盾构砂对减水剂吸附行为及水泥砂浆流变性能的影响

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发布时间：2020-01-06 00:00:00

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盾构砂对减水剂吸附行为及水泥砂浆流变性能的影响

Influence of shield sand on adsorption of polycarboxylate superplasticizer and rheology of cement mortar

2023年第11期

盾构砂；黏土；聚羧酸减水剂；吸附；流变性能

Shield sand; Clay; Polycarboxylate superplasticizer; Adsorption; Rheology

2023年第11期

10.19761/j.1000-4637.2023.11.001.06

陆加越，叶强*

江苏苏博特新材料股份有限公司，江苏南京 211103

陆加越，叶强*

陆加越,叶强.盾构砂对减水剂吸附行为及水泥砂浆流变性能的影响[J].混凝土与水泥制品,2023(11):1-5,10.

LU J Y,YE Q.Influence of shield sand on adsorption of polycarboxylate superplasticizer and rheology of cement mortar[J].China Concrete and Cement Products,2023(11):1-5,10.

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摘要：依托海太过江通道工程，研究了盾构砂对减水剂吸附行为、水泥砂浆流变性能的影响。结果表明：盾构砂的掺入降低了水泥砂浆的流变性能；与轻度交联的PCE-1相比，盾构砂中粒径≤75 μm的细粉颗粒对常规型聚羧酸减水剂（PCE-0）的吸附作用更强；PCE-1具有较好的黏土耐受性和水泥分散能力，对水泥砂浆流动性的改善效果比PCE-0好；掺盾构砂砂浆体系较好地符合Herschel-Bulkley模型，在相同流动性条件下，盾构砂的掺入使减水剂需求量增加，且随着盾构砂掺量的增加，减水剂用量增大，表观黏度及残余黏度均增大，剪切增稠行为更显著。 Abstract: Based on the Haitai river crossing project， the effect of shield sand on the adsorption behavior of polycarboxylate superplasticizer and the rheological properties of cement mortar was studied. The results show that the incorporation of shield sand reduces the rheological properties of cement mortar. The microfines with particle size≤75 μm in shield sand have a stronger adsorption effect on conventional polycarboxylate superplasticizer(PCE-0) compared with lightly crosslinked PCE-1. The PCE-1 has good clay tolerance and cement dispersibility, and the effect on improving the fluidity of cement mortar is better than that of PCE-0. The shield mortar system conforms to the Herschel-Bulkley model well. Under the same fluidity conditions, shield sand increases the demand for polycarboxylate superplasticizer, and the polycarboxylate superplasticizer content increases with the increase of shield sand content, and the apparent viscosity and the residual viscosity increase, and the shear thickening behavior is more significantly.

英文名 : Influence of shield sand on adsorption of polycarboxylate superplasticizer and rheology of cement mortar

刊期 : 2023年第11期

关键词 : 盾构砂；黏土；聚羧酸减水剂；吸附；流变性能

Key words : Shield sand; Clay; Polycarboxylate superplasticizer; Adsorption; Rheology

刊期 : 2023年第11期

DOI : 10.19761/j.1000-4637.2023.11.001.06

文章编号 :

基金项目 :

作者 : 陆加越，叶强*

单位 : 江苏苏博特新材料股份有限公司，江苏南京 211103

陆加越，叶强*

陆加越,叶强.盾构砂对减水剂吸附行为及水泥砂浆流变性能的影响[J].混凝土与水泥制品,2023(11):1-5,10.

LU J Y,YE Q.Influence of shield sand on adsorption of polycarboxylate superplasticizer and rheology of cement mortar[J].China Concrete and Cement Products,2023(11):1-5,10.

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摘要

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结论

参考文献

引用本文

Abstract: Based on the Haitai river crossing project， the effect of shield sand on the adsorption behavior of polycarboxylate superplasticizer and the rheological properties of cement mortar was studied. The results show that the incorporation of shield sand reduces the rheological properties of cement mortar. The microfines with particle size≤75 μm in shield sand have a stronger adsorption effect on conventional polycarboxylate superplasticizer(PCE-0) compared with lightly crosslinked PCE-1. The PCE-1 has good clay tolerance and cement dispersibility, and the effect on improving the fluidity of cement mortar is better than that of PCE-0. The shield mortar system conforms to the Herschel-Bulkley model well. Under the same fluidity conditions, shield sand increases the demand for polycarboxylate superplasticizer, and the polycarboxylate superplasticizer content increases with the increase of shield sand content, and the apparent viscosity and the residual viscosity increase, and the shear thickening behavior is more significantly.

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[1] 王方刚,陆加越,刘建忠,等.改善聚羧酸超塑化剂与蒙脱土适应性的抗泥剂及其机理研究[J].建筑材料学报,2017,20(4):556-562.
[2] 赵爽,沙建芳,陆加越,等.黏土对聚羧酸减水剂塑化性能的影响[J].混凝土,2013,289(11):116-118.
[3] LEI L,PLANK J.A study on the impact of different clay minerals on the dispersing force of conventional and modified vinyl ether based polycarboxylate superplasticizer[J].Cement and Concrete Research,2014,60:1-10.
[4] 赖广兴,方云辉,张伟松,等.黏土对掺聚羧酸减水剂胶砂和混凝土性能的影响[J].新型建筑材料,2016,43(11):23-26.
[5] DE SCHUTTER G,POPPE A M.Quantification of the waterdemand of sand in mortar[J].Construction and Building Materials,2004,18(7):517-521.
[6] 李北星,吕敦祥,乔敏.花岗岩机制砂细粉对聚羧酸减水剂吸附性能的影响[J].建筑材料学报,2022,25(12):1284-1292.
[7] 水亮亮,杨海静,孙振平,等.聚羧酸系减水剂作用机理的研究进展[J].建筑材料学报,2020,23(1):64-69,76.
[8] ANDERSSON K,ALLARD B,BENGTSSON M,et al.Chemical composition of cement pore solutions[J].Cement and Concrete Research,1989,19(3):327-332.
[9] NG S,PLANK J.Interaction mechanisms between Na montmorillonite clay and MPEG-based polycarboxylate superplasticizers[J].Cement and Concrete Research,2012,42(6):847-854.
[10] SVENSSON P D,HANSEN S.Intercalation of smectite with liquid ethylene glycol -Resolved in time and space by synchrotron X-ray diffraction[J].Applied Clay Science,2010,48(3):358-367.
[11] SUTER,COVENEY.Computer simulation study of the materials properties of intercalated and exfoliated poly(ethylene)glycol clay nanocomposites[J].Soft Matter,2009(5):2239-2251.
[12] LI T,ZHOU Y,ZHU J,et al.Effect of fine aggregate gradation on the rheology of mortar[J].Construction and Building Materials,2022,332:127362.
[13] FLATT R J,LAROSA D,ROUSSEL N.Linking yield stress measurements:Spread test versus viskomat[J].Cement and Concrete Research,2006,36(1):99-109.
[14] XIE X,ZHANG T,YANG Y,et al.Maximum paste coating thickness without voids clogging of pervious concrete and its relationship to the rheological properties of cement paste[J].Construction and Building Materials,2018,168:732-746.

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