Thermal and water storage characteristics of super-absorbent polymer gel which absorbed aqueous solution of calcium chloride

Jin, Zhao; Asako, Yutaka; Yamaguchi, Yoshiyuki; Yoshida, Hiroyuki

doi:10.1016/s0017-9310(99)00372-5

Cited by 12 publications

(1 citation statement)

References 4 publications

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“…The weight loss of the product up to approximately 250 °C (7%: point A−A‘) is due to the evaporation of the free and gypsum hydration water, as evidenced by the endothermic response of the SDTA curve from room temperature to 250 °C. The product weight loss from 250 to 650 °C (6.5%: point B−B‘) is due to the evaporation of other crystalline and adsorbed water and the water decomposition of hydroxides, according to the literature related to other similar mortars. , In consequence, the total water content of the material (surface samples of the test material) determined by TG from room temperature to 650 °C amounts for 13.5% and the mass fraction of the free and the gypsum water is evaluated as 52% (7/13.5) of the water total content. Thus, most of the water content of the plates tested was in the form of free water and was chemically bound to the gypsum, which yielded positive effects in the insulating properties of the plates, due to the two hydration molecules of calcium sulfate.…”

Section: Resultsmentioning

confidence: 99%

Fire Resistance Characteristics of Plates Containing a High Biomass−Ash Proportion

Vilches

Leiva

Vale

et al. 2007

Ind. Eng. Chem. Res.

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Ashes produced by the combustion of two types of biomass wastesone generated during the extraction of olive oil (olive pomace) and the other during rice-huskingswere used, without any prior treatment, to make insulating plates with fire-resistant properties by means of simple molding and curing methods. The plates, with a weight composition of 69% olive-pomace ash, 1% rice-husk ash, 29% gypsum, and 1% glass fiber, present a great capacity for water retention and, consequently, when subjected to different thermal tests, showed excellent insulating properties. Furthermore, they also demonstrated acceptable mechanical properties with regard to compressive and bending strengths and resistance to impact, as well as a minimal environmental impact. The plates developed with a high biomass-ash ratio could potentially be useful as components of construction materials used for passive fire protection, such as doors and firewalls in buildings and industrial installations.

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Section: Resultsmentioning

confidence: 99%