Abstract
Given the importance of light construction in terms of better performance of structure, in case of earthquake, reduction of life and financial casualties, as well as shortage of studies in this field, the present research studied building non-structural lightweight blocks using lightweight aggregates of Scoria, Pumice and Leca. On the other hand, density, compressive strength, and water absorption volume of these blocks have been investigated in this research in order to replace traditional materials with them. The experiments’ results show that, due to hardness and strong texture, high mechanical resistance of their lightweight aggregate Scoria blocks have higher compressive strength and density but lower water absorption volume compared to Pumice and Leca lightweight aggregate blocks. Despite desirable compressive strength and lower density compared to the other two blocks, pumice blocks have higher water absorption volume, and they do not meet standards. This makes them less interesting. Among these Leca blocks with density of 1151.94 (kg/m3) below 2000 kg/m3 of Iran density standard of 7782 (28-day compressive strength of 2.57 MPa), higher than 2.5 MPa of Iran compressive strength standard of 7782 (and water absorption volume of 282.92 kg/m3) and below 288 kg/m3 of Iran water absorption volume standard of 7782 (as a non-load-bearing lightweight block), has been recognized desirable.
Highlights
With the occurrence of numerous deadly earthquakes around the world these days, engineers have found that light construction structures against seismic force is one of the most scientific, practical and economic strategies for risk mitigation and damage caused by earthquakes [1]
Style) on Leca Lightweight Aggregate Blocks are Visible in Figures 11–13
Density has with water absorption volume in lightweight aggregate blocks
Summary
With the occurrence of numerous deadly earthquakes around the world these days, engineers have found that light construction structures against seismic force is one of the most scientific, practical and economic strategies for risk mitigation and damage caused by earthquakes [1] One such method is to use new materials along with modern techniques in construction industry [2]. Lightweight aggregates that are naturally formed often have volcanic origin like Pumice (Pumice stone), Scoria (Pumice), volcanic ash, and tuffs They have been created as the result of lava entrance into the water reservoirs such as seas and lakes and its rapid cooling, which forms gas bubbles in minerals. Others such as Diatomite, are sedimentary, and some others have metamorphic origins such as Vermiculite
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