海港疏浚含盐淤泥烧结陶粒试验研究

doi:10.3969/j.issn.16740696.2016.06.17

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摘要: 选用连云港港疏浚泥为代表，测试了其基本性能和化学成分，进行了直接烧胀陶粒和复掺污泥烧胀陶粒试验，测试了陶粒的基本性能和可溶性盐含量。研究表明：连云港港疏浚淤泥主要化学成分为SiO2, Al2O3, Fe2O3，颗粒细小，液塑限高、塑性指数大，适于烧胀陶粒。连云港港疏浚淤泥复掺35%污泥能够烧制成密度低于600 kg/m3、筒压强度达到3.8 MPa的陶粒，最佳烧胀温度为1 020 ℃，烧胀陶粒可溶性盐含量极低，不存在吸湿、泛霜、腐蚀性和重金属污染问题。

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	李明东1
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	夏霆3
	刘洋洋3
	张志峰4
	田安国2

关键词 ：港口工程, 岩土工程, 淤泥, 氯化钠, 陶粒, 可溶性盐

Abstract：Dredged sediment from Lianyungang port was selected as an example, and its basic performances and chemical composition were tested. Experiments were carried out to test the expansion and compound sludge of sintered ceramic, and the basic properties and soluble salt content of the ceramic were tested. The results show that: the main chemical compositions of Lianyungang dredged sediment are SiO2, Al2O3 and Fe2O3, and its physical compositions are tiny particles with high liquid limit, plastic limit and plasticity index, which are suitable for sintering ceramsite. Ceramsites, whose density is less than 600 kg/m3 and cylinder compressive strength reaches 3.8 MPa, are successfully sintered from the mixture of Lianyungang dredged sediment and 35% sludge. Moreover, the best sinterswelling temperature is 1 020 ℃. Soluble salt content of the sintered ceramsite is extremely low, which means that there is no problem of moisture absorption, scum, corrosion or heavy metal pollution for the produced ceramsite.

Key words ： port engineering, geotechnical engineering, sediment, sodium chloride, ceramsite, soluble salt

收稿日期: 2015-10-16

PACS:	U652.6
	TU58

基金资助:住房和城乡建设部科学技术计划项目（2015K6001）；国家水体污染控制与治理重大科技专项项目（2012ZX0750100103）；江苏省海洋资源开发研究院开放课题（JSIMR201501）

作者简介: 李明东(1981—)，男，山东平邑人，副教授，博士，主要从事岩土工程和固废资源化方面的研究。Email：ytlimd@163.com。

引用本文:

李明东1,2，夏霆3，刘洋洋3，张志峰4，田安国2. 海港疏浚含盐淤泥烧结陶粒试验研究[J]. 重庆交通大学学报（自然科学版）, 2016, 35(6): 81-85.
LI Mingdong1, 2, XIA Ting3, LIU Yangyang3, ZHANG Zhifeng4, TIAN Anguo2. Experimental Research on Sintering Ceramsite of Dredged Saline Sediment from Seaport. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(6): 81-85.

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