Development of Non-Chloride Concrete Setting Accelerator and the Study of its Application to Concrete Derived from Industrial Byproducts
无氯混凝土促凝剂的研制及其在工业副产品混凝土中的应用研究
基本信息
- 批准号:15560501
- 负责人:
- 金额:$ 2.43万
- 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:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In high-performance concrete, a delay in setting may result with the addition of large amounts of superplasticizer, viscosity agent, and other admixtures. To solve this problem, a setting accelerator is used, which traditionally used to be calcium chloride (CaCl_2). However, calcium chloride is not used currently because it leads to corrosion of steel reinforcements. In the present study, we have developed non-chloride compound setting accelerator, in which aluminum sulfate (Al_2(SO_4)_3) and barium nitrate (Ba(NO_3)_2) are the main components instead of calcium chloride. The effects of these additives on setting property, flow property, and compressive strength were investigated when industrial byproducts such as fly-ash and blast-furnace slag were used in the high-flow concrete. The setting time was found to be shortened by about 30-40% while maintaining a similar flow property to concrete without a setting accelerator. The performance was increased by about 15% compared with that of the calcium nitrite accelerator which is presently used.
在高性能混凝土中,由于添加了大量的高效减水剂、粘合剂和其他外加剂,可能会导致凝结延迟。为了解决这个问题,使用了一种凝结促进剂,传统上使用的是氯化钙(CaCl2)。然而,目前没有使用氯化钙,因为它会导致钢筋的腐蚀。本研究以硫酸铝(Al_2(SO_4)_3)和硝酸钡(Ba(NO_3)_2)为主要成分,取代氯化钙,研制出无氯复合促凝剂。研究了这些外加剂在大流态混凝土中应用时对凝结性能、流动性和抗压强度的影响。凝结时间缩短了约30%-40%,同时保持了与没有凝结促进剂的混凝土相似的流动性能。与目前使用的亚硝酸钙促进剂相比,其性能提高了15%左右。
项目成果
期刊论文数量(58)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
林真一郎, 梅村靖弘, 露木尚光: "フライアシュを使用した高流動コンクリートの凝結促進に関する研究"第47回日本大学理工学部学術講演会論文集. 47. 554-555 (2003)
Shinichiro Hayashi、Yasuhiro Umemura、Naomitsu Tsuyuki:“利用粉煤灰促进高流动性混凝土凝结的研究”第 47 届日本大学科学技术学院学术会议论文集 47. 554-555 (2003)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Properties of Concrete by Using of Setting Accelerator without Chloride Compound
无氯化物促凝剂混凝土性能研究
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Naomitsu TSUYUKI;Yasuhiro UMEMURA
- 通讯作者:Yasuhiro UMEMURA
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UMEMURA Yasuhiro其他文献
UMEMURA Yasuhiro的其他文献
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{{ truncateString('UMEMURA Yasuhiro', 18)}}的其他基金
Effects of organic admixtures on super long-term stability of cement-based artificial barrier for radioactive waste disposal facility
有机外加剂对放射性废物处置设施水泥基人工屏障超长期稳定性的影响
- 批准号:
15K06170 - 财政年份:2015
- 资助金额:
$ 2.43万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Optimum material design method of concrete using as an index silicate structure of cement hydrate
以水泥水合物硅酸盐结构为指标的混凝土优化材料设计方法
- 批准号:
23560555 - 财政年份:2011
- 资助金额:
$ 2.43万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Disruption of circadian rhythm in malignant cancer cells
恶性癌细胞昼夜节律的破坏
- 批准号:
23890180 - 财政年份:2011
- 资助金额:
$ 2.43万 - 项目类别:
Grant-in-Aid for Research Activity Start-up
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