Влияние циклов замораживания-оттаивания на прочностные характеристики мелкозернистого бетона дисперсно-армированного базальтовой фиброй
Статья в журнале
Русский
Библиогр.: с. 61 (12 назв.)
691.322.7(051.2)
38.33я5
фибра; базальтовое волокно; мелкозернистый бетон; фибробетон; композит; предел прочности при изгибе и сжатии; морозостойкость; fiber; basalt fiber; fine concrete; composite; tensile strength in bending and compression; frost resistance
Горное дело
С. 56-62
Горный информационно-аналитический бюллетень <br>Mining informational and analitical bulletin
Москва, Издательство "Горная книга"
0236-1493 (print)
Журнал включен в перечень ВАК, входит в систему РИНЦ
РИНЦ 2018: 0,215
The article presents some research findings on the effect of basalt fiber 6 mm in length with a diameter of 23 μm on strength of fine-grained concrete (cement-and-sand matrix) under bending, compression and alternating thermal forces. It is found that the maximum increase in the bending strength of concrete by 31-36% is reached at the fiber content of 4-6% of dry mixture weight (cement+sand). There is no considerable increment in the compressive strength; moreover, at the fiber content of 6%, the compressive strength decreases by 16% as compared with the initial (non-reinforced) specimens. Exposure to 5 accelerated freezing-thawing cycles (freezing temperature 50±5°С, State Standard GOST 10060.2-95) resulted in the reduction in the bending strength of non-reinforced specimens by 73% as against the untreated specimens whereas the strength of the specimens with the fiber content of 2 and 4% lowered by 40 and 35%, respectively. In the compression testing, 5 freezing-thawing cycles decreased the strength of the check non-reinforced specimens by 47% while the decrease in the strength of the reinforced specimens with the fiber content of 2% made 5% as against the check specimens, which corresponded to the freeze resistance grade F200 in compliance with GOST 10060.2-95. The obtained results prove that disperse reinforcement of fine-grained concrete with basalt fiber can increase freezing resistance of concrete and its resilience under bending and compression, which expands application field of concrete.
Влияние циклов замораживания-оттаивания на прочностные характеристики мелкозернистого бетона дисперсно-армированного базальтовой фиброй / К. Н. Алексеев, А. С. Курилко. – Текст : непосредственный // Горный информационно-аналитический бюллетень. – 2018. – N 11. – C. 56-62.
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