This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength.
本文通过试验与工程实践，介绍采用碎（砂）石桩及低强度混凝土桩组合构成复合地基的试验成果、计算方法及应用检测成果。
This system can be used to test the properties of the moulding sand on line, such as sand compactability, green compressive strength, and sand temperature, a...
该系统能够用于在线检测型砂的紧实率、湿压强度和砂温等性能，并且能够根据检测结果通过控制补加水量将型砂紧实率控制在设定的工艺范围之内。
The concrete strength test was conducted with the concrete made of fly ash, cement and sand plus a certain high efficient water reduction agent FDN and the orthogonal design method.
采用粉煤灰、水泥、砂石，掺加一定量的高效减水剂FDN，利用正交设计方法安排试验。
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