Experimental Study On The Performance Of The New Material Of Diaphragm Wall--Hardened-Slurry

The diaphragm wall is usually made of concrete or reinforced concrete, and when it comes to the diaphragm wall which is used to sustain main load, this kind of diaphragm wall can performance well, but if the main purpose of the diaphragm wall is being temporary, special or water-proof engineering the diaphragm wall using concrete or reinforced concrete only would not be economical because the diaphragm wall cost too much concrete, diaphragm wall made of hardened-slurry is a better way to solve the cost-problem, and another problem comes that :engineer is not familiar with hardened-slurry's performance, so it is necessary to study hardened-slurry and probe some regular pattern in the performance of the harden-slurry.In the first part of this thesis, the history of the diaphragm wall in the world is introduced, then in the following, the main element of the hardened-slurry -slurry is related. Through the process of cement' hydration ,the reaction between water glass and clay, the reaction between cement and water glass, the solidification of the of hardened cement, the solidification mechanism of the hardened-slurry is discussed. A conclusion is drawn that the process of the hardened-slurry is some like the hydration of the cement, but there are also some differences .Since the hardened-slurry is a new kind of construction material, the paper undertook some experiments to find a proper way to optimize its performance. The author think that sand but not mortar can improve the fluidity of the hardened-slurry, and the water glass being divided into two partitions can also better the hardened-slurry. In the last partition, the air-agitating method compared with other construction methods is thought to be the proper one in the diaphragm construction, and the optimal agitating- tine is one hour or so.To verify the prescription of the hardened-slurry, the author probed the feasibility of new prescription and test the new hardened-slurry, it is proved that the new hardened-slurry can meet the demand of design and construction.