多孔玄武岩粗骨料HPC的制备和收缩性能研究

摘要/Abstract

摘要： 为解决多孔玄武岩粗骨料吸水率大、早期吸水快给高性能混凝土(HPC)制备带来的黏度大、拌合难、耐久性差等问题,引入附加用水量预湿骨料,研究了不同附加用水量对多孔玄武岩混凝土工作性能、力学性能、收缩性能、孔结构和微观形貌的影响,并与普通碎石混凝土性能作对比。结果表明:当附加用水量取4%或6%(以多孔玄武岩粗骨料的质量分数计)时,可制得C60抗压强度等级、工作性优良和低收缩的HPC。与普通碎石混凝土相比,预吸水的多孔玄武岩能显著降低HPC的自收缩,而对抗压强度影响不大;自收缩率随附加用水量的增加而降低,其变化发展分为快速增长、短暂膨胀、缓慢增长、趋于稳定四个阶段;含水玄武岩有内养护作用,在水化后期可细化孔结构,提高界面过渡区的密实性,减少HPC的开裂风险。

关键词: 多孔玄武岩, HPC, 收缩性能, 孔结构, 界面过渡区

Abstract: In order to solve the problems of high viscosity, difficult mixing and poor durability of high performance concrete (HPC) caused by large water absorption rate and fast early water absorption of porous basalt coarse aggregate, additional water consumption was introduced to prepare pre-wetted aggregate before preparation. The effects of different additional water consumption on workability, mechanical performance, shrinkage performance, pore structure and microstructure of porous basalt concrete were studied. And the performance of porous basalt concrete was compared with that of ordinary crushed stone concrete. The results show that when the additional water consumption is 4% or 6%(calculated by mass fraction of porous basalt coarse aggregate), the HPC with C60 compressive strength grade, excellent workability and low shrinkage can be obtained. Compared with ordinary gravel concrete, pre-absorbed porous basalt can significantly reduce the autogenous shrinkage of HPC, and has little effect on compressive strength. The self-shrinkage rate decreases with the increase of additional water consumption, and its development is divided into four stages of rapid growth, short-term expansion, slow growth and stabilization. The water-bearing basalt has internal curing effect, which can refine the pore structure in the later stage of hydration, improve the compactness of the interfacial transition zone and reduce the cracking risk of HPC.

Key words: porous basalt, HPC, shrinkage performance, pore structure, interface transition zone

中图分类号:

TU528

孙婧, 洪俊哲, 王珅, 常璞, 贾小静, 刘宏波. 多孔玄武岩粗骨料HPC的制备和收缩性能研究[J]. 硅酸盐通报, 2024, 43(1): 84-91.

SUN Jing, HONG Junzhe, WANG Shen, CHANG Pu, JIA Xiaojing, LIU Hongbo. Preparation and Shrinkage Performance of Porous Basalt Coarse Aggregate HPC[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(1): 84-91.

