摘   要：研究了废玻璃粉（WGP）和碱激发剂NaOH掺量对胶砂抗压和抗折强度的影响，并分析了微观结构。结果表明：与纯水泥胶砂试件相比，当体系中未掺NaOH时，WGP的掺入降低了胶砂的抗压和抗折强度；在体系中掺入适量NaOH可有效提高掺WGP胶砂的120 d抗压和抗折强度；各组胶砂试件中均包含方解石、AFt、氢氧化钙（CH）、C-S-H等物相，其中，掺WGP胶砂试件中还包含C-A-S-H；N0组试件中的裂缝数量较少、尺寸较大，N1组、N3组试件呈多缝开裂特征，且裂缝尺寸相对较小；较低NaOH掺量胶砂试件中的C-（A）-S-H呈细长纤维状，较高NaOH掺量胶砂试件中的C-（A）-S-H呈多细孔珊瑚状；在适宜的NaOH掺量下，WGP活性被激发，参与了体系的水化反应。 Abstract: The effects of the contents of waste glass powder(WGP) and alkaline activator(NaOH) on the compressive and flexural strengths of mortar were investigated and the microstructure was analyzed. The results show that, compared with the pure cement mortar specimens, when NaOH is not blended in the system, the incorporation of WGP reduces the compressive and flexural strengths of the mortar. The incorporation of appropriate content of NaOH can effectively improve the 120 d compressive and flexural strengths of the mortar with WGP. All mortar specimens contain calcite, AFt, calcium hydroxide(CH), C-S-H, of which, the mortar specimens with WGP also contain C-A-S-H. The number of cracks in the specimens of N0 group is relatively small and the size of the cracks is large, while the specimens of N1 and N3 group are characterized by multi-cracks, and the size of the cracks is relatively small. The C-(A)-S-H in the mortar specimens with low NaOH content is in the form of elongated fibers, and the C-(A)-S-H in the mortar specimens with high NaOH content is in the form of coral with multiple fine pores. The activity of WGP is stimulated when NaOH content is appropriate, and participates in the hydration reaction of the system.

赵毅,鲍一捷,郭泳,等.碱激发废玻璃粉对水泥胶砂力学性能及微观结构的影响[J].混凝土与水泥制品,2025(1):86-90. ZHAO Y,BAO Y J,GUO Y,et al.Effect of alkali-activated waste glass powder on mechanical performance and microstructure of cement mortar[J].China Concrete and Cement Products,2025(1):86-90.

摘   要：研究了硅灰掺量（0、6%、16%、26%、36%、46%）对多孔混凝土抗压强度、孔隙率、孔隙溶液pH值和植生性能的影响，并进行了微观分析。结果表明：随着硅灰掺量的增加，多孔混凝土的28 d、56 d抗压强度基本呈先增大后降低再增大的趋势，孔隙率、孔隙溶液pH值均呈降低趋势；适量硅灰的掺入提高了15 d、30 d植株高度和叶片含水率；适量硅灰能提高体系的水化程度和基体密实度，过量硅灰反而会降低基体的密实度。 Abstract：The effects of content of silica fume(0, 6%, 16%, 26%, 36%, 46%) on the compressive strength, porosity, the pH value of the pore solution and planting performance of porous concrete were investigated, and microscopic analysis was carried out. The results show that, with the increase of the content of silica fume, the 28 d and 56 d compressive strengths of porous concrete basically show the trend of first increasing then decreasing and further increasing, the porosity and the pH value of the pore solution of porous concrete all show the trend of decreasing. Appropriate content of silica fume increases the height of plants and the water content of leaves at 15 d and 30 d. Appropriate content of silica fume can improve the hydration degree of the system and matrix compactness, while excessive silica fume may decrease the compactness of the matrix.

梁锦程,喻林,陈建国.硅灰掺量对多孔混凝土强度和植生性能的影响[J].混凝土与水泥制品,2025(1):91-95. LIANG J C,YU L,CHEN J G.Effect of content of silica fume on strength and planting performance of porous concrete[J].China Concrete and Cement Products,2025(1):91-95.

