In this paper, three modified tetraethyl orthosilicate surface treatment agents were prepared by using (TEOS) as the preparation monomer, isobutyltriethoxysilane (IBTS) hybridizer, and acrylic acid, phosphoric hydrochloric acid catalysts. The effects of on permeability airport pavement concrete investigated water absorption tests, contact angle penetration resistance chloride ion carbonation me...

Optimization of pretreatment and various gas-solid interaction conditions is necessary for effective carbonation recycled coarse aggregates derived from concrete wastes (RCA). This study demonstrated the use linear weighted sum method to simultaneously optimize test conditions. The optimization produced simplified, eco-friendly pretreatments drastically reduced duration RCA 72 h 3 weeks in prev...

• Using cement as a starting material to produce xonotlite-based lightweight (Xo_ALC). Effective hydrothermal synthesis condition for xonotlite formation is at 230 °C the autoclaving time of more than 18 h. Pore size distribution autoclaved specimen shifts coarser region due crystallization and carbonation. Compressive strength Xo_ALC slightly increased after The carbonation occurs quickly aera...

Carbonation-induced corrosion is usually considered in uniform or generalized corrosion. This true for small laboratory samples but not necessary the case real reinforced concrete structures built with multilayers reinforcement. Multi-layers reinforcement could lead to a galvanic between first de-passivated layer closed surface and deeper layers still passivated. The present paper compares dens...

The behaviour of the stabilized lateritic soil obtained from Amaoba, Nigeria treated with green crude oil was statistically studied using analysis of variance with interaction, Kruskal-Wallis test, and expected mean square methods to validate the effect of the additive on the strength properties of the stabilized soil. First a preliminary test was conducted on the soil to classify the soil as a...