necessary for ASRto be occur in concrete

e-ISSN: 2582-5208 International Research Journal of Modernization in Engineering Technology and Science

Volume:03/Issue:02/February-2021 Impact Factor- 5.354 www.irjmets.com

Fig. -2: Mortar bars placed in water

Fig. -3: Length comprator

Fig. -4: Climatic chambers The linear expansion of each specimen is obtainedas follows Expansion, % = 100 x (Ln − L0) / l

Where: Lo -Zero reading i.e. reading of prisms before placing it into sodium hydroxide solution Ln –Reading at each interval after placing it into sodium Hydroxide solution, where n represents the interval l -Distance between the ends of the gauge studs, measured to the nearest of 0.1 mm(5).

IV. TEST RESULTS AND ANALYSIS

The test ASR of crushed gravel source A and B, with OPC cements after 14 days gave the results which are presented in Figure 5 and Figure 6.