Dredged marine sand as a new source for construction materials
Dredged marine sand as a new source for construction materials
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DOI：
10.3989/mc.2011.61710
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发表时间：
2012-03
影响因子：
2.1
通讯作者：
J. Limeira;L. Agulló;M. Etxeberria
中科院分区：
文献类型：
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作者：
J. Limeira;L. Agulló;M. Etxeberria
这项工作涉及在膏体和砂浆中使用疏浚的海砂(DMS)作为建筑材料。使用了两个西班牙港口的不同材料：来自Sant Carles de la Rapita的DMS-0和来自巴塞罗那的DMS-A、DMS-B和DMS-C。本研究的目的是评估DMS在不同的水泥浆体和砂浆中分别作为外加剂(其对粘聚力和流动性的影响)或作为细粒校正剂(其对抗压强度的影响)。进行了两个试验阶段：第一阶段，DMS-0材料用于生产浆体和砂浆(部分替代原砂0/2 mm)，第二阶段，DMS-A、DMS-B和DMS-C用于砂浆生产(部分替代原砂0/5 mm)。将所获得的新鲜和硬化性能与对照混合料的性能进行了比较；结果表明，DMS的最佳原砂替代率为25%。
This work deals with the use of dredged marine sand (DMS) in pastes and mortars as construction material. Different materials from two Spanish ports were used: DMS-0 from Sant Carles de la Rapita and DMS-A, DMS-B and DMS-C from Barcelona. The aim of the study was to assess DMS as addition (its influence on cohesion and fluidity) or as a fine granular corrector (its influence on compressive strength) in different mixes of cement paste and mortars, respectively. Two experimental stages were carried out: firstly, DMS-0 material was used on the production of pastes and mortars (partial substitution of raw sand 0/2 mm); secondly, DMS-A, DMS-B and DMS-C were used on mortar production (partial substitution of raw sand 0/5 mm). The fresh and hardened properties obtained were compared to those of the control mixes; the results revealed 25 % as an optimum substitution ratio of raw sands for DMS.