01658568

Component

Portland limestone cement can be considered as a suitable alternative for portland cement in self-consolidating lightweight concrete (SCLWC) mixtures. However, certain inconsistencies were reported in terms of strength development and durability properties of the portland limestone cement concrete. In addition, fresh SCLWC mixtures are more likely to encounter test results variation than ordinary concrete. This paper experimentally investigates the performance of SCLWC incorporating ternary blended cements containing portland limestone cement and silica fume, fly ash, natural zeolite or metakaolin. The results show that the pozzolanic materials mixtures have greater but less variable results of flowability compared to the portland limestone mixture. The coefficient of variation in results of slump flow test is varied 0.8-2.9%. It was also observed there is a reduction in variation of the V-funnel results as the mean value increased. The obtained coefficient of variation was as low as 7% for zeolite ternary mixtures and the highest variation belonged to the binary mixture by 19.2%. The result of rapid chloride migration test (RCMT) and electrical resistance test indicated that there is a strong correlation between these two variables. Comparing the results to other studies, we recognized that the correlation seems to be unique for each case study.

This paper was sponsored by TRB committee AFN10 Standing Committee on Basic Research and Emerging Technologies Related to Concrete.

18-01499

English

15p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; References; Tables

Admixtures; Concrete tests; Lightweight concrete; Limestone; Portland cement; Pozzolan; Self compacting concrete

Blended cement

Construction; Highways; Materials; Pavements

Transportation Research Board Annual Meeting 2018 Paper #18-01499

TRIS, TRB, ATRI

Jan 8 2018 10:23AM