Restricted accessResearch articleFirst published online 2025
Investigation on the compression behavior of ancient brick masonry strengthened by modified horizontal mortar joints with composite grouting and natural hemp fiber rope reinforcement
This study fabricated ancient brick column specimens with two different mortar joint spalling depths based on the common material deterioration mode of ancient masonry. Specifically, modified composite sticky rice-lime mortar and natural hemp fiber rope were used as the raw materials, and horizontal mortar joint grouting and fiber rope reinforcement methods were adopted to prepare performance-enhanced ancient brick column specimens with six different strengthening conditions. Through uniaxial compression tests, the compression failure morphology and mechanical properties of the specimens under different strengthening conditions were studied, and the variation patterns of mechanical performance indicators with the strengthening conditions were analyzed. The calculation formula for the compressive strength of performance-enhanced ancient masonry was proposed, and the full stress-strain relationship model under compression and the crack length development model were established. The results show that the non-strengthened brick columns exhibit brittle failure morphology under compression, and the compressive strength and deformation modulus decrease with the increasing mortar joint spalling depth. The crack development process of reinforced brick columns under compression presents ductile characteristics. The compressive strength and crack density increase with an increasing grouting depth and mortar joint grouting-fiber rope reinforcement significantly enhances the elastoplastic deformation capacity of brick columns under compression. Under the 25% grouting depth ratio, the characteristic stress and corresponding deformation modulus of the stress-strain curve increase first and then decrease with the increasing fiber rope reinforcement ratio. The compressive strength and crack density of ancient brick column with the 12.5% grouting depth ratio and 0.25% reinforcement ratio increase by 57.1%, 24.7%, respectively. The established formula and models can clearly describe the evolution of mechanical properties of ancient masonry, offering good engineering applicability.
ZhangQLiBZengQ, et al.Erosion of aerial lime and sticky rice mortars by cyclic wetting–drying and dilute sulfate acid actions. Adv Cement Res2019; 32: 343–357.
3.
WeiGZhangHWangH, et al.An experimental study on application of sticky rice–lime mortar in conservation of the stone tower in the Xiangji Temple. Constr Build Mater2012; 28: 624–632.
4.
LeiHLiTWeiJ. Research on the basic problems in old building protection. Eng Mech2007; S2: 99–109, (in Chinese).
5.
XieQHaoWXuD, et al.Experimental studies on seismic performance of ancient pagodawall strengthened with shape memory alloy wire. J Civ Environ Eng2022; 44: 38–47, (in Chinese).
6.
RenXQiangZDazhuH, et al.Seismic performance study on critically damaged masonry piers retrofitted using shear-compressive metal dampers. Structures2021; 34: 3906–3914.
7.
BrancoMGonçalvesAMGuerreiroL, et al.Cyclic behavior of composite timber-masonry wall in quasi-dynamic conditions reinforced with superelastic damper. Constr Build Mater2014; 52: 166–176.
8.
CapozuccaRRicciV. Bond of GFRP strips on modern and historic brickwork masonry. Compos Struct2016; 140: 540–555.
9.
Di TommasoAFocacciFMicelliF. Strengthening historical masonry with FRP or FRCM: trends in design approach. Key Eng Mater2017; 747: 166–173.
10.
CapozuccaR. Experimental analysis of historic masonry walls reinforced by CFRP under in-plane cyclic loading. Compos Struct2011; 94: 277–289.
11.
AnaniaLD'AgataG. Limit analysis of vaulted structures strengthened by an innovative technology in applying CFRP. Constr Build Mater2017; 145: 336–346.
12.
AngiolilliMGregoriAPathirageM, et al.Fiber reinforced cementitious matrix (FRCM) for strengthening historical stone masonry structures: experiments and computations. Eng Struct2020; 224: 111102.
13.
D'AmbraCLignolaGPProtaA, et al.FRCM strengthening of clay brick walls for out of plane loads. Compos B Eng2019; 174: 107050.
14.
Del ZoppoMDi LudovicoMBalsamoA, et al.Experimental in-plane shear capacity of clay brick masonry panels strengthened with FRCM and FRM composites. J Compos Construct2019; 23: 4019038.
15.
GattescoNAmadioCBedonC. Experimental and numerical study on the shear behavior of stone masonry walls strengthened with GFRP reinforced mortar coating and steel-cord reinforced repointing. Eng Struct2015; 90: 143–157.
16.
GuerreiroJProençaJFerreiraJG, et al.Experimental characterization of in-plane behaviour of old masonry walls strengthened through the addition of CFRP reinforced render. Compos B Eng2018; 148: 14–26.
