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3. Testing Methodology 3.1. Introduction This chapter outlines the author‟s proposed testing methodology for selecting a suitable soil, optimizing the soil mix, producing test blocks, and evaluating strength, deformability, and durability properties of the blocks. The methodology is a systematic series of procedures evaluating potential soils at every phase of production. Readily available potential soils are classified and then methodically evaluated through the sequence of tests illustrated in Figure 3.1. If, at any point during the process, the proposed soil or soil mixture does not satisfactorily satisfy the requirements, a step back is taken to reconsider further action through selection of a new soil or soil amendments. 14
3.2. Testing Methodology Flow Chart Testing Methodology for Determining Soil Suitability in SCEB Production Obtain raw samples of soil to be tested for suitability in SCEB production. Initial Soil Observations Angular sand aggregate Soil free from organic material Grain Size Analysis/Soil Classification Criteria: Satisfactory coarse to fine grain particle ratio Satisfactory plasticity index (>10) Select range of soil mix ratios Provide several sample mixes by varying the relative proportions of clayey soil, sand, cement, and water to compare performance in block production and testing Repeat to achieve optimal mix design Acceptable Unacceptable Acceptable Acceptable Acceptable Mini/Large-Block Production and Testing Criteria: Satisfactory compaction/moisture content Satisfactory dry density Satisfy UCS & MOR standards Satisfactory durability performance Acceptable Figure 3.1: SCEB Testing Methodology Infeasible Soil Amendments Blending/Remixing Stabilization Unacceptable material properties Proceed with SCEB Production 15
Page 1 and 2: A Proposed Best Practice Method of
Page 3 and 4: Krosnowski, Adam Davis (M.S., Depar
Page 5 and 6: Table of Contents 1. Introduction .
Page 7 and 8: Table of Figures Figure 2.1: World
Page 9 and 10: 1. Introduction The demand for sust
Page 11 and 12: soils must be defined to standardiz
Page 13 and 14: move more towards sustainable “gr
Page 15 and 16: 2.1. SCEB Technology Advantages The
Page 17 and 18: latent heat of vaporization. The ef
Page 19 and 20: sedimentation (jar) test, ball drop
Page 21: opportunities for water to alter th
Page 25 and 26: transported sealed in airtight five
Page 27 and 28: Figure 3.2: Gilson Testing Screen M
Page 29 and 30: infer the clay content. Figure 3.7
Page 31 and 32: potential for minimizing costs. Det
Page 33 and 34: calculate bulk unit weights of the
Page 35 and 36: 3.9. Modulus of Rupture: Three-Poin
Page 37 and 38: Figure 3.16: SCEBs soaking in water
Page 39 and 40: samples from the Dead Man‟s Curve
Page 41 and 42: previous experience, visual inspect
Page 43 and 44: one week intervals during the initi
Page 45 and 46: UCS [psi] UCS [psi] 1000 800 600 40
Page 47 and 48: UCS [psi] UCS [psi] 1000 800 600 40
Page 49 and 50: Lower Limit: 1 part cement, 1 part
Page 51 and 52: Percent Passing Soil #15: Hydromete
Page 53 and 54: the sample and not the entire soil
Page 55 and 56: Large blocks were produced from two
Page 57 and 58: The large blocks produced were kept
Page 59 and 60: decreased by 23-25% over the course
Page 61 and 62: Figure 4.23: UMU Mini-Blocks; Five
Page 63 and 64: Average UCS [psi] 2000 1600 1200 UM
Page 65 and 66: Clayey soil is often mined and tran
Page 67 and 68: Figure 5.1: Full Block in 3-Point B
Page 69 and 70: nature will increase the level of c
Page 71 and 72: this point of testing. The testing
Page 73 and 74:
Average Large Block UCS [psi] 800 7
Page 75 and 76:
Figure 5.13: Aspect Ratio Test, Fiv
Page 77 and 78:
Figure 5.17: Aspect Ratio Test, One
Page 79 and 80:
E [ksi] 35 30 25 20 15 10 y = 23.85
Page 81 and 82:
The equation of the trend-line was
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of optimizing a soil mix design. Of
Page 85 and 86:
plasticity. They also do not offer
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the SCEB strongly influence its com
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specimens will be tested for compre
Page 91 and 92:
P f Pf [ psi] 2 A force at fail
Page 93 and 94:
Coduto, D. P. 1999. Geotechnical En
Page 96 and 97:
8.2. Crow Tribe Case Study Test Dat
Page 98 and 99:
8.2.2. Schmidt Hammer Test Data R V
Page 100 and 101:
UMU Sample #15 1:3 (6 x 12 x 3 5/8)
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