Evaluations of All-in-One, Polycarboxylate-Based Superplasticizer with Viscosity Modifying Agents for the Application of Normal-Strength, High-Fluidity Concrete
- Title
- Evaluations of All-in-One, Polycarboxylate-Based Superplasticizer with Viscosity Modifying Agents for the Application of Normal-Strength, High-Fluidity Concrete
- Author
- 양현민
- Keywords
- polycarboxylate-based superplasticizer; normal-strength; high-fluidity concrete; viscosity; rheology; workability
- Issue Date
- 2021-11
- Publisher
- MDPI
- Citation
- APPLIED SCIENCES-BASEL; DEC 2021, 11 23, p11141 13p.
- Abstract
- High fluidity concrete exhibits an excellent self-compacting property. However, the
application of typical high-fluidity concrete is limited in the normal strength range (18~35 MPa)
due to the large amount of binder. Therefore, it is important to solve these problems by adding a
viscosity modifying agent (VMA) with a superplasticizer (PCE), which helps to improve the fluidity
of the concrete. In addition, the rheology and stability of the concrete with VMA can be improved by
preventing bleeding and segregation issues. Current studies focused on the physical phenomena of
concrete such as the fluidity, rheological properties, and compressive strength of normal-strength,
high-fluidity concrete (NSHFC) with different types of a polycarboxylate-based superplasticizer
(NPCE). The obtained results suggested that the combinations of all-in-one polycarboxylate-based
superplasticizers (NPCE) did not cause any cohesion or sedimentation even stored for a long time.
The combination of three types of VMA showed the best fluidity (initial slump flow of 595~630 mm)
without any segregation and bleeding, and the compressive strength at 28 days was also found to be
the highest: 34–37 MPa. From these results, the combination of PCE (2.0%) + HPMC (0.3%) + WG
(0.1%) + ST (0.1%) showed an 18% higher plastic viscosity and -4.4% lower yield stress than Plain.
- URI
- https://www.proquest.com/docview/2608081496?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/169633
- ISSN
- 20763417
- DOI
- 10.3390/app112311141
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ETC
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