Effect of Water Reducing Agent and Retarder on Properties of Ternesite-Calcium Sulfoaluminate Cement Synthesized at Low Temperatures

The setting time of ternesite-calcium sulfoaluminate (TCSA) is shorter while the fluidity and mechanical strength are lower. Herein, method synergistic regulation polycarboxylate superplasticizer β-cyclodextrin was adopted to solve this. results showed that, compared reference sample, when 0.25% compounded with 0.05% β-cyclodextrin, TCSA prolonged, increased by 118% (201 mm). And net pastes compressive reached 73.9 MPa 103.8 for 7 days 28 days, respectively. In addition, under effect early hydration heat rate decreased significantly, which delayed formation ettringite. Meanwhile, density product improved due reduction water consumption, thus achieving normal time, suitable high strength. Moreover, cement has good frost resistance.