Polypropylene fiber whole-coral aggregate concrete and preparation method thereof

Abstract

The invention discloses polypropylene fiber whole-coral aggregate concrete and a preparation method thereof and relates to the technical field of building materials. The polypropylene fiber whole-coral aggregate concrete is prepared from the following components according to the proportion of kg / M<3>: 600-750kg / M<3> of cement, 0-150kg / M<3> of admixture, 200-262.5 kg / M<3> of water, 700-860kg / M<3> of fine aggregate, 500-660kg / M<3> of coarse aggregate, 0.91-2.73kg / M<3> of polypropylene fiber and 5-11kg / M<3> of water reducing agent. Compared with the existing coral aggregate concrete, the polypropylene fiber whole-coral aggregate concrete disclosed by the invention has the beneficial effects that (1) coral reef, sand and seawater of open-sea island reefs are fully utilized and obtained locallyso as to replace scare terrigenous common sandstone and fresh water; (2) the purposes of overcoming the shortage of raw building materials, reducing marine transportation cost and shortening the construction period can be achieved; (3) the benefit for strengthening the construction of national open-sea island reef engineering is achieved, and the needs of national marine strategy are met.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a polypropylene fiber all-coral aggregate concrete and a preparation method thereof. Background technique [0002] Coral islands and reefs standing in the open ocean provide indispensable support for the record of marine environmental changes, biodiversity exploration and human production and life with their unique geological structure, biogenesis and landform morphology. The most important thing is these special coral reefs Accumulated property has become the only carrier and an important source of building materials for island and reef engineering construction. [0003] The engineering construction of islands and reefs is mainly based on the structures of ports, docks, airports and houses. These structures inevitably use reinforced concrete, especially for the remote seven coral reefs actually occupied by my country’s Nansha Islands. The infrastructure on them is ent...

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Problems solved by technology

[0005] However, the South my country Sea is located in a tropical climate zone, with perennial high temperature, high humidity, high salinity and strong ultraviolet radiation, many typhoons, and harsh natural environment. Coral aggregate concrete itself has low strength, small elastic modulus, easy cracking, poor permeability, etc. Disadvantages: Coral aggregate concrete in service has serious damage phenomena such as cracking, caving, erosion and abrasion, and the development of coral aggregate concrete is limited

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