摘   要：为研究预制混凝土外墙保温板系统的连接安全性，开展了保温板与抹面砂浆、混凝土的拉伸黏结强度试验，并进行了不同锚固件（HY-80、HY-60和HY-40）反向拉拔力和变形特性研究。结果表明：乳液型界面剂可有效改善聚合物砂浆与保温板的相容性，相应界面黏结强度提升了约85%；保温板采用钢丝网构造加强措施有利于提高保温板与混凝土的界面黏结强度；HY-80和HY-60与HY-40不锈钢锚固件相比，其反向拉拔力分别提高了32.8%和20.0%，可有效提升预制混凝土外墙保温板系统的连接性能。 Abstract: In order to study the structural connection safety of the prefabricated concrete external wall insulation panel system, the tensile bond strength tests of the insulation panel surface mortar and concrete were carried out, and the reverse pull-out capacity and deformation characteristics of the anchors(HY-80, HY-60, HY-40) were analyzed. The results show that lotion type interfacial agent can effectively improve the compatibility of polymer mortar and silicone insulation panel, and the interfacial bonding strength is increased by 85%. At the same time, the insulation panel strengthened by steel mesh structure can improve of the bonding strength between the insulation panel and the concrete interface. Compared with HY-40 stainless steel anchors, using the HY-80 and HY-60 has 32.8% and 20.0% higher reverse pull-out force respectively, which can improve the connection performance of the prefabricated concrete external wall insulation panel system.

陈宁,董庆广,王娟.预制混凝土外墙保温板系统的连接性能研究[J].混凝土与水泥制品,2023(7):61-65. CHEN N,DONG Q G,WANG J.Research on the connection performance of the prefabricated concrete external wall insulation panel system[J].China Concrete and Cement Products,2023(7):61-65.

温永钦,姜婷婷,卢金山,改性再生塑胶颗粒对陶粒混凝土力学性能的影响研究[J].混凝土与水泥制品,2023(7):66-69,74. WEN Y Q,JIANG T T,LU J S,et al.Effect of modified recycled plastic particles on mechanical properties of ceramsite concrete[J].China Concrete and Cement Products,2023(7):66-69,74.

摘   要：为降低泡沫混凝土生产过程中的能耗，改善泡沫混凝土的性能，研究了流变性对高早强免蒸压泡沫混凝土发气效果和硬化后性能的影响。结果表明：当屈服应力超过200 Pa后，泡沫混凝土不再膨胀；高早强免蒸压泡沫混凝土的6 h抗压强度可以达到2.7 MPa，导热系数基本不大于0.20 W/（m·K）；浆体的屈服应力偏小可能导致孔隙率（体积密度）相近的泡沫混凝土导热系数相差30%，抗压强度相差100%左右。 Abstract: In order to reduce the production energy consumption and improve the performance of foamed concrete, the effect of rheological properties on gas generation and hardening properties of high early strength non-autoclaved foamed concrete was studied. The results show that the foamed concrete no longer expands when the yield stress exceeds 200 Pa. The 6 h compressive strength of high early strength non-autoclaved foamed concrete can reach 2.7 MPa, while the thermal conductivity is no more than 0.20 W/(m·K). The lower yield stress can lead to a 30% difference in thermal conductivity and a 100% difference in compressive strength for foamed concretes with similar porosity (or volume density).

凌建祥,董波,叶焕,等.流变性对高早强泡沫混凝土性能的影响[J].混凝土与水泥制品,2023(7):70-74. LING J X,DONG B,YE H,et al.Effect of rheological properties on the performance of high early strength foamed concrete[J].China Concrete and Cement Products,2023(7):70-74.