Effect of borax on early hydration and rheological properties of reactivated cementitious material

被引：4

作者：

Zhang, Linglei ^{[1
,2
,3
]}

Ji, Yongsheng ^{[3
]}

Huang, Guodong ^{[3
]}

Gao, Furong ^{[3
]}

Dong, Zuochao ^{[4
]}

机构：

[1] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Jiangsu, Peoples R China

[2] China Univ Min & Technol, Jiangsu Key Lab Environm Impact & Struct Safety E, Xuzhou, Jiangsu, Peoples R China

[3] China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou, Jiangsu, Peoples R China

[4] Jiangsu Univ Sci & Technol, Sch Architecture & Civil Engn, Zhenjiang, Jiangsu, Peoples R China

来源：

ADVANCES IN CEMENT RESEARCH | 2019年 / 31卷 / 05期

关键词：

composite materials; viscosity; yield stress; RECYCLED AGGREGATE; FLY-ASH; PASTE; DEHYDRATION; CONCRETE; BEHAVIOR; WASTE;

D O I：

10.1680/jadcr.18.00051

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The influence of borax on the early hydration and rheological properties of dehydrated cement paste (DCP) composite reactivated cementitious materials (DCRCM) is investigated through analysis of the hydration kinetics and measurement of rheological parameters. Results show that the presence of borax can effectively restrain the early hydration rate of DCRCM, and this leads to reductions in both the hydration products and the flocculent structure in the paste. Obvious shear thinning occurs in the fresh DCRCM paste with the increase of shear rate, followed by gradually stabilised viscosity. As the amount of borax is increased, the yield stress and plastic viscosity of DCRCM paste decrease and the rheological properties are significantly improved. However, when the amount of borax is 4%, the rheological type of DCRCM paste changes to shear thickening at a high shear rate, which is unfavourable in terms of the improvement of rheological properties.

引用

页码：235 / 242

页数：8

共 35 条

[1] Dehydration and rehydration processes of cement paste exposed to high temperature environments
Alonso, C
Fernandez, L
[J]. JOURNAL OF MATERIALS SCIENCE, 2004, 39 (09) : 3015 - 3024
[2] Optimization of normal and high strength recycled aggregate concrete mixtures by using packing model
Amario, Mayara
Rangel, Caroline Santana
Pepe, Marco
Toledo Filho, Romildo Dias
[J]. CEMENT & CONCRETE COMPOSITES, 2017, 84 : 83 - 92
[3] Recycled aggregate from C&D waste & its use in concrete - A breakthrough towards sustainability in construction sector: A review
Behera, Monalisa
Bhattacharyya, S. K.
Minocha, A. K.
Deoliya, R.
Maiti, S.
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2014, 68 : 501 - 516
[4] An investigation of rheological properties of cement-based grout mixed with rice husk ash (RHA)
Celik, Fatih
Canakci, Hanifi
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2015, 91 : 187 - 194
[5] Dispersion forces in cement suspensions
Flatt, RJ
[J]. CEMENT AND CONCRETE RESEARCH, 2004, 34 (03) : 399 - 408
[6] The early hydration of Ordinary Portland Cement (OPC): An approach comparing measured heat flow with calculated heat flow from QXRD
Jansen, D.
Goetz-Neunhoeffer, F.
Lothenbach, B.
Neubauer, J.
[J]. CEMENT AND CONCRETE RESEARCH, 2012, 42 (01) : 134 - 138
[7] Study on the rheological properties of Portland cement pastes with polycarboxylate superplasticizers
Kong, Xiangming
Zhang, Yanrong
Hou, Shanshan
[J]. RHEOLOGICA ACTA, 2013, 52 (07) : 707 - 718
[8] Lewis JA, 2000, J AM CERAM SOC, V83, P1905
[9] Investigation of the rheological properties of cement paste with different superplasticisers based on colour function and RDS methods
Li, Ben
Mao, Jize
Lei, Huo
Liu, Zongmin
Toyoharu, Nawa
[J]. ADVANCES IN CEMENT RESEARCH, 2016, 28 (06) : 357 - 370
[10] Lu Linnu, 2008, Journal of the Chinese Ceramic Society, V36, P1343

← 1 2 3 4 →