Abstract
Architectural and decorative concrete with the use of photoluminescent pigment accumulates solar energy, which is converted into light in the dark. The use of products with the glow effect provides an increase in safety in the dark. It is an additional mean of signaling on dangerous and poorly lit sections of roads, parking lots, bike paths. In addition, it allows to characterize this material as functional (the possibility of manufacturing a wide range of products), aesthetically expressive (highly decorative in the daytime), eco-friendly (the possibility of manufacturing with the use of man-made waste). Concrete with the use of photoluminescent pigments should not lose the properties of the glow, while the intensity of the glow should be maintained for a sufficiently long period. The criterion for choosing Portland cement for luminous architectural and decorative concretes is not only the aspect of decorative concrete, but also the effect of luminescence. An experiment is conducted to determine the degree of luminescence of photoluminescent pigment in concrete using white and grey Portland cement. A preliminary analysis of the literature and authors’ own research has shown that in order to enhance the effect of the photoluminescent pigment glow in concrete, the surface of the products must be sanded, which is also advisable for creating highly decorative surfaces of concrete products. The optimally selected materials and the method of surface treatment of the products ensure the decorative effect of architectural concrete even in the daytime.
Highlights
Architectural and decorative concrete with the use of photoluminescent pigment accumulates solar energy, which is converted into light in the dark
The use of products with the glow effect provides an increase in safety in the dark
It is an additional mean of signaling on dangerous and poorly lit sections of roads, parking lots, bike paths. It allows to characterize this material as functional, aesthetically expressive, ecofriendly
Summary
Проведен эксперимент по определению интенсивности свечения фотолюминесцентного пигмента в бетоне с применением белого и серого портландцементов. Введение в состав декоративного бетона фотолюминесцентного пигмента, при сохранении всех требуемых эксплуатационных характеристик, позволит обеспечить дополнительное свойство – свечение для архитектурной выразительности изделий в ночной период времени [10–14]. Что вид портландцемента оказывает существенное влияние на свечение образцов: серый портландцемент приглушает эффект свечения, не позволяя получить интенсивное свечение, в то время как использовании белого портландцемента, при одинаковой дозировке фотолюминесцентного пигмента, позволяет получать образцы с высокой интенсивностью свечения Что на интенсивность свечения фотолюминесцентного пигмента в бетоне влияет и цветовая температура источника освещения. Ный пигмент ЛДП-2мА (40)П в количестве 5 %; Интенсивность свечения фотолюминесцентного пигмента в бетонных образцах в зависимости от времени зарядки и источника освещения. Источник света (мощность светового излучения, лм) Солнечный свет при ясной погоде (>50.000) Солнечный свет при пасмурной погоде (21.000) Сумерки (1.000)
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