再生骨料植生混凝土室外植生试验性能优化研究

Outdoor Vegetation Test Study of Performance Optimization of Recycled Aggregate Planting Concrete

再生骨料植生混凝土除了要满足基本的抗压强度和连通孔隙率的要求,还需要有适宜的植生碱环境以及适合草种生长的植生基质。通过优化混凝土碱性植生环境以及选择适宜草种生长的植生基质,对再生骨料植生混凝土的植生效果进行优化研究,得到结论如下:室内植生混凝土的草种基本都能生根发芽,特别是多年生黑麦草比狗牙根前后期生长速度都快;草种混播要比单一播种效果更好,并且降碱后其根系均比较发达;不含混凝土植物的生长状态稍好于含混凝土降碱后植物的生长状态;以草坪外观质量评分标准为准,多年生黑麦草、高羊茅、护坡王等种类在60 d后无论是从颜色还是均匀性及密度来说都是比较好的。

Besides meeting the basic requirements of compressive strength and connecting porosity,recycled aggregate planting concrete requires a suitable alkali environment for plants and vegetative substrates for grasses.This paper optimized the concrete alkali vegetative environment and appropriate vegetative substrates to study the planting effect of recycled aggregate planting concrete.It was concluded that the grass species of indoor planting concrete could be rooted and germinated,especially perennial ryegrass grew faster than the bermudagrass;the grass mixed seeding had a better effect than the single seeding,and the root system was developed well after the alkali reduction;the growth states of plants without concrete was slightly better than that of plants with concrete and alkali reduction;based on the criteria of lawn appearance quality,after 60 days,the perennial ryegrass,tall fescue,and bermudagrass were better in terms of color,uniformity,and density.