This study focuses on the workability and compressive strength of ceramsite self-compacting concrete with fine aggregate partially substituted by steel slag sand (CSLSCC) to prevent pollution in environment. The SF, J-ring, visual stability index, sieve analysis tests are primarily employed this research investigate freshly mixed containing at various replacement rates. experiment results indic...

A laboratory study was made of the effects of crushed particles, both coarse and fine aggregate, on the stability of bituminous-aggregate mixtures. Crushed limestone and varying percentages of crushed and uncrushed gravel were used as the coarse aggregate while variation in the shape of the fine aggregate was obtained by using rounded natural sand and crushed-stone sand. These aggregates were u...

The use of recycled aggregate to reduce the over-exploitation raw aggregates is necessary. This study analysed and categorised properties water-washed, fine coarse, following European Normalization (EN) specification. Because their adequate properties, zero impurities chemical soluble salts, plain concrete was produced using 100% aggregates. Two experimental phases were conducted. Firstly, a la...

This study proposes a soft robotic device with slim and flexible body that switches between air blowing suction single airflow control. Suction is achieved by jet flow entraining surrounding air, blocking reversing flow. The thin flap gate enables the switching. Air blocked while closed passes through open. opening closing of are controlled expansion inflatable chambers installed near gate. ext...

Chronic obstructive and interstitial lung diseases impair pulmonary gas exchange leading to wasted ventilation (alveolar dead space) and wasted perfusion (venous admixture). These two fundamental types of abnormality represent opposite ends of the spectrum of ventilation-perfusion mismatch with V/Q ratios of infinity and zero. Treatment approaches that improve airway function, reduce air trappi...

Modification of plastic waste to be use as a replacement coarse aggregate on the manufacturing porous concrete block is presented in this paper. Different proportions sand content were used with percentage 1%, 5% and 10% by total weight sample investigate its effects performance blocks based some conducted tests i.e., compression flexural load resistance, porosity, infiltration rate tests. The ...

This study investigates the chloride penetration resistance of fine recycled aggregate concrete (FRAC). Six mixes comprising 0.45 and 0.55 w/b were prepared using aggregates (FRA) at 0, 25 50% by volume replacement natural sand. The was tested surface electrical resistivity (SER), conductivity index (CCI), bulk diffusion tests. SER CCI tests conducted after 28 days 180 wet curing, while test ca...