Internal curing of HPC with hydrogel

Construmat 2018

Pytlik, D.^1 ; Bilek, V.^1 ; Bambuchova, M.^1

Faculty of Civil Engineering, VSB - Technical University of Ostrava, L. Podeste 1875/17, Ostrava - Poruba, Czech Republic^1

关键词: Cement content;    Cement hydration;    Cement matrix;    High water;    Internal curing;    Properties of concretes;    Water storage;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012043/pdf
DOI  :  10.1088/1757-899X/385/1/012043

来源: IOP

【 摘 要 】

High performance concrete (HPC) is concrete with a very high cement content and very low cement/water ratio and this leads to better properties of concrete. These concretes have a problem with traditional methods of curing because of very dense cement matrix. Water from outside cannot reach the interior of the concrete to achieve hydration and it may not have enough curing water for cement hydration. In this paper is discussed effect of internal curing of HPC. The objective of internal curing is to create water storage inside concrete. This should be achieved with hydrogel which was selected to examine influence on internal curing. Hydrogel has a high water-absorption capacity about 300% so it should create a sufficient supply of water in internal reservoir. The prediction is that the hydrogel will release water after the concrete get hardened and provide water to another cement hydration. This should lead to the concretes with better properties.