17.
MeriggiPCaggegiCGaborA, et al.Shear-compression tests on stone masonry walls strengthened with basalt textile reinforced mortar (TRM). Constr Build Mater2022; 316: 125804.
18.
WangXLamCCIuVP. Comparison of different types of TRM composites for strengthening masonry panels. Constr Build Mater2019; 219: 184–194.
19.
WangSWangSYangT, et al.Performance tests and hysteretic model research on ancient brick walls reinforced by grouting. J Harbin Eng Univ2020; 41: 1295–1302, (in Chinese).
20.
SilvaBDalla BenettaMDa PortoF, et al.Compression and sonic tests to assess effectiveness of grout injection on three-leaf stone masonry walls. Int J Architect Herit2014; 8: 408–435.
21.
WangW. Experimental study and finite element study on shear behaviorof old brick masonry based on cracked mortar brick masonry. Master Thesis, Lanzhou Jiaotong University, 2018. (in Chinese).
22.
LiuXGuoZHuY, et al.Study on shear behavjor of stone masonry joints strengthened with polymer mortar. Earthquake Engineering and Engineering Dynamics2010; 30: 106–111, (in Chinese).
23.
VejmelkováEKeppertMKeršnerZ, et al.Mechanical, fracture-mechanical, hydric, thermal, and durability properties of lime–metakaolin plasters for renovation of historical buildings. Constr Build Mater2012; 31: 22–28.
24.
SilvaBAFerreira PintoAPGomesA. Natural hydraulic lime versus cement for blended lime mortars for restoration works. Constr Build Mater2015; 94: 346–360.
25.
ErgençDFortR. Accelerating carbonation in lime-based mortar in high CO2 environments. Constr Build Mater2018; 188: 314–325.
26.
WangSWangSLuZ, et al.Characterization of sticky-rice lime binders from old masonry relics in north Chin the primary contribution for conservation. Constr Build Mater2020; 250: 118887.
27.
YangRZhangZXieM, et al.Microstructural insights into the lime mortars mixed with sticky rice sol–gel or water: a comparative study. Constr Build Mater2016; 125: 974–980.
28.
ZhaoPJacksonMDZhangY, et al.Material characteristics of ancient Chinese lime binder and experimental reproductions with organic admixtures. Constr Build Mater2015; 84: 477–488.
29.
XiaoYFuXGuH, et al.Properties, characterization, and decay of sticky rice–lime mortars from the Wugang Ming dynasty city wall (China). Mater Char2014; 90: 164–172.
30.
LiuZYangRWangW, et al.Multi-analytical approach to the mural painting from an ancient tomb of Ming Dynasty in Jiyuan, China: characterization of materials and techniques. Spectrochim Acta Mol Biomol Spectrosc2022; 279: 121419.
31.
FangSQZhangHZhangBJ, et al.The identification of organic additives in traditional lime mortar. J Cult Herit2014; 15: 144–150.
32.
LuoY-BZhangY-J. Investigation of sticky-rice lime mortar of the Horse Stopped Wall in Jiange. Herit Sci2013; 1: 26.
33.
ZengYZhangBLiangX. A case study and mechanism investigation of typical mortars used on ancient architecture in China. Thermochim Acta2008; 473: 1–6.
34.
YangFZhangBMaQ. Study of sticky rice-lime mortar technology for the restoration of historical masonry construction. Acc Chem Res2010; 43: 936–944.
35.
YangTMaXZhangB, et al.Investigations into the function of sticky rice on the microstructures of hydrated lime putties. Constr Build Mater2016; 102: 105–112.
36.
WangSMengZZhaoQ, et al.Experimental study on the characteristics and resistance against the coupling effect of freeze-thaw and chloride salt erosion of sticky rice-lime composites modified with metakaolin and hemp fibers. Constr Build Mater2024; 416: 135240.
37.
YanQWangSWuZ, et al.Experimental study on the mechanical properties and durability oftraditional glutinous rice-lime slurry enhanced by metakaolin. Concrete2021: 113–116, (in Chinese).
38.
YangHCheYJianH, et al.Newly-designed traditional glutinous rice-lime mortar with micron-nano-particles. China Rural Water and Hydropower2015: 109–111+115, (in Chinese).
39.
YangK. Study on the physical and chemical mechanism of glutinousrice mortar modified by sodium methyl silicate and sisal fiber. Master Thesis, Zhengzhou University, 2021. (in Chinese).
40.
