This study reports on the impact of the curing conditions on the mechanical properties and leaching of inorganic polymer (IP) mortars made from a water quenched fayalitic slag. Three similar IP mortars were produced by mixing together slag, aggregate and activating solution, and cured in three different environments for 28 d: a) at 20 °C and relative humidity (RH) ~ 50% (T20RH50), b) at 20 °C and RH≥90% (T20RH90) and c) at 60 °C and RH ~ 20% (T60RH20). Compressive strength (EN 196-1) varied between 19 MPa (T20RH50) and 31 MPa (T20RH90). This was found to be attributed to the cracks formed upon curing. Geochemical modelling and two leaching tests were performed, the EA NEN 7375 tank test, and the BS EN 12457-1 single batch test. Results show that Cu, Ni, Pb, Zn and As leaching occurred even at high pH, which varied between 10 and 11 in the tank test’s leachates and between 12 and 12.5 in the single batch’s leachates. Leaching values obtained were below the requirements for non-shaped materials of Flemish legislation for As, Cu and Ni in the single batch test.
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机译：本研究报告了固化条件对由水猝灭的脱铝渣制成的无机聚合物（IP）砂浆的机械性能和浸出的影响。通过将炉渣，骨料和活化溶液混合在一起，在20°C和相对湿度（RH）〜50％（T20RH50），B）下在20°C和50％（T20RH50），B）以28d的不同环境中固化三种类似的IP砂浆。 C和RH≥90％（T20RH90）和C）在60°C和RH〜20％（T60RH20）。抗压强度（EN 196-1）在19MPa（T20RH50）和31MPa（T20RH90）之间变化。发现这归因于在固化时形成的裂缝。进行地球化学建模和两个浸出测试，EA NEN 7375罐试验，以及BS EN 12457-1单批次测试。结果表明，即使在罐试验的渗滤液中的10到11之间也发生在10到11之间的高pH下，甚至在单批次的渗水液中变化10到11之间的Cu，Ni，Pb，Zn和浸出。所获得的浸出值低于单批次试验中的佛兰氏佛氏佛佛兰芒法立法的要求。
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