Cement and aggregate and water corresponding to an appropriate proportion of the concrete mixing materials from the world's most widely used,the amount of the largest civil engineering materials,are easy to shape and cheap.The use of waste disposal,etc.,and in people's minds,more of this material only for construction,but I am personally of the survey analysis and tests to come together with the admixture of cement and water to the appropriate mixing ratio of water from the mud,to make beautiful,lovely doll cement.