纳米粉煤灰夹心砌块的研制

Study on the Nano-fly Sandwich Block

利用纳米材料、水泥、粉煤灰等主要原材料,加入适量外加剂,中间填入废弃聚苯乙烯泡沫,通过自然养护方法研制出纳米粉煤灰夹心砌块这一新型墙体材料。依据粉煤灰混凝土空心砌块的设计要求,设计砌块块型。根据正交实验方法,以砌块抗压强度为主要指标,优化砌块配合比参数,研制出了具有承重、保温隔热等多重功能的新型砌块。

A fundamental policy of our country is to substitute solid center clunch brick with a new type of mural material. Fly ash block is a new type of mural material, which is encouraged to be studied by the policy. At present, the fly ash mural material has the performance of weight bearing and a poor heat preservation function. But the heat preservation one don＇t have weight bearing character. The propose of this paper was to work out a new type of mural material which has the functions of load-bearing and thermal insulation. The block is composited by fly ash, nanometer material, portland cement and other raw material The waste polystyrene is filled in the middle of the block. The block-type was designed in accordance with the requirements of fly ash concrete hollow block. According to the method of orthognnal experiment, block＇s compressive strength as the main index, the mix ratio of raw materials of the block was optimized. Through methods of nature conservation, a new wall material-the nano-fly sandwich block was developed. Through the experiment, the compressive strength of the new type of block achieved 13.68 MPa. The heat transfer coefficient of such mural material was 1.02 W/（m^2·K）. The nano-fly sandwich block studied in this paper possesses the good performance of antipress strength, attains the standard of MulO. The block＇s heat preservation property is better. Such sandwich block has the functions of weight bearing, heat preservation, environment protection and waste using.