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混凝土在矿物油料作用下,其强度显著降低,这是因为包含在所有矿物油料中的表面活性物质进入混凝土微细缺陷中,引起混凝土强度的吸附性降低,并呈现楔入作用,这也降低混凝土强度。多孔体内部的微细缺陷被表面活性物质浸占越多,则上述作用越显著。从1960年开始研究石油产品对混凝土与钢筋混凝土物理力学性能的影响。曾研究了十种型号矿物油料,包括重油燃料、柴油燃料、煤油及汽油。试验中采用了不同骨料的,各种配比的,不同品种水泥和各种水灰比的普通水泥混凝土。试验重油产品时,混凝土试体放在开口池中;当试验煤油、汽油、柴油时,混凝土试体放于密闭容器中,并保持几年时间。每隔半年
The strength of concrete under the effect of mineral oil significantly reduces, because the surface active substances contained in all mineral oils enter the concrete fine defects, cause the decrease of the adsorption strength of the concrete, and present the wedging effect, which also reduces the concrete strength. . The more the fine defects inside the porous body are impregnated with the surface active material, the more significant the above-mentioned effect is. From 1960 began to study the impact of petroleum products on the physical and mechanical properties of concrete and reinforced concrete. Ten types of mineral oils have been studied, including heavy oil fuels, diesel fuels, kerosene and gasoline. In the experiment, ordinary cement concrete with different aggregates, various ratios, different types of cement and various water-cement ratios was used. When the heavy oil product is tested, the concrete sample is placed in the open pool; when testing kerosene, gasoline, and diesel, the concrete sample is placed in a closed container and kept for several years. Every six months