Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of geometric parameters of fibers on water absorption of blocks
Conclusion A comparison was made of the water absorption of two fiber-reinforced concrete blocks with different geometric parameters of the fibers. It was found that in the case of using thin fibers d=0.5 mm (block No. 2), the water absorption by weight was less and it was distributed more uniformly over the entire length than in the case of using fibers with d=1.5 mm (block No. 1). A dependence of the coefficient of variation on $ W_{w} $ was established (a decrease of $ W_{w} $ causes a decrease of $ C_{v} $ and vice versa). This was displayed especially clearly in block No. 1 (thick fibers) and less so in block No. 2. Furthermore, it was found that the addition of thin fibers directly into the concrete mixer (into the mixed concrete) leads to their clumping and ultimately to the occurrence of “hedgehogs” in the concrete and to worsening of $ W_{w} $. Clumping of fibers occurs little, if at all, when thick fibers are added to the concrete mixer. Precisely the addition of fibers to the concrete mix is one of the most complex problems in the given area of construction.
Effect of geometric parameters of fibers on water absorption of blocks
Conclusion A comparison was made of the water absorption of two fiber-reinforced concrete blocks with different geometric parameters of the fibers. It was found that in the case of using thin fibers d=0.5 mm (block No. 2), the water absorption by weight was less and it was distributed more uniformly over the entire length than in the case of using fibers with d=1.5 mm (block No. 1). A dependence of the coefficient of variation on $ W_{w} $ was established (a decrease of $ W_{w} $ causes a decrease of $ C_{v} $ and vice versa). This was displayed especially clearly in block No. 1 (thick fibers) and less so in block No. 2. Furthermore, it was found that the addition of thin fibers directly into the concrete mixer (into the mixed concrete) leads to their clumping and ultimately to the occurrence of “hedgehogs” in the concrete and to worsening of $ W_{w} $. Clumping of fibers occurs little, if at all, when thick fibers are added to the concrete mixer. Precisely the addition of fibers to the concrete mix is one of the most complex problems in the given area of construction.
Effect of geometric parameters of fibers on water absorption of blocks
Kagan, M. Z. (Autor:in) / Belonozhko, V. M. (Autor:in)
1991
Aufsatz (Zeitschrift)
Englisch
BKL:
56.30
Wasserbau
Lokalklassifikation TIB:
770/6550/8000
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