摘   要：研究了普通矿粉和超细矿粉的掺量（0、10%、20%、30%、40%、50%）对高性能混凝土（HPC）坍落度、扩展度、抗压强度、抗折强度、抗冻性能、抗氯离子渗透性能、早期抗裂性能的影响。结果表明：随着普通矿粉掺量的增加，HPC的坍落度先增后降再增，扩展度基本增大；随着超细矿粉掺量的增加，HPC的坍落度先降后增再降，扩展度先增后降；掺超细矿粉HPC的工作性基本低于掺普通矿粉HPC的工作性；普通矿粉、超细矿粉的掺入均提高了HPC试件的28 d抗压强度，且随着掺量的增加，HPC试件的28 d抗压强度基本呈先增后降的趋势；在20%、30%掺量下，普通矿粉和超细矿粉的掺入均提高了HPC试件的28 d抗折强度、抗冻性能、抗氯离子渗透性能和早期抗裂性能；总体而言，适量超细矿粉对HPC性能的改善效果优于普通矿粉。 Abstract: The effects of the content(0, 10%, 20%, 30%, 40%, 50%) of ordinary mineral powder and ultrafine mineral powder on the slump, slump-flow, compressive strength, flexural strength, frost resistance, chloride ion penetration resistance, and early cracking resistance of high performance concrete(HPC) were investigated. The results show that, with the increase of the content of ordinary mineral powder, the slump of HPC first increases, then decreases, and further increases， the slump-flow basically increases. With the increase of the content of ultrafine mineral powder, the slump of HPC first increases, then decreases, and further increases, the slump-flow first increases and then decreases. The workability of HPC with ultrafine mineral powder is basically lower than that of HPC with ordinary mineral powder. The incorporation of ordinary mineral powder and ultrafine mineral powder both improve the 28 d compressive strength of HPC specimens, and with the increase of the content, the 28 d compressive strength of HPC specimens basically shows the trend of first increasing and then decreasing. When the content is 20% or 30%, the incorporation of ordinary mineral powder and ultrafine mineral powder both improve the 28 d flexural strength, frost resistance, chlorine ion penetration resistance and early cracking resistance of HPC specimens. In general, the improvement effect of appropriate content of ultrafine mineral powder on the performance of HPC is better than that of ordinary mineral powder.

刘杰,王连坤,林文皓,等.再生骨料与废弃橡胶对自密实混凝土性能的影响[J].混凝土与水泥制品,2025(1):100-105. LIU J, WANG Liankun,LIN Wenhao,et al.Effect of recycled aggregate and waste rubber particle on performance of self-compacting concrete[J].China Concrete and Cement Products,2025(1):100-105.

摘   要：研究了水泥-粉煤灰混合浆液的水胶比（0.5~1.0）、浸泡时间（2.0~4.0 h）对再生骨料性能的影响，优选出了最佳的包浆处理方式，在此基础上制备了自密实混凝土（SCC），研究了未包浆再生骨料和包浆再生骨料的掺量（0、30%、50%、100%）、废弃橡胶颗粒掺量（0、5%、10%）对SCC工作性、力学性能和抗氯离子渗透性能的影响。结果表明：当混合浆液的水胶比为0.7、浸泡时间为3.5 h时，包浆再生骨料的综合性能最优；未包浆再生骨料、包浆再生骨料的掺入基本降低了SCC的工作性、28 d抗压强度、轴心抗压强度、劈裂抗拉强度、抗氯离子渗透性能，其中，包浆再生骨料对SCC性能的不利影响相对较小；废弃橡胶颗粒的掺入降低了SCC的工作性、28 d抗压强度、轴心抗压强度、劈裂抗拉强度，但提高了抗氯离子渗透性能；建立的强度指标换算公式精度较高。 Abstract: The effects of water-binder ratio(0.5~1.0) of cement-fly ash mixed slurry and soaking time(2.0~4.0 h) on the properties of recycled aggregate were investigated, and the best wrapped slurry treatment was preferred. Based on this, self-compacting concrete(SCC) was prepared, and the effects of contents(0, 30%, 50%, 100%) of unwrapped slurry recycled aggregate and wrapped slurry recycled aggregate, and content(0, 5%, 10%) of waste rubber particles on the workability, mechanical properties and chloride ion penetration resistance of SCC were investigated. The results show that, when the water-binder ratio of the mixed slurry is 0.7 and the soaking time is 3.5 h, the comprehensive performance of the wrapped slurry recycled aggregate is optimal. The incorporation of unwrapped slurry recycled aggregate and wrapped slurry recycled aggregate basically reduces the workability, 28 d compressive strength, axial compressive strength, splitting tensile strength, and chlorine ion penetration resistance of SCC, among which, the adverse effect of wrapped slurry recycled aggregate on the performance of SCC is relatively small. The incorporation of waste rubber particles reduces the workability, 28 d compressive strength, axial compressive strength, and splitting tensile strength of SCC, but improves the chlorine ion penetration resistance. The established conversion formulas for strength indexes are of high accuracy.

