Strength Characteristics of Styrene-Acrylic Cement Composite

[摘要] Styrene-acrylic cement composite (SACC) is prepared by using styrene-acrylic emulsion, cement, etc. The change rules of tensile strain-stress curve, tensile strength and tensile modulus under the three factors: liquid to powder ratio, cement ratio and packing type were investigated through the method of orthogonal experiment. The results show that liquid to powder ratio is the main factor influencing the strength characteristics of SACC. With the increase of liquid to powder ratio, the flexibility of SACC is gradually enhanced. With the decrease of liquid to powder ratio, tensile strength and tensile modulus is increased. When the liquid to powder ratio is at 1:0.85, with the increase of cement ratio, peak stress and strain before the peak of the tensile strain-stress curve is increased. Tensile strength and tensile modulus have an increased tendency with the increasing of cement ratio. Compared with heavy calcium carbonate and quartz flour, talcum powder has a stronger effect on the tensile strength and tensile modulus of SACC The influence of liquid to powder ratio, cement ratio and packing type to SACC is arranged as: liquid powder ratio, packing type, cement ratio. Polymer cement composite with average polymer-cement ratio used for joint sealing materials is feasible.

[发布机构] Department of Airfield and Building Engineering, Air Force Engineering University, Xi'an; 710038, China^1;College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi'an; 710072, China^2

[效力级别] 经济学

[关键词] Heavy Calcium Carbonate;Liquid-powder ratios;Orthogonal experiment;Polymer cement composites;Polymer-cement ratio;Strain stress curve;Strength characteristics;Styrene-acrylic emulsion