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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 Diserahkan:
8 Januari 2017/Diterima: 4 Jun 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 RUJUKAN
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