可再分散乳胶粉改性水泥基薄喷材料研究

摘要/Abstract

摘要： 聚合物改性水泥基韧性薄喷材料是煤矿巷道表面封闭材料的发展方向,可再分散乳胶粉具有增加水泥基材料黏结性、改善韧性的特点,但目前关于可再分散乳胶粉改性水泥基薄喷材料的研究较少。本文采用可再分散乳胶粉改性硅酸盐与硫铝酸盐复合水泥制备薄喷材料,研究了可再分散乳胶粉对浆液黏度、凝结时间以及结石体抗折和抗压强度、单轴压缩应力-应变、单轴拉伸荷载-位移的影响。结果表明,随可再分散乳胶粉掺量增加,浆液黏度快速增加的起始时间延长,凝结时间增加,结石体抗折、抗压强度均先升高后降低,在掺量为2.25%(质量分数)时达到最大值,压缩、拉伸破坏变形率均增加,韧性得到改善。通过微观分析阐释了可再分散乳胶粉对水泥基材料宏观性能的影响机理。

关键词: 可再分散乳胶粉, 薄喷材料, 硅酸盐水泥, 硫铝酸盐水泥, 改性

Abstract: Polymer modified cement-based toughness thin spray material is the development direction of coal mine roadway surface sealing material. Redispersible emulsion powder has the characteristics of increasing cement-based material adhesion and improving toughness, but at present, there is less research on redispersible emulsion powder modified cement-based thin spray material. In this paper, thin spray material was prepared by usingsilicate and sulphate aluminium composite cement modified by redispersible emulsion powder, and the effect of redispersible emulsion powder on slurry viscosity, setting time, and flexural and compressive strength, uniaxial compressive stress-strain and uniaxial tensile load-displacement of the stone body was studied. The results show that with the increase of the content of redispersible emulsion powder,onset time for rapid increase of slurry viscosity is extended, setting time increases, the flexural and compressive strength of the stone body increase first and then decrease, and reach the maximum value at the content of 2.25% (mass fraction), and the compression and tensile deformation rates increase and the toughness is improved. The mechanism of the effect of redispersible emulsion powder on the macroscopic properties of cement-based materials was explained by microscopic analysis.

Key words: redispersible emulsion powder, thin spray material, silicate cement, sulphate aluminium cement, modification

中图分类号:

TU528

乔巧, 柴虎成, 张笑天, 张海波. 可再分散乳胶粉改性水泥基薄喷材料研究[J]. 硅酸盐通报, 2022, 41(10): 3394-3402.

QIAO Qiao, CHAI Hucheng, ZHANG Xiaotian, ZHANG Haibo. Modification of Cement-Based Thin Spray Material by Redispersible Emulsion Powder[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(10): 3394-3402.

