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Study on the Useful of Scrubber Residue from Municipal Solid Waste for the Fine Aggregate of Concrete

城市生活垃圾洗涤残渣用于混凝土细骨料的研究

基本信息

批准号：
15560398
负责人：
SOEDA Masashi
金额：
$ 2.3万
依托单位：
Fukuoka University
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 2005
项目状态：
已结题

项目摘要

Scrubber residue of dry scrubber systems from combustion of municipal solid waste (MSW) are almost disposed in ground after the intermediate process. Because MSW incinerator residue show high pH values when brought in contact with water, and high-density chloride, and heavy metals such as Pb are leached. However, the resource recycling of MSW incinerator residue are recently required because of the shortage of the land fill lot and the environmental pollution. This report investigates the role of MSW incinerator residue on the corrosion of steel bars in concrete, and leaching heavy metals from concrete. To study the effects of MSW on the freeze-thaw resistance and the chloride penetration, the accelerated carbonation test and the freezing and thawing test were performed. In the experiments, the water-cement ratio was set to 0.55. The percentages of cement replacement by MSW were selected as 0, 10, 20 and 50% weight. Slump loss of MSW concrete was compensated by the use of a air-entraining and high-range water-reducing agent.The results of the experiments are summarized as follows :(1)As for leaching of incineration fly ash, Pb is reduced by aging, while Pb and Cl^- are reduced by washing of incineration fly ash.(2)The compressive strength of concrete containing incineration fly ash is comparable to that of concrete with no fly ash, though the values slightly vary depending on the fly ash treatment method.(3)Both the carbonation depth and chloride content of concrete containing aged incineration fly ash tend to increase as the ash content increases.(4)The quantity of elution of lead from the concrete which replaced sea sand in destruction by fire ash satisfied soil environmental standard in all substitution rates.

城市生活垃圾焚烧产生的干式洗涤系统的洗涤残渣经过中间处理后，基本上都是就地处理。由于城市生活垃圾焚烧炉残渣与水接触时pH值高，氯化物浓度高，铅等重金属被浸出。然而，由于垃圾填埋场的短缺和环境污染，近年来要求对垃圾焚烧炉残渣进行资源化回收。本文研究了城市生活垃圾焚烧残渣对混凝土中钢筋的腐蚀和重金属的浸出作用。通过加速碳化试验和冻融试验，研究了城市生活垃圾对混凝土抗冻融性和氯离子渗透性的影响。在实验中，水灰比设定为0.55。MSW取代水泥的百分比被选择为0、10、20和50%重量。研究结果表明：（1）焚烧飞灰的浸出过程中，通过老化降低了Pb的含量，通过水洗降低了Pb和Cl^-的含量;（2）含焚烧飞灰的混凝土的抗压强度与不含飞灰的混凝土相当，但根据飞灰处理方法的不同，抗压强度略有不同。（3）含老化焚烧飞灰混凝土的碳化深度和氯离子含量均随灰含量的增加而增加。（4）在所有替代率下，用火灰替代海砂破坏后的混凝土中铅的溶出量均满足土壤环境标准。

项目成果

期刊论文数量（40）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

MINERALOGICAL CHARACTERISTICS OF MUNICIPAL SOLID WASTE MELTING RESIDUES(SLAG)-EVIDENCES FROM A HIGH TEMPERATURE TREATMENT PLANT IN JAPAN

市政固体废物熔渣（矿渣）的矿物学特征——来自日本高温处理厂的证据

DOI：
发表时间：
2003
期刊：
International Workshop on Earth Science and Technology
影响因子：
0
作者：
Amirhomayoun SAFFARZADEH;Koichiro WATANABE;Takayuki SHIMAOKA;Youshinobu MOTOMURA
通讯作者：
Youshinobu MOTOMURA

大野佑介, 添田政司, 大和竹史: "都市ゴミ焼却飛灰から製造した骨材を用いたポーラスコンクリートの強度特性"土木学会西部支部研究発表会講演概要集. A-526-A-527 (2004)

Yusuke Ohno、Masashi Soeda、Takefumi Yamato：“使用城市垃圾焚烧飞灰生产的骨料的多孔混凝土的强度特性”日本土木工程师学会西部分会 A-526-A-527 (2004) 的演讲摘要。