[PDF] Top 20 TítuloOverview of bituminous mixtures made with recycled concrete aggregates

... amounts of hazardous waste such as asbestos and phenol ...composition of C&DW [14, 16-19] consists mainly of variable percentages of concrete, masonry, asphalt, wood, metal, gypsum, ... See full document

... Recycled concrete aggregates (RCA) from construction and demolition waste (CDW), have been widely used in construction as concrete or unbound pavement layers [1, 2], because they have numerous ... See full document

... influence of each factor on the response, but also the interaction between them and eventually nonlinear terms that confer curvature to the response ...set of runs is designed to achieve the maximum amount ... See full document

... case of demolished or collapsed concrete, reusable for the elaboration of new concrete mixtures, the following objectives must be accomplished: a) the reuse of solid waste, ... See full document

... materials made with recycled concrete aggregates (RCA) from construction and demolition waste (CDW), such as concrete or unbound pavement layers (Arm, 2001; Tam et ... See full document

... quality of coarse aggregate is to encapsulate the 4/8 mm RCA fraction with a layer of cement ...results of resistance indicate that the new technique of coating the surface of ... See full document

... amount of water is required. However in this case of RA with high content of ceramic material and adhered mortar in the mixture, the amount of added water used in this study was ... See full document

... feasibility of reusing construction and demolition waste as recycled concrete aggregate (RCA) to manufacture half-warm mix asphalt (HWMA) instead of natural ...Percentages of 0% ... See full document

... increased with the RCA ...roughness of the RCA, which made it more difficult to compact the ...character of the ...range of bitumen contents tested (3.5% to 4.5%), the mixtures ... See full document

... mixture with half-warm mix recycled asphalt mixtures in a total length of 400 m and 5cm in depth laid in the entire carriageway width for their use in binder course asphalt ...rebuilt ... See full document

... RTFOT of 4 hours of ageing time, both at lower (Figure 6c) and higher (Figure 6d) ...that of the extended RTFOT procedure, increasing the elastic behaviour of the ...from mixtures ... See full document

... 4 aggregates. To a lesser extent, it includes a certain amount of impurities, such as ceramics, metal pieces, gypsum, plastics or ...Some of these required the use of an X-ray diffractogram in ... See full document

... minimum of three samples for each of the three stress levels were tested, so that a minimum of 10 samples were tested for each RCA ...out of this range, the load must be ... See full document

... review of the technical literature, we observed that the results of the research were quite ...resistance of HMA made with RCA is a property about which there is a wide disparity ... See full document

... Several authors have found that stiffness degradation due to moisture damage is reversible after re-drying the mixtures (Apeagyei et al., 2016). Thus, it is interesting to determine if tensile strength degradation ... See full document

... exploitation of natural aggregates deposits have changed the scenery due to its depression many areas, generating serious problems of environmental ...recycling aggregates have become a valid ... See full document

... durability of five different mixtures of concrete with varying contents of activated fly ash (CVA) and Portland cement type CPC ...speed of ultrasonic pulse, electrical ... See full document

... durability of five different mixtures of concrete with different contents of activated fly ash (AFA) and Portland cement (CPC ...speed of ultrasonic pulse, electrical ... See full document

... for mixtures M1, M2, M3, M4 and M5. According to Figure 3, the mixtures with AFA content showed apparent electrical resistivity values higher than the mixture without AFA (M1), which reached a ... See full document

... generation of solid residues of hydraulic concrete, also considered waste, is turning into an environmental ...one of the main problems is its high manufacturing temperature which generates ... See full document