参考文献

[1] 侯斌,刘永立.锚喷支护的特点及应用[J].煤炭技术,2008,27(6):54-55.
HOU B, LIU Y L. Characteristic and application of anchor and spray support[J]. Coal Technology, 2008, 27(6): 54-55 (in Chinese).
[2] 康红普,王金华,林健.煤矿巷道锚杆支护应用实例分析[J].岩石力学与工程学报,2010,29(4):649-664.
KANG H P, WANG J H, LIN J. Case studies of rock bolting in coal mine roadways[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(4): 649-664 (in Chinese).
[3] 易恭猷,李明远.锚喷支护巷道取消喷射混凝土层的研究[J].煤炭学报,2002,27(2):139-143.
YI G Y, LI M Y. Study on replacing bolting and shotcreting by bolt-net-grout support[J]. Journal of China Coal Society, 2002, 27(2): 139-143 (in Chinese).
[4] 刘凤文.巷道薄喷封闭技术研究及试验[J].煤炭与化工,2016,39(1):64-66+91.
LIU F W. Research and testing of roadway closed thin spray technology[J]. Coal and Chemical Industry, 2016, 39(1): 64-66+91 (in Chinese).
[5] 冯利军.纤维增韧地聚合物支护结构承载特性及工程应用研究[D].徐州:中国矿业大学,2020.
FENG L J. Study on load-bearing characteristics and engineering application of fiber reinforced geopolymer support structure[D]. Xuzhou: China University of Mining and Technology, 2020 (in Chinese).
[6] TANNANT D D. Thin spray-on liners for underground rock support[C]//Proceedings of the 17th International Mining Congress and Exhibition of Turkey-IMCET. 2001: 57-73.
[7] 曹允钦,李洪,魏振全,等.新型快速薄喷材料的研制[J].现代矿业,2014,30(2):114-115+118.
CAO Y Q, LI H, WEI Z Q, et al. Development of new rapid thin spray material[J]. Modern Mining, 2014, 30(2): 114-115+118 (in Chinese).
[8] 贾宏俊.煤巷锚网防风化喷涂材料性能的试验[J].煤炭科学技术,2008,36(11):33-35.
JIA H J. Performance test of weather proof coating material for bolt and steel mesh in seam gateway[J]. Coal Science and Technology, 2008, 36(11): 33-35 (in Chinese).
[9] 李学彬,杨春满,滕德强,等.软岩巷道新型柔性喷层材料配比及力学性能试验研究[J].煤炭工程,2018,50(10):138-141.
LI X B, YANG C M, TENG D Q, et al. Experimental study on material ratio and mechanical properties of flexible spraying material in soft rock roadway[J]. Coal Engineering, 2018, 50(10): 138-141 (in Chinese).
[10] 程小伟,姚亚东,尹光福,等.可再分散乳胶粉改性隧道防火涂料的研究(英文)[J].功能材料,2006,37(4):671-674.
CHENG X W, YAO Y D, YIN G F, et al. Polymer-modified fireproof coating for tunnel by redispersible powders[J]. Journal of Functional Materials, 2006, 37(4): 671-674.
[11] SU Z, BIJEN J M J M, LARBI J A. The influence of polymer modification on the adhesion of cement pastes to aggregates[J]. Cement and Concrete Research, 1991, 21(1): 169-178.
[12] ZURBRIGGEN R,张量.ELOTEX可再分散胶粉对瓷砖粘结砂浆性能的影响[J].新型建筑材料,2003,30(8):24-27.
ZURBRIGGEN R, ZHANG L. Effect of ELOTEX redispersible powder on the performance of tile bonding mortar[J]. New Building Materials, 2003, 30(8): 24-27 (in Chinese).
[13] 彭家惠,毛靖波,张建新,等.可再分散乳胶粉对水泥砂浆的改性作用[J].硅酸盐通报,2011,30(4):915-919.
PENG J H, MAO J B, ZHANG J X, et al. Application of redispersion emulsoid powder in cement mortar[J]. Bulletin of the Chinese Ceramic Society, 2011, 30(4): 915-919 (in Chinese).
[14] 杨元意,程小伟,付强,等.可再分散乳胶粉改性水泥石孔隙结构与氯离子渗透性研究[J].钻井液与完井液,2013,30(5):56-59+99.
YANG Y Y, CHENG X W, FU Q, et al. Research on pore structure and chloride ion permeability of cement stone modified by re-dispersible latex powder[J]. Drilling Fluid & Completion Fluid, 2013, 30(5): 56-59+99 (in Chinese).
[15] 王月明,唐永志,刘开伟,等.纤维和胶粉对水泥砂浆力学和抗裂性能的影响[J].硅酸盐通报,2018,37(9):2775-2781.
WANG Y M, TANG Y Z, LIU K W, et al. Effects of fiber and rubber powder on the mechanical and crack resistance of cement mortars[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(9): 2775-2781 (in Chinese).
[16] 乔渊,李运北,李春亮.可再分散聚合物乳胶粉对水泥砂浆微结构性能作用的研究[J].新型建筑材料,2006,33(7):4-8.
QIAO Y, LI Y B, LI C L. Study on effect of re-dispersible polymer emulsion powder on microstructure of cement mortar[J]. New Building Materials, 2006, 33(7): 4-8 (in Chinese).
[17] 钟世云,马英.聚合物改性自流平水泥砂浆的力学性能[J].建筑材料学报,2005,8(1):77-81.
ZHONG S Y, MA Y. Mechanical properties of polymer-modified self-levelling mortars[J]. Journal of Building Materials, 2005, 8(1): 77-81 (in Chinese).
[18] 邱聪.可再分散乳胶粉的制备及其改性效率研究[J].新型建筑材料,2006,33(3):27-31.
QIU C. Preparation of redispersible latex powder and its modification efficiency[J]. New Building Materials, 2006, 33(3): 27-31 (in Chinese).
[19] SUN W B, ZHOU F, LIU J X, et al. Experimental study on Portland cement/calcium sulfoaluminate binder of paste filling[J]. European Journal of Environmental and Civil Engineering, 2022, 26(5): 1706-1721.
[20] 李伟,王高明,江芸,等.硅酸盐-硫铝酸盐复合水泥体系物理性能及水化机理研究[J].材料导报,2014,28(s2):407-409+442.
LI W, WANG G M, JIANG Y, et al. Research of physical properties and hydration mechanism of silicate-sulphoaluminate cement compound system[J]. Materials Review, 2014, 28(s2): 407-409+442 (in Chinese).
[21] 简险峰,王栋民,黄天勇,等.普通硅酸盐水泥基矿物掺合料对硫铝酸盐水泥性能的影响[J].硅酸盐通报,2014,33(4):984-987.
JIAN X F, WANG D M, HUANG T Y, et al. Effect of silicate cement and mineral admixtures on sulphoaluminate cement[J]. Bulletin of the Chinese Ceramic Society, 2014, 33(4): 984-987 (in Chinese).
[22] THAKER S M, MAHANWAR P A, PATIL V V, et al. Synthesis and spray drying of water-redispersible polymer[J]. Drying Technology, 2010, 28(5): 669-676.
[23] 王培铭,刘恩贵.苯丙共聚乳胶粉水泥砂浆的性能研究[J].建筑材料学报,2009,12(3):253-258+265.
WANG P M, LIU E G. Study on properties of styrene-acrylate copolymer powder modified cement mortar[J]. Journal of Building Materials, 2009, 12(3): 253-258+265 (in Chinese).
[24] LARBI J A, BIJEN J M J M. Interaction of polymers with Portland cement during hydration: a study of the chemistry of the pore solution of polymer-modified cement systems[J]. Cement and Concrete Research, 1990, 20(1): 139-147.
[25] 刘斯凤,万亭亭,王培铭.EVA改性砂浆早龄期收缩应力/应变规律[J].建筑材料学报,2016,19(5):791-796.
LIU S F, WAN T T, WANG P M. Shrinkage stress-strain evolution of mortars modified by EVA polymer at early age[J]. Journal of Building Materials, 2016, 19(5): 791-796 (in Chinese).
[26] SILVA D A, ROMAN H R, GLEIZE P J P. Evidences of chemical interaction between EVA and hydrating Portland cement[J]. Cement and Concrete Research, 2002, 32(9): 1383-1390.