Flexural response and durability aspects of ECC containing stone slurry powder
- PDF / 5,810,607 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 55 Downloads / 194 Views
ORIGINAL PAPER
Flexural response and durability aspects of ECC containing stone slurry powder Maninder Singh1 · Babita Saini1 · H. D. Chalak1 Received: 11 May 2020 / Accepted: 27 October 2020 © Springer Nature Switzerland AG 2020
Abstract Depletion of natural resources and generation of solid wastes has become worldwide problem. The present investigation emphasizes the potential use of stone slurry powder in engineered cementitious composite. In this study, silica sand (SS), locally available fine river sand (FS), was used as fine aggregate and SSP was used as partial replacement of SS and FS by 25% and 50% for each type of sand. The performance of various mixes was evaluated by assessing the flexural, electrical resistivity, air permeability and sorptivity characteristics. To assess the microstructural properties of cement matrix, material characterization was also done. The findings demonstrate that utilization of SSP as SS and FS replacement in ECC increased the flexural strength, mid-span deflection and electrical resistivity and also showed positive results by decreasing air permeability and sorptivity. From this study, it is concluded that the use of SSP as SS and FS subrogation promotes the unique characteristics of ECC and also can be applied in harsh environmental conditions. Keywords Stone slurry powder · Electrical resistivity · Autoclam · Sorptivity · Permeability · Durability
Introduction Lack of durability is the major concern in the reinforced concrete hydraulic structures under harsh environmental conditions. The durability performance of cement-based materials depends highly upon the permeation, electrical behaviour, chemical attacks, cracks and transport properties of ions (Ramezanianpour et al. 2011; Belleghem et al. 2016; Wong et al. 2012; Khatri et al. 1997). Generally, in normal concrete with randomly distributed aggregates, the voids were found between transition zone and cement paste that allow the penetration of ions and also affect the durability of concrete structures (Basheer et al. 2005; Banthia and Mindess 1989; Lepech and Li 2009; Hilsdorf and Kropp 2004; Jia et al. 2016; Mehta and Manmohan 1980; Mehta and Monteiro 2006; Neville 2012). Many types of mineral admixtures * Babita Saini [email protected] Maninder Singh [email protected] H. D. Chalak [email protected] 1
Civil Engineering Department, National Institute of Technology, Kurukshetra, Haryana, India
(MA) such as fly ash (FA), ground granulated blast furnace slag (GGBFS), silica fume (SF) and rice husk ash (RHA) have been used in cement-based materials to improve the strength and durability performance. The presence of these fine mineral admixtures in concrete blocks the narrow connecting pores resulting into better performance under penetration, electrical current flow and other parameters (Hou et al. 2017; Medeiros-Junior and Lima 2016; Hassan et al. 2000; Sahmaran and Li 2009). On the other side, the brittle nature of concrete is the cause of cracking, which allows to penetrate many aggressive subs
Data Loading...
