Porous fiber modified concrete
A porous fiber and concrete technology, applied in the field of concrete or mortar, can solve the problems of high brittleness, easy cracking, poor mechanical properties such as tensile strength and toughness, and achieve the effects of improving impact resistance, reducing the possibility of cracking, and enhancing toughness
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Embodiment 1
[0042] Example 1: Contrastive experiment of improving the fireproof and anti-explosion performance of concrete
[0043] In order to verify the fire and explosion protection effect of porous fiber concrete, comparative experiments were carried out on ordinary concrete and porous fiber concrete, the situation is as follows:
[0044] Specimen 1: Ordinary concrete specimen
[0045] 1) Concrete grade C25.
[0046] 2) The concrete mix ratio refers to the "Ordinary Concrete Mix Ratio Design Regulations, JGJ55-2000", without other admixtures.
[0047] 3) The test was carried out after a curing period of 28 days.
[0048] 4) Mixing system: dry mix fine aggregate + cement + fiber + coarse aggregate for 1 minute, add water and then wet mix for 2 minutes.
[0049] Specimen 2: Porous fiber concrete specimen
[0050] 1) The mix ratio of concrete is the same as above;
[0051] 2) Add polypropylene porous fibers with a dosage of 2kg / m3 into the concrete.
[0052] 3) Stirring system: the...
Embodiment 2
[0055] Embodiment 2: Comparative experiment of anti-shrinkage performance
[0056]In order to verify the anti-cracking and anti-seepage effect of porous fiber concrete, comparative experiments were carried out on ordinary concrete and porous fiber concrete, the situation is as follows:
[0057] Specimen 1: Ordinary concrete specimen
[0058] 4) Concrete grade C25.
[0059] 5) Concrete mix ratio refers to "Common Concrete Mix Ratio Design Regulations, JGJ55-2000", without other admixtures.
[0060] 6) Mixing system: dry mix fine aggregate + cement + fiber + coarse aggregate for 1 minute, add water and then wet mix for 2 minutes.
[0061] Specimen 2: Porous fiber concrete specimen
[0062] 1) The mixing ratio and mixing process of concrete are the same as above.
[0063] 2) Add 2kg / m to the concrete 3 porous polypropylene fibers.
[0064] 3) Stirring system: appropriately prolong the stirring time to make the fibers disperse evenly.
[0065] The experimental process was c...
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