Abstract
The effect of borosilicate glass on the thermal neutron shielding performance and the compressive strength of cement mortar was investigated. The borosilicate glass was used as a replacement material for fine aggregate in this study. The cement mortars were mixed by four different replacement ratios of borosilicate glass. The following tests were conducted with the cement mortar: (1) Compressive strength, (2) TG/DSC and (3) neutron shielding rate using 241Am–Be neutron source. Results indicated that the cement mortar with borosilicate glass showed higher compressive strength and higher thermal neutron shielding rate as the replacement ratio of borosilicate glass increased. The increase of the compressive strength and the thermal neutron shielding rate was associated with the pozzolanic reaction of borosilicate glass and the increase of boron content in cement mortar, respectively.
Highlights
Concrete is one of most widely used materials for neutron shielding because in addition to having the proper structural properties, there are a variety of choices for the materials used to build it, leading to the manufacture of concrete with different densities and different combinations [1]
This study investigated the effect of borosilicate glass on the thermal neutron shielding performance and the compressive strength gain of cement mortar
The compressive strength of cement mortar with borosilicate glass increased as the replacement ratio of borosilicate glass increased
Summary
Concrete is one of most widely used materials for neutron shielding because in addition to having the proper structural properties, there are a variety of choices for the materials used to build it, leading to the manufacture of concrete with different densities and different combinations [1]. When the concrete absorbs neutrons, the concrete releases secondary gamma rays that should be considered in shielding design [2]. Boron carbide (B4 C) absorbs neutrons without the radiation of secondary gamma ray and is generally used in the neutron shielding application [3]. This study investigated the effect of borosilicate glass on the thermal neutron shielding performance and the compressive strength gain of cement mortar. The compressive strength, the amount of calcium hydroxide and the thermal neutron shielding rate of cement mortar with borosilicate glass were measured for the investigation
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