Production of Filler Aggregate from Waste of Bivalves Molluscs Shells  

作　　者：Ulisses Targino Bezerra Fabio Luiz P. Almeida Lucineide Balbino Silva Normando Perazzo Barbosa TiberioA. Passos Danielle G. L. Cavalcante 

机构地区：[1]Federal Institute of Paraiba, Av. 1°de Maio, 720, Jaguaribe, Joao Pessoa-PB, Brazil [2]Federal University of Paralba, Castelo Branco, S/N, Joao Pessoa-PB, Brazil

出　　处：《Journal of Civil Engineering and Architecture》2011年第4期363-367,共5页土木工程与建筑（英文版）

摘　　要：The work presents an experimental study held with shells of molluscs of the species Anomalocardia brasiliana and Tivela mactroides, commonly found in the Northeast coast of Brazil. A local community living from the collection of these animals was the motivation of the work. This community wishes to install an industry for processing these molluscs; however, as government agencies require making an appropriate allocation of discarded shells, the community needs an environmental project of final destination of waste. Thus, the expectation of the work was to obtain a material to be added to Portland cement to act as filler, and also obtain a limestone that can be used as ink, because the material is composed of 80% calcium carbonate. The shells were ground and passed the sieve 325 mesh （0.044 mm）. The material was characterized by X-ray diffraction and X-ray fluorescence. Mortars specimens were prepared with percentages： 0%, 5%, 10%, 15%, 20% and 30% replacement of Portland cement. Two conditions were analyzed： with shells in a raw and burned state. The obtained results confirm the filler material effect, which suggests its use as a partial replacement of cement. However, due to the short silicas＇s concentration, the pozzolanic effect was not observed.

关 键 词：Bivalves molluscs shells FILLER Portland cement MORTAR 

分 类 号：TQ172.71[化学工程—水泥工业] Q959.21[化学工程—硅酸盐工业]