Internal sulfate attack can be caused by the gypsum residues present in fine recycled aggregates (FRA). As opposed to better known external or Delayed Ettringite Formation (DEF), sulfates this context are provided a contamination of aggregates. Mortars made with contaminated FRA were subjected different conditions, assess which parameters had an influence on reaction. Their mechanical propertie...

Our study offers a quantitative framework for microbial-induced calcium carbonate precipitation (MICP) to uplift the properties of recycled aggregate concrete (RAC). In this regard, marine alkalophilic bacterium Bacillus sp. B6 was employed, and its growth mineralization efficiency under seawater conditions investigated. Optimization MICP achieved with different nutrient sources bacterial intro...

In this study, waste tire powder and waste liquid crystal display (LCD) glass sand are used as recycled materials. With a fixed water to binder ratio (W/B = 0.4), the use of fly ash and slag as cementreplacement materials. waste tire powder and waste LCD glass sand, which passed the sieve screen size # 30(0.595 mm), were used to replace fine aggregates at 0%, 5% and 10% in producing lightweight...