Research Information System
2nd International Conference on Engineering and Natural Sciences, ICENS 2016, Sarajevo, Bosnia And Herzegovina, 24 - 28 May 2016, pp.816-822, (Full Text)
In
concrete production, because of air entraining admixtures (AEA) are used for a
small percentage by weight of cement (in the range from 0.06% to 0.2%), there
is a possible risk adding more admixture in concrete than calculated from
personnel or equipment’s
sensitivity errors. In this situation concrete’s strength and durability performances are diminishing. In
this work, it was investigated the effect of high dosage air entraining
admixture usage on mortar properties. It was carried out unit weight,
flowability, setting time, air content, compressive strength, flexural
strength, ultrasound velocity tests and microstrucural inspections on specimens
which were produced with 5 different dosages including control. As a result of
experiments, in case of using admixtures with overdose, there would be loss of
quality of physical and mechanical properties of concrete, for this reason it
is concluded that, there must be some legal regulations using chemical
admixtures sensitively.