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THE EFFECTS OF PRODUCTION METHODS ON THE COMPRESSIVE STRENGTH OF HOLLOW SANDCRETE BLOCKS

机译:生产方法对空心混凝土砌块抗压强度的影响

摘要

The high demand for sandcrete block for the development of physical infrastructures in Nigeria makes it important in building and construction industry. This research assessed three local methods of producing sandcrete blocks of sizes nine (9’’) and six (6’’) inches respectively. The methods used in producing the blocks were manual compaction, hand ramming and power operated method. Mix ratio of 1:9; a head pan of cement to nine head pans of sharp sand was used in all the methods. The materials (sand & cement) were thoroughly mixed until a homogenous mix with uniform color was obtained. Curing was done by sprinkling water on the specimens three times daily for 28 days and the compressive strength of the blocks was determined on the 7th, 14th, 21st, 28th days respectively. The study revealed that compaction has greater effect on the compressive strength of sandcrete blocks in the sense that blocks produced using vibrating machine has the highest compressive strength amongst the three methods.
机译:尼日利亚对物理基础设施的发展对砂砾块的需求很高,这使其在建筑业中很重要。这项研究评估了三种分别生产尺寸为九(9')和六(6')英寸的砂砾块的本地方法。生产砌块的方法有手动压实,手动夯打和电动操作。混合比例为1:9;在所有方法中均使用水泥头锅至九个尖沙头锅。将材料(沙子和水泥)充分混合,直到获得具有均匀颜色的均匀混合物。通过每天三次在样品上洒水进行固化28天,分别在第7、14、21、28天测定块的抗压强度。研究表明,从三种方法中,用振动机生产的砌块具有最高的抗压强度,从某种意义上说,压实对砂浆砌块的抗压强度影响更大。

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