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Thursday, 17 October 2019
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Raw materials & technologies, Technologies, Nanotechnology

Novel polymer nano-particles interact with cement

Friday, 8 August 2014

Polymer nano-particles (PNPs) with particle size range of 29.4–52.7nm were synthesised via emulsion polymerisation.

Polymer nano-particles improve the fluidiness of cement

Source: NJ/Fotolia

Polymer nano-particles improve the fluidiness of cement

Source: NJ/Fotolia

The mini-cone tests were conducted to evaluate the dispersion capability of PNPs in fresh cement pastes (fcps). Interactions of PNPs with cement were studied by measurements of total organic carbon, zeta potential, transmission electron microscopy, calorimetry and mercury intrusion porosimetry.

PNPs show retardation effect

The results of the study conducted by Chinese researchers show that the prepared PNPs can be adsorbed on to cement surface and improve fluidity of fcps effectively. The addition of PNPs leads to lesser retardation effect on cement hydration than popularly used polycarboxylate superplasticisers and reduces pore connectivity of micro-pores in hardened cement pastes.

The study is published in: Construction and Building Materials, Volume 68, 15 October 2014, Pages 434-443.

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