刘杰,王连坤,林文皓,等.再生骨料与废弃橡胶对自密实混凝土性能的影响[J].混凝土与水泥制品,2025(1):100-105. LIU J, WANG Liankun,LIN Wenhao,et al.Effect of recycled aggregate and waste rubber particle on performance of self-compacting concrete[J].China Concrete and Cement Products,2025(1):100-105.

摘   要：为了解决机制砂生产过程中的废弃石粉（WSP）资源化再利用难题，采用WSP制备了预应力孔道压浆料，研究了单掺WSP、复掺WSP与粉煤灰或微珠对预应力孔道压浆料流动度、抗压强度及抗折强度的影响。结果表明：单掺WSP或复掺WSP与粉煤灰时，预应力孔道压浆料的流动度和抗折强度不符合规范要求；复掺适量WSP与微珠时，预应力孔道压浆料的工作性和力学性能均符合规范要求，其中，当WSP掺量为32%、微珠掺量为45 g时，所制备的预应力孔道压浆料的性能和经济性相对最优，预应力混凝土桥梁工程可优先考虑此方案。 Abstract: In order to solve the problem of resource reuse of waste stone powder(WSP) in the production process of manufactured sand, prestressed duct grouting material was prepared by using WSP. The effects of single addition of WSP, compound addition of WSP and fly ash or microbeads on the flowability, compressive strength, and flexural strength of prestressed duct grouting material were studied. The results show that when the WSP is added alone or in combination with fly ash, the flowability and flexural strength of the prestressed duct grouting material do not meet the requirements of the specifications. When adding appropriate content of WSP and microbeads, the workability and mechanical properties of the prestressed duct grouting material meet the requirements of the specifications. Among them, when the content of WSP and microbeads is 32% and 45 g, respectively, the performance and economy of the prestressed duct grouting material are relatively optimal, and this plan can be given priority consideration in prestressed concrete bridge engineering.

李威,叶智远,明阳,等.废弃石粉基预应力孔道压浆料的制备及性能研究[J].混凝土与水泥制品,2025(1):106-110,115. LI W,YE Z Y,MING Y,et al.Preparation and performance study of prestressed duct grouting material based on waste stone powder[J].China Concrete and Cement Products,2025(1):106-110,115.

摘   要：以不饱和聚酯树脂（UPR）和大理石尾矿为主要原材料制备了树脂混凝土，研究了UPR掺量（7.7%、9.1%、9.6%、10.0%）和m尾矿粉∶m尾矿砂（0∶1.0、0.3∶1.0、0.6∶1.0、0.8∶1.0、1.0∶1.0）对树脂混凝土性能的影响，并进行了微观机理分析。结果表明：随着UPR掺量的降低，试样的压缩强度和弯曲强度均降低；在UPR掺量为7.7%的情况下，随着尾矿粉掺量的增加（即尾矿砂掺量降低），试样的压缩强度和弯曲强度均先增大后减小，最佳m尾矿粉∶m尾矿砂为0.6∶1.0；合理调整m尾矿粉∶m尾矿砂可有效提高树脂混凝土的在固化过程中的热传导速率，改善微观结构，且不会对固化产物的化学结构和结晶性能造成影响，环境和经济效益显著。 Abstract: Resin concrete was prepared by using unsaturated polyester resin(UPR) and marble tailings as the main raw materials. The effects of the content of UPR (7.7%、9.1%、9.6%、10.0%) and mtailings powder∶mtailings sand (0∶1.0, 0.3∶1.0, 0.6∶1.0, 0.8∶1.0, 1.0∶1.0) on the properties of resin concrete were studied, and the micro mechanism analysis was conducted. The results show that with the decrease of the content of UPR, the compressive strength and bending strength of the sample decrease. Under the condition of the UPR content of 7.7%, as the content of tailings powder increases(i.e. the content of tailings sand decreases), the compressive strength and bending strength of the sample first increase and then decrease, and the optimal mtailings powder∶mtailings sand is 0.6:1.0. Reasonable adjustment of the mtailings powder∶mtailings sand can effectively improve the thermal conductivity rate of resin concrete during the curing process, improve the microstructure, and will not affect the chemical structure and crystallization properties of the cured products, resulting in significant environmental and economic benefits.

王昀山,伍小萍,黄惠佳,等.掺大理石尾矿不饱和聚酯树脂混凝土的性能研究[J].混凝土与水泥制品,2025(1):111-115. WANG Y S,WU X P,HUANG H J,et al.Study on performance of unsaturated polyester resin concrete with marble tailings[J].China Concrete and Cement Products,2025(1):111-115.