Assessing the properties of concrete containing laterite Concrete that having a blend of laterite soil has been studied by different researchers either as partial replacement or fully replacing aggregate in concrete. A et al. According to Muthusamy and Kamaruzaman, , there was fall in the slump as the proportion of laterite as coarse aggregate rises. This finding is illustrated in Figure 1 by a bar chart which shows a continuous decline in slump as the proportion of laterite increased.
Figure 1: Effect of Laterite content on workability of concrete Muthusamy and Kamaruzaman, Laterite was used as sand substitute in concrete by Udeoyo, et al.
Figure 2 shows that at higher replacement of sand by laterite, the concrete became more workable. Alawode and Idowu investigated water-cement ratio effect on laterised concrete workability.
Table 1shows the workability of concrete mixes in comparison to that of lateritic concrete. This statement was also validated by Oyekan and Balogun, who concluded that laterite produces a poor concrete. However, other studies have shown that this assertion is not true. The influence of laterite proportion on compressive strength can be seen in Figure 3. According to Muthusamy and Kamaruzaman, , 10percent laterite aggregate replacement of coarse aggregate can yield a comparable with that of normal concrete.
They also added that 30percent replacement exhibited the targeted strength of 30Mpa. The compressive strength of laterite concrete increased with curing age and falls with increase in proportion of laterite Udeoyo, et al. Figure 4 gives the of strength of laterised concrete as that of the normal concrete of similar age. Table 2 shows compressive strength of latersied concrete Udeoyo, et al. Figure 2: Compaction factor of laterised concrete Udeoyo, et al. Ryduchowska, stated that lateritecould be utilized as blend with River sand in making concrete.
The designed mix used by Ryduchowska, is shown in Figure 5. Kamaruzaman and Muthasamy looked at how curing regime affects compressive strength of laterised concrete. They used different variation of laterite aggregate in making concrete with also different curing regime specifically water, natural weather and air.
Their results showed that concrete cured in water showed better performance. The outcomes of their study are presented in Figures 6, 7 and 8. Figure 3: Effect of laterite proportion on concrete compressive strength Muthusamy and Kamaruzaman, Figure 4: Compressive strength of laterised concrete relatedto the strength of control Table 2: Compressive strength of laterised concrete Udeoyo, et al.
The results are shown inTable 3. They recommended that lateritemight utilized as sole fine aggregate for making structural concrete. Table 3: Compressive strength with different mix proportions Ettu, et al. Figure 7 displayed that the tensile strength of laterised concrete ranges between 77percent to 99percent of control concrete.
Table 4: Tensile strength laterised concrete Udeoyo, et al. Table 5 shows the results of their findings. Laterite sand and limestone fillers were utilized by Saravanan, et al.
The results revealed that 50percentpercent Laterite- Limestone filler , 75percentpercent Laterite-Limestone filler and control specimen were more or less the equal for grade M20 and M25 concrete. According to Osunade, , tensile strength increase with grain size and curing age. In a different study by Osunade, granite fines were used as replacement in laterised concrete using three different mix proportions , Table 5: Comparison between research findings Ukpata and Ephraim, 2.
They observed that the flexural strength for was greater than that of at optimum mix proportion. Udeoyo, et al. The authors also observed that flexural strength of laterised concrete in comparison to normal concrete is between percent as presented in Figure 9.
Investigation on elastic modulus and deformity modulusof laterised concrete conducted by Olugbenga, using three concrete mixes; , and Another study was conducted to assess the influence of stress on elastic modulus and modulus of deformity by Ata and Adesanya, The same mix ratios was adopted with the former and samples were tested for 7 and 28 days strength. The results of their study showed that an increase in the amount of applied stress resulted in the reduction of modulus of elasticity and deformity.
Laterised concrete as a structural element Although,work have been done on properties of laterised concrete. Nevertheless,very few research looked at its application to structural elements. Olutage, et al. They observed that laterised concrete gave satisfactory performance compared with normal concreteprovided laterite content is less than 25percent.
Retrieved April 6, Butzer October Geographical Review. JSTOR Petrology of Laterites and Tropical Soils. ISBN Retrieved April 17, Roy; Venkatesh, V. May 11, Geological Survey of India, Calcutta. Archived from the original PDF on March 16, Gordon; Osborne, Robert C.
March 7—10, Archived from the original PDF on February Climate Dynamics. Bibcode : ClDy ISSN S2CID October Mineral Processing and Extractive Metallurgy Review. May 1, Chemical Geology. Bibcode : ChGeo. Frontier Research on Earth Evolution. August Australian Journal of Earth Sciences. Bibcode : AuJES.. Archived from the original on International Archaeological Research Institute.
Carousel Next. What is Scribd? Explore Ebooks. Bestsellers Editors' Picks All Ebooks. Explore Audiobooks. Bestsellers Editors' Picks All audiobooks. Explore Magazines. Editors' Picks All magazines. Explore Podcasts All podcasts. Difficulty Beginner Intermediate Advanced. Explore Documents. Traditional Material-Laterite Stone.
Uploaded by Chaula Trivedi. Document Information click to expand document information Description: The presentation in the subject of Sustainable Building Materials- Laterite stone. Original Title Traditional Material-laterite Stone. Did you find this document useful? Is this content inappropriate? Report this Document. Flag for inappropriate content.
Download now. Original Title: Traditional Material-laterite Stone. Related titles. Carousel Previous Carousel Next. Reinterpreting Vernacular Architecture Through Contemporary.
Jump to Page. Search inside document. Raghu Thyagaraj. Ranajoy Ghosh.
0コメント