Cement-stabilized coral reef sand construction process

Abstract

The invention discloses a cement-stabilized coral reef sand construction process. The process comprises, through an on-site test method, determining largest dry density and optimum water content of a mixture, carrying out an unconfined compressive strength test on the mixture according to compactness requirements so that a design strength requirement is satisfied, selecting PO42.5 ordinary portland cement, island coral reef sand with particle sizes of 6cm or less and seawater on the island as raw materials, replacing the common cement-stabilized macadam by cement-stabilized coral reef sand as a base layer, wherein the cement-stabilized base layer has thickness of 35cm, carrying out centralized mixing on the mixture in a factory by a stabilized soil mixer, carrying out transportation by a dumper, spreading the mixture by a spreading machine, carrying out rolling compaction by a vibratory roller, and carrying out seawater maintenance on the roll-molded base layer by a non-woven fabric or a regenerated cloth for 7 days or more. The cement-stabilized coral reef sand construction process can satisfy design and runway usage requirements, solves the problem that sand and stones in a special geographical position in an island are difficultly transported to open seas, realizes local material use and saves an engineering cost.

Description

technical field [0001] The invention relates to a construction technology of coral reef sand, in particular to a construction technology of cement-stabilized coral reef sand. Background technique [0002] Some islands and reefs in the South my country Sea are located in the tropical climate. They are coral reef islands, short of fresh water, far away from the land, and more than 610 nautical miles away from Sanya main island. In the process, the first difficulty encountered is the source of sand, stone materials and construction water used in construction, as well as the difficult problem of material transportation. If these materials are all transported from land for thousands of miles, it will not only prolong the construction period, but also greatly increase the cost of the project, making it difficult to meet the design and use requirements of the track. Contents of the invention [0003] In order to solve the problems related to material transportation, local materia...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the related problems of material transportation, local materials, and high cost, the present invention uses cement-stabilized coral reef sand instead of conventional cement-stabilized gravel as the base layer based on relevant research and experience, which meets the requirements of design and field use

Images