PERFORMANCE CHARACTERISTICS OF HPDSP CONCRETE: AN OVERVIEW

Author(s): S.K. Swar, S.K. Sharma and H.K. Sharma
Book Title: Seventh International RILEM Conference on High Performance Fiber Reinforced Cement Composites (HPFRCC7)
Editor: H.W. Reinhardt, G.J. Parra-Montesinos, H. Garrecht
ISBN: 978-2-35158-145-2
e-ISBN: 978-2-35158-146-9
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 79-86
Total Pages: 8
Language: English

Abstract: Inadequate transverse reinforcement is considered as the main reason for the beam column joint shear failure observed during recent earthquakes. DSP matrix consists of cement and high content of micro-silica with low water to cement ratio while the aggregates are graded quartz sand. Steel fibres with high tensile yield strength of smaller diameter and short length in different fibre volume percentage and aspect ratio will be utilized to improve the performance by reducing the brittleness of matrix material. In the case of High Performance Densified Small Particle Concrete (HPDSPC), concrete is dense at the micro-structure level, tensile strain would be much higher than that of the conventional SFRC, SIFCON & SIMCON. Studies were conducted to investigate multiple cracking behaviour of fibre reinforced small particle densified concrete containing high volume fraction (higher than 3%) of fine and short steel fibres. It was observed that by increasing fibres volume fraction, crack localization did not occur during multiple cracking. Various international codes of practices have been undergoing periodic revisions to incorporate the research findings into practice. The structural applications of HPDSPC, because of extremely high strength, will reduce dead load significantly as compared to normal weight concrete thereby offering substantial cost saving and by providing improved seismic response, longer spans, and thinner sections, less reinforcing steel and lower foundation cost.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00