The Compressive Strength of Segmental Interlocking Stones Used as Pavement Materials

摘要

Sandcrete is composed of aggregates embedded in a cement matrix which fill the space between the aggregates and bind them together. This project investigated the compressive strength of segmental interlocking stone used as pavement materials. The influence of mix proportion at three levels with varying water-cement ratio was also studied. Analysis of trial points and control points were considered. Sieve analysis and compressive strength test(s) were carried out appropriately. The sandcrete interlocking stones were cast with strict adherence to measurements of each constituent by using weighing scale. The sandcrete interlocking stones were cured and after 28 days, the compressive strength test was done by using compression test machine. The result of crushing test gave the maximum compressive strength of 20N/mm2 with mix ratio 1.4670:8.0683 with water/cement ratio 0.8068 for three pieces. Also, the maximum compressive strength of 20N/mm2 is below the limit specified for concrete interlocking stone according to BS code 6717 – 1 – 2001 which is 25N/mm2. As there is no standard compressive strength interlocking stone, the mix ratio specified above will be economically viable.