Preparation method of curb stone with high degree of closenness

Abstract

A preparation method of a curb stone with high degree of closeness comprises the following steps: taking the following raw materials in parts by weight: 5-15 parts of calcium dihydrogenphosphate, 5-15parts of metakaolin, 10-30 parts of cement, 10-25 parts of stone powder, 20-40 parts of quartz sand, 5-15 parts of acrylic acid, 1-2 parts of inorganic pigment, 0.2-0.8 part of a waterproof agent and1-3 parts of polypropylene staple fibers; adding water which accounts for 10-20% of the total weight of the raw materials and granite powder which accounts for 20% of the raw materials, and stirringand mixing by using a stirring machine until the raw materials are dissolved and gelled; pouring the gelled material in a curb stone mold, spreading out the gelled material, then spraying a coagulantaid, finally pouring concrete and then feeding to a drying room, and carrying out steam curing for 30-50 minutes at the temperature of 180-200 DEG C; and carrying out demolding, and curing for 28 daysin an environment at the temperature of 15-20 DEG C to obtain the curb stone. According to the preparation method of the curb stone based on granite leftovers, the granite leftovers are collected, and are calcined and ground into powder which serves as filler and is used in the raw materials of the curb stone, a large number of gravels can be omitted, furthermore, the compactibility of the curb stone can be improved effectively, and high compressive strength is ensured.

Description

technical field [0001] The invention belongs to the technical field of road infrastructure, and in particular relates to a preparation method of high-density road calculus. Background technique [0002] Curb stone is the abbreviation of the edge stones on both sides of the road surface, usually a strip structure between the road surface and the road shoulder on both sides of the road. Curb stones are usually laid on both sides of the road surface to separate the road surface from other structures. For example, a curb stone higher than the road surface can be provided between the sidewalk and the motorway. [0003] In the prior art, curbstones are usually impermeable, so another important function of curbstones is to block road surface water and guide road surface water into the drainage system to prevent random flow of road surface water. Traditional Curb stones are usually made of cement prefabrication or concrete pressing, or cutting and processing large stones into long ...