Study on the assessment of scaling resistance of concrete exposed to deicing salts and the test method in Japan
日本防冻盐混凝土抗结垢性能评价及试验方法研究
基本信息
- 批准号:17560411
- 负责人:
- 金额:$ 2.24万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2007
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
(1) Study on the test method for scaling resistance of concrete exposed to deicing salts1) In Tohoku district, the scaling deterioration caused by influence of deicing salts was detected most seriously recognized among frost damage of concrete.2) In Japan, however, there is no standard test method for assessing the scaling resistance of concrete. The influences in testing conditions exerting the occurrence of scaling were examined using ASTM C672 method and RILEM CDF method. Between both test methods, there existed the differences of the mass-of-scaled-off particles and the coefficient of variations.3) Also, the ways how to apply the chloride solution in test, resulted in the change of the amount of scaling. It was confirmed, from the viewpoint of scaling rate, the total mass-of-scaled-off particles due to change of the water cement ratio and the test method were found to be almost governed by the amount of scaling developed at the early cycle of the freeze-thaw test.4) RILEM CDF method was found to be useful as the scaling test to apply in Japan from the viewpoint of work-ability and test equipment.(2) Study on the assessment of frost resistance of surface layer of concrete1) Availability of modified pull-off test method which enabled the measurement of strength at an arbitrary distance from concrete surface was found to be an excellent measure of the concrete strength in the weakened portion due to freeze-thaw action.2) The applicability of rapid testing methods for permeability of surface layer of concrete, were judged promising to assess the tightness and the degree of deterioration of concrete surface layer due to freeze-thaw action.
(1)除冰盐作用下混凝土抗结垢性试验方法研究1)在东北地区,除冰盐影响下的结垢劣化是混凝土冻害中最为严重的。2)然而,在日本,没有标准的测试方法来评估混凝土的抗结垢性。采用ASTM C672法和RILEM CDF法考察了试验条件对结垢发生的影响。在两种测试方法之间,颗粒的标度质量和变异系数存在差异。3)试验中氯化物溶液的使用方式也导致了结垢量的变化。从结垢率的角度证实,水灰比变化引起的结垢颗粒的总质量和试验方法几乎受冻融试验初期形成的结垢量的支配。4)从可操作性和试验设备的角度,发现RILEM CDF法作为结垢试验在日本是有用的。(2)混凝土表面层抗冻性能评价的研究1)改进拉脱试验方法的可行性,可以测量离混凝土表面任意距离处的强度,是测量冻融作用下混凝土强度弱化部分的一种很好的方法。2)判断了混凝土面层渗透性快速测试方法的适用性,有望评估混凝土面层在冻融作用下的密闭性和劣化程度。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
コンクリートの耐凍害性評価のための簡易透気試験法の開発に関する研究
评价混凝土抗冻性的简易透气性测试方法的开发研究
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:K.Kato;I.Ujike;Y.Konishi;M.Numata;月永 洋一;今野 竜也;T. Konno;今野 竜也;権代 由範
- 通讯作者:権代 由範
凍結防止剤浸漬下のコンクリートのスケーリング量に及ぼす凍結融解サイクル温度変化の影響に関する一考察
冻融循环温度变化对防冻剂混凝土结垢量的影响研究
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:K.Kato;I.Ujike;Y.Konishi;M.Numata;月永 洋一;今野 竜也;T. Konno;今野 竜也;権代 由範;M.Shoya;阿波 稔;權代 由範;阿波 稔;権代 由範;M.Aba;子田 康弘
- 通讯作者:子田 康弘
Assessment of Frost Resistance of Concrete Exposed to Deicing Salts by Using Different Freeze Thaw Test Methods
使用不同冻融试验方法评估暴露于除冰盐的混凝土的抗冻性
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:K.Kato;I.Ujike;Y.Konishi;M.Numata;月永 洋一;今野 竜也;T. Konno;今野 竜也;権代 由範;M.Shoya;阿波 稔;權代 由範;阿波 稔;権代 由範;M.Aba;子田 康弘;Y.Gondai
- 通讯作者:Y.Gondai
凍結防止剤によるコンクリートのスケーリング試験方法に関する基礎的検討
使用防冻剂进行混凝土结垢试验方法的基础研究
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:倉橋奨;正木和明;澤田義博;凌甦群;Y. Gondai;Y. Gondai;権代 由典;上 さおり;唐 川要
- 通讯作者:唐 川要
凍結融解作用を受けるコンクリートの塩花物浸透性と鉄筋腐食
冻融作用下混凝土中盐粒渗透率与钢筋腐蚀
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:K.Kato;I.Ujike;Y.Konishi;M.Numata;月永 洋一;今野 竜也
- 通讯作者:今野 竜也
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SHOYA Masami其他文献
SHOYA Masami的其他文献
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{{ truncateString('SHOYA Masami', 18)}}的其他基金
Proposal for Durability Verification Technique of Concrete from the Viewpoing of Deteriorated Depth Under Freezing and Thawing Action
从冻融劣化深度角度提出混凝土耐久性验证技术
- 批准号:
14550467 - 财政年份:2002
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Role of Fine Mineral Powders to Produce High-Performance Concrete
精细矿物粉末在生产高性能混凝土中的作用
- 批准号:
11650469 - 财政年份:1999
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
On Freeze-Thaw Damage of Concrete Due to Combined Effect of Chloride Penetration and Carbonation
氯离子渗透与碳化联合作用下混凝土冻融损伤研究
- 批准号:
06650500 - 财政年份:1994
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Studies on Improvement of Durability by Making Dense Surface Layer of Concrete Using Permeable Sheets
使用透水板制作混凝土致密表层以提高耐久性的研究
- 批准号:
03650395 - 财政年份:1991
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Studies on Methods to Assess the Quality of the Surface Layer of Concrete
混凝土表层质量评价方法的研究
- 批准号:
02555107 - 财政年份:1990
- 资助金额:
$ 2.24万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)
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