Mixture Screening Design to Choose Formulations for Functionally Graded Fiber Cements
Mixture Screening Design to Choose Formulations for Functionally Graded Fiber Cements
复制标题
用于选择功能级配纤维水泥配方的混合物筛选设计
DOI：
10.4028/www.scientific.net/msf.631-632.65
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
V. John
中科院分区：
文献类型：
--
作者：
C.M.R. Dias;H. Savastano;M. Taqueda;V. John
本工作采用筛选策略，检查十三个配合比的六组分纤维水泥配方组成的普通波特兰水泥，超细水泥，石灰石填料，硅灰，纤维素和聚乙烯醇纤维。将真空脱水技术应用于纤维水泥试件的生产中，养护10天，并进行四点弯曲试验。评价了材料的比例极限（LOP）、弹性模量（莫伊）、断裂模量（莫尔）和比能（SE）等力学性能，并将这些性能与原材料组分进行了关联，得到了混合规则。结果表明，筛选可以是一个很有前途的方法，产生连贯的纤维水泥混合规则，优化配方的成本和性能，甚至促进功能梯度纤维水泥配方的选择。
This work employing the screening strategy to examine thirteen mix proportions of six-component fiber cement formulations composed of ordinary Portland cement, ultra-fine cement, limestone filler, silica fume, cellulose and polyvinyl alcohol fibers. The vacuum de-watering technique was applied in the production of fiber cement specimens cured for 10 days and submitted to four-point bending tests. The mechanical properties such as limit of proportionality (LOP), modulus of elasticity (MOE), modulus of rupture (MOR) and specific energy (SE) were evaluated and these properties were correlated with the raw material fractions resulting in mixture rules. Results indicate that screening can be a promising methodology with which to generate coherent fiber cement mixture rules, optimize formulations in terms of costs and performance and even facilitate the choosing of formulations for functionally graded fiber cements.