海工自密实高性能混凝土的试验研究[J].新型建筑材料,2011(9):63－66. [4] 朱振宇,李春利,王崧会.水利工程大体积混凝土裂缝的成因与防控[J].建筑技术开发,2011(4):28－30. [5] 吴刚,蒲赞全,钟启凯,等.襄樊汉江桥主承台大体积混凝土施工技术[J].施工技术,2011(9):29－32. [6] 王毅.桥梁施工中大体积混凝土裂缝的原因与防治[J].建筑技术开发,2011(4):45－47. [7] 樊胜军,史泽运,刘振江.某振动台动力基础大体积混凝土施工温度控制技术[J].施工技术,2011(9):64－70. [8] 黄士元,蒋家奋,杨南如.近代混凝土技术[M].西安:陕西科学技术出版社,1998. [9] 沈威,黄文熙,闵盘荣.水泥工艺学[M].武汉:武汉工业大学出版社,1990. -
点击查看大图
计量
- 文章访问数: 124
- HTML全文浏览量: 8
- PDF下载量: 44
- 被引次数: 0
下载:
