Instrumented drop weight impact tests were performed on 15 identical phosphate cement composite laminates, reinforced with glass fibre chopped strand mats (fibre volume 24%), clamped along their four edges. The level of the impact energy was varied between 3.7 J and 69.5 J by changing the drop height of the impactor. Contact force-deflection curves were obtained for each impact test, and assembled to a master curve for all tests. The obtained ...