This study investigates the solidification/stabilization process of electroplating sludge in mortars with internal curing promoted by porous aggregates (lightweight and recycled aggregate). For that, cementitious mortars were manufactured with recycled or lightweight fine aggregates added in two conditions: saturated and dried before the mortar preparation. They were incorporated in partial replacement of the natural aggregate. As well, 8.5% and 100% of electroplating sludge (liquid) in relation to the total water content in the mortars were replaced, to assess the fixation of contaminants. For this, were determined the physical properties of aggregates (density, absorption, compliance test, and others), then the mortars were prepared and evaluated for consistency, absorption by immersion, mechanical strength, leaching and others. The results showed that the LWA and RCA presented 99.9 and 96.7% efficiency in Pb adsorption, receptively. Also, for Zn, the RCA presented 98% efficiency in adsorption in the solutions. The cement consumption was reduced, on average, from 490 kg m⁻³ with NA to 470 kg m⁻³ with RCA and to 405 kg m⁻³ with LWA. The leaching test of the mortars showed that 100% of the Cr and Ni from the solution was adsorbed by the mortars. In the compliance tests, the Cr metal was not leached from the crushed mortars, and in the partial-added mortars, zinc was leached in less quantity in comparison with the reference series (48% less, on average). The results show that the incorporation of electroplating sludge in mortars did not alter their properties, as well as the replacement of 25% of the natural aggregate by recycled aggregate. Finally, the recycled aggregate can be used to partially replace the natural aggregate, increasing its potential for use and without causing damage to the final material. As well as the recycled and lightweight aggregate proved to be an effective chemical sorbent for the studied electroplating residue.

本研究调查了由多孔骨料（轻质和再生骨料）促进内部固化的砂浆中电镀污泥的固化/稳定过程。为此，水泥砂浆是在两种条件下添加回收或轻质细骨料制造的：在砂浆制备之前饱和和干燥。它们被纳入部分替代天然骨料。同样，相对于砂浆中总含水量的 8.5% 和 100% 的电镀污泥（液体）被替换，以评估污染物的固定。为此，确定了骨料的物理特性（密度、吸收、柔顺性测试等），然后制备并评估砂浆的稠度、浸渍吸收、机械强度、浸出等。结果表明，LWA 和 RCA 对 Pb 的吸附效率分别为 99.9% 和 96.7%。此外，对于 Zn，RCA 在溶液中的吸附效率为 98%。平均水泥消耗量从 490 kg m 减少⁻³ NA 至 470 kg m ^-3 RCA 至 405 kg m ⁻³与 LWA。砂浆的浸出试验表明，溶液中 100% 的 Cr 和 Ni 被砂浆吸附。在符合性测试中，Cr 金属没有从粉碎的砂浆中浸出，在部分添加的砂浆中，与参考系列相比，锌的浸出量更少（平均少 48%）。结果表明，在砂浆中加入电镀污泥并没有改变其性能，并且再生骨料替代了25%的天然骨料。最后，再生骨料可用于部分替代天然骨料，增加其使用潜力，并且不会对最终材料造成损坏。以及回收和轻质骨料被证明是所研究的电镀残留物的有效化学吸附剂。