ROAD BUILDING CONTRACTORS

Oxidized bitumen 75/25 (otherwise called blown asphalt 75/25 and blown bitumen 75/25) is a semi-strong grade of unadulterated oil bitumen made via air-blowing through an asphalt transition. Oxidized bitumen 75/25 is made from oil bitumen which is made by blowing grade 60/70 bitumen by hot air. The numbers 75/25 connect with the midpoint of the material's conditioning point and infiltration separately. The conditioning point esteem is the degrees Centigrade estimated by the Ring and Ball still up in the air by ASTM D36. The entrance esteem is in 1/10 not entirely settled by IP49 or ASTM D5.