Effect of storage condition on basic performance of polycarboxylate superplasticiser system incorporated sodium gluconate

Synthesis and optimization of a montmorillonite-tolerant zwitterionic polycarboxylate superplasticizer via Box-Behnken design

“…Different organic chemicals have been applied in clay in efforts to enhance their efficiency and the interactions between them have been conducted (Zhang et al, 2020;Shen et al, 2020;Li et al, 2019;Tan et al, 2019;Guo et al, 2020). As one of the most important chemical admixtures, polycarboxylate-based (PCE) superplasticisers are a type of clay sensitive superplasticiser; contamination by clay or silt makes it inherently incompatible with aggregates (Wala & Rosiek, 2003;Dziekan et al, 2011;Tan et al, 2018a;Ren et al, 2019;Ren et al, 2021). This negatively impacts the dispersion of PCE and the workability and pumpability of the concrete containing it (Lei & Plank, 2012b).…”

“…Previous studies have generally centred on trial-and-error rather than precise optimization processes. Compared to traditional experimental methods, response surface methodology such as the Box-Behnken Design (BBD) or Central Composite Design (CCD) facilitates a systematic, efficient strategy to correlate the interactive effects of numerous parameters simultaneously by statistical procedures (Ren et al, 2019).…”

“…One of the most important chemical admixtures, polycarboxylate superplasticizers (PCEs), is a type of clay-sensitive superplasticizer. However, contamination by clay or silt makes PCE inherently incompatible with aggregates (Wala & Rosiek, 2003;Dziekan et al, 2011;Ren et al, 2019Ren et al, , 2021Tan et al, 2018a). This negatively impacts the dispersion of PCE and the workability and pumping ability of the concrete (Lei & Plank, 2012b).…”

Performance-Based Evaluation of Healing Efficiency on Mechanical Properties of Self-Healing Cementitious Materials Incorporated with PMMA/Epoxy Microcapsule

“…It is well-known that the as a mathematical and statistical approach, response surface methodology (RSM) has been widely applied to investigate the influence of independent variables and the interaction among those independent variables, which has demonstrated a great potential for experimental optimisation, particularly in optimising the rheological parameters, hydration and mechanical properties of cementitious materials [35][36][37][38]. Among different RSM approaches, Box-Behnken design (BBD), a rotatable second-order design developed from the three-level factorial design, is often used as a tool for investigation of the influence of variables, in particular, the cases with interactions among variables, due to fewer testing requirements, which has been applied in cement and concrete research [39].…”

Synergistic Effect of Polycarboxylate Superplasticiser and Protein Retarders in Cementitious Materials Containing Na- Montmorillonite: Effect of Addition Methods

“…As another important category of admixture, the retarders has been used to regulate the setting behaviours in a cementitious system with fast hydration [ 43 , 44 , 45 ]. To achieve multiple performances in adjusting the properties of cement, the retarders are often combined with the PCEs in a Portland cement-based system or those novel cementitious systems [ 46 , 47 ]. However, in cementitious system with clays, the combination of PCE with retards has not been extensively research.…”