Lastly, the values of long-term dry shrinkage of crushed sand concrete were observed and predicted by using RBF neural network model.

最后，用R BF神经网络模型预测了石屑混凝土的长期干缩值。

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A part of fly ash might be replaced with stone powder in high-paste RCC, but the content of stone powder in crushed sand should be not more than 20%.

所以，在富胶凝材料碾压混凝土中可以用石粉取代部分粉煤灰，但人工砂中的石粉含量不宜超过20%。

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Joint filling 48 hours after macadamize, use the mixture of cement and crushed sand with 1:0.5 to fill, after that, use the water to clean roughly the tile surface.

铺装48小时后进行填缝，用水泥与石粉以1：0 . 5的比例确实填满砖缝，并确实地把砖面用清水清洗干净。

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Portland cement is a material that holds together the sand and crushed stone in concrete.

VOA: special.2009.12.01

Last August thousands of leatherback eggs and hatchlings were crushed by bulldozers moving waterlogged sand from key nesting areas.

BBC: New law to protect Puerto Rico leatherback turtles