9. _ what_ the 3D-printer pipes out is a concrete mix that hardens when it dries. 相关知识点: 试题来源: 解析 答案见上9. What is, the 3D-printer pipes out 语,设空处引导主语从句,从句中缺少pipes out 的宾语,表示 “… …的东西” ,应用 what 引导该从句。
15.What the 3D-printer pipes out is a concrete mix that hardens when it dries. 相关知识点: 试题来源: 解析 答案见上15. 句意:3D打印机输出的是干燥时会变硬的混凝 混合物。分析句子结构可知… the printer pipes out 是主语从句,从句中缺少 pipes out 的宾语,表示"什么",应 what 引导该从句。
Admixtures are added to the concrete mixture before or during mixing. The main difference between additives and admixtures is thatadditives are added to cement during manufacturing to get new properties for cement whereas admixtures are added to concrete mixtures while mixing to get new properties. W...
The strength of concrete is divided into twelve grades: C7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55, C60 and so on. Is refers to the concrete materials with improving the concrete (cement, water, sand, stone) the ratio between. There are two methods: one is to use ...
Software for transportation planning will tell you where your precast concrete elements need to be delivered to and in what order. Start with the most time-consuming processes Where do you repeatedly have problems? For example, planning production sequence manually, even using Excel, is quite an ...
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This idea isn’t as far-fetched as it may seem. It boils down to an understanding of how concrete forms, and how to exploit that process to our benefit. Concrete is a combination of coarse stone and sand particles, called aggregates, that mix with cement, a powdered blend of clay and...
1. Which Type of Structural Concrete Is Best for My Project? Your contractor’s answer may be a bit more complex than you expect. They may even give you a choice, but they’ll provide your options based on a few different project specifications. ...
Proper mix of carbon to nitrogen: the ratio should be about 30:1. Small pieces: Break big chunks up, as smaller particles will break down faster. Why Compost? The major goal of composting is to reduce the amount of solid waste you generate and keep it out of the municipal landfills, wh...
Retarders are additives that slow the setting of cement paste and, by extension, mixtures like mortar or concrete that contains cement. Concrete retarders are also known as retarding admixtures or just retarders. Adding a retarder to the concrete mix can delay the setting time by up to an ...