PDF Publication Title:
Text from PDF Page: 005
Appl.Sci.2022,12,2867 (a) (b) 5of20 Figure 3. (a) Shore hardness meter type D. (b) Bobbin with valorised material. 2.4. Characterisation of Recycled Fibres 2.4. Characterisation of Recycled Fibres The polymer fibres used in concrete must fulfil both the mechanical and geometric The polymer fibres used in concrete must fulfil both the mechanical and geometric performance requirements of the EN 14889-2:2008 standard [57]. A random sample of 100 performance requirements of the EN 14889-2:2008 standard [57]. A random sample of fibres was used. Due to their surface irregularity, three diameter measurements were 100 fibres was used. Due to their surface irregularity, three diameter measurements were taken along the entire length of the fibre and the average was calculated. Moreover, a taken along the entire length of the fibre and the average was calculated. Moreover, a surface analysis of the fibre was carried out, as it plays a fundamental role in the adher- surface analysis of the fibre was carried out, as it plays a fundamental role in the adherence ence to the concrete matrix, calculating the roughness parameters in accordance with the to the concrete matrix, calculating the roughness parameters in accordance with the EN EN ISO 4287:1999 standard [58]. A three-dimensional table TESA-Micro-Hite 3D was used ISO 4287:1999 standard [58]. A three-dimensional table TESA-Micro-Hite 3D was used to to analyse the roughness of the fibres, as shown in Figure 4. analyse the roughness of the fibres, as shown in Figure 4. (a) (b) Figure 4. (a) Three-dimensional table. (b) Detailed fibre measurement. Figure 4. (a) Three-dimensional table. (b) Detailed fibre measurement. 2.5. Concrete Mix Proportions A CEM III 32.5 SR type Portland cement was used for this work, in accordance with the EN 197-1 standard [59]. The concrete mixture was made with siliceous sand 0–2 mm, limestone sand 0–3 mm, and limestone gravel 6–12 mm. The grading curves of the aggregates are shown in Figure 5. A superplasticiser addition MasterEase 3850 was used to reduce the water and recycled polyethylene fibres. MasterEase 3850 is a highly active superplasticising and water-reducing admixture based on new polymer technology for the production of low viscosity concrete even at low water content. A total of 3 different concretes were designed: a control concrete (HFC), a fibre- reinforced concrete with a volume of 4 kg/m3 (HRFP-4), and finally, a fibre-reinforced concrete with a volume of 2 kg/m3 (HRFP-2), see Table 1.PDF Image | Recycled Polyethylene Fibres for Structural Concrete
PDF Search Title:
Recycled Polyethylene Fibres for Structural ConcreteOriginal File Name Searched:
applsci-12-02867.pdfDIY PDF Search: Google It | Yahoo | Bing
Development of a solar powered Electric Ship The Electricship website originally started off as a project to develop a comprehensive renewable, affordable, modular electric ship... More Info
Modular Boat Hull Composite The case for a unsinkable, modular composite hybrid boat hull... More Info
MS Burgenstock Hybrid Electric Catamaran Lake Lucerne Unique shuttle servicing Lucerne to the Burgenstock Resort... More Info
Ground Power Unit GPU Powered by Lithium Ion Batteries The goal of the Ground Power Unit is to provide a readily accessible, modular, ready-to-power solution for remote power... More Info
CONTACT TEL: 608-238-6001 Email: greg@electricship.com (Standard Web Page)