Tehachapi Cement, LLC, a member of Grupo UNACEM, manufactures portland cement for markets in California and the Southwest. Ideal for ready-mix concrete, our type II/V portland cement combines high quality with a commitment to sustainable manufacturing processes.
Growing Together to Build a Sustainable World
Evidence of the limestone industry can be found scattered around the Antelope Canyon. Lime kilns and limestone extraction were common businesses in the late 1800s. The local limestone deposits are also an important ingredient in cement manufacturing. In 1909, the City of Los Angeles established a cement factory to produce materials for the growing LA aqueduct.
As production grew, the company town of Monolith grew to a population of around 350 with a railroad depot, company store, and school. Several generations lived and worked at the plant known as the Monolith Portland Cement Company.
The plant has changed hands several times since the 1980s and was acquired by UNACEM North America in 2023 with the goal of ramping up production of type II/V portland cement and increasing its market share in the Southwestern region.
The cement plants associated with Grupo UNACEM seek to provide quality products that can be used in a wide variety of applications. To fulfill this goal, our cement must be durable with the right chemical makeup to maximize its overall performance. We also understand the importance of producing cement-based products sustainably.
Tehachapi Cement specializes in producing type II/V (LA) portland cement, which meets the standards of ASTM C-150 for types I, II, and V low alkali cements, and ASTM C 1157 for types GU, MS, and HS cement. This cement is suitable for general construction purposes, particularly in environments with moderate to high sulfate content in soil or water. Moreover, the low alkali content in Tehachapi Cement’s type II/V (LA) portland cement minimizes the risk of alkali-silica reactivity (ASR) related damage.
Grupo UNACEM and Tehachapi Cement recognize the pressing need for companies to act according to principles of social responsibility. As a natural resource company dependent on local lime deposits, the Tehachapi facility will balance economic, environmental, and local social concerns in its measurement of success.
We acknowledge our impact on the local environment and community. We know our success as a company is connected to our performance as a neighbor to the landscape and its residents.
