我国在建筑施工行业每年需要消耗大量的水泥，而生产水泥需要消耗大量的资源。粉煤灰是燃煤发电产生的废弃物，若不能充分利用，粉煤灰的堆积会带来环境污染。为了提高粉煤灰的利用率，解决上述资源与环境的难题，鲁丽华等人编著的《粉煤灰混凝土的耐久性》一书。笔者通过对该书的学习，认为该书从背景概述到试验研究，再到结论分析，从不同角度分析了在冻融循环、腐蚀环境下粉煤灰混凝土及粉煤灰钢筋混凝土构件各项性能的发展规律，现简要总结如下。

孙红军.粉煤灰对混凝土耐久性的影响研究——评《粉煤灰混凝土的耐久性》[J].混凝土与水泥制品,2020(10):96.

摘   要：以10%、20%、30%的珊瑚粉等质量取代水泥制备珊瑚-水泥复合胶凝材料，研究了珊瑚粉对水泥胶凝材料标准稠度用水量、凝结时间、水化放热量、胶砂强度、电阻率和吸波性能的影响，并用XRD、SEM方法分析了珊瑚-水泥复合胶凝材料的物相和微观形貌。结果表明：珊瑚粉会使水泥胶凝材料的凝结时间延长，水化放热量减少，对标准稠度用水量影响不明显；珊瑚粉对水泥胶凝材料的力学性能不利，但仍能满足工程建设要求；掺入珊瑚粉后，试件的电阻率下降、导电性能增加、吸波性能降低；珊瑚-水泥复合胶凝材料的主要水化产物与水泥胶凝材料类似，没有新产物生成。 Abstract: Coral-cement composite cementitious materials were prepared by replacing cement with 10%, 20% and 30% coral powder. The effects of coral powder on water consumption of standard consistency, setting time, hydration heat, flexural strength and compressive strength, resistivity and wave absorbing performance of cement cementitious materials were studied. XRD and SEM were used to analyze the phase and microstructure of coral-cement composite cementitious materials.  The results show that coral powder prolongs the setting time of cement cementitious materials, reduces the hydration heat, and has no obvious influence on water consumption of standard consistency. Coral powder is unfavorable to the mechanical properties of cement cementitious materials, but it can still meet the needs of engineering construction. After adding coral powder, the resistivity of the specimens decreases, the conductivity increases, and the wave absorbing performance decreases. The main hydration products of coral-cement composite cementitious materials are similar to cement cementitious materials, without new products. 

王卓蕾,谢建斌,刘思楠,等.珊瑚-水泥复合胶凝材料性能研究及微观分析[J].混凝土与水泥制品,2020(10):87-90,95. WANG Z L,XIE J B,LIU S N,et al.Study on Properties and Microanalysis of Coral-cement Composite Cementitious Materials[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):87-90,95.

摘   要：选用一种低碱度超硫酸盐水泥制备了多孔混凝土，研究了不同掺量脱硫石膏对多孔混凝土pH值和力学性能的影响，分析了狗牙根、高羊茅、早熟禾、黑麦草和白喜草在多孔混凝土中的植生情况。结果表明：当脱硫石膏掺量为15%～20%，P·O 52.5水泥掺量为5%时，多孔混凝土的抗压强度最高；水胶比为0.3时，多孔混凝土的施工性和力学性能最优；脱硫石膏、P·O 52.5水泥和水胶比对多孔混凝土的pH值影响较小。制备的多孔混凝土pH值较低，能够满足植物生长需求，其中，高羊茅和白喜草在多孔混凝土中的植生性能最佳。 Abstract: The super sulfate cement with low alkalinity was selected to prepare the eco-porous concrete, the effects of different content of desulfurization gypsum on the pH value and mechanical properties of eco-porous concrete were studied, and the planting performance of bermudagrass, tall fescue, kentucky bluegrass, ryegrass and bahia grass in eco-porous concrete was analyzed. The results show that the compressive strength of eco-porous concrete is the highest when the content of desulfurized gypsum is 15%~20% and the content of P·O 52.5 cement is 5%. When the water-binder ratio is 0.30, the workability and mechanical properties of eco-porous concrete are optimal. The content of desulfurized gypsum, P·O 52.5 cement and water-binder ratio have little influence on the pH value of eco-porous concrete. The prepared eco-porous concrete has a low pH value and can meet the needs of plant growth. Among them, tall fescue and bahia grass have the best planting performance in eco-porous concrete.

黄劲,秦节发,陈超,等.超硫酸盐水泥植生多孔混凝土性能试验研究[J].混凝土与水泥制品,2020(10):91-95. HUANG J,QIN J F,CHEN C,et al.Experimental Study on the Performance of Super Sulphated Cement Eco-porous Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):91-95.

