多孔浮石在超高性能混凝土中的内养护机理_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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多孔浮石在超高性能混凝土中的内养护机理

Internal curing mechanism of porous pumice in ultra-high performance concrete

2025年第3期

多孔浮石；超高性能混凝土；吸水-释水；内养护；收缩

Porous pumice; Ultra-high performance concrete; Water absorption-desorption; Internal curing; Shrinkage

2025年第3期

10.19761/j.1000-4637.2025.03.028.06

辽宁省交通科技项目（202222）。

张潇1，2

1.辽宁省交通规划设计院有限责任公司，辽宁沈阳 110000；2.公路桥梁诊治技术交通运输行业研发中心，辽宁沈阳 110000

张潇1，2

张潇.多孔浮石在超高性能混凝土中的内养护机理[J].混凝土与水泥制品,2025(3):28-33.

ZHANG X.Internal curing mechanism of porous pumice in ultra-high performance concrete[J].China Concrete and Cement Products,2025(3):28-33.

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摘要：通过1H低场核磁共振技术，研究了多孔浮石掺量及预处理方法对其吸水-释水过程的影响，分析了浮石在超高性能混凝土（UHPC）中的内养护机理。结果表明：浮石掺量对其吸水-释水过程的影响主要体现在水分迁移的特征参数（吸水量、放水量、吸水速率、放水速率）上，且会间接影响UHPC的水化进程；浮石不同预处理方法对UHPC内部孔隙大小、分布的影响主要集中在水化早期，对水化后期基本无影响，且此现象随浮石掺量的增加而更明显；与未预湿浮石相比，预湿浮石可以延迟水分的释放时间，有利于减缓UHPC内部相对湿度的下降，从而降低UHPC的自收缩，为UHPC提供更好的内养护效果。 Abstract: The influence of porous pumice dosage and pretreatment methods on its water absorption-desorption process was studied using 1H low field nuclear magnetic resonance technology, and the internal curing mechanism of pumice in ultra-high performance concrete(UHPC) was analyzed. The results indicate that the influence of pumice dosage on its water absorption-desorption process is mainly reflected in the characteristic parameters of water migration(water absorption, water release, water absorption rate, water release rate), and indirectly affects the hydration process of UHPC. The influence of different pretreatment methods for pumice on the size and distribution of internal pores in UHPC is mainly concentrated in the early stage of hydration, and has little effect on the later stage of hydration. This phenomenon becomes more pronounced with the increase of pumice dosage. Compared with no pre-wetted pumice, pre-wetted pumice can delay the release time of moisture, which is beneficial for slowing down the decrease in relative humidity inside UHPC, thereby reducing the self-shrinkage of UHPC and providing better internal curing effect for UHPC.

英文名 : Internal curing mechanism of porous pumice in ultra-high performance concrete

刊期 : 2025年第3期

关键词 : 多孔浮石；超高性能混凝土；吸水-释水；内养护；收缩

Key words : Porous pumice; Ultra-high performance concrete; Water absorption-desorption; Internal curing; Shrinkage

刊期 : 2025年第3期

DOI : 10.19761/j.1000-4637.2025.03.028.06

文章编号 :

基金项目 : 辽宁省交通科技项目（202222）。

作者 : 张潇1，2

单位 : 1.辽宁省交通规划设计院有限责任公司，辽宁沈阳 110000；2.公路桥梁诊治技术交通运输行业研发中心，辽宁沈阳 110000

张潇1，2

张潇.多孔浮石在超高性能混凝土中的内养护机理[J].混凝土与水泥制品,2025(3):28-33.

ZHANG X.Internal curing mechanism of porous pumice in ultra-high performance concrete[J].China Concrete and Cement Products,2025(3):28-33.

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摘要

参数

结论

参考文献

引用本文

Abstract: The influence of porous pumice dosage and pretreatment methods on its water absorption-desorption process was studied using 1H low field nuclear magnetic resonance technology, and the internal curing mechanism of pumice in ultra-high performance concrete(UHPC) was analyzed. The results indicate that the influence of pumice dosage on its water absorption-desorption process is mainly reflected in the characteristic parameters of water migration(water absorption, water release, water absorption rate, water release rate), and indirectly affects the hydration process of UHPC. The influence of different pretreatment methods for pumice on the size and distribution of internal pores in UHPC is mainly concentrated in the early stage of hydration, and has little effect on the later stage of hydration. This phenomenon becomes more pronounced with the increase of pumice dosage. Compared with no pre-wetted pumice, pre-wetted pumice can delay the release time of moisture, which is beneficial for slowing down the decrease in relative humidity inside UHPC, thereby reducing the self-shrinkage of UHPC and providing better internal curing effect for UHPC.

