|Table of Contents|

Effect of PCE-Nc on Printable Time of 3DPC(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2022年01期
Page:
17-21
Research Field:
·物理学·
Publishing date:

Info

Title:
Effect of PCE-Nc on Printable Time of 3DPC
Author(s):
Gong Chunyan; Jiang Yaqing; Wang Yu; Pan Tinghong
(School of Mechanics and Materials,Hohai University,Nanjing 211100,China)
Keywords:
cement-base material; structuring rate; rheological properties; resistivity; static yield stress; polycarboxylate superplasticizer
PACS:
TU528
DOI:
10.3969/j.issn.1001-4616.2022.01.004
Abstract:
In order to improve the printability state of 3D printed cement-base materials(3DPC)by studiyng the relevant parameters of rheological properties,a time-varying rate model of static yield stress is established,and the maximum operable time point(maximum operating time,MOT)of three-dimensional printing(3DP)is obtained. Combined with the dynamic process of cement hydration,the start time of cement hydration induction period is obtained through non-contact resistivity test,and the relationship between induction period and Mott is fitted. The test results show that Mott appears at a certain time before the beginning of induction period. With the increase of the content of nano clay(Nc),the induction period of cement-based materials mixed with polycarboxylate superplasticizer is advanced,and the 3DP operable time is shortened. The study provides a theoretical basis for prolonging the printable time of 3DPC.

References:

[1] 刘鑫,张立业,邵志伟. 浇筑工艺对泡沫混凝土冻融循环后性能的影响[J]. 南京工业大学学报(自然科学版),2021,43(1):87-93.
[2]王广华,冯迪,唐文. 3D打印软体机器人及其传感器[J]. 南京师范大学学报(工程技术版),2020,20(3):57-64.
[3]俞星辰,肖亚平,韩维. 铁催化过氧化氢氧化端炔合成羧酸类化合物[J]. 南京师大学报(自然科学版),2020,162(2):35-39.
[4]黄鹤,蒋亚清,潘亭宏. 大流动度水泥净浆流变模型研究[J]. 南京师大学报(自然科学版),2021,44(3):20-23.
[5]谢礼兰,邓敏. 率值对含磷硅酸盐水泥熟料矿物组成和微观结构的影响[J]. 南京工业大学学报(自然科学版),2021,43(4):473-479.
[6]PAN T H,JIANG Y Q,HE H,et al. Effect of structural build-up on interlayer bond strength of 3d printed cement mortars[J]. Materials,2021,14(2):236-243.
[7]JING X Y,ZHANG Y,LIU H Q,et al. Effect of aluminum sulfate on the hydration of tricalcium aluminate[J]. IOP conference series:earth and environmental science,2021,719(2):022079-022086.
[8]FLATT R J,BOWEN P. Yodel:a yield stress model for suspensions[J]. Journal of the American Ceramic Society,2010,89(4):1244-1256.
[9]SPINELLI G,LAMBERTI P,TUCCI V,et al. Rheological and electrical behaviour of nanocarbon/poly(lactic)acid for 3D printing applications[J]. Composites part B,2019,167:467-476.
[10]KHAVAT A F,OMRAN S,NAJI P,et al. Field-oriented test methods to uate structural build-up at rest of flowable mortar and concrete[J]. Materials and structures,2012,45(10):1547-1564.
[11]PANDA B,TAN M J. Rheological behavior of high volume fly ash mixtures containing micro silica for digital construction application[J]. Material letters,2019,237:348-351.
[12]QIAN Y,G. GEERT D S. Enhancing thixotropy of fresh cement pastes with nanoclay in presence of polycarboxylate ether superplasticizer(PCE)[J]. Cement and concrete research,2018,111:15-22.
[13]李顺,余其俊,韦江雄.聚羧酸减水剂的分子结构对水泥水化过程的影响[J]. 硅酸盐学报,2012,40(4):613-619.

Memo

Memo:
-
Last Update: 1900-01-01