摘   要：研究了混凝土回弹仪钢砧率定值与其硬度及质量间的关系，确定了一款比较适合中型回弹仪用的轻型钢砧（率定值为40±1）。结果表明：该轻型钢砧可有效提升回弹仪检定周期内常用示值区间段回弹值的重复性、稳定性和准确性，同时，可确保回弹仪的使用过程处于标准状态，进而提高回弹法检测混凝土抗压强度的精度。 Abstract: Based on the study of the relationship between the setting value of steel anvil and its hardness and weight, a light steel anvil with the setting value of 40±1 was determined. The results show that the light steel anvil can effectively improve the repeatability, stability and accuracy of the rebound value of commonly used indication interval in the verification cycle of the rebound instrument. In addition, it can ensure that the use process of the rebound instrument is in a standard state, thereby improving the accuracy of the rebound method for testing the compressive strength of concrete.

魏超琪,王磊,张鹏,等.混凝土回弹仪（2.207J）分段率定计量研究[J].混凝土与水泥制品,2020(10):83-86. WEI C Q,WANG L,ZHANG P,et al.Research on the Section Calibration and Measurement of Concrete Rebound Instrument(2.207J)[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):83-86.

摘   要：针对现有酚酞试剂法无法精确测定混凝土碳化程度的不足，基于热重法定量分析CaCO3含量的试验原理，利用TA-Q500热重分析仪在原材料相同的条件下对不同水灰比及龄期条件下的混凝土碳化深度进行了检测，并阐述了该方法的具体操作步骤。结果表明：与酚酞试剂法相比，热重分析法可以定量分析碳化混凝土中的Ca(OH)2 和CaCO3含量，具有快速、方便的特点，且受环境和人为因素的影响较小，测试结果相对稳定准确。 Abstract: In view of the phenolphthalein method cannot accurately measure the concrete carbonation degree, based on the experimental principle of quantitative analysis of CaCO3 content by thermogravimetric method, the carbonation depth of concrete under different water cement ratio and age conditions was tested by TA-Q500 thermogravimetry analyzer under the same raw materials, and the specific operation steps of the method were described. The results show that compared with the phenolphthalein reagent method, the thermogravimetry method can quantitatively analyze the content of Ca(OH)2 and CaCO3 in carbonated concrete, which has the characteristics of rapidity and convenience, and is less affected by the environment and human factors, and the test results are relatively stable and accurate.  

李蓓,金南国,田野,等.热重分析法在混凝土碳化深度检测中的应用[J].混凝土与水泥制品,2020(10):80-82,86. LI B,JIN N G,TIAN Y,et al.Application of Thermogravimetric Analysis Method in Detecting Carbonation Depth of Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):80-82,86.

摘   要：新旧混凝土叠合面的剪切强度是衡量界面黏结性能的最重要指标。基于Z形黏结试件剪切试验，研究了不同叠合层材料、不同界面处理方式、不同槽口形式下的叠合界面抗剪性能。结果表明，UHPC试件表现出较好的界面抗剪能力，其承载力均高于自密实试件。对于槽口构件，槽口连接形式能提高叠合面抗剪承载力，其中梯形槽口对界面抗剪承载力提升效果更为显著。槽口形式对UHPC材料与C30混凝土界面抗剪能力的影响相较于其对自密实材料与C30混凝土界面抗剪能力的影响更为显著。对于有锚固钢筋的试件，增大锚固钢筋的锚固长度可以提高UHPC材料与C30混凝土界面抗剪能力；对于无锚固钢筋无槽口试件，气泡纸粗糙面处理可以改善UHPC试件的变形能力。 Abstract: The shear strength of old and new concrete combined interface is the most important index to measure the interfacial bonding property. Based on the shear test of z-shaped bonding specimens, the shear resistance of composite interface with different laminated materials, different interface treatment methods and different notches was studied. The results show that the UHPC specimens exhibit good interface shear resistance and their bearing capacity is higher than that of self-compacting specimens. For the notched specimens, the notched joint can improve the shear strength of the composite surface, among which the trapezoidal notched joint has more significant effect on the shear strength of the interface. The influence of notch form on the shear resistance of UHPC material and C30 concrete interface is more significant than that of self-compacting material and C30 concrete interface. For the specimens with anchorage reinforcement, increasing the anchorage length of the anchorage reinforcement can improve the shear resistance of the interface between UHPC material and C30 concrete. For non-anchorage steel bar notched specimens, bubble paper rough surface treatment can improve the deformation capacity of UHPC specimens.

陈甫亮,胥卉,廖桢颖,等.新旧混凝土叠合面抗剪性能研究[J].混凝土与水泥制品,2020(10):75-79. CHEN F L,XU H,LIAO Z Y,et al.Research on the Shear Resistance of Combined Interface of New and Old Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):75-79.