参考文献

[1] 秦涛, 韩方玉, 光鉴淼, 等. 铁路桥梁用高性能混凝土的力学性能试验研究[J]. 混凝土, 2021(3): 134-136.
QIN T, HAN F Y, GUANG J M, et al. Experimental study on mechanical properties of high performance concrete for railway bridges[J]. Concrete, 2021(3): 134-136 (in Chinese).
[2] 毛伟琦, 胡雄伟. 中国大跨度桥梁最新进展与展望[J]. 桥梁建设, 2020, 50(1): 13-19.
MAO W Q, HU X W. Latest developments and prospects for long-span bridges in China[J]. Bridge Construction, 2020, 50(1): 13-19 (in Chinese).
[3] 安明喆, 苏阳, 王月, 等. 粗骨料石粉含量对C50高性能混凝土性能的影响研究[J]. 中国铁道科学, 2013, 34(4): 27-32.
AN M Z, SU Y, WANG Y, et al. Effect of the stone powder content in coarse aggregate on the properties of C50 high performance concrete[J]. China Railway Science, 2013, 34(4): 27-32 (in Chinese).
[4] LIU J M, OU Z W, MO J C, et al. Effectiveness of saturated coral aggregate and shrinkage reducing admixture on the autogenous shrinkage of ultrahigh performance concrete[J]. Advances in Materials Science and Engineering, 2017, 2017: 1-11.
[5] FRANESQUI M A, YEPES J, GARCíA-GONZÁLEZ C. Improvement of moisture damage resistance and permanent deformation performance of asphalt mixtures with marginal porous volcanic aggregates using crumb rubber modified bitumen[J]. Construction and Building Materials, 2019, 201: 328-339.
[6] 孙美娟, 姚丕强, 黄雄, 等. 沸石对海水拌合超高性能混凝土性能的影响[J]. 硅酸盐通报, 2022, 41(5): 1649-1655.
SUN M J, YAO P Q, HUANG X, et al. Effect of zeolite on properties of seawater mixing ultra-high performance concrete (UHPC)[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(5): 1649-1655 (in Chinese).
[7] 刘玮, 张玉, 李珠, 等. 膨胀珍珠岩内养护混凝土抗压强度增长机制及数学模型的建立[J]. 复合材料学报, 2022, 39(11): 5423-5435.
LIU W, ZHANG Y, LI Z, et al. Growth mechanism and mathematical model of compressive strength of expanded perlite internal curing concrete[J]. Acta Materiae Compositae Sinica, 2022, 39(11): 5423-5435 (in Chinese).
[8] 尹天一, 王志宇, 余睿, 等. 多孔陶粒对超高性能混凝土的性能影响[J]. 混凝土, 2022(9): 137-140+148.
YIN T Y, WANG Z Y, YU R, et al. Effect of porous ceramsite on properties of ultra-high performance concrete[J]. Concrete, 2022(9): 137-140+148 (in Chinese).
[9] 赵海军, 魏爱华, 张家祥, 等. 基于氮气吸附法和压汞法的玄武岩孔隙结构特征及其对储层渗透性的影响[J]. 第四纪研究, 2023, 43(2): 560-572.
ZHAO H J, WEI A H, ZHANG J X, et al. Microscopic pore structure characteristics of basalt and its influence on reservoir permeability based on nitrogen adsorption and mercury injection[J]. Quaternary Sciences, 2023, 43(2): 560-572 (in Chinese).
[10] 霍泳霖, 霍冀川, 张行泉, 等. 玄武岩的开发利用进展[J]. 材料导报, 2022, 36(6): 113-123.
HUO Y L, HUO J C, ZHANG X Q, et al. Development and utilization of basalt[J]. Materials Reports, 2022, 36(6): 113-123 (in Chinese).
[11] 范倩, 马健萍, 何伟杰. 多孔吸水玄武岩对沥青混合料水稳定性能影响机理研究[J]. 公路, 2020, 65(1): 212-216.
FAN Q, MA J P, HE W J. Study on influence mechanism of porous water-absorbing basalt on water stability of asphalt mixture[J]. Highway, 2020, 65(1): 212-216 (in Chinese).
[12] 张璐. 玄武岩弃渣固废利用的技术应用[J]. 公路, 2020, 65(12): 197-198.
ZHANG L. Technical application of solid waste utilization of basalt waste slag[J]. Highway, 2020, 65(12): 197-198 (in Chinese).
[13] 杨医博, 岳晓东, 姚丁语, 等. 碱渣内养护剂对高强高性能混凝土自收缩及早期抗裂性能的影响及机理分析[J]. 材料导报, 2022, 36(12): 91-96.
YANG Y B, YUE X D, YAO D Y, et al. Effect of soda residue internal curing agent on autogenous shrinkage and early crack resistance of high-strength and high-performance concrete and its mechanism analysis[J]. Materials Reports, 2022, 36(12): 91-96 (in Chinese).
[14] 中华人民共和国住房和城乡建设部. 普通混凝土拌合物性能试验方法标准: GB/T 50080—2016[S]. 北京: 中国建筑工业出版社, 2017.
Ministry of Housing and Urban-Rural Development, People’s Republic of China. Performance test method standard of ordinary concrete mixture: GB/T 50080—2016[S]. Beijing: China Architecture and Construction Press, 2017 (in Chinese).
[15] 中华人民共和国住房和城乡建设部, 国家市场监督管理总局. 混凝土物理力学性能试验方法标准: GB/T 50081—2019[S]. 北京: 中国建筑工业出版社, 2019.
Ministry of Housing and Urban-Rural Development, State Administration for Market Regulation, PRC. Test method standard for physical and mechanical properties of concrete: GB/T 50081—2019[S]. Beijing: China Architecture and Construction Press, 2019 (in Chinese).
[16] 中华人民共和国住房和城乡建设部. 普通混凝土长期性能和耐久性能试验方法标准: GB/T 50082—2009[S]. 北京: 中国建筑工业出版社, 2009.
Ministry of Housing and Urban-Rural Development, People’s Republic of China. Standard of test method for long-term performance and durability of ordinary concrete: GB/T 50082—2009[S]. Beijing: China Architecture and Construction Press, 2009 (in Chinese).
[17] XU F M, LIN X S, ZHOU A N, et al. Effects of recycled ceramic aggregates on internal curing of high performance concrete[J]. Construction and Building Materials, 2022, 322: 126484.
[18] 孔祥明, 张珍林. 高吸水性树脂对高强混凝土自收缩的减缩机理[J]. 硅酸盐学报, 2014, 42(2): 150-155.
KONG X M, ZHANG Z L. Shrinkage-reducing mechanism of super-absorbent polymer in high-strength concrete[J]. Journal of the Chinese Ceramic Society, 2014, 42(2): 150-155 (in Chinese).
[19] 崔溦, 冀天竹, 吴甲一. 热膨胀系数对早期混凝土性态影响试验及数值模拟[J]. 同济大学学报(自然科学版), 2016, 44(3): 355-361+401.
CUI W, JI T Z, WU J Y. Experimental study and numerical simulation for the effect of thermal expansion coefficient on the behavior of early concrete[J]. Journal of Tongji University (Natural Science), 2016, 44(3): 355-361+401 (in Chinese).
[20] WU L M, FARZADNIA N, SHI C J, et al. Autogenous shrinkage of high performance concrete: a review[J]. Construction and Building Materials, 2017, 149: 62-75.
[21] 劳家荣, 黄忠财, 郭寅川, 等. SAP内养生路面混凝土收缩性能及力学性能研究[J]. 硅酸盐通报, 2021, 40(2): 676-682.
LAO J R, HUANG Z C, GUO Y C, et al. Shrinkage and mechanical properties of internal curing pavement concrete with SAP[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(2): 676-682 (in Chinese).
[22] 王瑶, 徐亦冬, 曾鞠庆, 等. 氧化石墨烯对水泥基复合材料自收缩的影响[J]. 功能材料, 2020, 51(3): 3108-3113.
WANG Y, XU Y D, ZENG J Q, et al. Influence of graphene oxide on autogenous shrinkage of cement-based composites[J]. Journal of Functional Materials, 2020, 51(3): 3108-3113 (in Chinese).
[23] MEHTA P K. Concrete: microstructure, properties, and materials[M]. New York: Mc Graw-Hill Education, 2016: 24-26.