Uniformity of in situ properties of self-compacting concrete in full-scale structural elements
Source abstract
Abstract
Abstract Inadequate homogeneity of the cast concrete due to poor compaction or segregation may dramatically lower the performance of mature concrete in situ. To ensure adequate compaction and facilitate placement of concrete in structures with congested reinforcement and in restricted areas, self-compacting concrete (SCC) has been developed. Considering the highly flowable and self-levelling nature of the SCC, there are general concerns that segregation and settlement may occur during its transport and placing. This study was designed to provide information on uniformity of in situ properties of SCC mixes in practical structural columns and beams and to compare results with those of properly compacted conventional concrete. The in situ concrete properties were assessed by testing cores for in situ strength, pull-out of pre-embedded inserts and rebound hammer number for near-surface properties. The results indicated that there were not significant differences in uniformity of in situ properties between the SCC mixes and the corresponding well compacted conventional mixes.
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Research context
OpenAlex topics: Innovations in Concrete and Construction Materials · Innovative concrete reinforcement materials · Concrete and Cement Materials Research
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References (19)
Show source-provided references
1. Ozawa K, Maekawa K, Okamura H. Development of high performance concrete, J Faculty Eng, Univ Tokyo (B), 1992;XLI(3):381–439
2. Okamura H, Ouchi M. Self-compacting concrete, development, present use and future. In: Skarendahl A, Petersson O, editors. Proceedings of the RILEM Symposium on Self-Compacting Concrete. RILEM Publications S.A.R.L.: Stockholm; 1999. p. 3–14
3. Byfors J. SCC is an important step towards industrialisation of the building industry. In: Skarendahl A, Petersson O, editors. Proceedings of the RILEM Symposium on Self-Compacting Concrete. RILEM Publications S.A.R.L.: Stockholm; 1999. p. 15–21
4. Self-compacting concrete
5. In situ mechanical properties of wall elements cast using self-consolidating concrete
6. Khayat KH, Tremblay S, Paultre P. Structural response of self-consolidating concrete columns. In: Skarendahl A, Petersson O, editors. Proceedings of the RILEM Symposium on Self-Compacting Concrete. RILEM Publications S.A.R.L.: Stockholm; 1999. p. 291–306
7. Grauers M. et al., Rational production and improved working environment through using self-compacting concrete. Brite-EuRam Project No. BE96-3801/Contract BRPR-CT96-0366, Non-confidential information, 1998
8. Gibbs JC, Zhu W. Strength of hardened self compacting concrete. Brite-EuRam Project No. BE96-3801/Contract BRPR-CT96-0366, Non-confidential information, 1998, p. 199–209
9. Sonebi M, Bartos PJM. Hardened SCC and its bond with reinforcement. Brite-EuRam Project No. BE96-3801/Contract BRPR-CT96-0366, Non-confidential information, 1998, p. 275–290
10. Zhu W, Bartos PJM. Micro-mechanical properties of interfacial zone in self-compacting concrete. In: Proceedings of the Sixth International Symposium on Brittle Matrix Composites, October 2000, Poland (to be published)
11. British Standard Institution, BS1881: Part 120 – Method for determination of the compressive strength of concrete cores, 1983
12. British Standard Institution, Draft prEN12398: Testing concrete – Non destructive testing – Determination of rebound number, 1996
13. British Standard Institution, Draft prEN12399: Test concrete – Determination of pull-out force, 1996
14. British Standard Institution, Guide to assessment of concrete strength in existing structures, BS6089, 1981
15. Tamimi A. Results of LOK pull-out test, private communication
16. Bungey JH, Millard SG. Testing of concrete in structures, glasgow, blackie academic & professional. 3rd ed. London: Chapman & Hall; 199610.4324/9780203487839 ↗
17. Influence of finely ground limestone on cement hydration10.1016/S0958-9465(98)00020-1 ↗
18. Bijen J. Blast furnace slag cement. The Netherlands: Hertogenbosch; 1996
19. Neville AM. Properties of concrete. England: Longman; 1995