تأثير الانحراف في نتائج فحص الخرسانة الإسفلتية على نسبة الخصم المقررة من الكلفة و إمكانية تقليلها

الملخص EN

The road is the mirror of the civilization in any country so the quality and the quantity of the paved road measure the development in the country.

During construction stage must be taking a care for a rehabilitation or maintenance operations latest for cost saving and reduce losses in money involved for these tow activities .The unsuccessful results in testing asphaltic mixtures always could be occur due to unsuitable operation throughout any stage in the production process, leading to disturb the optimum benefit use of such mixture .This paper reviewed roadway layers ( base and surface course),and concerns about different alternatives of designing and testing of asphaltic mixtures that required to be succeed, and take a deviation that may be occur, and the direct or indirect effect of that deviation on roads construction costs .

The results show that the discount ratio more than 10% is very effective and make 34%of the 35 mixes samples that taken.

While, the discount ratio more than 5% leading to 46% of the samples taken.

Accordingly, this research work recommended using the 5% discount ratio as a deviation criteria and it is essential to do an appropriate steps behind it such as adjustment of mixing proportion or increase working inducement in case where there is no discount.