Print Email Facebook Twitter Development of engineered cementitious composites with limestone powder and blast furnace slag Title Development of engineered cementitious composites with limestone powder and blast furnace slag Author Zhou, J. Qian, S. Sierra Beltran, M.G. Ye, G. Van Breugel, K. Li, V.C. Faculty Civil Engineering and Geosciences Department Design and Construction Date 2009-09-17 Abstract Nowadays limestone powder and blast furnace slag (BFS) are widely used in concrete as blended materials in cement. The replacement of Portland cement by limestone powder and BFS can lower the cost and enhance the greenness of concrete, since the production of these two materials needs less energy and causes less CO2 emission than Portland cement. Moreover, the use of limestone powder and BFS improves the properties of fresh and hardened concrete, such as workability and durability. Engineered cementitious composites (ECC) is a class of ultra ductile fiber reinforced cementitious composites, characterized by high ductility, tight crack width control and relatively low fiber content. The limestone powder and BFS are used to produce ECC in this research. The mix proportion is designed experimentally by adjusting the amount of limestone powder and BFS, accompanied by four-point bending test and uniaxial tensile test. This study results in an ECC mix proportion with the Portland cement content as low as 15% of powder by weight. This mixture, at 28 days, exhibits a high tensile strain capacity of 3.3%, a tight crack width of 57 lm and a moderate compressive strength of 38 MPa. In order to promote a wide use of ECC, it was tried to simplify the mixing of ECC with only two matrix materials, i.e. BFS cement and limestone powder, instead of three matrix materials. By replacing Portland cement and BFS in the aforementioned ECC mixture with BFS cement, the ECC with BFS cement and limestone powder exhibits a tensile strain capacity of 3.1%, a crack width of 76 lm and a compressive strength of 40 MPa after 28 days of curing. Subject engineered cementitious compositestensile strain capacitylimestone powderblast furnace slagblast furnace cement To reference this document use: http://resolver.tudelft.nl/uuid:5da401ab-6257-42a2-a5a7-b8fddededab4 DOI https://doi.org/10.1617/s11527-009-9549-0 Publisher Springer ISSN 1359-5997 Source Materials and Structures, 43 (5), 2010 Part of collection Institutional Repository Document type journal article Rights (c) 2010 The Author(s). This article is published with open access at Springerlink.com Files PDF zhou.pdf 778.16 KB Close viewer /islandora/object/uuid:5da401ab-6257-42a2-a5a7-b8fddededab4/datastream/OBJ/view