Laboratory and Field Evaluation of RAP for Cement Concrete Pavements
01 Jun 2020-Vol. 146, Iss: 2, pp 04020011
TL;DR: In this article, the feasibility of coarse reclaimed asphalt pavement (RAP) for dry lean concrete (DLC) and pavement quality concrete (PQC) mixes is assessed through laboratory and field experiments.
Abstract: In the present study, the feasibility of coarse reclaimed asphalt pavement (RAP) for dry lean concrete (DLC) and pavement quality concrete (PQC) mixes is assessed through laboratory and fie...
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TL;DR: A review of the utilization of reclaimed asphalt pavement aggregates in roller compacted concrete pavement (RCCP) mixes is presented in this paper, where several issues and factors affecting the fresh and hardened properties of RCCP mixes due to the incorporation of RAP are discussed.
28 citations
TL;DR: In this article, the authors describe an investigation into the assessment of performance and suitability of pervious paver blocks (PPB) using reclaimed asphalt pavement (RAP) aggregates.
17 citations
TL;DR: In this article, the use of RAP aggregates with cementitious materials for pavement foundation layers is discussed, and a review of the properties of fresh and hardened RAP in cementitious matrices, as well as changes in the microstructure.
15 citations
TL;DR: In this article, the use of the mixture of three residues, evaluating the feasibility of using these as a pavement layer, has been studied, and a generalized approach to replace the laborious durability test is proposed, and limitations are observed.
Abstract: The use of domestic, industrial and construction waste has been gaining considerable space in recent decades in view of the social and environmental concern in preserving and reusing natural resources. Thus, this article has the premise of studying the use of the mixture of three residues, evaluating the feasibility of using these as a pavement layer. The first residue is the reclaimed asphalt pavement (RAP) coming from the milling of the asphalt coating of a pavement. The second material used is carbide lime (CL), a residue from the production of acetylene gas that will act as a cementing agent. To react with the carbide lime, a third material was also used: the flat ground glass, since it has a high content of SiO2 in its composition. Thus, it is possible that pozzolanic reactions occur with calcium ions in lime, forming cementing compounds and acquiring properties of strength, durability and rigidity. It was evaluated the variation of the carbide lime (3 and 7%), the dry unit weight (19 and 20 kN/m3) and the ground glass (GG) content passing through the #200 sieve (10, 15 and 25%) in front of the unconfined compression, split tensile, durability and rigidity tests. The results show that the effect of each of the selected variables is considered satisfactory to obtain significant results for each of the tests. The porosity/binder index [η/Biv0.28] proved to be adequate for predicting the mechanical behavior of the mixtures, and it was even possible to make correlations between test results. Furthermore, a generalized approach to replace the laborious durability test is proposed, and limitations are observed.
8 citations
TL;DR: In this paper, the performance of concrete paver blocks using coarse and fine fractions of non-beneficiated reclaimed asphalt pavement (RAP) materials, derived as a waste residue from demolished asphalt pavement, was comprehensively and comparatively investigated.
7 citations
References
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01 Jan 1970
TL;DR: In this paper, the authors investigated the effect of incorporating bitumen in DRY LEAN CONCRETE MIXES and found that when BITUMEN is used as a pre-conditioning around the road base, there is a substantial reduction in strength.
Abstract: DETAILS ARE PRESENTED OF A LABORATORY INVESTIGATION OF THE EFFECT OF INCORPORATING BITUMEN IN DRY LEAN CONCRETE MIXES WHICH WAS UNDERTAKEN AS PART OF A STUDY OF THE INCIDENCE OF CRACKS IN ROAD BASES CONSTRUCTED USING DRY LEAN CONCRETE. THE RESULTS OBTAINED SUGGEST THAT REPLACING EITHER 10% OR 20% OF THE MIXING WATER WITH BITUMEN EMULSION IS UNLIKELY TO CHANGE SIGNIFICANTLY CRACK SUSCEPTIBILITY BUT, WHEN BITUMEN IS CONCENTRATED AS A PRECOATING AROUND THE COARSE AGGREGATE PARTICLES, THERE IS A SUBSTANTIAL REDUCTION IN COMPRESSIVE STRENGTH, IN TENSILE STRENGTH AND IN MODULUS OF ELASTICITY. /AUTHOR/
8 citations
31 Jan 2017
2 citations