INVESTIGATION FOR WEEKENED CONCRETE MATERIALS AND RESEARCH FOR QUALITY IMPROVEMENT OF CONCRETE

弱化混凝土材料的调查和混凝土质量改进的研究

• 批准号: 06304020
• 负责人: KUWABARA Takao
• 金额: $ 14.27万
• 依托单位: OSAKA PREFECTURE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06304020/
• 关键词: Concrete; Flozen and Melting; Acid proof; Weakning; Admixture; Alkali-aggregate Reaction; Injury from salt; Errosion; 鉄筋腐蝕; 腐蝕モデル; 混和材

This research is concerned with the investigation of weakened concrete materials which are in japan and with the qualitry impluvement methods of these materials. There are many facters in the problem of weakened phenomena for concrete materials, which are generally said as samely as Alkali-Silika reaction to gravels, flozen and melting of concrete, salt deseases for concrete and so on. Research results sre as following as :(1) Rice husk ash which is pulverized by burning is effective for the restraint of Alkali-Silika reaction and water bleeding in fresh concrete and making concrete strengthened at long ages. (from Aai, tukioka, Kuwabara, Isiguro)(2) Flozen and melting of condrete is affected by the permiability of concrete and so the permiability of concrete is the important index for flozen and melting phenomenon. (from Huji)(3) Chemical indexes for evaluation of the depth in weakened area are proposal, (from Nonaka) these are pH in a section, contents of S03, the strength of X-ray.(4) Utility of admixture (SF) is effective for acid proof and quality impluvement of concrete. (from Hattori, Morii) And so on.

本研究系关于日本混凝土材料之研究，并探讨其品质改良方法。混凝土材料的弱化现象是由多种因素引起的，如混凝土对碎石的碱-硅酸反应、混凝土的起融、混凝土的盐蚀等，研究结果表明：（1）燃烧后粉碎的稻壳灰对抑制新拌混凝土的碱-硅酸反应和泌水，使混凝土得到长期增强是有效的。(from（2）混凝土的渗透性对混凝土的起融有重要影响，因此混凝土的渗透性是混凝土起融的重要指标。(from（3）根据Nonaka的建议，提出了评价软弱带深度的化学指标：剖面pH值、S_（03）含量、X射线强度。(4)掺加外加剂（SF）是提高混凝土耐酸性能和质量的有效手段。(from（服部，森井）等等。

项目成果

國武 昌人: "Temperature estimation using 3-D FEM and its measurement in a concrete box culvert" The third world congresson computational mechanics. 1-5. 313-314 (1994)

Masato Kunitake：“使用 3-D FEM 进行温度估算及其在混凝土箱涵中的测量”第三届世界计算力学大会 1-5 (1994)。

K.ASAI: "Study on the Control of Alkali-aggregate Reaction on Concrete by Adding Rice Husk Ash (I)" JSIDRE. No.174. 95-101 (1994)

K.ASAI：“添加稻壳灰控制混凝土碱骨料反应的研究（I）”JSIDRE。

T.NONAKA AND OTHERS: "Preventing Microbial Corrosion of CONCRETE in Wastewater Treatment Plants" JSIDRE. No.174. 23-31 (1994)

T.NONAKA 等人：“防止废水处理厂中混凝土的微生物腐蚀” JSIDRE。

野中資博・杉田秀雄 但田広次・森 忠洋: "汚水処理施設におけるコンクリート微生物腐食対策に関する考察" 農業土木学会論文集. 174. 23-31 (1994)

Motohiro Nonaka、Hideo Sugita、Hiroji Tadita、Tadahiro Mori：“污水处理设施中混凝土微生物腐蚀措施的研究”日本农业和土木工程师学会学报 174. 23-31 (1994)。

K.HATTORI,T.MORII: "Fundamental Properties of Concrete mixed with Silica Fume" JSIDRE. No.172. 47-53 (1994)

K.HATTORI,T.MORII：“掺有硅灰的混凝土的基本性能”JSIDRE。