Performance characteristics of concrete added with cellulose fiber
After the fiber is added into the concrete, under the action of water immersion and external force, a large number of evenly distributed fine fibers are formed, which can effectively prevent the occurrence of cracks caused by the plastic shrinkage, drying shrinkage and temperature change of concrete.
Significantly improve the mechanical properties of concrete
(1) Anti cracking effect on concrete
(2) Improvement of impermeability of concrete
(3) Improvement of freezing thawing resistance of concrete
(4) Improve the impact resistance and toughness of concrete
(5) Improvement of concrete durability
(6) Improvement of high temperature resistance of concrete
instructions
1、 Mix design
The mix proportion of ordinary concrete shall be designed according to the national or industrial standards. Cellulose fiber shall be used as an additional component. Fiber concrete shall be prepared according to the design mixing amount, without adjusting the concrete mix proportion.
2、 Mixing at construction site and mixing plant
The mixing of fiber concrete shall follow the following principles:
1. Fiber shall be added together with coarse aggregate;
2. It is recommended that the mixing time be appropriately extended by 40-60S compared with ordinary concrete
3、 Testing of fiber dispersibility
The fiber dispersion performance of on-site fiber reinforced concrete shall be tested according to the method provided by the company.
4、 Transportation, pouring and curing
1. Adopt the same transportation method as ordinary concrete;
2. Use the same pouring method as ordinary concrete;
3. The same curing method as ordinary concrete shall be adopted, and the curing of special works and structures shall comply with the provisions of relevant specifications.
The use of cellulose fiber is simple and convenient without changing the concrete mix proportion and on-site construction technology; The company will provide timely and accurate technical support according to the on-site use.
Scope of application
1. Water conservancy projects: dams, aqueducts, canals, water services, etc;
2. High speed railway: bridges, tunnels, ballastless track, etc;
3. Industrial and civil buildings: industrial buildings, civil buildings, etc;
4、 other : Highway, energy engineering, etc.
5. Marine engineering: cross sea bridges, ports and wharves;
6. Underground structure works: underground buildings;
