成孔剂浓度对水泥基多孔材料孔结构及硬化性能的影响  

Influence of concentration of pore-forming agent on pore structure and hardening properties of cementitious porous material

作　　者：宋理燃 蒋俊 曾浩伦 卢忠远 金超 刘铁 杨奉源 SONG Liran;JIANG Jun;ZENG Haolun;LU Zhongyuan;JIN Chao;LIU Tie;YANG Fengyuan(State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China;Ningbo Construction Engineering Group Co.,Ltd.,Ningbo 315040,China;Sichuan Shudao Construction Science and Technology Co.,Ltd.,Chengdu 610001,China)

机构地区：[1]西南科技大学环境友好能源材料国家重点实验室,四川绵阳621010 [2]宁波建工工程集团有限公司,浙江宁波315040 [3]四川蜀道建筑科技有限公司,四川成都610001

出　　处：《混凝土与水泥制品》2025年第2期13-18,25,共7页China Concrete and Cement Products

基　　金：四川省自然科学基金项目(2022NSFSC1135);宁波市科技计划项目(2022T003);四川省科技计划项目(2023YFG0379)。

摘　　要：采用不同掺量、不同浓度的成孔剂制备了水泥基多孔材料,通过强度测试、压汞试验、XRD、热分析、扫描电镜等方法,研究了成孔剂对水泥基多孔材料孔结构及性能的影响。结果表明:在相同成孔剂掺量下,随着成孔剂浓度的增加,试件的孔隙率减小,孔径范围变窄,累计孔容减小,平均孔径减小,抗压强度增加;当成孔剂掺量为40%时,随着成孔剂浓度的增加,试件的导热系数呈先增加后降低的趋势;当成孔剂掺量为80%时,随着成孔剂浓度的增加,试件的导热系数呈增加趋势;通过提高成孔剂浓度可调控水泥基多孔材料的力学性能和保温隔热性能。Cementitious porous materials were prepared using different dosages and concentrations of pore-forming agent.The effects of pore-forming agent on the pore structure and properties of cementitious porous materials were studied by using the methods of strength testing,mercury intrusion testing,XRD,thermal analysis,scanning electron microscopy.The results show that under the same dosage of pore-forming agent,as the concentration of pore-forming agent increases,the porosity of the specimen decreases,the pore size range narrowes,the cumulative pore volume decreases,the average pore size decreases,and the compressive strength increases.When the dosage of pore-forming agent is 40%,the thermal conductivity of the specimen shows a trend of first increasing and then decreasing with the increase of pore-forming agent concentration.When the dosage of pore-forming agent is 80%,the thermal conductivity of the specimen increases with the increase of pore-forming agent concentration.By increasing the concentration of pore-forming agents,the mechanical properties and thermal insulation performance of cementitious porous materials can be controlled.

关 键 词：纳米孔 孔结构 成孔剂 水泥基多孔材料 力学性能 

分 类 号：TU528.2[建筑科学—建筑技术科学]