Open AccessThe Influence of Selected Material and Technological Factors on Mechanical Properties and Microstructure of Reactive Powder Concrete (RPC) / Wpływ Wybranych Czynników Materiałowych I Technologicznych Na Własciwosci Mechaniczne I Mikrostrukture Betonów Z Proszków Reaktywnych (BPR)
Author(s) -
Tomasz Zdeb,
Jacek Śliwiński
Publication year - 2011
Publication title -
archives of civil engineering
Language(s) - English
Resource type - Journals
eISSN - 2300-3103
pISSN - 1230-2945
DOI - 10.2478/v.10169-011-0017-1
Subject(s) - materials science , composite material , silica fume , flexural strength , curing (chemistry) , microstructure , compressive strength , three point flexural test , young's modulus , elastic modulus
The paper deals with the properties and microstructure of Reactive Powder Concrete (RPC), which was developed at Cracow University of Technology. The influence of three different curing conditions: water (W), steam (S) and autoclave (A) and also steel fibres content on selected properties of RPC was analyzed. The composite characterized by w/s ratio equal to 0.20 and silica fume to cement ratio 20%, depending on curing conditions and fibres content, obtained compressive strength was in the range from 200 to 315 MPa, while modulus of elasticity determined during compression was about 50 GPa. During three-point bending test load-deflection curves were registered. Base on aforementioned measurements following parameters were calculated: flexural strength, stress at limit of proportionality (LOP), stress at modulus of rapture (MOR), work of fracture (WF), and toughness indices I 5 , I 10 and I 20 . Both amount of steel fibres and curing conditions influence the deflection of RPC during bending.