Influence of Monocylic Aromatic High Range Waterreducer on Hydration and Microstructure of Cement Pastes

ZHAO Hui; DENG Ming; WU Xiaoming; GAO Bo

doi:10.11835/j.issn.1674-4764.2009.03.024

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Influence of Monocylic Aromatic High Range Waterreducer on Hydration and Microstructure of Cement Pastes

更新时间：2023-11-28

- Influence of Monocylic Aromatic High Range Waterreducer on Hydration and Microstructure of Cement Pastes
- Journal of Civil and Environmental Engineering Vol. 31, Issue 3, Pages: 130-135(2009)
- 作者机构：
  
  1. 南京工业大学材料科学与工程学院,南京,210004
  2. 江苏交通科学研究院,南京,211112
- 作者简介：
- 基金信息：
- DOI：10.11835/j.issn.1674-4764.2009.03.024
  CLC：
- Published：2009
- 稿件说明：
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ZHAO Hui, DENG Ming, WU Xiaoming, et al. Influence of Monocylic Aromatic High Range Waterreducer on Hydration and Microstructure of Cement Pastes[J]. Journal of Civil and Environmental Engineering, 2009, 31(3): 130-135.
DOI：

ZHAO Hui, DENG Ming, WU Xiaoming, et al. Influence of Monocylic Aromatic High Range Waterreducer on Hydration and Microstructure of Cement Pastes[J]. Journal of Civil and Environmental Engineering, 2009, 31(3): 130-135. DOI： 10.11835/j.issn.1674-4764.2009.03.024.

摘要

从水化热、水化产物、水泥浆体孔隙结构、微观结构变化4个方面，研究了单环芳烃型高效减水剂对水泥水化反应的影响。使用TAM Ai进行水化热测定表明，掺加单环芳烃型高效减水剂可延缓水泥初期水化和明显降低水化热，MRI分析表明同龄期的掺单环芳烃型高效减水剂水泥浆体与空白样相比孔隙总体积与总孔隙率都有增加的趋势，水泥浆体孔径分布变化不大。XRD、TGDTA、SEM分析表明掺加单环芳烃型高效减水剂抑制水泥水化过程中水化产物Ca(OH)2和水化硅酸钙产生，不影响水化产物与水化过程最终结果，掺加单环芳烃型高效减水剂使氢氧化钙、钙矾石与CSH等水泥水化产物细化。

Abstract

The influences of the monocyclic aromatic high range water reducers on cement hydration were evaluated from four factors

such as hydration heat

hydration products

pore structure

microstructures of cement pastes. With measurement of hydration heat by the TAM Ai

it was found that monocyclic aromatic high range water reducer may delay early hydration and significantly decreased early hydration heat. And the monocyclic aromatic high range water reducers tended to increase porosity and pore volume of cement pastes with MRI analysis

while pore size distribution did not change remarkably. With analysis of XRD、TGDTA and SEM

it was shown that the monocyclic aromatic high range water reducers could restrain the production of Ca(OH)2 and Hydrated Calcium Silicates in the hydration process without affecting the end products

and refine the hydration products

such as Ca(OH)2

CSH gel and ettringite crystals.

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