PMID- 37176214
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230515
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 16
IP  - 9
DP  - 2023 Apr 24
TI  - The Influence of Blast Furnace Slag on Cement Concrete Road by Microstructure 
      Characterization and Assessment of Physical-Mechanical Resistances at 150/480 
      Days.
LID - 10.3390/ma16093332 [doi]
LID - 3332
AB  - The results presented in this paper on the appropriateness of using of blast 
      furnace slag (BFS) in the composition of roads make an original contribution to 
      the development of sustainable materials with the aim to reduce the carbon 
      footprint and the consumption of natural resources. The novelty of this work 
      consists of determining the optimal percentage of BSF in road concrete, in order 
      to: increase mechanical resistances, reduce contractions in the hardening 
      process, and ensure increased corrosion resistances, even superior to classic 
      cement-based mixtures. Thus, the physical-mechanical characteristics and the 
      microstructure of some road concretes were studied in the laboratory for three 
      different recipes. We kept the same amount of ground granulated blast furnace 
      slag (GGBS) as a substitute for Portland cement, respectively three percentages 
      of 20%, 40%, 60% air-cooled blast furnace slag (ACBFS) and crushed as sand 
      substitute from now on called S54/20, S54/40, S54/60. Drying shrinkage, 
      mechanical resistances, carbonation-induced corrosion, microstructure 
      characterization of hardened concretes, and degree of crystallinity by SEM and 
      XRD measurements were analyzed after a longer curing period of 150/480 days. The 
      obtained results on the three BSF mixtures indicated a reduction of drying 
      shrinkage and implicitly increased the tensile resistance by bending to 150 days 
      well above the level of the blank composition. The degree of crystallinity and 
      the content of the majority phases of the mineralogical compounds, albites, 
      quartz, and tobermorite out of the three BSF samples justifies the increase in 
      the compressive strengths at the age of 480 days in comparison with the test 
      samples. Scanning electron microscope (SEM) and X-ray diffraction measurements 
      showed the highest compactness and lowest portlandite crystal content for the 
      S54/20 slag composite. Future research concerns are the realization of 
      experimental sections in situ, the study of the influence of BFS on the 
      elasticity module of road concrete, and the opportunity to use other green 
      materials that can contribute to the reduction of the carbon footprint, keeping 
      the physical and mechanical properties of road concrete at a high level.
FAU - Nicula, Liliana Maria
AU  - Nicula LM
AD  - Faculty of Civil Engineering, Technical University of Cluj-Napoca, 28, 
      Memorandumului Street, 400114 Cluj-Napoca, Romania.
AD  - Faculty of Construction, Cadastre and Architecture, University of Oradea, 4, B.S. 
      Delavrancea Street, 410058 Oradea, Romania.
FAU - Manea, Daniela Lucia
AU  - Manea DL
AUID- ORCID: 0000-0001-5253-1688
AD  - Faculty of Civil Engineering, Technical University of Cluj-Napoca, 28, 
      Memorandumului Street, 400114 Cluj-Napoca, Romania.
FAU - Simedru, Dorina
AU  - Simedru D
AUID- ORCID: 0000-0003-4914-6986
AD  - INCDO-INOE2000, Subsidiary Research Institute for Analytical Instrumentation 
      Cluj-Napoca, 67 Donath Street, 400293 Cluj-Napoca, Romania.
FAU - Cadar, Oana
AU  - Cadar O
AUID- ORCID: 0000-0002-0879-9211
AD  - INCDO-INOE2000, Subsidiary Research Institute for Analytical Instrumentation 
      Cluj-Napoca, 67 Donath Street, 400293 Cluj-Napoca, Romania.
FAU - Becze, Anca
AU  - Becze A
AUID- ORCID: 0000-0003-1418-689X
AD  - INCDO-INOE2000, Subsidiary Research Institute for Analytical Instrumentation 
      Cluj-Napoca, 67 Donath Street, 400293 Cluj-Napoca, Romania.
FAU - Dragomir, Mihai Liviu
AU  - Dragomir ML
AUID- ORCID: 0000-0002-4503-1340
AD  - Faculty of Civil Engineering, Technical University of Cluj-Napoca, 28, 
      Memorandumului Street, 400114 Cluj-Napoca, Romania.
LA  - eng
GR  - POCU/993/6/13/153437./This research was funded by Project "Network of excellence 
      in applied research and innovation for doctoral and postdoctoral programs / 
      InoHubDoc", project co-funded by the European Social Fund financing agreement/
PT  - Journal Article
DEP - 20230424
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC10179734
OTO - NOTNLM
OT  - air cooled blast furnace slag (ACBFS)
OT  - carbonation
OT  - cement concrete roads
OT  - concrete microstructure
OT  - concrete shrinkage
OT  - ground granulated blast furnace slag (GGBS)
OT  - mechanical resistances
COIS- The authors declare no conflict of interest.
EDAT- 2023/05/13 15:12
MHDA- 2023/05/13 15:13
PMCR- 2023/04/24
CRDT- 2023/05/13 01:31
PHST- 2023/03/09 00:00 [received]
PHST- 2023/04/18 00:00 [revised]
PHST- 2023/04/21 00:00 [accepted]
PHST- 2023/05/13 15:13 [medline]
PHST- 2023/05/13 15:12 [pubmed]
PHST- 2023/05/13 01:31 [entrez]
PHST- 2023/04/24 00:00 [pmc-release]
AID - ma16093332 [pii]
AID - materials-16-03332 [pii]
AID - 10.3390/ma16093332 [doi]
PST - epublish
SO  - Materials (Basel). 2023 Apr 24;16(9):3332. doi: 10.3390/ma16093332.