研究了以铸造废砂为填料、废旧地膜为基体，制备复合材料的界面问题。
The interface of the composites made of waste foundry sand as fillers and waste mulching films as matrix was studied.
铸造生产的两大污染源，一是使用含有有毒物质的树脂黏结剂，二是排放的废砂成为大量固体废物。
In foundry production, two great pollution sources are use of resin binders containing toxic matters and large amount of solid garbage resulting from waste sands.
利用地方瓷砂原料和废碎玻璃试制了具有防水、保温功能的高温发泡陶瓷。
The high temperature foamed ceramic with water all proof and thermal insulation has been trial - produced by using local porcelain sand and cullet.
废石尾砂胶结充填技术以它可以处理消纳井下矿坑废石，且无污染，进一步实现废石不出坑胶结充填的技术优势，而被地下开采矿山广泛的接受和应用。
Cemented Rockfill(CRF) can deal with mining waste rock and without pollution, it had been accepted and applied, because its absorbed waste rock and cemented backfill technology predominance.
试验表明，废石粉部分取代砂，可以改善砂浆的和易性，减少砂浆收缩，提高抗压强度并有利施工。
The tests show part of the waste stone dust instead of sand can improve workability of mortar, reduce mortar contraction and increase compression strength. It is of advantage for construction.
试验表明，废石粉部分取代砂，可以改善砂浆的和易性，减少砂浆收缩，提高抗压强度并有利施工。
The tests show part of the waste stone dust instead of sand can improve workability of mortar, reduce mortar contraction and increase compression strength…
试验表明，废石粉部分取代砂，可以改善砂浆的和易性，减少砂浆收缩，提高抗压强度并有利施工。
The tests show part of the waste stone dust instead of sand can improve workability of mortar, reduce mortar contraction and increase compression strength…
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