2.2 LWC including expanded clay aggregates

In 2015, other researchers studied the properties of LWC consisting of cinder and light expanded clay aggregates (LECA) [3]. By replacing coarse aggregate with blended lightweight aggregates such as cinder and LECA, there was a reduction in weight and, respectively, a decrease in compressive strength, but they were able to use cinder and LECA as a replacement for normal coarse aggregate to reduce the cost, while the compressive strengths were close to the strengths of NWC. The average compressive strength for samples that included the abovementioned LWA was 39.2 N/mm<sup>2</sup> , while the average compressive strength for NWC was 43.4 N/mm<sup>2</sup> . The density of the LWC varied from 1800 to 1950 kg/mm3 and the density for the NWC was 2637 kg/m<sup>3</sup> . The slump from the fresh concrete mix and the average compressive and tensile strength of the hardened concrete were analyzed in the research.
