Abstract Concrete is the most widely used construction material in world. Over ten billion tons of concrete are being produced each year resulting exhaustion natural materials and an enormous carbon footprint. One primary goals technology today to reduce use Portland cement fine aggregates by partially replacing them with various waste by-products industrial processes. The paper summarizes resu...

A montmorillonite clay and a palagonitic soil sample were sieved to produce a series of size fractions in order to investigate the role that extremely fine particle sizes play on absorption strengths in martian analog materials. Significant decreases in band strength for both samples were observed as particle size decreased. The less than 5-μm fractions had 1.4-, 1.9-, and 2.2-μm bands that wer...

High strength mortar using coal gasification slag fine aggregate were examined. As a result, the higher replacement rate of gasified aggregate, slightly flow value mortar. And, due to increase in compressive decreased high-strength region and increased general region. Furthermore, even under condition that was 100%, it possible obtain exceeding 100 N/mm2.