Sains Malaysiana 46(11)(2017): 2101-2108

http://dx.doi.org/10.17576/jsm-2017-4611-10

 

 Shear Strength of Cemented Sand Gravel and Rock Materials

(Kekuatan Ricih Pasir Kerikil Bersimen dan Bahan Batu)

 

ZHONGWEI LIU*, JINSHENG JIA, WEI FENG, FENGLING MA & CUIYING ZHENG

 

Division of Materials, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

 

Received: 8 January 2017/Accepted: 4 June 2017

 

ABSTRACT

Shear strength is currently a significant parameter in the design of cemented sand gravel and rock (CSGR) dams. Shear strength tests were carried out to compare material without layers noumenon and layer condition. The experimental results showed good linearity in the curves of shear strength and pure grinding tests with correlation coefficients of nearly 97%. The friction coefficient was similar to that of C¹⁰ roller-compacted concrete (RCC), but the cohesion value was weaker than that of RCC. The shear strength of the CSGR layers decreased by 40% when retarding mixtures were not added and the layer was paved immediately after 4 h of waiting interval.

 

Keywords: Cohesion; CSGR; friction; layer; shear strength

 

ABSTRAK

Kekuatan ricih merupakan parameter penting dalam reka bentuk pasir kerikil bersimen dan batu empangan (CSGR). Ujian kekuatan ricih dilakukan untuk membandingkan bahan tanpa lapisan noumenon dan keadaan berlapis. Keputusan eksperimen menunjukkan garis lurus yang baik dalam lengkungan kekuatan ricih dan ujian pengisaran tulen dengan pekali korelasi menghampiri 97%. Pekali geseran adalah sama dengan penggelek konkrit yang dipadatkan C¹⁰ (RCC), tetapi nilai kejeleketan lebih rendah berbanding RCC. Kekuatan ricih lapisan CSGR menurun sebanyak 40% apabila campuran perencat tidak ditambah dan lapisan itu diturap dengan serta-merta selepas selang masa 4 jam.

 

Kata kunci: CSGR; geseran; kejeleketan; kekuatan ricih; lapisan

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*Corresponding author; email: lzw9958@163.com