耐碱玻璃纤维混凝土的配合比设计

Mix design of alkali-resistance glass fiber concrete

为解决耐碱玻璃纤维防腐蚀问题,基于最紧密堆积理论,提出了混凝土配合比设计的新方法:在保证粗、细集料处于最紧密堆积的状态下,减少混凝土中的水泥用量.粉煤灰作为细集料早期填充混凝土的空隙,后期发挥胶凝材料的作用,其掺量可达30%以上,并且同时可以保证混凝土的早期强度不降低.耐碱玻璃纤维应用在这种富含活性混合材料的混凝土中既可以提高混凝土的抗拉强度又能够保证纤维不被腐蚀.

According to the maximal unit weight method, a new way for concrete mix design had been advanced which decreased the content of cement in concrete while the coarse and fine aggregate was under the condition of maximal unit weight. Fly-ash, whose proportion can reach to 30%, severed as fine aggregate to fill the gap of the concrete in the early state and had the role of cementing material in later, and it guaranteed the strength of concrete. It was shown that the ultimate tensile strength of concrete can be increased and glass fiber can be avoided corrosion which was the common phenomenon in the ordinary concrete.