| 摘要 |
<p>The invention relates to a concrete composition for the precast/precompressed elements manufacturing. According to the invention, the composition consists of 510 kg of cement, 920 kg of river sand with a particle size of up to 4 mm, 230 kg of coarse river aggregate, 492 kg of coarse river aggregate having the particle size of 8...16 mm, 5.61 kg of super-plastifier of polycarboxylic type and 199 kg of water.</p> |
