Properties of high-performance cementitious composites containing recycled rubber crumb

摘要: Abstract Concrete containing rubber crumb from waste tyre has been investigated previously and enhancement of material performance, for example, energy absorbing, observed. However, at the same time, degradation compressive flexural strength, as well some other physical properties are also inevitable. In this study, physical, mechanical durability High Performance Cementitious Composites (HPCC-R) were assessed. Moreover, 2% volume fraction micro steel fibres added to form Fibre Reinforced (HPFRCC-R) increase its integrity. Experimental results then compared those base without crumb. The impact different mix design methodologies, grading particles, curing conditions investigated. It was observed that drying shrinkage is neglectable after hot water either 90 °C or 60 °C HPCC-R. Under normal condition, development follows similar trend but end up with approximately 20% higher 28 days’ age. strength both HPCC-R HPFRCC-R decrease significantly amount Applying pre-treatment using Na ( OH ) identified effective approaches compensate loss. it impacts insignificant on development. rapid chloride permeability test (RCPT) under level, good material. Mixing scheme filler instead replacement fine sand lead better performance regarding versus density ratio a relatively high 40% by volume. recommended use “Addition” mixing when large being used in HPFRCC future.