This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength.

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...

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.