porous concrete and construction process for shore protection works

摘要

The present invention relates to a porous concrete and construction method used for river and shore protection slopes.; And 300 to pooh trend cement of 400kg / m ³ per 1m ^3, and of 100 ~ 200kg / m ³ of water and, 1200 - 2100kg / m ³ Aggregate, one or consists of admixture of 40kg / m ^3, wherein the aggregate is to the maximum dimension is used for only the aggregate particle size of 25 ~ 13mm by 25mm which, in passing coarse aggregate weight percentage of 13mm body is not more than 1 to 20% by weight, the percent by weight pass through a 5mm sieve of 100% and a 1.2mm sieve the passage weight percentage between 1 and fine aggregate of 5mm or less that 15% by weight, or the sand is mixed at 5 to 20% by weight of the total goljaeryang, and only a particle size aggregate of 20 ~ 13mm maximum dimension of aggregate is to 20mm is 5mm which is the coarse aggregate weight percentage passing through the sieve is less than 13mm does not exceed 1 to 20% by weight, the percent by weight pass through a 5mm sieve is 100% by weight passing a percentage of 1 to 15% by weight of a 1.2mm sieve of the following fine aggregate, sand or full goljaeryang hayeoseo is mixed at 5 to 20% by weight.