Point Load Test for Estimation of Concrete Compressive Strength

10.14359/2189 ◽  
1989 ◽  
Vol 86 (4) ◽  
Keyword(s):  
Compressive Strength ◽  
Point Load ◽  
Load Test ◽  
Concrete Compressive Strength ◽  
Point Load Test

scholarly journals Aggregate suitability and Geo-chemical investigation of limestone for construction industries in Pakistan: An approach for economic development

2021 ◽  
Author(s):  
Asad Kamran ◽  
Liaqat Ali ◽  
Waqas Ahmed ◽  
Sobia Zoreen ◽  
Shah Jehan
Keyword(s):  
Compressive Strength ◽  
Uniaxial Compressive Strength ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Point Load ◽  
Load Test ◽  
Raw Material ◽  
Schmidt Hammer ◽  
Point Load Test

Abstract This study investigated the aggregate suitability and geo-chemical characteristics of limestone (LS) for construction industries. The results of aggregate parameters for different applications revealed that specific gravity (SG = 2.6), water absorption (WA = 0.47%), bulk density (BD = 1.58 g/cm3), flakiness index (FI = 16.8%), elongation index (EI = 16.39%), soundness (S = 1.6%), aggregate impact value (AIV = 14%), Los Angles Abrasion value (LAAV = 23.51%), clay lumps (CL = 0.35%), uniaxial compressive strength (UCS = 86.7 MPa), point load test (PLT = 5.18 MPa), ultrasonic pulse velocity (UPV = 5290 m/s) and Schmidt hammer rebound test (SHRT = 49 N) are in accordance with ASTM, ISRM and BSI. Petrographically, the LS is dominantly composed of ooids, peloids, bioclasts and calcite (CaCO3) with trace concentration of the dolomite. Geochemical results (n = 18) indicated that the LS is dominantly made up of calcite (95.81%); while on average it is composed of 52.08 wt.% CaO, 1.13 wt. % SiO2, 0.66 wt. %, MgO, 0.80 wt. % Al2O3, 0.76 wt. % Fe2O3 and LOI were recorded as 42.13 wt. %. Whereas, P2O5, TiO2, MnO, K2O and Na2O are found in trace amount. Regression analysis demonstrates that the empirical correlation equation for estimating uniaxial compressive strength with ultrasonic pulse velocity is more reliable than Schmidt hammer rebound test and point load test. The findings of this study strongly suggest LS of the area has a great potential as a raw material in construction industries.

Analysis of point load test as a method for preliminary geotechnical classification of rocks

1973 ◽  
Vol 7 (1) ◽  
pp. 37-52 ◽  
Author(s):  
Guidicini G. ◽  
C. M. Nieble ◽  
A. T. Cornides
Keyword(s):  
Point Load ◽  
Load Test ◽  
Point Load Test

scholarly journals Point Load Test of Half-Cylinder Core Using the Numerical Model and Laboratory Tests: Size Suggestion and Correlation with Cylinder Core

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Fengyu Ren ◽  
Huan Liu ◽  
Rongxing He ◽  
Guanghui Li ◽  
Yang Liu
Keyword(s):  
Numerical Model ◽  
Laboratory Tests ◽  
Failure Load ◽  
Field Tests ◽  
Point Load ◽  
Diameter Ratio ◽  
Load Test ◽  
Index Test ◽  
Point Load Test ◽  
Calculation Procedures

The point load test (PLT) is intended as an index test for rock strength classification or estimations of other strength parameters because it is economical and simple to conduct in the laboratory and in field tests. In the literature, calculation procedures for cylinder cores, blocks, or irregular lumps can be found, but no study has researched such procedures for half-cylinder cores. This paper presents the numerical model and laboratory tests for half-cylinder and cylinder specimens. The results for half-cylinder and cylinder specimens are then presented, analysed, and discussed. A correlation of failure load between half-cylinder and cylinder specimens is established with a suitable size suggestion and correction factor. It is found that the failure load becomes stable when half-cylinder specimens have a length/diameter ratio higher than 0.9. In addition, the results show that the point load strength index (PLSI) of half-cylinder cores can be calculated using the calculation procedures for diametral testing on cylinder cores, and it is necessary to satisfy the conditions that the length/diameter ratio be higher than 0.9 and the failure load be multiplied by 0.8.

A New, Highly Portable Point Load Test Device for Extreme Field Areas

2007 ◽  
Vol 13 (1) ◽  
pp. 69-73 ◽  
Author(s):  
S. D. BOWMAN ◽  
R. J. WATTERS
Keyword(s):  
Point Load ◽  
Load Test ◽  
Test Device ◽  
Point Load Test

Using the Point Load Test to Analyze the Strength Anisotropy of Quartz Mica Schist Along an Exploration Adit

2015 ◽  
Vol 49 (5) ◽  
pp. 1967-1975 ◽  
Author(s):  
Xiao-Ping Zhang ◽  
Shunchuan Wu ◽  
Lekan Olatayo Afolagboye ◽  
Sijing Wang ◽  
Gengyou Han
Keyword(s):  
Point Load ◽  
Load Test ◽  
Strength Anisotropy ◽  
Mica Schist ◽  
Point Load Test
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