Estimating The Uniaxial Compressive Strength of TwoCell Hollow Sandcrete Blocks J. C Ezeokonkwo Department of Civil Engineering University of Nigeria, Nsukka. Enugu State, Nigeria Corresponding Author: J. C Ezeokonkwo _____ Abstract The determination of twocell hollow sandcrete block strength requires capping which is a tedious process
Also, the compressive strength of the cubes increases with increase in the saturated surface dry density as shown in fig. 2. From table 3, the compressive cube strength ranges from 3.49N/mm² to 7.11N/mm², which are higher than the minimum compressive strength of sandcrete block by NIS 87:2007 ranging from 2.5N/mm² to 3.45N/mm².
The compressive strength were determined as an average of 3 blocks. The compressive strength of sandcrete blocks made with increasing SBA percentages varies from 4.78N/mm2 to 1.83N/mm2, 5.07N/mm2 to 2.30N/mm2 and 5.33N/mm2 to 3.08N/mm2 for 7
The research paper published by IJSER journal is about DETERMINATION OF COMPRESSIVE STRENGTH OF LATERITIC SANDCRETE CUBESx, published
The majority of the sandcrete blocks used in the Nigerian building industry fall short of the minimum specifiion standards. There is evidence to suggest a wide variation in compressive strength from one block manufacturer to another and also within block samples from a single source. This problem has been attributed to poor quality control and substandard constituent materials.
5.1.2 Compressive strength test From table 4.2 and figure 4.1 1. The compressive strength increased with increasing plaster thickness. 2. The maximum average compressive strength is attained with the 20mm plaster thickness. 3. The behaviour of the six prisms at failure is global buckling. In which the prism bent approvable broke.
This is a complete project material titled "Comparing The Compressive Strength Of Hollow Sandcrete Blocks Made With Stone Dust And River Sand As Fine Aggregate" for students of Civil Engineering Department either for HND, ND, Bsc, Masters, Phd etc. This material can be used as a reference
This research investigated and compared the strength of manual with machine compacted sandcrete hollow blocks using Dangote and Elephant (Ordinary Portland) cement brands in Nigeria. Thirty two (32) samples were moulded from the two brands of cement i.e. sixteen (16) from each cement brand for both manual and machine compaction methods and were cured for 7, 14, 21, and 28days respectively.
Compressive strength, and Density tests were done before crushing. For the purpose of this study, sixty (60) numbers of 450mm x 150mm x 225mm sandcrete blocks was produced. 23 Determination of the Compressive strength The compressive strength were done by crushing Sandcrete blocks of sizes 450mm x 150mm x 225mm on a
the least unit compressive strength of the 225mm (9") sandcrete blocks was 0.63N/mm2 while the average compressive strength of the 225mm (9") blocks was 0.94 N/mm2 these values fall below the standard prescribed for load bearing sandcrete blocks. The Nigerian industrial standard specified that the lowest compressive strength of individual
Strength of Blended Cement Sandcrete & Soilcrete blocks Containing Sawdust Ash and Pawpaw com Page 37 compressive strength of binary and ternary blended cementsandcrete and soilcreteblocks containing sawdust ash and pawpaw leaf ash was specifically investigated. It is hoped that the successful utilization of sawdust ash and
Compressive strength test was carried out on the blocks at 28 days and sieve analysis was also carried out on the soil samples. The study confirmed that the quality of aggregates used is suitable for block making. The compressive strength of the Sandcrete blocks is below standard recommended by the Nigerian Industrial Standards (NIS) 87:2000.
