... = 1.00, 5% PP increased 28-day UCS by 23% compared to the control mixture. Higher PP contents (≥15%) reduced fluidity and strength due to increased water demand and cement dilution. The results indicate that incorporating 5–10% PP with w/b ratios between 1.00 and 1.25 offers an optimal...

... effects of polycarboxylate superplasticiser ( PCE ) and calcium nitrite additions on the fluidity, setting times and compressive strengths of BTCSA . The hydration kinetics and microstructural evolution of BTCSA were characterised using isothermal conduction calorimetry, X-ray diffraction and scanning...

...Lianjun Chen; Jiahao Sun; Guoming Liu; Chunkui Li Air-entrained wet shotcrete improves the pipeline transportation efficiency of concrete. The characteristics of the fine aggregate in the mix have different effects on the fluidity and mechanical properties of air-entrained wet shotcrete...