Roller compacted concrete cushion changing and filling method

Abstract

The invention provides a roller compacted concrete cushion changing and filling method, which relates to a foundation processing method, in particular to a changing and filling method of a large-area shallow soft foundation and an uneven foundation. The roller compacted concrete cushion changing and filling method comprises the following steps of: checking a foundation trench; excavating the foundation trench and an earthwork; mixing changing and filling materials; spreading; and rolling and compacting. The changing and filling materials comprise the following components in parts by weight: 90-120 parts of water, 80-120 parts of cement, 200-250 parts of fly ash and 1900-2300 parts of graded broken stone or 90-120 parts of water, 80-120 parts of cement, 2100-2300 parts of sand mixing stone. The roller compacted concrete cushion changing and filling method has high bearing capacity, low cost and quick construction period.

Description

Technical field:

[0001] The invention relates to a method for replacing and filling a roller compacted concrete cushion, which relates to a foundation treatment method, in particular to a method for replacing and filling large-area shallow soft foundations and uneven foundations. Background technique:

[0002] Existing treatment of weak foundations is either to replace and fill, or to use high-pressure jet grouting piles, CFG piles or other pile foundations, and to replace and fill with materials such as concrete, gravel soil or lime soil. Concrete replacement means that the replacement material is concrete. The replacement construction is more convenient and the bearing capacity is higher, but the replacement cost is higher. At the same time, due to the high strength of the replaced concrete, it is not easy to compress, and the local parts and the non-replaced parts Uneven settlement causes uneven settlement of buildings. Gravel soil or lime soil replacement means that the...