This results in the output of poor quality blocks with poor strength properties. Whereas Nigerian burnt bricks are reported to have compressive strength in the range of 11.5N/mm2 to 26.0N/mm2, the corresponding range for sandcrete blocks was only found to be 1.45M/mm2 to 3.5N/mm2 (Graham, 1990 Danso, 1994).
properties be established. Not much literature exist on the mathematical relationship between the compressive strength and the other properties of sandcrete blocks. Danso  studied the variation of flexural strength and some other block properties of sandcrete blocks with compressive strength. He did not, however extend it to
The three types of sand (Dredged, River Sand and Dug out) being used for the production of sandcrete blocks were obtained and used to produce 225mm x 225mm x 450mm sandcrete blocks and the blocks were tested for compressive strength. It was discovered that only the sandcrete blocked produced with dredged sand met the Nigerian In Download Views: 259
Sandcrete is composed of aggregates embedded in a cement matrix which fill the space between the aggregates and bind them together. This project investigated the compressive strength of segmental
compressive strength as function of age are also shown in Figure 5 . From Figure 5, the practical correspondence of the prototype and model compressive strength variation can be conﬁ rmed. The compressive strength of sandcrete blocks increased with longer wet curing durations for all of the mixes tested, as expected.
Mar 03, 2015 · The average compressive strength of the sandcrete blocks produced mechanically with same brand of cement at age 7, 14, 21 and 28 days ranged between 2.23N/mm 2 to 2.96N/mm 2.The average compressive strength of sandcrete blocks produced manually with the Elephant brand of cement at age 7, 14, 21 and 28 days of production ranges between 2.61N/mm 2 to 2.89N/mm 2.
wall. Sandcrete blocks are widely used as walling units and over 90% of houses in Nigeria are being constructed of sandcrete blocks (Baiden and Tuuli, 2004). In the hardened state, sandcrete has a high compressive stress and this strength increase with density. The range of minimum strength specified in NIS 87:2007 is between 2.5N/mm2 to 3.45N/mm2.
Sandcrete blocks possess an intrinsic low compressive strength making them susceptible to any tragedy such as seismic activity. For a long time in Nigeria, sandcrete blocks are manufacture in many parts of the country without any reference to suit local building requirements or good quality work (Oyekan&Kamiyo, 2008). Sandcrete blocks
strength decrease with increase in percentage replacement. But the best results were obtained at 30% replacement with a value of compressive strength of 4.7N/mm2 of the 28day strength of that of the control at 28days, which met the standard requirement in Nigerian building code. KEYWORDS: Eggshell ash, Cement, Sandcrete block and Compressive
Yusuf and Hamza (2011) carried out a study on the compressive strength of six (450x150x225mm) and nine (450x225x225mm) inches manually produced sandcrete block s. The found the 7day average compressive strength of 6 inches blocks to be 2.55N/mm 2
The final compressive strength of sandcrete can be as high as 4.6 N/mm 2, which is much less than concrete''s 40 N/mm 2.Sandcrete is unsuitable for loadbearing columns, and is mainly used for walls, or for foundations if no suitable alternative is available.
This test is used to evaluate compressive strength of sandcrete block. Compression strength is the ability of blocks to resist an axially applied load on the edge or the bed face of the block. Compression testing machine is employed to evaluate the compressive strength of blocks. The test is conducted on blocks at 28 days of age and three
Compressive strength and density tests were performed on both sandcrete and interlocking blocks. Compressive strength test was carried out to determine the load bearing capacity of the blocks. The blocks that have attained the ripe ages for compressive strength test of 7, 14, 21 and
2.2 Compressive Strength The results of the compressive strength of blocks are shown in Tables 2,3,4,5 and 6. The tests indie that the compressive strength of individual sandcrete blocks ranged between 0.11 N/mm2 to 0.75 N/mm2. The average compressive strength of the five blocks ranges was between 0.14 N/mm2 to 0.66 N/mm2. These
Compressive strength is said to be influenced by the level of quality control employed in selection of materials and adequate curing is a factor to put in place when producing sandcrete block [21
This research work applies Scheffe''s second degree simplex theory to formulate a regression model for the optimization of the compressive strength of sandcrete blocks using cassava peel ash (CPA) blended Portland cement (OPC) as binder material for different mix ratios as multivariate functions with the proportions of the sandcrete block ingredients serving as variables.
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