多元固废基复合胶凝材料的硬化特征与抗蚀性能研究  

Study on hardening characteristics and corrosion resistance of multifunctional solid waste-based composite cementitious materials

作　　者：陈平[1,2,3] 夏海洋 胡成 向玮衡[1,2,4] 梁志锋 CHEN Ping;XIA Haiyang;HU Cheng;XIANG Weiheng;LIANG Zhifeng(Guangxi Key Laboratory of Green Building Materials and Construction Industrialization,Guilin University of Technology,Guangxi 541004,China;College of Civil and Architectural Engineering,Guilin University of Technology,Guangxi 541004,China;Guangxi Engineering and Technology Center for Utilization of Industrial Waste Residue in Building Materials,Guilin University of Technology,Guangxi 541004,China;Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources,Guilin University of Technology,Guangxi 541004,China)

机构地区：[1]桂林理工大学广西绿色建材与建筑工业化重点实验室,广西桂林541004 [2]桂林理工大学土木与建筑工程学院,广西桂林541004 [3]桂林理工大学广西工业废渣建材资源利用工程技术研究中心,广西桂林541004 [4]桂林理工大学有色金属矿产勘查与资源高效利用省部共建协同创新中心,广西桂林541004

出　　处：《混凝土》2025年第3期24-28,共5页Concrete

基　　金：广西重点研发计划(桂科AB22035064);广西青年人才专项(桂科);国家自然科学基金(52062009);广西绿色建材与建筑工业化重点实验室开发基金(桂科能22-J-21-19);广西青年人才专项(桂科AD21220052)。

摘　　要：为了制备出优异的海工抗侵蚀水泥基材料,研究了矿粉对多元固废基复合胶凝材料水化特性和抗蚀性能的影响.试验结果表明:矿粉的掺入可以提高复合胶凝材料的力学强度和抗蚀性能.其中,掺入矿粉30%的复合胶砂的28 d抗折强度为6.6 MPa,抗折强度为45.1 MPa,72 h累计放热量比未掺入矿渣的基准组减少了11.3%,30 d和90 d电通量分别为2147 C和948 C,抗氯离子渗透性能比基准组分别提高了52%和68%,通过3%Na2SO4和5%NaCl浸泡砂浆试块30 d抗折侵蚀系数均为1.23.矿粉的掺入会消耗材料中的Ca(OH)2,生成C-S-H凝胶,使得复合胶凝材料更加致密,有效提高复合胶凝材料的后期抗压强度、抗氯离子渗透性和抗侵蚀性能。In order to prepare excellent marine erosion-resistant cementitious materials.The effect of mineral powder on the hydration characteristics and corrosion resistance of multifunctional solid waste-based composite cementitious materials was investigated.The experimental results showed that 30%of its 28 d flexural strength by mixing with mineral powder was 6.6 MPa,and the flexural strength was 45.1 MPa.72 h cumulative exothermic energy was reduced by 11.3%compared with that of the benchmark group.Its 30 d and 90 d electric flux was 2147 C and 948 C respectively,and the anti-chlorine ion permeability performance was 52%and 68%higher than the benchmark group respectively,and the 30d flexural erosion coefficient of the mortar specimen soaked in 3%Na2SO4 and 5%NaCl was 1.23.The admixture of the mineral powder consumed the Ca(OH)2 in the material to generate the C-S-H gel,which made the composite cementitious material more dense and effectively improved the composite cementitious material,and the composite cementitious material was more compact.It will made the composite cementitious material more dense and effectively improved the late compressive strength,anti-chlorine ion permeability and anti-erosion performance of the composite cementitious material.

关 键 词：矿粉 工作性能 水化热 抗侵蚀系数 电通量 

分 类 号：TU528.01[建筑科学—建筑技术科学]