WeiGZhangBFangS. Influence of admixtures on properties of traditional sticky rice-lime mortar and their mechanisms. J Civ Environ Eng2011; 33: 143–149, (in Chinese).
41.
AbdullaKFCunninghamLSGillieM. Out-of-plane strengthening of adobe masonry using hemp fibre ropes: an experimental investigation. Eng Struct2021; 245: 112931.
42.
ChenGWangJLiuL, et al.Axial compressive behavior of block masonry reinforced with plants. J Guangxi Univ (Nat Sci Ed)2015; 40: 838–847, (in Chinese).
43.
ChenGWangJLiuL, et al.Experimental study on the shear performance of cotton straw cement-based block material. CHINA SCIENCEPAPER2016; 11: 105–109, (in Chinese).
44.
EslamiAZahediAMirabi BanadakiH. In-plane seismic behavior of NSM strengthened adobe walls: experimental evaluation of different reinforcements. Eng Struct2021; 246: 113016.
45.
EslamiABanadakiHMRonaghH. Sand-coated reeds as an innovative reinforcement for improving the in-plane seismic behavior of adobe walls. Constr Build Mater2022; 326: 126882.
46.
YanLKasalBHuangL. A review of recent research on the use of cellulosic fibres, their fibre fabric reinforced cementitious, geo-polymer and polymer composites in civil engineering. Compos B Eng2016; 92: 94–132.
47.
GB/T2542-2012, Test methods for wall bricks, 2012. (in Chinese).
48.
GB/T 50129-2011, Standard for test method of basic mechanics properties of masonry, 2011. (in Chinese).
49.
GB 50003-2011, Code for design of masonry structures, 2011. (in Chinese).
50.
WeiZPanYQiuH, et al.Experimental study on compressive behavior of masonry walls strengthenedwith pointing mortar. J Harbin Inst Technol2017; 49: 184–188, (in Chinese).
51.
TurnesecVCacovicF. Some experimental results on the strength of brick masonry walls. Proc 2nd int brick masonry conf, stoke on Trent 19711971; 149–156.
52.
WangBWangFWangQ. Damage constitutive models of concrete under the coupling action of freeze–thaw cycles and load based on Lemaitre assumption. Constr Build Mater2018; 173: 332–341.
53.
HuangYHeXSunH, et al.Effects of coral, recycled and natural coarse aggregates on the mechanical properties of concrete. Constr Build Mater2018; 192: 330–347.
54.
TangYLuX. Crack evolvement of ancient brick masonry under uniaxial compression. J Hunan Univ2019; 46: 45–53, (in Chinese).
55.
UranjekMBokan-BosiljkovV. Influence of freeze–thaw cycles on mechanical properties of historical brick masonry. Constr Build Mater2015; 84: 416–428.
56.
ZhaoFHeXQiaoJ. Experimental study on axial compression performance of autoclaved fly ash brick masonry. J Inn Mongolia Univ Tech (Nat Sci Ed)2011; 30: 63–68, (in Chinese).
57.
XuC. Experimental and theoretical research on the mechanics behavior of autoclaverd fly ash brick masonry. PhD dissertation, Dalian University of Technology, 2011. (in Chinese).
58.
YangZYangZTianS. Experimental study on clay brick columns strengthened with carbon fiber sheets. J Wuhan Univ Sci Technol (Nat Sci Ed)2009; 32: 209–212, (in Chinese).
59.
MiccoliLMüllerUFontanaP. Mechanical behaviour of earthen materials: a comparison between earth block masonry, rammed earth and cob. Constr Build Mater2014; 61: 327–339.
60.
DoraSHumbertoVAníbalC, et al.Mechanical properties and behavior of traditional adobe wall panels of the aveiro district. J Mater Civ Eng2015; 27: 4014253.
61.
XiaQSunYLiY, et al.Development law of axial compression and cracks in ancient brick masonry. Constr Build Mater2021; 299: 123936.
62.
LourençoPBPina-HenriquesJ. Validation of analytical and continuum numerical methods for estimating the compressive strength of masonry. Comput Struct2006; 84: 1977–1989.
63.
TapanSChenGWitolP. Artificial intelligence-driven energy optimization in smart homes using interval-valued fermatean fuzzy Aczel-Alsina aggregation operators. J Build Eng2025; 105: 112418.
64.
TapanSWitolPChenG. Enhancing healthcare supply chain management through artificial intelligence-driven group decision-making with Sugeno–Weber triangular norms in a dual hesitant q-rung orthopair fuzzy context. Eng Appl Artif Intell2024; 135: 108794.
