ASPHALT – Impact

LABORATORY ANALYSIS

admin — Mon, 19 Dec 2022 05:20:44 +0000

IMPACT aims to keep the highest quality of testing equipment. We constant make a great effort to develop and improve new machines for testing asphalt mixtures.

IMPACT takes into account the new Superpave performance-based approach to measures physical properties that can be directly related to field performance, using engineering principles.

In this prospective, IMPACT produces a wide range of machines and accessories for evaluating the mechanical behaviour of asphalt mixtures and bitumen in compliance with the EN, ASTM and AASHTO standards.

SPECIMEN PREPARATION

admin — Mon, 19 Dec 2022 05:19:58 +0000

The correct preparation of the specimens plays a fundamental role to perform reliable performance testing. Sample preparation is particularly critical when asphalt mix has to be evaluated under advanced tests.

A minor imperfection of the sample may result in a significant variation of results.

COMPACTION

admin — Mon, 19 Dec 2022 05:19:08 +0000

Asphalt mixture compaction is an important procedure of asphalt mixture construction and can significantly affect the performance of asphalt pavement. Inadequate compaction results in low density and consequently low stiffness, reduced fatigue life, accelerated aging, rutting and moisture damage. On the contrary, adequate compaction of asphalt is essential to ensure the design performance of the mix and expected service life of the pavement.

Marshall evolved through the decades into methods that better reproduce real paving. IMPACT Gyratory, Roller and Shear compactors are designed to comply present requirements and build future paving technologies.

BINDER CONTENT – BITUMEN EXTRACTION

admin — Mon, 19 Dec 2022 05:18:13 +0000

The determination of binder content of bituminous mixtures is one of the major properties that affect pavement performance. The binder content affects the pavement’s tendency to permanent deformation, fatigue cracking and moisture damage.

The binder content can be determined by ignition method and hot/cold extraction. However due to environmental, economical, health and safety concerns, IMPACT investigated alternative methods to determine binder content developing innovative devices that combine all the processes associated with bitumen extraction and recovery.

Our aim is to minimize the environmental impact and protect employer’s health.

MIXING

admin — Mon, 19 Dec 2022 05:17:21 +0000

The Superpave mix design requires the mixing of various sizes of aggregates with bitumen, additives and possibly other synthetic resins. The bituminous mixture is prepared at a target temperature within a time that is limited in order to reduce mechanical degradation of the aggregates. The target temperature depends on the grade of bitumen as well as on the type of mixture to be obtained.

IMPACT offers a wide range of Laboratory Mixers capable of coating all coarse and fine aggregates by controlling temperature and mixing speed.