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[1] 陈宝春,季韬,黄卿维,等.超高性能混凝土研究综述[J].建筑科学与工程学报,2014,31(3):1-24.
[2] SHI C,WU Z,XIAO J,et al.A review on ultra high performance concrete: PartⅠ. Raw materials and mixture design[J].Construction and Building Materials,2015,101:741-751.
[3] 冯乃谦.高性能与超高性能混凝土技术[M].北京:中国建筑工业出版社,2015.
[4] 邵旭东,邱明红,晏班夫,等.超高性能混凝土在国内外桥梁工程中的研究与应用进展[J].材料导报,2017,31(23):33-43.
[5] MA X,LIU J,SHI C,et al.A review on the use of LWA as an internal curing agent of high performance cement-based materials[J].Construction and Building Materials,2019,218:385-393.
[6] YU R,SPIESZ P,BROUWERS H J H.Development of an eco-friendly ultra-high performance concrete (UHPC) with efficient cement and mineral admixtures uses[J].Cement and Concrete Composites,2015,55:383-394.
[7] MATEUSZ W,SCRIVENER K,LURA P.Basic creep of cement paste at early age-the role of cement hydration[J].Cement and Concrete Research,2019,116:176525.
[8] 尚刚,孟令其.钢纤维对高性能混凝土抗压强度及抗渗性能的影响[J].混凝土与水泥制品,2018(10):55-57.
[9] 郭秋生,陈庆,蒋正武,等.纤维对深部隧道用高性能混凝土渗透性能的影响[J].混凝土与水泥制品,2019(12):48-51.
[10] KIRTHIGA R,ELAVENIL S.A review on using inorganic binders in fiber reinforced polymer at different conditions to strengthen reinforced concrete beams[J].Construction and Building Materials,2022,352:129054.
[11] CHRISTOF S,ERK K A,SIRIWATWECHAKUL W,et al.Recent progress in superabsorbent polymers for concrete[J].Cement and Concrete Research,2022,151:262965.
[12] 李景浩,何小波,胡少伟,等.现代混凝土自收缩及其调控研究进展[J].水利水运工程学报,2023(2):150-161.
[13] TING T Z H,RAHMAN M E,LAU H H,et al.Recent development and perspective of lightweight aggregates based self-compacting concrete[J].Construction and Building Materials,2019,201:547687.
[14] 王萧萧,景卫泽,尹立强,等.基于CT技术的天然浮石混凝土孔隙结构试验研究[J].混凝土,2022(4):24-27.
[15] 康寅,王培.天然浮石混凝土耐久性能研究进展[J].混凝土,2022(8):74-77.
[16] 蒋余想,周建新,周新军,等.聚丙烯的开发应用综述[J].煤炭与化工,2022,45(9):121-127.
[17] NIKOLAUS N,GALVOSAS P,KARGER J.Liquid-phase self-diffusion in hydrating cement pastes-results from NMR studies and perspectives for further research[J].Cement and Concrete Research,2006,37(3):278727.
[18] FRIEDEMANN K,SCHONFELDER W,STALLMACH F,et al.NMR relaxometry during internal curing of portland cements by lightweight aggregates[J].Materials and Structures,2008,41(10):245628.
[19] ZHOU C,LI K,PANG X.Geometry of crack network and its impact on transport properties of concrete[J].Cement and Concrete Research,2012,42(9):128468.
[20] TAN Y,CHEN H,HE R.Water distribution and transport-kinetiCS model in fresh cement-based mixtures containing superabsorbent polymers based on 1H low-field NMR[J].Cement and Concrete Composites,2022,127:486724.
[21] 刘曰武,高大鹏,李奇,等.页岩气开采中的若干力学前沿问题[J].力学进展,2019,49(00):1-236.
[22] 陶高梁,彭寅杰,陈银,等.基于NMR的非饱和土相对渗透系数快速预测新方法[J].岩土工程学报,2024,46(3):470-479.

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