The activity of HYPR surfactant as superplasticizer on fresh and hardened properties of concrete

الملخص EN

Superplasticizers are a basic component in a today concretes, enhancing workability, which leads to producing durable and sustainable concrete.

This research aims to study the effect of Alkyl dimethyl hydroxyl ethyl ammonium chloride (HYPR) cationic surfactant as superplasticizer on the fresh and hardened properties of concrete to produce concrete with adequate workability.

The mechanical properties of fresh and hardened concrete first obtained for control mix, then for different concentration of HYPR that added to the concrete, 0.10, 0.25, 0.50 and 0.75% by cement weight.

The slump tests, air content, compressive strength tests , microstructure and morphology of the hardened concrete were conducted for all specimens with and without HYPR.

The results indicate that using HYPR admixture at their best ratios in the concrete mixes would improve the slump loss problem from 70 mm to 230 mm.

The use of HYPR admixture showed an adverse effect on compressive strength.

The scanning electron microscope (SEM) illistrates that the addition of HYPR on concrete produces consistent bubble structure with a uniform small air voids system (80.41 μm).