ポリマー含浸コンクリートの力学的特性における重合放射線のエネルギー依存性

概要

論文の詳細を見る
The purpose of this paper is to study the characteristics of polymerization on polymer impregnated concrete (PIC) polymerized by various radiation source which have the peculiar energy respectively as follows; Gamma-rays : ^<60>Co-1.25MeV, ^<137>Cs-0.66MeV, X-Ray : 0.88MeV and accelerated electron beam 4.0, 2.0 and 1.2MeV. This experimental program was carried out to investigate the effect of radiation energy, dencity of cement mortar, optimum irradiating conditions and other factors which have influence upon the polymerization and strength of PIC. The test results shows that the energy dependency on the accelerated electran was remarkable effect for relative absorption energy and strength of specimens (Fig. 5) and it can be estimate that the impregnation depth from the surface of specimens in ordinary mortar MMA-PIC were about 10mm, 6mm, and 3mm as to 4.0, 2.0 and 1.2MeV respectively under curing 50 Mrads (Fig. 2). It is also show that the optimum total exposure dose on magnetic electro wave methods, estimate about 3MR at ^<60>Co; 1×10^6R/hr, 2MR at ^<137>Cs; 4.5×10^4R/hr and 2MR at X-ray; 5×10^5R/hr at curing temperature 20℃ (Fig. 9, Fig. 10). We can see the fact that the energy dependency is noticiable only comparing same kinds of radiation source.
社団法人日本建築学会の論文
1978-10-30