| Scope and Method of Study. This thesis highlights effects of SCC on the bond performance of pre-stressing strands. The Standard Test for Bond (also called the North American Strand Producers Bond Test) was performed to evaluate the effect of 0.5 in strand with various SCC mixtures. Research variables include coarse aggregate content and sizes with a fixed rate of HRWRA and VMA. From these test, the pull out values are used to determine whether SCC causes a change in the bond strength of pre-stressing strand. With this, the effects of SCC proportions on the bond properties can be evaluated.;Findings and Conclusions. The test method showed strong correlation between the Mortar and the SCC bond strength values both with mortar strength and concrete strength. This indicated that the test is a reliable as a standardized bond test. The statistical analysis showed that the mix design had a strong impact with the SCC bond strength. In order to balance the better fresh properties and the higher bond strength, the key is to work on different types of fines as a substitute for coarse aggregates with the HRWRA and VMA in different SCC mixes. SCC behaves very much the same as Normal Concrete in terms of Bond Strength. |
