Enhancing the Mechanical Properties and Water Permeability of Pervious Planting Concrete: A Study on Additives and Plant Growth.

Pervious planting concrete (PPC) is in line with the concept of ecological environmental protection. However, due to its own porous structure, it is difficult to obtain excellent mechanical properties and water permeability at the same time, which hinders its promotion and application. In this paper, natural gravel (NG), ordinary Portland cement (OPC), polyvinyl alcohol latex powder (PVAP) and polycarboxylate superplasticizer (PS) were used to prepare the PPC, and its mechanical properties and water permeability were studied.

Properties of Alkali-Activated Slag Cement Activated by Weakly Alkaline Activator.

Sodium sulfate (NaSO) and sodium carbonate (NaCO) are weakly alkaline activators. Alkali-activated slag (AAS) cement prepared with them shows the special advantages of long setting time and low shrinkage, but it shows slow development of mechanical properties. In the paper, NaSO and NaCO were used as activators and compounded with reactive magnesium oxide (MgO) and calcium hydroxide (Ca(OH)) to optimize the setting time and mechanical properties.